WO2017202159A1

WO2017202159A1 - Wide-area stable communication apparatus and method having intelligent identification function

Info

Publication number: WO2017202159A1
Application number: PCT/CN2017/080971
Authority: WO
Inventors: 郭云飞; 郭经红; 梁云; 卜宪德; 李炳林; 王瑶; 田文锋
Original assignee: 全球能源互联网研究院; 国家电网公司; 南京南瑞集团公司; 国网江苏省电力公司
Priority date: 2016-05-25
Filing date: 2017-04-18
Publication date: 2017-11-30
Also published as: CN105871466B; CN105871466A

Abstract

Provided are a wide-area stable communication apparatus and method having an intelligent identification function. By deploying a private communication apparatus at a power system plant station end, unified access of wide-area stability control terminal devices such as a wide-area measurement unit (PMU) and a stability control apparatus is realized, and real-time and reliable communication with a stability control centre station is realized by means of an optical fibre private network. In addition, the private communication apparatus can realize real-time automatic discovery and identification functions for an on-line state or an off-line sate of a wide-area stability control terminal device, and identified information is transmitted to a wide-area stability control centre station in real time.

Description

Wide area stability communication device and method with intelligent identification function

Cross-reference to related applications

The present application is based on a Chinese patent application filed on Jan. 25, 2016, the filing date of

Technical field

The present invention relates to the field of power system communication technologies, and in particular, to a wide area security communication device and method having an intelligent identification function.

Background technique

With the construction of cross-regional interconnected power grids and the future development of global energy Internet, more long-distance, wide-ranging security control services will be generated. In addition, more wide-area measurement and application of new control devices and systems will enable long-distance applications. More and more data and information are transmitted, wide-area communication traffic is large, and synchronization requirements are high. The service puts forward high-reliability and high-real-time transmission requirements for power communication.

At present, the communication network of the data acquisition and stability control system of the WAMS system adopts different communication networks respectively. The PMU data acquisition of the WAMS system is mainly transmitted through the scheduling data, and the WAMS central station and the dispatching system monitor the running state of the power line in real time. However, the scheduling data network has not solved the problem of long data delay and congestion. The stability control system also collects the PMU data through the point-to-point fiber-optic line to judge the load status of the line, and passes the main station according to the load status of different lines. The system issues an offline strategy to control commands such as cutting or load shedding. This point-to-point control has a limited range and is difficult to adapt to the real-time and reliability requirements of the wide-area control of the wide-area stability control system. Moreover, the state in which the communication network of the WAMS system and the stability control system are separated is difficult to realize data sharing, and the PMU data is repeatedly collected, and the application efficiency is low.

At present, the control system of the central site identifies the terminal equipment in the plant in the access network. It can be realized by manual configuration. If the access point of the stable control terminal equipment changes in the plant station, the system configuration is changed manually when the equipment goes online or goes offline, the program is complicated; in addition, once the control system cannot receive the terminal equipment When collecting data, it is difficult to determine whether it is a device failure or a communication line failure. It is necessary to manually find the cause of the failure, and it is difficult to realize automatic detection and timely processing of the failure. Therefore, how to realize the automatic identification of the terminal device and the real-time monitoring of the online state is a problem to be solved.

Summary of the invention

In order to overcome the deficiencies of the prior art, the embodiments of the present invention provide a wide area security communication device and method with intelligent identification function, which deploys a dedicated communication device at the station end of the power system, and is widely controlled for a wide area. The terminal device allocates an end-to-end dedicated channel to realize the sharing of the communication network between the WAMS system and the stability control system; the dedicated communication device realizes the access of the wide area security control center station to the terminal equipment in the plant station through the bypass data collection and intelligent identification functions. Status for remote real-time monitoring.

The solution used to achieve the above objectives is:

A wide-area stability signal communication device with intelligent identification function, the communication device includes: an intelligent identification unit configured to number the data collection interface, and receive data through the numbered data acquisition interface;

The bypass data unit is configured to perform bypass shunting and data filtering on the data collected by the data collecting interface to obtain an original message of the data frame corresponding to the data after the splitting and filtering;

The smart identification unit is configured to determine, according to an original message of the data frame, an access terminal device type corresponding to the data collection interface that receives the data frame, and status information of the access terminal device, where The status information indicates that the access terminal device is in an online or offline state.

