联合检测技术在换流变压器乙炔异常中的应用

The combined detection technology on acetylene abnormality fault of the convertor transformer

针对一起特高压直流输变电工程调试阶段换流变压器乙炔超标问题,对现有检测技术进行全面分析,提出一种基于油色谱检测、高频局部放电检测、特高频局部放电检测、超声波局部放电检测的联合检测技术。应用结果表明:该联合检测技术能高效、准确地查找出换流变压器的故障数量、故障类型及故障部位。

Aiming at the acetylene content out of limit problem of convertor transformer during a UHV DC transmission and transformation project debugging phase, analyzes deeply available detecting technology, puts forward a combined detecting technology based on oil chromatography detecting method, high frequency partial discharge, ultra high frequency partial discharge and ultrasonic partial discharge detecting method. The application result shows that this combined detecting technology can effectively and accurately detect the number, types and locations of the fault in convertor transformer.