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Lightning arrester state diagnosis system based on online detection of impact action and leakage current

A leakage current and state diagnosis technology, applied in the direction of instruments, measuring electricity, measuring devices, etc., can solve the problems of complex transmission line conditions, inability to measure leakage current, and evaluate the status of arresters, etc., and achieve the effect of convenient and accurate judgment.

Active Publication Date: 2014-10-29
HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST +1
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Problems solved by technology

[0007] The relevant research status at home and abroad is still based on the monitoring of leakage current, but the transmission line arrester is divided into non-gap arrester and out-of-band series gap arrester. For the arrester with pure air gap, there is no leakage current in normal operation, so it cannot Evaluate the condition of the arrester by measuring the leakage current
Moreover, the conditions of the transmission line are complicated, and it is difficult to carry out preventive tests and live tests

Method used

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  • Lightning arrester state diagnosis system based on online detection of impact action and leakage current
  • Lightning arrester state diagnosis system based on online detection of impact action and leakage current
  • Lightning arrester state diagnosis system based on online detection of impact action and leakage current

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Embodiment Construction

[0033]In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.

[0034] This embodiment needs to monitor the following content:

[0035] 1. Evaluate the damp and aging status of the line arrester through the leakage current and resistive current of the transmission line arrester;

[0036] 2. Evaluate whether the arrester needs to be overhauled and replaced by the peak value of the action current and the number of actions of the arrester on the transmission line; according to relevant regulations, when the number of times the action current passing through the arrester is greater than the rated value is close to 20 times, th...

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Abstract

The invention discloses a lightning arrester state diagnosis system based on online detection of impact action and leakage current. Aiming to realize real-time monitoring to leakage current and lightning action characteristics of power line lightning arresters, the lightning arrester state diagnosis system evaluates running states of the lightning arresters on the basis of the real-time monitoring to leakage current and lightning action current of the power line lightning arresters, and analyzes correct actions, error actions and rejecting actions of the power line lightning arresters according to monitored data of the action current of the lightning arresters and data such as lightning current amplitude value of a lightning positioning system so as to realize online monitoring of running states and actions of the power line lightning arresters. The lightning arrester state diagnosis system is only powered by solar energy without extra power supply, capable of running 24 hours continuously, and capable of recording leakage current, small current, impact current, impact frequency, impact current peak, internal temperature and humidity of the lightning arresters and the like in real time to reflect the running states of the lightning arresters comprehensively. Data collected by the lighting arrester diagnosis system can be fed back to a system server to bring convenience for inspection staff to judge the running states of the lightning arresters accurately.

Description

[0001] technical field [0002] The invention belongs to the field of lightning protection equipment and relates to an online detection system for the state of a lightning arrester, in particular to a diagnosis system for online detection of the surge action and leakage current of the lightning arrester and then judging the state of the lightning arrester. [0003] Background technique [0004] At present, the power bureaus in various regions at home and abroad are promoting the use of metal oxide arresters on transmission lines to improve the lightning resistance level of transmission lines and reduce the lightning tripping rate of lines, thereby improving the reliability of power supply and meeting the requirements of industrial electricity consumption; therefore, line arresters have Wide development and application prospects. [0005] The important position of the arrester in the power system requires guaranteeing the normal operation of the arrester, which requires moni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 吴清王勇黄松唐祥炎王思捷张文兵梁亚峰陈林杰全业生
Owner HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST
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