JPH1132449A - Decentralized supervisory and controlling system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a decentralized supervisory and controlling system the control mode which can be switched smoothly and which synchronizes the time of the time data of a control system to that of the time data of a standby system and can make cyclic transmission compatible with a network. SOLUTION: A control mode that indicates which of a high-rank centralized supervisory and controlling device 3 and a supervisory and controlling console device 4 has control is set. At the same time, a down signal transmission format is transmitted to a remote supervisory and controlling master station equipment 2 (2a, 2b,..., 2n) via a network 5 by adding the control mode to the format. Upon receiving the format, the equipment 2 discriminates whether or not the received control is matched with a set control mode. When they are not matched with each other, the equipment 2 locks the control to a slave station to be controlled and, at the same time, transmits an abnormal control switching status to the devices 3 and 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distributed supervisory control system for monitoring and controlling a controlled station (slave station) by connecting remote supervisory control master stations by a network.

[0002]

2. Description of the Related Art Generally, monitoring and control in substation facilities and the like are performed using a remote monitoring and control device.
A remote monitoring control master station device is provided at a control station, and a slave station is provided at a controlled station to perform monitoring control. Then, a plurality of remote monitoring control master stations are connected by a network, and a higher-level central monitoring controller that monitors and controls the entire controlled device and a monitoring console that has a backup function are connected to the network by a network. It monitors and controls. In this case, various data are transmitted and received between the remote monitoring control master station device and the controlled station (slave station) by cyclic transmission.

[0003] Here, as for a distributed control system on the side of a controlled station (slave station) in a substation facility or the like, for example, as shown in JP-A-5-328455, an effective control system using test mode setting means is used. Means of implementing the system test function are described. These systems have recently been developed as distributed control systems for so-called local LANs using optical LANs as substation local networks.

On the other hand, a distributed control system corresponding to the private LAN is applied to a control station (master station) in a substation or the like, and a remote monitoring control master station device, a higher-level centralized monitoring control device, and a monitoring function as a backup function. Effective with respect to the control right recognition and time synchronization method taking into account each of the two systems with the control console device and the consistency with the special function (reversal test) in cyclic transmission with the controlled station (slave station). No distributed supervisory control system has been developed to provide the realization.

[0005]

When a distributed monitoring and control system is applied to a control station (master station) in a power substation, the entire controlled equipment is first monitored and controlled in order to make the system redundant. Control of the centralized supervisory control device and the supervisory control console device with its backup function to the remote supervisory control master device connected via the network The issue is how to effectively recognize them.

[0006] Next, in order to provide redundancy in the centralized supervisory control device or the supervisory control console device, when the duplex system of the control system and the standby system is adopted and distributed via a network, the remote supervisory control is similarly performed. For the master station device,
The problem is how to effectively recognize the two systems of the control system and the standby system.

Further, in a distributed monitoring and control system, a higher-level centralized monitoring and control device or a monitoring and control console device inputs time data via a master clock device and transmits the time data to a remote monitoring and control master station device connected via a network. When performing time synchronization, it is a problem how to effectively recognize a plurality of time data coming from the two systems of the control system and the standby system.

Finally, in a reversal test in cyclic transmission between the remote monitoring control master station device and the controlled station (slave station), how the distributed monitoring and control system is made compatible with networks having different transmission protocols. The challenge is how to achieve it effectively.

It is an object of the present invention to smoothly switch the control right mode, enable time synchronization of the time data of the control system and the standby system, and achieve consistency between the cyclic transmission and the network. The goal is to obtain a distributed monitoring and control system.

[0010]

According to a first aspect of the present invention, there is provided a decentralized monitoring and control system which transmits information necessary for monitoring and controlling power system equipment between a control station and a controlled station by controlling the controlled system. A remote supervisory control master station for monitoring and controlling the controlled equipment at a place, a higher centralized supervisory control device for monitoring and controlling the entire controlled equipment using information obtained through the remote supervisory control master station, A distributed monitoring and control system in which a monitoring and control console device having a backup function of a monitoring and control device is distributed and connected via a network that performs a transmission protocol processing in accordance with a predetermined transmission procedure, comprising: The console device sets the control right mode indicating which one has the control right, adds the control right mode to the downlink signal transmission format to the remote monitoring control device master station, and transmits the signal. The supervisory control master station device determines whether or not the control right mode assigned to the received data matches the set control right mode, and if not, locks the control to the controlled place and switches the control right. The abnormal status is transmitted to the centralized supervisory control device and the supervisory control console device.

