Composite insulator return evaluation method

Abstract

The invention discloses a composite insulator return evaluation method, which is based on the operating life factor N1, the pollution level factor N2, the precipitation acidity factor N3, the annual average precipitation factor N4, the pulverization degree factor N5, the water repellency factor N6, and the broken string fault Rate factor N7, sheath electrical corrosion defect rate factor N8 to establish a return model, if the evaluation object's operating life factor N1, pulverization degree factor N5, hydrophobicity factor N6, broken string failure rate factor N7, sheath electrical corrosion defect rate If any one of the five factors of factor N8 is equal to 1, the evaluation result of the evaluation object is return; transport. The invention can not only greatly reduce the workload of sampling and laboratory material microscopic test, shorten the evaluation period, but also reduce the failure rate of composite insulators and improve the reliability of power supply.

Description

Technical field [0001] The present invention belongs to the field of power engineering, and more particularly to a composite insulator return assessment method. Background technique [0002] The rod-shaped composite insulator is widely used in my country's overhead transmission, and its deterioration is not ignored. Since the advent of self-existence, many experts at home and abroad have launched a long-term study on the aging of rod-shaped composite insulators, and proposed many feature parameters from micro-macro. However, with the maturity of the composite insulator process, the composite insulator electrical and mechanical properties of the current crimping process is difficult to find problems. [0003] In the actual operation, the composite insulator life is affected by a variety of factors: [0004] The first is the influence of the operation period. After the complex insulation is factory factory, whether it is running, the material has gradually gradually aging, the elec...

AI Technical Summary

Problems solved by technology

Although there is a certain relationship between hydrophobicity and the aging of composite insulators, and the deterioration of hydrophobicity affects its flashover characteristics, the pros and cons of hydrophobicity cannot fully reflect the aging degree of rod-shaped composite insulators, such as some rod-shaped composite insulators with excellent hydrophobicity Its surface has been severely pulverized, and the chemical bonds of the silicone rubber material have been severely broken, which shows that the hydrophobicity cannot uniquely reflect the aging characteristics of composite insulators

[0007] In addition, the broken series rate and the electrical corrosion defect rate are also important influencing factors. The broken series rate of composite insulators reaches a certain level, indicating that there may be defects in the process or formula of this batch of products, and it is not suitable to continue to operate.

The electrical corrosion defect rate of composite insulators reaches a certain level, indicating that there may be defects in the process or formula of this batch of products, and it is not suitable to continue to operate

[0008] To sum up, the service life of composite insulators is affected by many factors. However, the current composite insulator return evaluation method ignores certain weight factors, and the return judgment technology through the detection of materials requires sampling and laboratory tests to make the evaluation variable. complicated