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Method for online monitoring vacuum degree of arc extinguishing chamber of vacuum switch of intelligent switch cabinet

A technology of vacuum switch and intelligent switch, which is applied in electric switch, high-voltage/high-current switch, high-voltage air circuit breaker, etc. It can solve the problems of inability to carry out online monitoring and low detection accuracy, achieve high-precision monitoring and realize the realization of monitoring Effect

Inactive Publication Date: 2011-11-23
昇辉智能科技股份有限公司
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Problems solved by technology

However, the system requires blackout measurement and cannot be monitored online
[0007] Some of the above-mentioned devices or methods have low detection accuracy, and some need to modify the interrupter and vacuum switch. Therefore, although there are various methods or devices, there is no monitoring that meets the requirements of reliability, accuracy, and practicality. method

Method used

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  • Method for online monitoring vacuum degree of arc extinguishing chamber of vacuum switch of intelligent switch cabinet
  • Method for online monitoring vacuum degree of arc extinguishing chamber of vacuum switch of intelligent switch cabinet
  • Method for online monitoring vacuum degree of arc extinguishing chamber of vacuum switch of intelligent switch cabinet

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Embodiment Construction

[0021] In this embodiment, a specific monitoring device will be used to further illustrate the method for on-line monitoring the vacuum degree of the vacuum switch interrupter of the intelligent switchgear according to the present invention.

[0022] Such as figure 1 As shown, the monitoring device in this embodiment includes: three excitation coil devices, which are respectively arranged on the outside of the three-phase arc extinguishing chamber, and the A, B, and C three-phase excitation coil devices are fixedly installed on the grounded chassis of the switch cabinet 11, A, B, and C three-phase arc extinguishing chambers are provided with shielding covers 12, and inside the shielding covers 12 are provided a pair of opposite contacts 13 and guide rods 14 respectively connected to the pair of contacts. The measurement and control unit is respectively connected to the three excitation coil devices; the charging capacitor is connected to the measurement and control unit, and t...

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Abstract

The invention discloses a method for online monitoring the vacuum degree of an arc extinguishing chamber of a vacuum switch of an intelligent switch cabinet. The method comprises a shielding case potential method and a magnet-controlled discharge method which are used together, wherein the shielding case potential method is used for continuously monitoring the vacuum degree of the three-phase arc extinguishing chamber of the vacuum switch; and the magnet-controlled discharge method is used for discontinuously monitoring the vacuum degree of the three-phase arc extinguishing chamber in turn. By the technical scheme provided by the invention, the vacuum degree of the arc extinguishing chamber can be online detected reliably, accurately and continuously without performing any reformation on the arc extinguishing chamber of the vacuum switch; and the method is widely applicable.

Description

technical field [0001] The invention relates to a signal monitoring method, in particular to a method for monitoring the vacuum degree of an interrupter of a vacuum switch. Background technique [0002] At present, there are millions of 10kV ~ 35kV vacuum switchgears in China, and accidents of vacuum interrupter damage and explosion occur from time to time during operation. Therefore, a reliable, accurate and practical online monitoring method for vacuum degree of vacuum interrupter is urgently needed. [0003] At present, the online monitoring methods for the vacuum degree of the vacuum switch interrupter at home and abroad mainly include the shielding cover potential method, the micro cold cathode magnetron method, the self-closing force method, the discharge acoustic emission detection method and the partial discharge method. The online monitoring of the vacuum degree in the vacuum interrupter by using the potential change of the shielding cover was first proposed by Japa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/668
Inventor 崔静于龙徐克峰安立勇姜东升孙忠庆
Owner 昇辉智能科技股份有限公司
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