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Design method of lightning arrester

A design method and lightning arrester technology, applied in the manufacture of instruments, resistors, resistors, etc., can solve the problems of flashover on the surface of resistor sheets and easy ablation of adjacent qualified resistor sheets, so as to suppress the development of arcs, reduce failure rates, and avoid glitch effect

Active Publication Date: 2021-09-07
CHINA ELECTRIC POWER RES INST
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  • Description
  • Claims
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Problems solved by technology

[0004] In view of this, the present invention proposes a design method of a lightning arrester, aiming at solving the problem of flashover on the surface of defective resistors in the prior art and easy ablation of adjacent qualified resistors tablet problem

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  • Design method of lightning arrester
  • Design method of lightning arrester
  • Design method of lightning arrester

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Embodiment Construction

[0024] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0025] see figure 1 , figure 1 It is a flow chart of the design method of the arrester provided by the embodiment of the present invention. As shown in the...

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Abstract

The invention provides a design method of a lightning arrester. The method comprises the following steps: extracting a preset number of resistor discs from continuously produced resistor discs; injecting preset energy into each extracted resistor disc, and damaging the resistor discs; determining the rated energy of all the resistor discs according to the energy of all the resistor discs before damage and the probability allowable value of fault occurrence; determining the number of the resistor discs required in the lightning arrester according to the rated energy of all the resistor discs; assembling the resistor discs of which the number is determined, and carrying out arc isolation treatment to form the lightning arrester. According to the method, the rated energy of the resistor discs is determined in the sampling step, the damage test step, the energy determination step and the number determination step, so the number of defective resistor discs is greatly reduced and controlled within an allowable range, the failure rate of the lightning arrester is greatly reduced, the structural design of an existing lightning arrester is optimized in the assembling step, development of electric arcs is effectively inhibited, and faults of the lightning arrester are avoided.

Description

technical field [0001] The invention relates to the technical field of power equipment, in particular to a method for designing a lightning arrester. Background technique [0002] Large-capacity multi-column shunt arresters are widely used in DC converter stations, AC series compensation devices and other fields. The main function is to absorb redundant energy of the system and limit overvoltage. [0003] Operation experience shows that the large-capacity multi-column parallel arrester has a high failure rate due to the large number of parallel columns. Studies have shown that the main reason for the high failure rate of large-capacity multi-column shunt arresters is the existence of "short chips" (that is, defective resistor chips) with a very low probability, whose energy absorption is less than the rated value. When the "short chip" fails at the rated energy, a flashover occurs on the surface of the "short chip", and the flashover is very easy to ablate the adjacent qual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C17/00G01R31/00
CPCH01C17/00G01R31/003Y02E60/00
Inventor 张搏宇殷禹时卫东赵霞吕雪斌贺子鸣雷挺张兆华
Owner CHINA ELECTRIC POWER RES INST
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