KR100821643B1 - Sensing Device and Remote Status Monitoring System for Shunt Power Capacitor and Control method thereof - Google Patents

Abstract

The present invention relates to a sensing device for a forward capacitor, a remote condition monitoring system, and a control method thereof for remotely monitoring a state of a forward capacitor used for power factor adjustment in a power system.

 A wireless sensor module consisting of a signal sensing sensing unit and a wireless transmitter is attached to an individual upstream capacitor installed in the advanced capacitor bank and wirelessly transmits the sensed signal to the station. The station consists of a wireless receiving module for receiving data transmitted from the wireless sensor module, a communication module for communicating with the outside, a web server and a status monitoring platform.

Therefore, the status monitoring platform analyzes the received signal and provides the result to the remote manager through the web page so that the remote manager can identify and manage the status and location of the advanced capacitor based on the received result. By detecting and replacing the capacitor with the indication of, it is possible to prevent secondary accidents such as damage of peripheral devices due to explosion or soil contamination by insulating oil.

Advanced Capacitors, Capacitor Banks, Detectors, Wireless Sensor Modules, Web Servers, State Sensing Platforms, Ethernet Communications, Communication Stations, Remote Managers

Description

Sensing device, remote status monitoring system and control method for advanced capacitors {Sensing Device and Remote Status Monitoring System for Shunt Power Capacitor and Control method

1 is a perspective view and a partial cross-sectional view showing a sensing device of an advanced capacitor of the present invention,

2 is a schematic diagram showing a remote state monitoring system of an advanced capacitor of the present invention;

3 is a flowchart showing an operating state of the remote state monitoring system of the forward capacitor of the present invention.

Explanation of symbols on the main parts of the drawings

1, 2, 3: wireless sensor module 10: capacitor bank

11: wireless receiving module 12: web server

13: state detection platform 14: dynamic web service provider

15: Ethernet communication module 20: communication station

30: Internet 40: Remote Manager

C1, C2, C3: Forward capacitors S1, S2, S3 ...: Step

21: detection sensor 22: detection rod

23: sensing piece 26: spring

21: case 25: through

The present invention relates to a sensing device for an advanced capacitor, a remote state monitoring system, and a control method thereof.

The forward capacitor is a capacitor used to improve the power factor of a high-voltage water and substation or an individual load, so that the power factor can be improved by allowing a current to flow therethrough, so that the voltage fluctuation rate and power loss can be greatly reduced.

As such, the fastening capacitor used to adjust the power factor in the power system is protected by using fuse, discharge coil and discharge resistance. However, failures are caused by various factors. In severe cases, explosions can damage other devices and pollute the soil.

Therefore, in order to detect an abnormality of such a fastening capacitor, a mechanical sensing device for detecting whether the capacitor is expanded or a protection device for preventing the explosion of the capacitor has been proposed, but it has many problems in practical use.

It is also a sensing circuit that detects the abnormality of the capacitor for electronic phase, an alarm circuit (Patent Application No. 10-1997-69175) that informs the replacement time of the capacitor and the ratio of reactive power and active power to detect the The constant diagnosis device (utility model application 20-2004-10086) of the capacitor using the active power which detects the abnormality, etc. has been proposed.

 However, since such an abnormality detection device of the forward capacitor has to be detected at the place where the power device is installed, the convergence with the IT technology needs to be sought to integrate and control the power system devices installed in various facilities.

The present invention is to solve this problem,

In order to detect the abnormality of the advanced capacitor and to process it in an integrated manner, the present invention intends to realize a capacitor detection device, a remote state monitoring system, and a control method capable of remotely monitoring the capacitor by introducing IT technology.

In particular, it is an object of the present invention to provide a sensing device for an advanced capacitor capable of accurately detecting whether the capacitor is expanded by mounting a mechanical device.

The sensing device of such a forward capacitor has a plurality of through holes formed for heat dissipation in an outer case cylinder, a sensing sensor mounted inside the case cylinder, and fixed to the sensing sensor, and are mounted by a spring, This can be achieved by having a sensing rod with a sensing piece installed on the side.

Another purpose is to attach sensors to detect various information in advance to detect the abnormality individually in the advance capacitor, and transmit the collected information to the station by using the wireless transmitter periodically to access the remote site The aim is to provide a remote condition monitoring system for the lead capacitor which can provide the collected information to the supervisor.