In the distributed monitoring and control system according to the first aspect of the present invention, a control right mode indicating which of the higher centralized monitoring and control device and the monitoring and control console device has the control right is set, and the remote monitoring and control device master station is set. A control right mode is assigned to the downstream signal transmission format to the remote monitoring control apparatus master station via the network. The remote monitoring control master station apparatus that has received the downlink signal transmission format determines whether the control right mode assigned to the received data matches the set control right mode. If they do not match, the control of the controlled place is locked and the control right switching abnormal status is transmitted to the upper centralized monitoring and control device and the monitoring control console device.

According to a second aspect of the present invention, there is provided a distributed supervisory control system according to the first aspect, wherein the remote supervisory control master station device has a control right mode assigned to the received data. When the control right mode does not match the control right mode, it is determined whether or not the control right mode matches within a delay of a preset fixed time. Alternatively, only the control information from one of the monitoring and control console devices is validated, and control to the controlled place is executed.If the control right modes do not match within a delay within a certain time, control to the controlled place is performed. And the control right switching abnormal status is transmitted to the centralized supervisory control device and the supervisory control console device.

[0013] In the decentralized supervisory control system according to the second aspect of the present invention, in addition to the operation of the first aspect, the remote supervisory control master station is provided with the downlink signal transmission format when it receives it. It is determined whether or not the set control right mode matches the set control right mode. If not, it is determined whether or not the control right mode matches within a predetermined delay time. If the control right modes match within a certain time delay, only the control information from either the higher-level centralized monitoring control device or the monitoring control console device according to the control right mode is validated, and control to the controlled station is performed. Execute On the other hand, if the control right modes do not match within a delay within a certain time, the control of the controlled place is locked and the control right switching abnormal status is transmitted to the upper centralized monitoring control device and the monitoring control console device.

A distributed monitoring and control system according to a third aspect of the present invention is the distributed monitoring and control system according to the first or second aspect, wherein the remote supervisory control master station device comprises a higher-level centralized supervisory control device and a supervisory control device. When the control right mode from one of the console devices is valid and the control right mode from the other is undefined, only the control information from the device in the valid control right mode is valid and control to the controlled station is executed. When both control right modes are undefined, the control information is discarded.

[0015] In the distributed monitoring and control system according to the third aspect of the present invention, in addition to the operation of the first or second aspect, the remote monitoring and control master station apparatus can receive a downlink signal transmission format when receiving the downlink signal transmission format. It is determined whether the control right mode assigned thereto is indefinite or not, and if one of the control right modes of the upper centralized supervisory control device and the monitoring control console device is valid and the control right mode from the other is indefinite, Only the control information from the device in the valid control right mode is validated and the control of the controlled place is executed. If both control right modes are undefined, the control information is discarded.

A distributed monitoring and control system according to a fourth aspect of the present invention is the distributed monitoring and control system according to the third aspect, wherein at least one of the upper centralized monitoring and control device and the monitoring and control console device has a control system and a standby system. And a control system and a standby system are separately arranged via a network, and the upper centralized monitoring and control device and the monitoring and control console device enter the control right mode when they are standby systems. The standby system is set, and a control right mode is added to the downlink signal transmission format to the remote monitoring control device master station for transmission. The remote monitoring control master device transmits the control right mode assigned to the received data. It is determined whether or not the control right mode is set in advance as the standby system, and when the control right mode is matched, the system is recognized as the standby system.

In a distributed monitoring and control system according to a fourth aspect of the present invention, in addition to the operation of the third aspect of the present invention, a higher-level centralized monitoring and control device or a monitoring and control console device having a control system and a standby system is provided with a When is a standby system, the control right mode is set to the standby system, and the control right mode is added to the downlink signal transmission format to the remote monitoring control device master station, and the transmission is performed. The remote supervisory control master station device that has received the downlink signal transmission format determines whether or not the control right mode matches the control right mode set in advance as the standby system, and if they match, recognizes it as the standby system.

A distributed monitoring and control system according to a fifth aspect of the present invention is the distributed monitoring and control system according to the fourth aspect, further comprising a master clock device for managing the time of the entire distributed monitoring and control system; The control device or the monitoring control console device sets the time data via the master clock device, adds the time data to the downlink signal transmission format together with the control right mode, and transmits the downlink data transmission format. Only the time data and the time data recognized as the control system in the control right mode in the data are input as time synchronization data.

