Online monitoring device for arrester mixed current recording

A monitoring device and lightning arrester technology, which is applied in the field of lightning arresters, can solve the problems of small frequency response range, low detection accuracy, and failure of lightning arrester monitoring, and achieve the effects of accurate recording, improved accuracy, and improved anti-interference ability

Pending Publication Date: 2019-01-01
QUJING BUREAU OF SUPERVOLTAGE POWER TRANSMISSION CHINA SOUTHERN POWER GRID
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AI Technical Summary

Problems solved by technology

The above technical solution has a small frequency response range, low detection accuracy, and the detection results of the leakage current in an environment with strong interference often cannot reflect the real situation, resulting in the failure of the monitoring of the arrester.

Method used

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  • Online monitoring device for arrester mixed current recording
  • Online monitoring device for arrester mixed current recording
  • Online monitoring device for arrester mixed current recording

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Embodiment Construction

[0021] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Such as figure 1 As shown, an arrester hybrid current recorder on-line monitoring device includes a hybrid electronic Rogowski current transformer (Rogowski current transformer) and a main control module. The hybrid electronic Rogowski current transformer is connected to the arrester to measure the operating (leakage) current and transient current (lightning impulse current, operation impulse current) of the arrester, and transmit the measured data to the main control module through the optical fiber. The module judges the operation status of the arrester according to the measurement data.

[0023] The hybrid electronic Rogowski current transformer uses the Rogowski coil as the sensing head on the arrester, which converts ...

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Abstract

The invention discloses an online monitoring device for arrester mixed current recording, which comprises a mixed electronic Rogowski current transformer and a main control module, wherein the mixed electronic Rogowski current transformer is connected onto the arrester for measuring the operating current, the lightning impulse current and the operating impulse current of the arrester, and measureddata are transmitted to the main control module through an optical fiber; and the main control module judges the operating condition of the arrester according to the measured data. The online monitoring device is reasonably designed, the mixed electronic Rogowski current transformer is used, a power electronics technology and a digital signal processing technology are used to realize functions ofarrester steady and transient current recording and online real-time monitoring, and the device has the advantages of high current detection precision and strong anti-interference ability.

Description

technical field [0001] The invention relates to the technical field of lightning arresters, in particular to an online monitoring device for mixed current wave recording of lightning arresters. Background technique [0002] Zinc oxide arrester is an electrical product used by power stations, substations and transmission lines to protect various electrical equipment in the power system from overvoltage damage, and is one of the important protection equipment to ensure the safe operation of the power system. The main function of the zinc oxide arrester is to absorb the impact energy of lightning overvoltage, operating overvoltage, etc., and prevent overvoltage from damaging electrical equipment and electrical equipment. Due to the long-term continuous operation voltage, impulse voltage and various external factors of the zinc oxide arrester, the aging of the resistor sheet will be accelerated, the insulation will be destroyed, and the resistive current will increase, and the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/25
CPCG01R19/25
Inventor 王典浪李东陈俊曹鸿李国艮魏纲陈静蒋龙刘宁杨晓维皮天满谢正波龚禹璐
Owner QUJING BUREAU OF SUPERVOLTAGE POWER TRANSMISSION CHINA SOUTHERN POWER GRID
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