振动法检测支柱绝缘子缺陷的研究

Vibration Method for the Defects Detection of Post Insulator

高压支柱式瓷绝缘子是发电厂和变电站的重要组成设备,在电网中有大量应用。近年来,支柱绝缘子在电网运行时因断裂导致的各类事故时有发生,对电网的安全运行构成了严重威胁。笔者从"4·10深圳停电"的典型案例说起,论证了采用振动法检测支柱绝缘子缺陷的可行性,设计实验对比检测完好和破损的支柱绝缘子,从中发掘振动检测的规律,并与传统的超声波检测进行应用对比,进一步证实了振动法检测支柱绝缘子缺陷不仅可行,而且高效,为这一检测技术的后续研究和推广提供了支持。

High voltage porcelain post insulator is an important equipment of the power plant and substation in a power system. In recent years, the post insulator faults due to cracking often happen when the power grid is in operation, which endangers the safe operation of the power system. This paper takes ＂4 10 Shenzhen Blackout＂ as an example to verify the feasibility of the vibration detection method for detecting post insulator. Experiment is designed for detection of the intact and damaged post insulators in order to explore the regularity traditional ultrasonic detection, efficient. of vibration detection. The vibration and the result confirms the vibration detection method is compared with the detection method is both feasible an defficient.