In the distributed monitoring and control system according to a fifth aspect of the present invention, in addition to the operation of the fourth aspect of the present invention, in the upper centralized monitoring and control device or the monitoring and control console device, the time data is transmitted via the master clock device. The time data is set in addition to the control right mode, the time data is added to the downlink signal transmission format, and transmitted to the remote monitoring control master station device. In the remote monitoring control master station device that has received the sorting signal transmission format, only the time data in the received data and the time data recognized as the control system in the control right mode are input as time synchronization data.

A distributed monitoring and control system according to a sixth aspect of the present invention is the distributed monitoring and control system according to the first aspect of the present invention, wherein the control station indicates the inverted display information according to the cyclic transmission procedure. In order to transmit two or more cyclic transmission words as one display word on the network in response to receiving the inverted display information status bit for each click transmission word, two or more words included in one display word on the network are transmitted. Inversion test transient status bit that is turned on when any of the display information status bits of the cyclic transmission word is received, and inversion of two or more cyclic transmission words included in one display word on the network. Inversion test transition status that turns on when all the display information status bits are received The remote monitoring control master station device adds a status bit during the transition of the inversion test and a status bit during the determination test to the upstream signal transmission format, and performs centralized monitoring via the network. When the status bit during the reversal test in the data received from the remote supervisory control master station device is ON, the upper central supervisory control device and the supervisory control console device transmit to the control device and the supervisory control console device. The display word retains the previous value state, and when the status bit during the inversion test is on, the data of the display word on the network is recognized as valid inverted display information.

According to a sixth aspect of the present invention, there is provided a decentralized monitoring and control system according to the first aspect of the present invention. When the inverted display information status bit for each transmission word is transmitted, the remote supervisory control master station device transmits the inverted display information status bits of two or more cyclic transmission words included in one display word on the network. The inversion test status bit is turned on when any one of the following is received, and the inversion test is performed when all the inversion display information status bits of two or more cyclic transmission words included in one display word on the network are received. Turns on the medium status bit. Then, the status bit during the inversion test and the status bit during the determination test are added in the upstream signal transmission format, and transmitted to the upper centralized supervisory control device and the supervisory control console device via the network. The upper-level centralized supervisory control device and the supervisory control console device hold the previous value state for the display word on the network when the status bit during the inversion test in the data received from the remote supervisory control master station device is on, If the status bit during the inversion test is on, the data of the display word on the network is recognized as valid inverted display information.

According to a seventh aspect of the present invention, there is provided a distributed monitoring and control system according to the sixth aspect, wherein the remote monitoring and control master station has a status bit during transition of the inversion test during the inversion test. When a state change occurs in the controlled station in the state of the above, when the inverted display information status bit is received in the next cycle, the status bit during the inversion test transition is turned off, and the upper centralized supervisory control device and the supervisory control console device If the status bit during the inversion test is off, the display word data on the network is recognized as valid status change data display information, and if the status bit during the inversion test is off, the status bit during the When on, display words on the network retain their previous values as inverted display information A.

In a distributed monitoring and control system according to a seventh aspect of the present invention, in addition to the function of the sixth aspect of the present invention, a state change occurs in the controlled station while the status bit during the inversion test during the inversion test is on. Occurs, the remote supervisory control master station turns off the inversion test transient status bit when the inversion display information status bit is received in the next cycle. When the status bit during the transition of the reversal test is OFF, the data of the display word on the network is recognized as valid state change data display information. If the status bit during the inversion test is off and the status bit during the inversion test is on, the display word on the network holds the previous value state as the inverted display information.

[0024]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a distributed monitoring and control system according to a first embodiment of the present invention.

In FIG. 1, controlled stations (slave stations) 1a to 1
n is connected to the remote supervisory control master stations 2a to 2n via cyclic transmission. The remote supervisory control master station devices 1a to 1n, the centralized supervisory control device 3 and the supervisory control console device 4 are connected by a network 5.

That is, the remote monitoring control master station devices 2a-2
n is installed at the control station, and information necessary for monitoring and controlling the power system equipment is transmitted to and from the controlled stations 1a to 1n by cyclic transmission to monitor the controlled equipment of the controlled stations 1a to 1n. Control. The higher-level centralized monitoring and control device 3 monitors and controls the entire controlled device by using information transmitted from the remote monitoring and control master station devices 2a to 2n via the network 5, and the monitoring and control console device 4 includes: It has a backup function for the host centralized monitoring and control device 3. As described above, the remote supervisory control master stations 2a to 2n, the upper centralized supervisory controller 3 and the supervisory console 4 are distributed and connected via the network 5 which performs transmission protocol processing according to a certain transmission procedure. .