Preferably, the smart identification unit is configured to be according to at least one access terminal device, The data frame format and the data content corresponding to each access terminal device determine the access terminal device type of the data collection interface corresponding to the data frame. The access terminal device may be a wide area stable control terminal device.

Preferably, the smart identification unit is configured to determine whether a data frame is received in a data collection interface corresponding to the access terminal device within a preset duration, and if received, determining that the access terminal device is online Or the fault elimination state; otherwise, determining that the access terminal device is in an offline state or a fault state.

Preferably, the wide-area stability signal communication device further includes: an uplink optical interface processing unit, a multiplexing/demultiplexing unit, an Ethernet interface processing unit, and a 2M optical interface processing unit respectively connected to the main control unit; ,

The smart identification unit, the Ethernet interface processing unit, and the 2M optical interface processing unit are all connected to a bypass data unit.

Preferably, the main control unit is configured to perform coordinated control and synchronization processing on each functional module of the communication device.

Preferably, the uplink optical interface processing unit is configured to upload data encapsulated into an SDH frame structure to an SDH device in the station through a standard STM-1 interface provided by the SDH; wherein the SDH device is configured to pass 2.5G or The 10G optical interface is connected to the optical fiber private network.

Preferably, the smart identification unit is configured to determine, according to the interface number, the data encapsulation structure information, the source of the data information and the change of the data collected by the corresponding number port, and transmit the intelligently recognized information to the main control unit.

A wide-area stability signal communication method with intelligent identification function, the communication method includes:

(1) numbering the data collection interfaces of the communication device, and receiving data through the numbered data collection interface;

(2) The bypass data unit performs bypass shunting and data filtering on the data collected by the data collecting interface, and obtains the original data frame corresponding to the data after the shunting and filtering. interest;

(3) The smart identification unit determines, according to the original message of the data frame, an access terminal device type corresponding to the data collection interface that receives the data frame, and status information of the access terminal device; The status information indicates that the access terminal device is in an online or offline state.

Preferably, the determining the type of the access terminal device corresponding to the data collection interface that receives the data frame includes:

Determining, according to the data frame format and the data content corresponding to each access terminal device, the type of the access terminal device of the data collection interface corresponding to the data frame. The access terminal device may be a wide area stable control terminal device.

Preferably, determining the status information of the access terminal device corresponding to the data collection interface that receives the data frame includes: determining whether the data is received by the data collection interface corresponding to the access terminal device within a preset duration The frame, if received, determines that the access terminal device is in an online or fault-cancellation state; otherwise, determines that the access terminal device is in an offline state or a fault state.

Preferably, the access terminal device is a wide area stable control terminal device; the method further includes: setting a reporting frequency for the wide area stable control terminal device.

Compared with the prior art, the embodiment of the invention has the following beneficial effects:

1) Wide-area information collection and stability control can be uniformly connected and uplinked to the fiber-optic communication private network through the dedicated communication device in the plant station, which improves the real-time and reliability of wide-area data acquisition and control, and effectively solves the PMU data through scheduling. Data delay and congestion problems exist in data network transmission.

2) The communication method effectively solves the problem of distributing the communication network of the WAMS system and the stability control system by deploying a dedicated communication device at the station end of the power system and distributing the end-to-end dedicated fiber channel for the wide-area stability control terminal device. The separation of the WAMS system and the stability control system communication network improves the utilization efficiency of the communication network, and at the same time, the PMU can collect data and avoid Repeated collection of PMU data to improve data utilization efficiency.

3) The communication method proposed by the embodiment of the present invention can allocate an independent physical communication channel for the terminal data acquisition and control device of each factory station, realize end-to-end communication control function, and realize the remote control of the central station directly to the equipment in the plant station. Configuration and management.

4) The intelligent identification function of the dedicated communication device proposed by the embodiment of the present invention can perform real-time monitoring on the access status of the terminal device, and the early detection and remote maintenance function of the device failure, thereby effectively preventing the stable control terminal device from going online or offline. The line is manually changed by the way the system is configured.

5) The intelligent identification function of the dedicated communication device proposed by the embodiment of the present invention can automatically determine whether the device is faulty or the communication line is faulty when the control system cannot receive the collected data of the terminal device, and assists in automatic fault detection and timely processing. , greatly improve the efficiency of troubleshooting and resolution of stable control terminal equipment.

