THE STUDY OF REJECTING PERIODIC INTERFERENCE IN PARTIAL DISCHARGE MEASUREMENT SYSTEM BY DIRECT TRAP WAVE FILTER

In the paper,periodic interference in PD monitoring system and its characteristics are analyzed. A suitable method of rejecting periodic interference in PD wide bandwidth monitoring through direct wave trap filter is proposed. The principle and design method are discussed.. Experiment results are given. The results prove the method novel and effective. In filter process it is possible to compress the data and to extract the characteristics value.