FIG. 2 is an explanatory diagram of a transmission format transmitted to the network of the distributed monitoring and control system according to the first embodiment. FIG. 2A is an explanatory diagram of a downlink signal transmission format, and FIG. 2B is an explanatory diagram of an uplink signal transmission format.

In FIG. 2A, the downlink signal transmission format 6 is data transmitted from the centralized supervisory control device 3 or the supervisory control console device 4 to the remote supervisory control master station devices 2a to 2n. It comprises a control right mode signal section 6a and a control signal section 6b. The outline of each signal section is as follows. (1) Control right mode signal unit 6a In the case of binary information, for example, in the case of binary information, the following values are obtained in conjunction with the control right mode setting from the centralized supervisory control device 3 or the monitoring control console device 4. (A) In the case of 10 (binary system): upper centralized monitoring and control device 3
Has control over (B) In the case of 01 (binary system): the monitoring control console device 4 has control authority.

Based on the signal content of the control right mode signal section 6a, the remote supervisory control master station devices 2a to 2n match or disagree with the control right modes transmitted from the upper centralized supervisory control device 3 and the supervisory control console device 4. Check the validity of (2) Control signal section 6b This is a control signal for giving a control command to the equipment to be controlled, such as an on / off command for a circuit breaker or disconnector.

Next, as shown in FIG. 3 (b), the upstream signal transmission format 7 transmitted from the remote supervisory control master station devices 2a to 2n to the upper centralized supervisory control device 3 or the supervisory control console device 4 is large. It comprises a status signal section 7a and an upstream information section 7b separately. The outline of each signal section is as follows. (1) Status signal unit 7a When the remote supervisory control master stations 2a to 2n detect inconsistencies in the control privilege modes transmitted from the upper centralized supervisory control device 3 and the supervisory control console device 4, the control privilege switching abnormal status Is a status display signal representing (2) Uplink information section 7b This is an uplink information signal transmitted from the controlled stations (slave stations) 1a to 1b via cyclic transmission and necessary for monitoring and controlling power system equipment.

In FIG. 2A and FIG. 2B, P is a preamble, SD is a start delimiter, FC is a frame control, DA is a destination address, SA is a source address, FCS is a frame check sequence, ED is an end delimiter.

Next, the operation of the distributed monitoring and control system according to the first embodiment will be described. When the downlink signal transmission format 6 is transmitted from the centralized supervisory control device 3 and the supervisory control console device 4 to the network 15, the remote supervisory control master stations 2a and 2b receive the downlink signal transmission format 6. Upon receiving the downlink signal transmission format 6, the remote monitoring control master station devices 2a to 2n execute a control right mode switching confirmation process shown in FIG.

In FIG. 3, the remote monitoring control master station device 2a
2n first recognize in step S1 that the data received from each device is correctly received in the downlink signal transmission format 6. Next, in step S2, the control right mode signal section 6a of the downlink signal transmission format 6
Is determined, and it is determined in step S3 whether the control right modes from the respective devices match.

Here, if a mismatch is detected, step S
In step 4, a timer is started in order to perform a predetermined time delay that can be set in advance. If the match of the control right mode is not detected within the timer up, at step S5,
Even when the control information is received, the control according to the control signal portion 6b of the downlink signal transmission format 6 is locked, and at the same time, the control right switching abnormal status is used as error information using the status signal portion 7a of the uplink signal transmission format 7. The notification is sent to the host centralized monitoring and control device 3 and the monitoring and control console device 4.

On the other hand, if the control right mode coincidence is detected in step S3, the control signal section 6b from the device according to the control right mode is enabled in step S6, and the control to the controlled place is controlled. Will be executed. Accordingly, if the presettable timer value set in step S4 is set in consideration of the shift (delay) time in recognition of the control right mode due to the difference in the processing of the network transmission and each device, smooth control can be achieved. Recognition of the right switch becomes possible,
The recognition of an erroneous control right switching abnormality immediately after the control right switching is eliminated.

Next, the control right mode from the centralized supervisory control device 3 and the supervisory control console device 4 is "10" or "0".
Although the control right mode is "1", the control right mode may be "00" or "11" other than this, and may be undefined. In such a case, if the control right mode from one of the higher-level centralized monitoring control device 3 and the monitoring control console device 4 is valid and the control right mode from the other is undefined, the device in the valid control right mode Only the control information from the control unit is made effective, and control to the controlled place is executed. If both control right modes are undefined, the control information is discarded.

