开关柜局部放电检测技术应用及研究现状

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摘  要：开关柜是配网系统的核心设备。潜伏性缺陷是导致开关柜绝缘事故的重要原因。局部放电检测是预警设备突发性绝缘故障的重要手段。该文根据开关柜局部放电的特征，分析等检测技术的应用特点，总结3种技术的研究现状。最后介绍基于3种方法综合的声电联合检测法，并对技术未来研究方向进行展望。

关键词：开关柜;局部放电;暂态对地电压;超声波;特高频

中图分类号：TM591      文献标志码：A          文章编号：2095-2945（2022）26-0172-04

Abstract： Switchgear is the core equipment of distribution network system. Latent defect is an important cause of switchgear insulation accident. Partial discharge detection is an important means for early warning of sudden insulation faults of equipment. In this paper， according to the characteristics of partial discharge in switchgear， the application characteristics of equal detection technology are analyzed， and the research status of three technologies is summarized. Finally， the acousto-electric joint detection method based on the synthesis of three methods is introduced， and the future research direction of the technology is prospected.

Keywords： switchgear; partial discharge; Transient Earth Voltage; Ultrasonic; Ultra High Frequency

开关柜是配网系统的核心设备，其可靠性直接决定了终端用户的供电质量。（剩余5705字）