Composite insulator operation performance state evaluation method suitable for special industrial dust area

Abstract

The invention relates to the technical field of insulator performance detection, in particular to a composite insulator operation performance state evaluation method suitable for a special industrial dust area. The method comprises the following steps: S1, sampling insulators in a special industrial dust area; S2, measuring the pollution degree of the surface of the insulator by using an equivalent salt deposit density method to obtain a basic pollution flashover voltage value V0 of the insulator under the pollution degree; S3, carrying out insulator leakage distance loss analysis; S4, analyzing the hydrophobic performance of the surface of the insulator through a water spraying classification method; S5, calculating a pollution flashover voltage predicted value V1 of the insulator; S6, tracking and evaluating the operation performance state of the insulator in the special industrial dust area regularly. The objective of the invention is to provide the composite insulator operation performance state evaluation method suitable for a special industrial dust area aiming at the defects in the prior art, the flashover probability is effectively reduced, and safe and stable operation of a power transmission line is guaranteed.

Description

technical field [0001] The invention relates to the technical field of insulator performance detection, in particular to a composite insulator operating performance state evaluation method suitable for special industrial dust areas. Background technique [0002] Pollution flashover is the most harmful type of flashover to the safe operation of the power system. In special industrial dust areas, due to the fast pollution on the surface of insulators and the special pollution components, creepage or arcing may occur on the surface of composite insulators. Formation of ablation, in addition, there may be acid and alkaline corrosion, resulting in a significant decrease in the electrical performance of the insulator, accelerating the corrosion failure of traditional silicone rubber anti-fouling materials, short operating life of the insulator, and difficult operation and maintenance. At this time, the operating life of composite insulators in special areas is often significantly ...

AI Technical Summary

Problems solved by technology

[0002] Pollution flashover is the most harmful type of flashover to the safe operation of the power system. In special industrial dust areas, due to the fast pollution on the surface of insulators and the special pollution components, creepage or arcing may occur on the surface of composite insulators. Form ablation, in addition, there may be acid and alkaline corrosion, which will lead to a significant decrease in the electrical performance of the insulator, and accelerate the corrosion failure of traditional silicone rubber antifouling materials. The insulator has a short operating life and is difficult to operate and maintain.

At this time, the operating life of composite insulators in special areas is often significantly shorter than the expected life. Common material tests often show that the insulators are less aging at this time, but in fact, the electrical performance of the insulators at this time has declined significantly. There is a possibility of pollution flashover accidents

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