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悬挂绝缘子串有玻璃盘式绝缘子自爆脱落情况原因

网址:www.jgcbxgc.com  2019-11-22  作者:admin    阅读:

悬挂绝缘子串有玻璃盘式绝缘子自爆脱落情况,自爆绝缘子给变电站的安全运行带来隐患。玻璃盘式绝缘子自爆具有"早期暴露,逐年下降的特点,从变电站安全运行的角度讲应该适时将自爆后的残锤更换成新的绝缘子。
The suspension insulator string has the condition of glass disc insulator falling off by self explosion, which brings hidden danger to the safe operation of substation. Glass disc insulator self explosion has the characteristics of "early exposure, decreasing year by year". From the perspective of safe operation of substation, the residual hammer after self explosion should be replaced with new insulator in time.
其原因为1、玻璃绝缘子自爆后会影响绝缘子串的有效绝缘长度,当绝缘子串的有效绝缘长度低于绝缘子串最小有效绝缘长度时,绝缘子串便会被高压电流击穿,引发线路跳闸,造成安全事故。2、自爆后的玻璃绝缘子如果未及时更换,在雷击天气或污闪情况下有可能造成残锤绝缘子的钢脚被烧坏而导致绝缘子掉串。
The reasons are as follows: 1. The effective insulation length of insulator string will be affected after the self explosion of glass insulator. When the effective insulation length of insulator string is lower than the minimum effective insulation length of insulator string, the insulator string will be broken down by high voltage current, causing line trip and safety accident. 2. If the glass insulator after self explosion is not replaced in time, it may cause the steel foot of the residual hammer insulator to be burnt out and the insulator string to fall under the condition of lightning stroke or pollution flashover.

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