That is, the following binary information indicating an undefined control right mode is added to the control right mode signal portion 6a in the downlink signal transmission format 6. (A) In the case of 00 (binary system): undefined control right mode (b) In the case of 11 (binary system): undefined control right mode FIG. 4 shows control in the remote monitoring control master station device in this case. It is a flowchart which shows the content of right mode indefinite confirmation processing.
When recognizing the control right mode in step S2 in FIG. 3, the recognition is performed in consideration of the undefined condition of the control right mode.

That is, in step S7, it is determined whether or not the control right modes from the centralized supervisory control device 3 and the monitoring control console device 4 are both indeterminate. If both control right modes are indefinite, Discards the data even if the subsequent control information is received in step S8.

On the other hand, if both control right modes are not indefinite, it is determined in step S9 whether one of the control right modes is indefinite, and one of the control right modes is indefinite. In this case, the control right mode determined not to be uncertain in step S10 is validated. And FIG.
Is performed according to step S6 shown in FIG. Also,
The processing to step S3 in FIG. 3 is performed when neither step S7 nor step S9 is performed.

Thus, when the control right mode set for the purpose of switching the control right is, for example, a hardware contact c (binary state input of a and b contacts), at least one of the contacts is caused by a hardware failure. Input status is "00"
Alternatively, it is possible to provide the correct recognition of the control right data even when the data of "11" is transmitted.

Next, a second embodiment of the present invention will be described. FIG. 5 is a configuration diagram of a distributed monitoring multi-monitoring control system according to the second embodiment of the present invention. The second embodiment is different from the first embodiment shown in FIG. 1 in that a centralized supervisory control device 3 and a supervisory control console device 4 are distributed and arranged in a control system and a standby system, respectively. is there. That is, the upper centralized supervisory control device 3a of the control system, the upper centralized supervisory control device 3b of the standby system, the supervisory control console device 4a of the control system, and the supervisory control console device 4b of the standby system are connected to the network 5.

As described above, the centralized supervisory control device 3 and the supervisory control console device 4 have a duplex system configuration of a duplex system, and the control system and the standby system are distributed and arranged via the network 5, respectively. When the monitoring control console device 3 and the monitoring control console device 4 themselves are in the standby system, they set the control right mode to the standby system. In addition, the remote monitoring control device master station 2
The control signal mode, which is a standby system, is assigned to the downstream signal transmission format to a to 2n and transmitted. The remote monitoring control master station devices 2a to 2n determine whether the assigned control right mode matches a control right mode set in advance as a standby system, and when they match, recognize the device as a standby system. . In this case, in the downlink signal transmission format 6 shown in FIG. 2A, the binary information indicating the standby system in the control right mode signal section 6a is represented by “00 (binary system)”.

Thus, for example, even if the upper-level centralized monitoring and control device 3 and the monitoring and control console device 4 are configured in the two-system state of the control system and the standby system, the standby system state is previously set to, for example, “0”.
0 ”, the remote monitoring control master station device 2
Also in step S7 and step S9 shown in FIG.
, It is possible to perform the control right mode process. Therefore, the number of devices is increased (the centralized supervisory control device 3a of the control system,
b, Control system monitoring / control console device 4a, Standby system monitoring / control console device 4b) Even if it is performed, recognition of smooth control right switching taking into account the control system and the standby system without adding complicated judgment processing. Can be provided.

Next, a third embodiment of the present invention will be described. FIG. 6 is a configuration diagram of a distributed monitoring and control system according to the third embodiment of the present invention. This third embodiment is different from the second embodiment shown in FIG. 5 in that a master clock device 8 for managing the time of the entire distributed monitoring and control system is provided, and The centralized supervisory control device of the standby system (or the supervisory control console device of the control system and the supervisory control device of the standby system) sets the time data through the master clock device 8 and also sets the time data together with the control right mode. The remote supervisory control master station device 2 is configured to input only the time data in the received data and the time data recognized as the control system with respect to the control right mode as time-synchronous data. Things.

In this case, the downlink signal transmission format 6
Is configured as shown in FIG. In addition to the control right mode signal portion 6a and the control signal portion 6b of the downlink signal transmission format 6 shown in FIG. 2, a time data signal portion 6c to which time data from the master time device 8 is added is provided.