Such a remote condition monitoring system for an advanced capacitor is a system in which a remote manager communicates with and controls various device devices through the Internet.

A capacitor bank comprising a plurality of forward capacitors installed in a power system device, a detector connected to detect an abnormality of the forward capacitor, a wireless sensor module connected to wirelessly transmit a detection signal of the detector; ; A wireless receiving module receiving the output of the wireless sensor module of the capacitor bank, a web server connected through communication with the wireless receiving module, and providing a service on whether an abnormal capacitor is abnormal; Communication station (20) consisting of a dynamic web service providing unit configured to configure a web page as a result of being received from the state sensing platform, the state sensing platform is connected to the web server using a web browser, the remote sensing manager and; It is characterized in that it comprises an Ethernet module for communicating with the remote server to communicate with the web server.

Another purpose is to connect to a web server using a remote manager and a web browser, an execution routine that receives a radio signal of abnormality by selecting a corresponding capacitor after connecting to the web server, and detected by the execution routine. It aims to provide a control method of a phase-capacitor remote condition monitoring system consisting of a manager action routine that informs and takes action on a signal to a remote manager through a platform.

The remote state monitoring system having the above-mentioned features includes a forward capacitor bank equipped with a sensor and a wireless transmission unit, a web server that provides a state monitoring platform based on data received from a wireless transmission module, and communication to the outside. It has a communication station in which a communication module is installed.

 In addition, the communication station is connected to the Internet, and the web server built in the station is implemented to provide a status monitoring platform to a remote manager connected from a remote site, and the remote manager manages the history management of the diagnostic capacitors based on the received status monitoring result. It is easy to manage by maintaining the risk and displaying the location of the capacitors when the problem occurs, and can be provided when there is a request for the history of the capacitors from the user later.

Hereinafter, described in detail with reference to the accompanying drawings.

1 is a perspective view and a partial cross-sectional view showing a sensing device of the fastening capacitor of the present invention, the sensing case cylinder 24 is inserted outside the fixed fastening capacitor (C1), (C2), (C3) If the corresponding forward capacitor (C1), (C2), (C3) is expanded when an abnormality occurs, it is a device that detects the expansion.

Although the case cylinder 24 has the shape of a rectangular shape like the shape of a capacitor, in the case of a circular capacitor, it can take a circular structure.

The sensing device has a plurality of through-holes 25 for heat dissipation are formed in the outer casing 24, the sensing sensor 21 is inserted into the casing 24, the sensing sensor 21 In the spring 26, the sensing rod 22 mounted on the spring is fixed, and the sensing piece 23 is formed at the front end of the sensing rod 22.

Although the sensing piece 23 has the shape of an arc, you may have a rectangular structure here.

In this case, the sensor 21 may be replaced by a pressure sensor or a limit switch.

In this way, a plurality of sensing rods for sensing are disposed at 90-degree intervals in the inner casing 24 to sense that swelling capacitors C1, C2, and C3 swell when an abnormality occurs.

That is, when the phase advance capacitors (C1), (C2), (C3) is abnormal and expands, the sensing piece 23 is pushed, and the sensing piece (23) is mounted on the spring sensing rod (22). It applies pressure to the sensor 21 to detect the abnormality of the capacitors C1, C2, C3, and connects a separate circuit such as flip-flop to the sensor. To keep it going.

Such a mechanical sensing device constitutes the sensing units 11, 12, and 13 to be described later. However, in addition to the mechanical sensing device, the forward capacitors C1 and C2 may be formed by the flow of current. As a sensing circuit for detecting an abnormality of (C3), each of the uplink capacitors (C1), (C2), and (C3) in the capacitor bank is detected using a conventionally proposed electronic sensing circuit or a mechanical device. It is possible to detect, and the part consisting of such a sensing device or a sensing circuit corresponds to the sensing unit 11, 12, 13 in FIG.

In particular, the sensing device as described above forms the sensing piece 23 formed on the sensing rod 22 to have a half arc shape curved surface, and the upper and lower left and right sides of the forward capacitors C1, C2, and C3. Since it is installed in, it is easy to detect any part of any part of the surface of the capacitor that expands.

