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On-line monitoring method and system of state of high-voltage circuit breaker

A high-voltage circuit breaker and monitoring system technology, applied in the field of electric power, can solve problems such as large quantity, economic loss, and large investment

Active Publication Date: 2015-01-28
FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it has a large number and a large investment in power station equipment. Once it is damaged due to a fault, it will be difficult to repair and take a long time, which will cause serious economic losses.

Method used

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  • On-line monitoring method and system of state of high-voltage circuit breaker
  • On-line monitoring method and system of state of high-voltage circuit breaker
  • On-line monitoring method and system of state of high-voltage circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] see figure 1 As shown, it is a schematic flow chart of Embodiment 1 of the online monitoring method for the state of a high-voltage circuit breaker of the present invention. Such as figure 1 As shown, the online monitoring method of the state of the high-voltage circuit breaker in this embodiment includes the following steps:

[0025] Step S101: access the EMS system (energy management system) or SCADA system (data acquisition and monitoring system), and obtain the operating status data of the high-voltage circuit breaker from the EMS system or the SCADA system;

[0026] The EMS system can be accessed through the SOAP (Simple Object Access Protocol) protocol to complete the real-time acquisition of the operating status data of the high-voltage circuit breaker, and can further convert the data type of the acquired operating status data;

[0027] Step S102: Search out the SOE (Sequence Of Event) events in the closing process or opening process of the high-voltage circui...

Embodiment 2

[0038] In this embodiment, the process type is a closed process as an example for illustration.

[0039] see figure 2 As shown, it is a schematic flowchart of Embodiment 2 of the online monitoring method for the state of a high-voltage circuit breaker of the present invention. Such as figure 2As shown, the online monitoring method of the state of the high-voltage circuit breaker in this embodiment includes the following steps:

[0040] Step S201: access the EMS system (energy management system) or SCADA system (data acquisition and monitoring system), and obtain the operating status data of the high-voltage circuit breaker from the EMS system or the SCADA system;

[0041] Step S202: According to the preset keywords, respectively find out the switch spring uncharged action event, the first switch intermediate state event, the switch closing event, and the switch spring uncharged reset event from the operating state data, and record the The triggering time of the switch spr...

Embodiment 3

[0048] In this embodiment, the process type is a disconnection process as an example for illustration.

[0049] see image 3 As shown, it is a schematic flowchart of Embodiment 3 of the online monitoring method for the state of a high-voltage circuit breaker of the present invention. Such as image 3 As shown, the online monitoring method of the state of the high-voltage circuit breaker in this embodiment includes the following steps:

[0050] Step S301: access the EMS system (energy management system) or SCADA system (data acquisition and monitoring system), and obtain the operating status data of the high-voltage circuit breaker from the EMS system or the SCADA system;

[0051] Step S302: According to the preset keywords, find out the switch control loop disconnection action event, the second switch intermediate state event, the switch disconnection event, and the switch control loop disconnection reset event respectively from the operating state data, and record all The ...

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Abstract

The invention provides an on-line monitoring method and system of the state of a high-voltage circuit breaker. The method comprises the steps of accessing an EMS or an SCADA system, and acquiring operating state data of the high-voltage circuit breaker from the EMS or the SCADA system; searching the operating state data for all SOE events of the switching-on process or the switching-off process of the high-voltage circuit breaker according to preset keywords, and recording the triggering time of each SOE event; determining multiple time intervals corresponding to the process type of the high-voltage circuit breaker according to the triggering time, wherein the process type comprises the switching-on process or the switching-off process; comparing each time interval with corresponding probability distribution, obtaining an abnormal time interval beyond the corresponding normal probability region, and determining the fault type of the high-voltage circuit breaker according to the abnormal time interval. In this way, on-line monitoring of the state of the high-voltage circuit breaker can be achieved.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to an online monitoring method and system for the state of a high-voltage circuit breaker. Background technique [0002] As an important device in the power system, the high-voltage circuit breaker is responsible for the dual functions of control and protection in the operation of the power grid. The reliability of its operation is related to the safe and stable operation of the power system. At the same time, it has a large number and a large investment in power station equipment. Once it is damaged due to a fault, it will be difficult to repair and take a long time, which will cause serious economic losses. Monitoring the operating parameters of high-voltage circuit breakers helps to grasp its operating characteristics and changing trends, discover potential equipment failures in advance, comprehensively monitor various status indicators of circuit breakers, reduce equipme...

Claims

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Application Information

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IPC IPC(8): G01R31/327
Inventor 孔华东欧繁李恒真谢志杨杨凯董镝张乾良谢志文欧晓妹
Owner FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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