高压电气设备绝缘内部局部放电特性的试验研究

Experimental Study on the Partial Discharge of High-Voltage Electrical Equipment Insulation

通过设计局部放电回路检测系统,采用脉冲电流法对高压电气设备常见的两种典型缺陷进行局放试验,用Matlab对数据进行后续处理,绘制出设计试验系统下局部放电的特征参量图谱,并进行分析。结果表明:该试验系统能够模拟仿真局部放电的特征,试验验数据与理论分析相符合。

To better understand partial discharge（PD） characteristics of high-voltage electricalequipment insulation,a PD detection system was designed.Two typical high-voltage electricalequipment defects were tested by pulse current method.The equipment data were collected by oscilloscope and processed by Matlab software,with which the discharge pulse waveform of partial discharge was plotted.The discharge characteristic parameters of the two typical defects were obtained by analyzing the pulse waveform.The results show that the test system can simulate the characteristics of partial discharge.The experiment data coincides with the theory analysis.