In FIG. 6, a downstream signal transmission with time data synchronized with the master clock device 8 transmitted from the upper centralized supervisory control device 3a of the control system and the upper centralized supervisory control device 3b of the standby system via the network 5 Format 6
Are received by the remote monitoring control master stations 2a to 2n, the remote monitoring control master stations 2a to 2n first execute the time synchronization process shown in FIG.

That is, in step S11, it is recognized that the data received from the upper centralized monitoring and control devices 3a and 3b of the control system and the standby system is correctly received in the downlink signal transmission format 6. Next, in step S12, the control right mode signal part 6a of the downlink signal transmission format 6 is recognized, and in step S13, it is determined whether it is a control system or a standby system. If it is determined that the system is a control system, time synchronization using the time data signal section 6c of the transmission format 6 is performed in step S14. If it is determined in step S13 that the system is the standby system, time synchronization using the time data signal unit 6c is not performed in step S15. Thereby, the remote monitoring control master station device 2
In this case, unnecessary time synchronization processing is not performed.

Each of the higher-level centralized monitoring and control devices 3a and 3b inputs time data from the master clock device 8. However, differences in the asynchronousness of each device and the load state of processing, or on the network 5 Due to the difference in transmission time, the time data does not always reach the remote monitoring control master station device 2 at the same time. In such a case, if time synchronization is performed using data of both systems (control system, standby system),
There is a possibility that a time reversal or the like occurs on the device side where the time is adjusted. Even in such a case, if the third embodiment is used, the time is adjusted using only the time data from the predetermined control system, so that the time reversal phenomenon does not occur and is effective. A time adjustment can be provided.

In the above description, the centralized supervisory control device 3
Although the control system and the standby system described above have been described, the control system and the standby system of the monitoring and control console device 4 as a backup may be similarly performed.

Next, the transmission protocol between the remote monitoring control master station device 2 and the controlled station (slave station) 1 is different from that of the network 5 in the transmission protocol. Therefore, in order to achieve the consistency, the configuration is made as follows.

First, as shown in FIG. 9, the upstream signal transmission format 7 includes a status signal section 7a and an upstream information section 7b.
The upstream information section 7b further has a plurality of display words 9 defined on the network 5. Here, a case is shown in which there are four display words 9a to 9d.

Each of the display words 9a to 9d on the network 5 has the cyclic display information 10a and the cyclic display information 10b from the controlled place (slave station) 1. . Here, a case where the cyclic transmission word is composed of two words of the cyclic display information 10a and the cyclic display information 10b is shown. That is, there are two pieces of cyclic display information for one word on the network 5. Furthermore, a status bit 11 during transition of the inversion test and a status bit 12 during transition of the inversion test that are turned on under a predetermined condition are added to each of the display words 9 on the network 5.

FIG. 10 is an operation flowchart in the case of matching the cyclic transmission with the network. In FIG. 10, the cyclic transmission word A between the controlled place (slave station) 1 and the remote monitoring control device is 1W to 1W.
Each word up to 4W is transmitted cyclically.
Then, when the inverted display information status bit B in the inversion test is output at the time point t1, the data is inverted, the cyclic transmission is in the inverted state, and the data is in the inverted display state C.

Here, it is assumed that the display word 9a on the network 5 in the upstream signal transmission format 7 has 2W as the cyclic display information 10a and 4W as the cyclic display information 10b. Similarly, it is assumed that the display word 9b on the network 5 has 3W as the cyclic display information 10a and 5W as the cyclic display information 10b.

In the display word 9a, the data is inverted when the cyclic transmission data 2W or the cyclic transmission data 24W is transmitted to the network 5 with the inverted display information status bit B set to ON. On the other hand, the status bit 11 during the inversion test is set by an OR condition when the cyclic transmission data 2W or the cyclic transmission data 4W is transmitted to the network 5 (inverted). Further, the inversion test in progress status bit 12 is set in accordance with the AMD condition when the cyclic transmission data 2W and the cyclic transmission data 4W are transmitted to the network 5 (inverted).

Now, at time 2, the cyclic transmission data 4
When W is transmitted, the data 4W is inverted at time t2, and the status bit 11 during the inversion test transition is set. As described above, the status bit 11 during the inversion test is set according to the OR condition when the cyclic transmission data 2W or 4W is inverted (when transmitted to the network 5).

Next, when the cyclic transmission data 2W is transmitted at time t4, the cyclic transmission data 4W is inverted, so that the inversion test status bit 12 is set to ON. As a result, the fact that the reversal test is being performed is transmitted to the upper centralized supervisory control device 3.

