SF6电气绝缘设备故障时气体特征分解物的检测及应用

SF6电气绝缘设备在电力系统中的应用越来越广泛，寻求设备故障判断的有效检测手段和判断方。法，对设备状态监测尤其重要。介绍SF6电气绝缘设备故障时的气体特征分解物的组成、故障判断经验和现场常用的几种检测方法，并从检测项目、测量范围、最小检测量及检测方式等方面对各检测方法进行应用分析，为有效、准确、快速判断电气设备故障类型及开展设备状态监测提供参考。建议将气体特征分解物检测纳入SF6电气绝缘设备预防性试验项目中。

Detection of gas decomposition products of SF6 gas-insulated electric equipment under faults and its applications

SF6 electrical equipment is widely used in power systems. Finding effective methods to detect and judge equipment faults is very important to equipment status monitoring. Composition of gas decomposition products, fault operation experiences and common field detection methods were discussed. Detailed analyses for those detection methods were given in the aspects of test items, measurement ranges, minimum volume fraction detectable and detection styles. The analyses can provide references fur effective and quick fault detection and online status monitoring of devices. It was proposed that the gas decomposition detection should be brought into the set of preventive tests of SF6 gas-insulated electrie equipment.