On-line monitoring method and system for high-voltage circuit breaker status

A high-voltage circuit breaker, state technology, applied in the field of electric power, can solve the problems of large investment, long time, large quantity and so on

Active Publication Date: 2015-11-18
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 for high-voltage circuit breaker status
  • On-line monitoring method and system for high-voltage circuit breaker status
  • On-line monitoring method and system for high-voltage circuit breaker status

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] See figure 1 Shown 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 for 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 the SCADA system (data acquisition and monitoring system), and obtain the operating state data of the high-voltage circuit breaker from the EMS system or the SCADA system;

[0026] The EMS system can be accessed through SOAP (SimpleObjectAccessProtocol, 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: Find out each SOE (SequenceOfEvent, sequence of events) event in the closing process or opening proces...

Embodiment 2

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

[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 2 As shown, the online monitoring method for 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 the SCADA system (data acquisition and monitoring system), and obtain the operating state data of the high-voltage circuit breaker from the EMS system or the SCADA system;

[0041] Step S202: Find out the switch spring non-charged action event, the first switch intermediate state event, the switch closing event, and the switch spring non-charged reset event from the operating state data according to the preset keywords, and record the The trigger time of the switch spring uncharged acti...

Embodiment 3

[0048] In this embodiment, the process type is the disconnect process as an example for description.

[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 for 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 the SCADA system (data acquisition and monitoring system), and obtain the operating state data of the high-voltage circuit breaker from the EMS system or the SCADA system;

[0051] Step S302: Find out the switch control loop disconnection event, the second switch intermediate state event, the switch disconnection event, the switch control loop disconnection reset event from the operating state data according to the preset keywords, and record all The trigger time of the switch contr...

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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, and 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 plays the dual role 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 quantity and large investment in power station equipment. Once it is damaged due to a fault, it will be difficult and long to repair, 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 the circuit breakers, reduce equipment failure rates, and impro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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