Similarly, in the network display word 2, the status bit 11 during the inversion test and the status bit 12 during the inversion test are set to ON at times t3 and t5, respectively. This makes it possible to provide a system that is compatible with the network 5 and the cyclic transmission.

Next, the operation when a state change (state change) occurs in the controlled place 1 during the inversion test will be described. Now, if a state change occurs at the timing of the time tx during the reversal test, at the time tx, the controlled station (slave station)
The state changes from the state indicating that the inverted display information status bit B for each word in the cyclic transmission from 1 to the inverted state to the reset state. As a result, at the time point t4, the inversion test status bit 12 set under the AND condition of the inversion of the cyclic transmission words 2W and 4W is not set to ON if the inversion test is originally performed, but is set by the OR condition. The on-setting of the status bit 11 during the inversion test transition is reset. At time t5, it is the same as at time t4.

As a result, even when a state change occurs during the inversion test, a system can be provided which ensures the consistency with the network 5 by using the status bit 11 during the inversion test and the status bit 12 during the inversion test. .

[0061]

As described above, according to the present invention, in the centralized supervisory control device and the supervisory control console device, the control right mode is set and transmitted to the remote supervisory control master device via the network. The remote supervisory control master station recognizes the coincidence of the control right modes, and if they do not match, transmits the control right switching abnormal status to the upper centralized supervisory control device and the supervisory control console device, and locks the subsequent control. . Therefore, it is possible to perform smooth switching in consideration of the transition of the control right switching, switching in consideration of the indefinite control right mode, and effective recognition of the control system and the standby system.

Also, in the centralized supervisory control device or monitoring control console device, the time synchronization data via the master clock device is set together with the control right mode for recognizing the control system and the standby system, and the data is transmitted via the network. To the remote monitoring control master station, and only the time data recognized as the control system is input to the remote monitoring control master station as time synchronization data. Therefore, in a plurality of time data coming from the control system or the standby system, time synchronization can be smoothly performed without frequently switching times.

Further, in the remote monitoring control master station device, in order to measure consistency with the inversion test in the cyclic transmission with the controlled station (slave station), the status bit during the inversion test transition is provided for each display word of the network. And the status bit during the reversal test by a predetermined OR condition or AN
It is set on / off according to the D condition and transmitted to the centralized supervisory control device and the supervisory control console device via the network, recognizes each status bit, and according to the on / off setting conditions of both status bits, each display word of the network is Process reverse display information. Therefore, even if two or more words of the cyclic transmission are transmitted as one word on the network, the inversion test can be performed smoothly, and the state change processing can be performed without any problem even if a state change occurs during the inversion test. It becomes possible.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a distributed monitoring and control device according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a transmission format transmitted to a network of the distributed monitoring and control system according to the first embodiment of the present invention.

FIG. 3 is a flowchart illustrating the content of a control right mode switching confirmation process in the remote monitoring control master station device according to the first embodiment of the present invention.

FIG. 4 is a flowchart showing the content of a control right mode indefinite confirmation process in the remote monitoring control master station device according to the first embodiment of the present invention.

FIG. 5 is a configuration diagram of a distributed monitoring and control system according to a second embodiment of the present invention.

FIG. 6 is a configuration diagram of a distributed monitoring and control system according to a third embodiment of the present invention.

FIG. 7 is an explanatory diagram of a downlink signal transmission format transmitted to a network of a distributed monitoring and control system according to a third embodiment of the present invention.

FIG. 8 is a flowchart showing the content of time synchronization processing in the remote monitoring control master station device according to the third embodiment of the present invention.

FIG. 9 is an explanatory diagram of an uplink signal transmission format in a case where the transmission protocol between the remote monitoring control master station device and the controlled station and the transmission protocol with the network are matched in the inversion test.

FIG. 10 is an operation time chart in the case of matching the cyclic transmission with the network in the reversal test.

FIG. 11 is an operation time chart in a case where matching between cyclic transmission and a network when a state change occurs during an inversion test.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Controlled place 2 Remote monitoring control master station device 3 Upper central monitoring and control device 4 Monitoring and control console device 5 Network 6 Downlink signal transmission format 7 Uplink signal transmission format 8 Master clock device 9 Display word 10 Cyclic display information 11 Inversion test transient Medium status bit 12 Status bit during inversion test

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI H04L 29/14 H04L 11/00 310D H04Q 9/00 311 13/00 307A 311

Claims (7)

