研制一种西门子技术换流阀接头直阻测试夹具

Development of a Test Fixture for SIEMENS Technology Converter Valve Joint Direct Resistance

换流阀作为直流输电系统中的关键设备,其内部接头发热问题严重影响设备的安全稳定运行。国网公司系统在运换流站主要采用西门子、ABB以及AREVA技术路线换流阀,其中西门子技术换流阀接头发热问题时有发生,接头直阻则为衡量接头是否发热的重要指标。当前直阻测试方法需专人携带仪器进入阀塔就近测试,存在人员高空坠落风险,且阀塔内空间狭小,操作不便,测试效率低下。针对当前直阻测试方法所存在的不足,提出了一种适用于西门子技术换流阀的直阻测试夹具,实现远距离直阻测试,无需进入阀塔即可完成测试,降低了人员劳动强度,提高了测试工作效率,并对该夹具的应用推广进行了详细说明。

As the key equipment in transmission system,the internal joint heating problem of converter valve seriously affected the safe and stable operation of the equipment.In the converter station of SGCC system,converter valves using SIEMENS,ABB and AREVA technology route were mainly used,among of them,SIEMENS technology converter valve joint heating problems often occurred,the direct resistance of the joint was an important index to measure whether the joint was heated or not.At present,the direct resistance test method required special personnel to carry instruments into the nearby valve tower for testing,there was a risk of falling from height,moreover,the space in the valve tower was narrow,the operation was inconvenient,and the test efficiency was low.Aimed at the shortcomings of the current direct resistance test method for joint heating,a kind of direct resistance test fixture suitable for SIEMENS technology converter valve was proposed,which realized the long distance direct resistance test,the test could be completed without entering the valve tower,it reduced labor intensity and improved testing efficiency.The application and popularization of the fixture were described in detail.