一起110kV GIS电缆终端局放带电检测及原因分析

电网设备状态检测是开展状态检修工作的基础，随着110kV电缆输电线路的大量投入运行，在不停电检修的基础上通常采用带电检测技术来判断电缆线路的健康水平和故障发展趋势。本文针对实际运行中发现的一起GIS电缆终端局放异常现象，介绍了采用高频和特高频带电检测手段对异常信号进行初步定位，并采用时差法确定放电源，通过解体分析锁定放电故障范围，最后采用X光检测技术发现缺陷类型，并针对缺陷运用ANSYS软件模拟分析。

Partial Discharge Live Detection and Analysis of 110kV GIS Cable Terminal

Power grid equipment condition detection is the initial part for condition detection. With a large number of 110kV cable transmission lines are widely put into use, live detection technology is often applied to detect the condition and fault development trend. With a case of abnormal partial discharge of GIS cable terminal, we introduce an initial positioning to detect abnormal signal by HF and VHF live detection. And time difference method is applied to determine the discharge source. The discharge fault range is locked up by disassembly analysis. Finally, X-ray detection technology is applied to determine defect type and ANSYS is applied to have simulation analysis with defect.