DRAWINGS

1 is a schematic flowchart 1 of a wide-area stability signal communication method with an intelligent identification function according to an embodiment of the present invention;

2 is a schematic overall structural diagram of communication in a wide area stability control communication station based on a dedicated communication device according to an embodiment of the present invention;

3 is a partial structural diagram of intra-station communication in a wide area stability control communication station based on a dedicated communication device according to an embodiment of the present invention;

4 is a structural diagram of a wide area security signal communication device with an intelligent identification function according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart 2 of a wide-area stability signal communication method with an intelligent identification function according to an embodiment of the present invention.

detailed description

The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

A wide-area stability signal communication device with intelligent identification function, the communication device comprises: an uplink optical interface processing unit respectively connected to the main control unit, a multiplexing/demultiplexing unit, an intelligent identification unit, and an Ethernet interface a processing unit and a 2M optical interface processing unit; bypass data units respectively connected to the smart identification unit, the Ethernet interface processing unit, and the 2M optical interface processing unit.

The main control unit is used for coordinated control and synchronization processing of each functional module of the communication device.

The uplink optical interface processing unit is configured to upload the data encapsulated into the SDH frame structure to the SDH device in the station through the standard STM-1 interface provided by the SDH, and upload the data to the control center via the transmission network formed by the SDH device; The SDH device receives the control information from the control center and parses the real-time control of the stable terminal device through the corresponding output port.

The smart identification unit determines the source of the data information and the change of the data collected by the corresponding number port according to the interface number and the data encapsulation structure information, and transmits the intelligently recognized information to the main control unit.

The SDH device accesses the optical fiber private network through a 2.5G or 10G optical interface.

A wide-area stability signal communication method with intelligent identification function, as shown in FIG. 1, the communication method includes:

(2) The bypass data unit performs bypass shunting and data filtering on the data collected by the data collecting interface to obtain an original message of the data frame corresponding to the data after the shunting and filtering;

Among them, it needs to be further explained that bypass shunting is performed for various input data streams. The acquisition is provided to the intelligent identification unit for detection, thereby determining what type of data is provided, and providing the judgment result to the main control unit, and correspondingly labeling the data frame when multiplexing, so that the receiving end can identify and analyze the data type. .

The bypass shunt processing method may include: monitoring data streams input from different Ethernet interfaces and 2M data interfaces, real-time collecting data streams transmitted to the main control unit, and transmitting the collected data packets to the intelligent identification unit. Perform identification processing.

In addition, because the data stream is very large, the bypass processing identifies the data packet and does not care about the specific transmitted data content. For data filtering, the specific data content is filtered out, and only the data such as the frame header and the data length are extracted. The original information of the frame, while the original received data is complete information containing the complete frame structure, frame length and data frame content.

In the step (3), the type of the access terminal device corresponding to the data collection interface that receives the data frame may be: according to at least one type of access terminal device, each type of access terminal device The corresponding data frame format and data content determine the access terminal device type of the data collection interface corresponding to the data frame. The access terminal device may be a wide area stable control terminal device.

Determining whether the status information of the access terminal device corresponding to the data collection interface of the data frame is received, and determining whether the data frame is received by the data collection interface corresponding to the access terminal device in the preset duration. If yes, determining that the access terminal device is in an online or fault cancellation state; otherwise, determining that the access terminal device is in an offline state or a fault state.

Specifically, the reporting frequency of the access terminal device may be set to enable access The terminal device transmits a data frame based on the reporting frequency.

For example, the data reporting frequency of the wide area stability control terminal device is 25 to 100 times/second; if the bypass data unit does not receive the collected data reporting information for 3 consecutive seconds, it is determined that the wide area security control terminal device is offline or faulty. ;

If the data reporting is resumed within 3 seconds after the interruption of the bypass data unit, it is determined that the wide-area stability control terminal device is online or the fault is eliminated.

The multiplexing/demultiplexing unit, the multiplexing means that the collected Ethernet data and the E1 interface data are encapsulated into a standard STM-1 frame structure according to the SDH frame structure requirement, and the SDH network is accessed through the uplink interface; The demultiplexing refers to parsing the SDH frame structure data received from the uplink interface, and transmitting the data to the Ethernet interface or the E1 interface unit corresponding to the corresponding number according to the analysis result.

