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Lightning protection method of 10kv power distribution circuit

A distribution line, 1.10kv technology, applied in cable installation, electrical components, overhead installation, etc., can solve problems such as damage to distribution lines and electrical equipment, and achieve the effects of reliable operation, simple installation and low cost

Inactive Publication Date: 2012-08-01
FUSHUN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +1
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems in the above-mentioned prior art, the present invention provides a lightning protection method for 10kv power distribution lines, which solves the problem of frequent accidents of power distribution lines and electrical equipment being damaged due to overvoltage in the prior art

Method used

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  • Lightning protection method of 10kv power distribution circuit
  • Lightning protection method of 10kv power distribution circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] Select 10kV distribution lines to be included in the lightning location system;

[0017] Install discharge counters on all lightning arresters on the selected distribution lines;

[0018] After each thunderstorm, check the action of the discharge counter, and then check the parameters and graphs displayed by the lightning positioning system to obtain the nature of the lightning overvoltage, that is, whether it is a direct lightning strike, an induced lightning strike, or a counterattack lightning strike;

[0019] If it is a direct lightning strike, replace it with a supporting insulator with a high flashover voltage and a large creepage ratio distance on the line section prone to direct lightning strikes, and install a group of lightning arresters with gaps that meet the insulation coordination every two base poles;

[0020] In the case of induction lightning, in the line section where induction lightning is prone to occur, each base pole is installed with a set of ligh...

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Abstract

The invention relates to a lightning protection method of a 10kv power distribution circuit. Through applying a thunder and lightning positioning system and a counter on the power distribution circuit, under the condition that the normal safety operation of the normal power distribution circuit is not influenced, the action situation of a discharge counter is observed after the thunderstorm each time, and parameters and atlas displayed by the lightning position system are observed again, so that the thunder and lightning overvoltage properties can be judged, thus corresponding preventive measures are worked out purposefully, and the accident that the power distribution circuit and electrical equipment are frequently damaged because of overvoltage is eradicated; and the system is simple to mount, low in cost and reliable in operation.

Description

technical field [0001] The invention relates to a lightning protection method, in particular to a lightning protection method for a 10kv power distribution line, and belongs to the field of electric power applications. Background technique [0002] With economic development, the number and length of 10kV lines are increasing, and the types and applications of arresters are also increasing. However, accidents caused by overvoltage of distribution lines and electrical equipment are more frequent. Summarize the main problems in the following three aspects: 1. How to verify whether the distribution line has suffered lightning overvoltage. 2. How to determine the form of lightning overvoltage (direct lightning strike, induction lightning, counterattack lightning). 3. How to verify whether the protection performance of the arrester is excellent. Contents of the invention [0003] Aiming at the above-mentioned problems in the prior art, the present invention provides a lightnin...

Claims

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Application Information

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IPC IPC(8): H02G7/00
Inventor 王清昊杨英刘国斌裴玉杰庞艳君
Owner FUSHUN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY
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