测量接地电流检测合成绝缘子污秽程度的可行性分析

通过对合成绝缘子体泄漏电流和表面泄漏电流分离测量,研究了合成绝缘子接地电流的特性,并将这两种泄漏电流与整体接地电流进行比较,同时分别研究了洁净和污秽合成绝缘子的接地电流。结果表明,污秽合成绝缘子整体接地电流与表面泄漏电流在幅值和波形上相同,因此可以通过测量绝缘子接地线上的电流来检测合成绝缘子的污秽程度。

Feasibility Analysis on Inspection of Composite Insulator Pollution Degree by Measuring Grounding Current

The leakage current in the matrix and on the surface of composite insulator were separated and measured to study the characteristics of the grounding current of composite insulator. The grounding current of composite insulator on clean and pollution condition was researched respectively and it was compared with the two kinds of leakage current mentioned above. The result indicates that the grounding current and surface leakage current of pollution composite insulator are the same in the change of amplitude and waveform, thus the pollution degree of composite insulator can be detected by measuring the current flow in the earth wire of insulator.