特高压GIS设备交接试验击穿放电定位技术研究

Research on Discharge Breakdown Locating of UHV GIS Commissioning Test

在1 100 kV GIS设备特殊交接试验过程中,现场耐压时,一旦设备放电击穿,如何快速确定放电位置是当前面临的一个难题。提出特高压1 100 kV GIS设备进行耐压交接试验时的放电击穿定位方法。介绍基于超声波和特高频检测技术的GIS击穿放电定位技术的基本原理及系统组成,并将该方法应用于某特高压站1100kV GIS设备现场交接试验中,实际应用案例证明该方法可实现设备放电击穿的快速精确定位,为特高压GIS设备的现场击穿定位技术提供参考。

In the process of over-voltage withstand testing of 1100 kV GIS,it is difficulty to find the breakdown spot.Several breakdown spot locating methods were introduced in this paper.The basic principle and system configuration of ultrahigh- frequency-detection and uhrasonic-wave-detection method,as well as their advantages/disadvantages were introduced.Through a practical case,we analyzed the judgment and locating methods of breakdown spot after breakdown discharge occurring in detail.This method offers a reference for breakdown locating method to UHV projects in the future.