Research of Composite Insulator Detection Device Based on Electric Field Method and Resistance Method

Detecting the low value insulator in the insulator string on-line is of great significance to the safe and stable operation of power system. It is one of the most important technical problems in the construction of HVDC transmission project in our country. At present, there are many researches on HV AC insulator strings both at home and abroad, but HVDC is the only mode of transmission recently used, and there are few researches on this kind of transmission lines. In view of this new problem, after a number of our research design, invented a DC insulator for high voltage zero line detection device, the detection device can effectively detect low and zero value insulators, and through the wireless data transmission system for realtime measurement of insulator shows low value zero data, then the data can be playback and the backup test results.