A 500kv post insulator live water washing method

Abstract

The invention relates to a method and device for flushing a 500kV post insulator with charged water. The method comprises the following steps of: when the 500kV post insulator is flushed with charged water, pressurizing de-ionized water via a high pressure water pump, transmitting the pressurized de-ionized water into a high pressure water gun via a high pressure water tube, opening a high pressure water valve on the high pressure water gun, laying out the positions of four flushing workers with water guns in hands according to charged water flushing water gun positions of four water guns of the 500kV post insulator, and safely flushing dirt on the surface of the 500kV post insulator based on a one-flush three-return charged water flushing procedure of the four water guns of the 500kV post insulator or a two-section even charged water flushing procedure of the four water guns of the 500kV post insulator to reduce the dirt to a safe level. The method and device disclosed by the invention have the advantages of no need of power-cut cleaning, benefit for the stability of an electric power system, convenience and safety for on-site flushing, no dead flushing space, capability of preventing electric devices from causing flashover and the like.

Description

technical field [0001] The invention relates to a water flushing method for 500kV post insulators, in particular to a charged water flushing method for 500kV post insulators. Background technique [0002] The power equipment and transmission lines of 500kV high-voltage substations are exposed to nature for a long time, especially in industrial areas, coastal areas and saline-alkali areas. filthy. These pollutions containing salt, acid, and alkaline components encounter humid weather conditions such as fog and rain, and the pollution layer on the surface of the insulator will be wetted, the conductivity will increase, the insulation performance will decrease, the leakage current will increase sharply, and its flashover voltage will be greatly reduced. At this point contamination flashover may occur. Therefore, regular cleaning of 500kV live equipment pollution is an important measure to reduce pollution flashover in 500kV transmission system. [0003] At present, 500kV hig...

AI Technical Summary

Problems solved by technology

[0003] At present, the dirty cleaning of 500kV high-voltage substations mainly adopts power outage manual cleaning, but when the manual cleaning of 500kV high-voltage substations is carried out, the substation must be powered off, which causes many transmission lines to stop power supply

In the manual cleaning of 500kV high-voltage substations, due to the limitation of human operation, there are many dead spots in the cleaning, resulting in unsatisfactory cleaning results, and there is still a risk of flashover in the power transmission system after cleaning.

[0004] 500kV electrified water flushing can well solve the problems of manual cleaning requiring power outages, dead angles in cleaning, and unsatisfactory cleaning effects.

In the previous 500kV charged water flushing, due to unclear specifications for the conductivity of deionized water and the flushing method, many flashovers occurred in the 500kV charged water flushing

In addition, the 500kV high-voltage substation needs to carry out live water washing equipment mainly post insulators, so the washing method for 500kV post insulators is relatively large

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