 Figure 2 is a schematic diagram showing a remote state monitoring system of an advanced capacitor of the present invention, which is composed of an advanced capacitor, a wireless sensor module (sensor and wireless transmitter), a station (web server and status monitoring platform), a remote monitor.

That is, the capacitor bank 10 is provided with a plurality of forward capacitors C1, C2, and C3 for connecting a power line supply circuit, and the forward capacitors C1, C2, and C3. ), The abnormality of the forward capacitors (C1), (C2), (C3) to the wireless sensor module (1), (2), (3) through the sensing unit (11), (12), (13), respectively. Whether the detection signal is configured to be applied.

The forward capacitors (C1), (C2) and (C3) used here are capacitors installed to adjust the power factor for power.

In addition, the output values of the wireless sensor modules (1), (2), and (3) of the capacitor bank (10) are configured to be applied to the wireless receiving module (11) of the communication station (20).

The communication station 20 communicates with the wireless receiving module 11 and the wireless receiving module 11 for receiving an abnormal signal of the advance capacitors C1, C2, and C3 through the wireless sensor module. A web server 12 connected to be performed and providing a web service for status monitoring to a remote manager, a status sensing platform 13 built in the web server and provided to the remote manager, and the web server 12 ), Which is composed of a dynamic web service providing unit 20 constituting a dynamic web page.

In addition, the communication station 20 is provided with an Ethernet communication module 15 for mutual communication with the remote manager 40 via the Internet 30.

The Ethernet communication module 15 is a communication means necessary for detecting an abnormality of the advance capacitor at a remote location, and the communication station 20 is connected to the Internet through this.

The web server 12 is built in a measurement system and provides a web service capable of detecting abnormal conditions of the desired capacitors C1, C2, and C3 to the original letter manager 40 to be remotely connected. Implemented to provide.

In particular, the web server 12 dynamically receives the command from the remote manager 40 and dynamically detects the abnormality of the corresponding capacitors C1, C2, and C3. It is produced by using dynamic web service technique that can be provided to.

The state sensing platform 13 is built on a web server, and the remote manager 40 is a kind of operating system that is provided when the remote manager 40 accesses the web server using a web browser. The capacitors (C1), (C2) and (C3) in the phase can be selected individually or as a group, and the result of the check for abnormality can be checked.

3 is a flowchart showing an operating state of the remote state monitoring system of the forward capacitor of the present invention.

This flowchart largely selects a connection routine for accessing a web server using the remote manager 40 and a web browser, and selects the corresponding capacitors C1, C2, and C3 after connecting to the web server 12. Thus, it can be divided into an execution routine that receives a radio signal of an abnormal state and an administrator action routine that informs a remote administrator through the platform and takes an action.

The access routine for accessing the web server is composed of a web server access step (S1), and the execution routine is a platform providing step (S2) for providing a status monitoring platform (13) through the web server, and the desired facts through the platform. Phase selection and execution steps (S3) for selecting the capacitors (C1), (C2) and (C3), and the status of the phase capacitors (C1), (C2) and (C3) selected through the wireless receiving module. A state signal transmission step S4 for receiving a signal is performed.

In addition, the manager action routine includes a platform transfer step (S5) for transmitting the status signals of the fast forward capacitors (C1), (C2) and (C3) to the platform, and an administrator transfer step for informing the administrator of an abnormal state transmitted to the platform. (S6) and the abnormal action step (S7) in which the manager knows whether there is an error and takes action.

In the present invention configured as described above, the remote manager checks whether or not the abnormal capacitors of the capacitor banks 10 are repeatedly located at several places over a predetermined time.

At this time, the capacitor bank 10 in which the forward capacitors C1, C2, and C3 are installed is connected to the sensing units 11, 12, and 13 so that the forward capacitors C1, C C2), (C3) is applied to the wireless sensor module (1), (2), (3) the status signal detected by each detection unit when an error occurs.

And when an abnormal condition occurs, the wireless sensor module (1), (2), (3) is applied to the wireless receiving module 11 of the communication station (20).

The output of the wireless reception module 11 can be used as it is to detect whether or not the abnormality of the capacitor in the installed at a short distance, but the present invention aims at the integrated management.

Therefore, as shown in FIG. 2, the remote manager 20 connects to the communication station 20 through the Internet 30 to monitor the capacitor bank 10 by performing the web server connection step S1.