[Claims] A remote monitoring control master station device for transmitting and receiving information necessary for monitoring and controlling power system equipment between a control station and a controlled station to monitor and control a controlled device of the controlled station; A centralized supervisory control device that monitors and controls the entire controlled device using information obtained through the remote supervisory control master station device, and a supervisory control console device having a backup function of the centralized supervisory control device. In a distributed monitoring and control system, which is distributed and connected via a network that performs transmission protocol processing according to a certain transmission procedure, the upper centralized monitoring and control device and the monitoring and control console device perform control indicating which one has control authority. Set the right mode and transmit the downlink signal transmission format to the remote monitoring control device master station with the control right mode added thereto. It is determined whether or not the control right mode assigned to the data coincides with the set control right mode. If the control right mode does not match, the control to the controlled place is locked, and the control right switching abnormal status is concentrated on the upper level. A distributed monitoring and control system, wherein the data is transmitted to a monitoring and control device and the monitoring and control console device. 2. The distributed supervisory control system according to claim 1, wherein the remote supervisory control master station device determines whether the control right mode assigned to the received data does not match the set control right mode. It is determined whether or not the control right modes match within a predetermined delay of a predetermined time, and if they match, from either the upper centralized monitoring control device or the monitoring control console device according to the control right mode. Only the control information is validated and the control to the controlled place is executed. If the control right modes do not match within a delay within a predetermined time, the control to the controlled place is locked and the control right is controlled. A distributed monitoring and control system, wherein a switching abnormality status is transmitted to the centralized supervisory control device and the monitoring and control console device. 3. The distributed supervisory control system according to claim 1, wherein said remote supervisory control master station device has a control right from one of an upper centralized supervisory control device and a supervisory control console device. When the mode is valid and the control right mode from the other is undefined, only the control information from the device in the valid control right mode is made valid and the control to the controlled place is executed. When both control right modes are undefined Is a decentralized monitoring and control system wherein the control information is discarded. 4. The distributed monitoring and control system according to claim 3, wherein at least one of the upper centralized monitoring and control device and the monitoring and control console device has a so-called duplex system of a control system and a standby system. The control system and the standby system are respectively distributed via a network, and the higher-level centralized monitoring control device and the monitoring control console device set the control right mode to be the standby system when they are the standby system. At the same time, the control right mode is added to the downstream signal transmission format to the remote monitoring control device master station and transmitted, and the remote monitoring control master station device is configured such that the control right mode assigned to the received data is set as a standby system in advance. 4. The control system according to claim 3, wherein it is determined whether or not the control mode matches the set control right mode.
2. The distributed monitoring and control system according to 1. 5. The distributed monitoring and control system according to claim 4, further comprising a master clock device that manages the time of the entire distributed monitoring and control system, wherein the upper centralized monitoring and control device or the monitoring and control console device includes: The time data is set via the master clock device and the time data is added to the downlink signal transmission format together with the control right mode and transmitted, and the remote monitoring control master station device includes the A distributed monitoring and control system, wherein only time data and time data recognized as a control system in the control right mode are input as time synchronous data. 6. The inverted display information status bit for each cyclic transmission word indicating that the information is inverted display information according to a cyclic transmission procedure from the controlled station in the distributed monitoring and control system according to claim 1. For transmitting two or more of the cyclic transmission words as one display word on the network, the reception of two or more of the cyclic transmission words included in one display word on the network. An inversion test transient status bit that is turned on when any of the inverted display information status bits is received, and an inverted display information status bit of two or more of the cyclic transmission words included in one display word on the network. And a status bit during inversion test, which is turned on when all The remote supervisory control master station device has a status bit during transition of the inversion test and a status bit during the determination test in the upstream signal transmission format, and has a centralized supervisory control device via a network. And to the monitoring console device, the upper centralized monitoring controller and monitoring console device,
If the status bit during the inversion test transition in the data received from the remote monitoring control master station device is ON, hold the previous value state for the display word on the network,
A distributed monitoring and control system, wherein when the status bit during the inversion test is on, data of a display word on the network is recognized as valid inversion display information. 7. The distributed monitoring and control system according to claim 6, wherein the remote monitoring control master station device is in a state where the status bit during transition of the inversion test during the inversion test is on and in the controlled station. When a change occurs,
When the inverted display information status bit is received in the next cycle, the status bit during the inversion test transition is turned off, and the upper centralized supervisory control device and the supervisory control console device determine that the status bit during the inversion test transition is off. Recognizes the data of the display word on the network as valid state change data display information, and when the status bit during the inversion test is off and the status bit during the inversion test is on, the Wherein the display word of (1) holds a previous value state as inverted display information.