The bypass data unit is configured to perform data mirroring and data filtering processing on data collected from the Ethernet interface processing unit and the 2M optical interface processing unit, and extract information such as an interface number and a data encapsulation structure required by the intelligent identification unit to transmit the smart identification. Unit processing.

As shown in FIG. 2, in this embodiment, a communication structure diagram of a terminal device in a plant station through a dedicated communication device and a fiber optic private network access center station, the system includes a wide area stability control center station, and a power communication fiber station. Network, wide-area security and special communication devices in the station, as well as various types of stable terminal access devices such as PMU and security devices.

The optical fiber private network utilizes the channel multiplexing characteristic of the SDH technology in the optical fiber private network, and allocates a terminal from the central station to the terminal through the constrained shortest path algorithm for each wide-area stability control terminal device that accesses the dedicated communication device. To the end 2M dedicated physical channel.

The dedicated physical channel realizes the end-to-end communication control function of the central station to the station end stability control terminal device, and can directly configure and manage the equipment in the plant station directly through the central station.

As shown in FIG. 3, FIG. 3 is a structural diagram of communication in a wide area stability control communication station based on a dedicated communication device according to the embodiment, where the system includes an SDH device in the station and a wide-area security special communication device. And various types of stable terminal access devices such as PMU and security devices.

The SDH device realizes the connection with the uplink port of the wide-area security dedicated communication device through the STM-1 interface, and accesses the optical fiber private network through the 2.5G or 10G optical interface, thereby realizing the communication function with the central station.

As shown in FIG. 4, FIG. 4 is a structural diagram of a wide-area stability signal communication device with an intelligent identification function according to the embodiment, where the system includes a main control unit, a bypass data unit, an intelligent identification unit, and multiplexing/demultiplexing. Unit, Ethernet interface processing unit, 2M optical interface processing unit and uplink optical interface processing unit.

Specifically,

The intelligent identification unit is configured to number the data collection interface, and receives data through the numbered data collection interface;

The smart identification unit is configured to determine an access terminal of the data collection interface corresponding to the data frame according to a data frame format and data content corresponding to each access terminal device of the at least one access terminal device Equipment type. The access terminal device may be a wide area stable control terminal device.

The smart identification unit is configured to determine whether the data frame is received by the data collection interface corresponding to the access terminal device within a preset duration, and if received, determining that the access terminal device is online or fault-removed State; otherwise, determining that the access terminal device is away Line status or fault status.

The wide area stability signal communication device further includes: an uplink optical interface processing unit, a multiplexing/demultiplexing unit, an Ethernet interface processing unit, and a 2M optical interface processing unit respectively connected to the main control unit;

The main control unit is configured to perform coordinated control and synchronization processing on each functional module of the communication device.

The uplink optical interface processing unit is configured to upload the data encapsulated into the SDH frame structure to the SDH device in the station through the standard STM-1 interface provided by the SDH; wherein the SDH device is configured to pass the 2.5G or 10G optical interface. Access to the fiber optic private network.

The smart identification unit is configured to determine, according to the interface number, the data encapsulation structure information, the source of the data information and the change of the data collected by the corresponding number port, and transmit the intelligently recognized information to the main control unit.

The intelligent identification unit completes the real-time discovery and identification function of the terminal device access or offline through the bypass data collection and the data frame depth resolution function, and transmits the intelligent identification information to the remote control center in real time through a dedicated communication control channel. As shown in FIG. 5, the method specifically includes the following steps:

1) First, the data collection interface of the dedicated communication device is numbered, the data is received through the numbered data collection interface, and the data source is identified by the number.

2) bypassing the data and performing data filtering to obtain the original message of the data frame received by the data collection interface, and according to different data frame formats and data transmitted by the wide-area stable terminal device such as the PMU and the stability control device. The content can determine the type of the access terminal device corresponding to the data collection interface, and its online or offline status.

3) The data reporting frequency of the wide-area stability control terminal equipment such as PMU and stability control device is 25 to 100 times. / Second, consider the terminal information control command, file transfer and other transient information transmission time. If the bypass data unit does not receive the collected data report information within 3 seconds, it can be regarded as the terminal device is offline or faulty.