At this time, the communication station 20 is connected to the Internet 30 through the Ethernet communication module 15 so that the computer to which the data is to be sent first checks whether the communication network is in use or not, and then sends the data when it is empty. It is connected to the web server 12 inside the communication station through.

The platform providing step S2 is then executed so that the web server provides the state manager platform 13 to the remote administrator.

This status sensing platform is a kind of operating system that is provided when the remote manager 40 accesses a web server using a web browser. The remote manager can use the capacitor bank's forward capacitors (C1), (C2), ( C3) can be selected (step S3).

In this way, when selecting the forward capacitor (C1), (C2), (C3) in the state detection platform 13 and press the execute button, the next state signal transmission step (S4) proceeds to the wireless receiving module 11 It receives the status signal periodically generated from the wireless sensor module attached to the forward capacitor (C1), (C2), (C3).

Next, the transmission step S5 is executed to the platform to transmit the state signal applied to the wireless reception module 11 to the state detection platform 13, and the next manager transmission step S6 is performed. Here, as the status signal transmitted to the status monitoring platform, it is determined whether the phase advance capacitors (C1), (C2), and (C3) are abnormal, and the result is transmitted to the remote manager using the dynamic web service provider 14. do.

Next, the remote manager will take necessary measures to lend to the abnormality of the corresponding phase capacitors (C1), (C2), and (C3) and perform maintenance such as replacement beforehand.

 As described above, the present invention detects an abnormality of the capacitors (C1), (C2), and (C3) and sends the status signal wirelessly, and the remote manager connects to the web server through the Internet and proceeds through the platform. It is possible to detect the condition of the capacitors (C1), (C2) and (C3) and take action against them. It can be managed by the effect.

As described above, the present invention can be integratedly managed by using the remote state monitoring system of the advanced capacitor which is used to adjust the power factor in the power system, and the following effects can be expected.

(1) status monitoring of individual phase capacitors in the phase capacitor banks remotely via the Internet is possible;

(2) The manager shall take precautions to prevent the occurrence of an accident by utilizing information such as the status of individual phase capacitors in the inaccessible phase capacitor bank and the location of the capacitors that may have problems. Can and

(3) In addition, it is possible not only to protect the surrounding power equipments that may be damaged in the aftermath of secondary accidents caused by capacitor accidents, and to prevent soil contamination due to insulating oil.

 (4) The manager can expect the invention effect of managing the forward capacitor efficiently by managing the status history of the individual forward capacitor.

Claims (4)

A plurality of through holes 25 formed for heat dissipation to the outer case barrel 24, A detection sensor 21 mounted inside the case cylinder 24, The detection device of the fastening capacitor, characterized in that the detection rod 22 is fixed to the detection sensor 21, is installed by a spring, and having a detection piece 23 at the front end is installed. The method of claim 1, Sensing device for fastening capacitors, characterized in that the sensing piece 23 formed on the sensing rod 22 has a curved surface having a half arc shape In a system in which a remote manager communicates and controls various devices over the Internet, A capacitor bank comprising a plurality of forward capacitors installed in a power system device, a detector connected to detect an abnormality of the forward capacitor, a wireless sensor module connected to wirelessly transmit a detection signal of the detector; ; A wireless receiving module receiving the output of the wireless sensor module of the capacitor bank, a web server connected through communication with the wireless receiving module, and providing a service on whether an abnormal capacitor is abnormal; A communication station comprising a status sensing platform where a remote manager is connected to a web server using a web browser, and a dynamic web service providing unit which is built in the web server and configures a web page as a result of the status sensing platform; Remote status monitoring system of the advanced capacitor, characterized in that it comprises an Ethernet module for communicating with the remote site to communicate with the web server A web server connection step (S1) for a remote administrator to access a web server of the communication station 20 using a web browser; A platform providing step (S2) of providing a status sensing platform to a remote administrator through a web server after performing the access step; A phase capacitor selection and execution step (S3) of connecting to a web server using a web browser and selecting a desired phase capacitor in the platform providing step; After performing the step (S4) of receiving the sensed signal of the selected uplink capacitor wirelessly and transmits the status signal to the status detection platform (S5), the status signal to the remote manager Control method of the advanced capacitor remote state monitoring system, characterized in that for performing the abnormal action by transmitting

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