变压器感应式振荡型操作冲击试验及局部放电测量技术

Inductive Oscillating Switching Impulse Test and Partial Discharge Detection Technology for Transformer

IEC 60060-3标准推荐的振荡型冲击电压波形具有易于调波、产生效率高的特点。针对变压器感应式振荡型操作冲击试验技术进行研究,论述了变压器感应式振荡型操作冲击电压的产生原理,对其参数计算方法进行了研究;并提出了在变压器进行操作冲击耐压试验的同时进行局部放电检测的方法。仿真和试验结果表明,采用所提出的方法可以使用低电压设备产生符合IEC 60060-3标准的高幅值振荡型操作冲击电压波形,便于开展变压器现场操作冲击耐压试验;在变压器进行操作冲击耐压试验的同时进行局部放电检测具有可行性。

The oscillating impulse voltage waveform recommend by IEC 60060-3 standard has the features of easily-adjusted wave and high generating efficiency. We investigated the inductive oscillating switching impulse test technology for transformer, discussed the generation principle of inductive oscillating switching impulse for transformer, and presented a parameters calculation method. The simulation and experiment results show that the high amplitude oscillating switching impulse waveform, which conforms to IEC 60060-3 standard, can be generated through low voltage impulse generator using the provided method, which makes it convenient to carry out field switching impulse test for transformer. The partial discharge detection method under transformer oscillating switching impulse test is feasible.