4) The intelligent identification unit maintains uninterrupted real-time monitoring. If the data is reported again within 3 seconds after the bypass data is interrupted, it can be regarded as the terminal device going online or troubleshooting.

5) The dedicated communication device detects the online or offline status and device category information of the wide-area stable terminal device such as the PMU and the stability control device detected by the intelligent identification unit, and reserves the dedicated control channel between the communication device and the central station to report to the central station in real time. Control system.

Finally, it should be noted that the above embodiments are only used to explain the technical solutions of the present application and not to limit the scope of the protection thereof. Although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that: A person skilled in the art can still make various changes, modifications or equivalent substitutions to the specific embodiments of the application after reading this application, but these changes, modifications or equivalents are within the scope of the claims to be approved.

Claims

A wide area stability signal communication device with intelligent identification function, the communication device comprising:

The intelligent identification unit is configured to number the data collection interface, and receives data through the numbered data collection interface;

The bypass data unit is configured to perform bypass shunting and data filtering on the data collected by the data collecting interface to obtain an original message of the data frame corresponding to the data after the splitting and filtering;

The smart identification unit is configured to determine, according to an original message of the data frame, an access terminal device type corresponding to the data collection interface that receives the data frame, and status information of the access terminal device, where The status information indicates that the access terminal device is in an online or offline state.
The wide area security signal communication device according to claim 1, wherein the smart identification unit is configured to: according to at least one type of access terminal device, a data frame format and data content corresponding to each access terminal device And determining an access terminal device type of the data collection interface corresponding to the data frame. The access terminal device may be a wide area stable control terminal device.
The wide area stability signal communication device according to claim 1, wherein the smart identification unit is configured to determine whether a data frame is received in a data collection interface corresponding to the access terminal device within a preset time period, if Receiving, determining that the access terminal device is in an online or fault-cancellation state; otherwise, determining that the access terminal device is in an offline state or a fault state.
The wide-area stability signal communication device according to any one of claims 1 to 3, wherein the wide-area stability signal communication device further comprises: an uplink optical interface processing unit respectively connected to the main control unit, and multiplexing/ a demultiplexing unit, an Ethernet interface processing unit, and a 2M optical interface processing unit; wherein

The smart identification unit, the Ethernet interface processing unit, and the 2M optical interface processing list The unit is connected to the bypass data unit.
The wide area stabilization signal communication device according to claim 4, wherein

The main control unit is configured to perform coordinated control and synchronization processing on each functional module of the communication device.
The wide area stabilization signal communication device of claim 4, wherein

The uplink optical interface processing unit is configured to upload the data encapsulated into the SDH frame structure to the SDH device in the station through the standard STM-1 interface provided by the SDH; wherein the SDH device is configured to pass the 2.5G or 10G optical interface. Access to the fiber optic private network.
The wide area stabilization signal communication device according to claim 4, wherein

The smart identification unit is configured to determine, according to the interface number, the data encapsulation structure information, the source of the data information and the change of the data collected by the corresponding number port, and transmit the intelligently recognized information to the main control unit.
A wide-area stability signal communication method with intelligent identification function, the communication method includes:

(1) numbering the data collection interfaces of the communication device, and receiving data through the numbered data collection interface;

(2) The bypass data unit performs bypass shunting and data filtering on the data collected by the data collecting interface to obtain an original message of the data frame corresponding to the data after the shunting and filtering;

(3) The smart identification unit determines, according to the original message of the data frame, an access terminal device type corresponding to the data collection interface that receives the data frame, and status information of the access terminal device; The status information indicates that the access terminal device is in an online or offline state.
The communication method of claim 8, wherein the determining the type of the access terminal device corresponding to the data collection interface that receives the data frame comprises:

Determining, according to the data frame format and the data content corresponding to each access terminal device, the type of the access terminal device of the data collection interface corresponding to the data frame. The access terminal device may be a wide area stable control terminal device.
The communication method of claim 9, wherein determining the status information of the access terminal device corresponding to the data collection interface of the data frame comprises: determining whether the access terminal device passes the preset time period A data frame is received in the corresponding data collection interface. If received, the access terminal device is determined to be in an online or fault-cancellation state; otherwise, the access terminal device is determined to be in an offline state or a fault state.
The communication method according to claim 10, wherein the access terminal device is a wide area stable control terminal device; and the method further comprises: setting a reporting frequency for the wide area stable control terminal device.