Method and device for selecting arcing horn and insulator string in overhead transmission line

Abstract

The invention provides a method and device for selecting an arcing horn and an insulator string in an overhead transmission line. The selection method comprises the following steps: selecting a presetarcing horn according to an impact withstand voltage value which needs to be borne by the arcing horn in the transmission line, and determining the withstand voltage value of the preset arcing horn;obtaining the withstand voltage value of the insulator string according to the given parameters of insulators and the number of the insulators; calculating effectiveness index parameters of the presetarcing horn for the insulator string according to the withstand voltage value of the preset arcing horn and the withstand voltage value of the insulator string; and determining the arcing horn and the insulator string according to the validity index parameters. On the premise of discharging randomness, selection and matching of the arcing horn and the insulator string are facilitated, reference can be provided for selection and matching of the arcing horn and the insulator string under the condition that a complete test is not needed, the efficiency of selecting the arcing horn and the insulator string is improved, the reliability is high, the period of the method is short, and the cost is low.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a method and a device for selecting arc strike angles and insulator strings in overhead power transmission lines. Background technique [0002] Adding the arcing angle to the insulator string is a dredging lightning protection method, which is widely used in foreign countries. It is mostly used on the grounding electrode line in my country. The key parameter of its design is the matching coefficient between the arcing angle gap and the length of the insulator string, which is taken as The value affects the protective effect of the arc angle on the insulator string. At present, the matching relationship between the arc angle gap and the insulator string is mostly determined based on experimental research at home and abroad. The reliability of the test research results has direct guiding significance for determining the arc angle gap. However, the experimental research has the disadvan...

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention provides a method and device for selecting the arcing angle and insulator strings in overhead transmission lines to solve the problems of low efficiency, long cycle and high cost in selecting matching arcing angles and insulator strings

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