Research and Application of Calibration and Comparison System for Partial Discharge Live Detection Equipment

The accurate and comprehensive evaluation of parameters for the detection equipment are carried out in order to standardize the manufacturing process, the on-site application and the operation maintenance of partial discharge type detection equipment. The ultra-high frequency, high frequency, ultrasonic and transient ground voltage partial discharge detection method are researched and established the corresponding performance verification and comparison system and platform based on the partial discharge research for power grid equipment. The key characteristic parameters of four kinds partial discharge detection equipment are given out such as the average effective height, detection sensitivity, dynamic range, transmission impedance, detection frequency, linearity error and stability, etc. At the same time, a comparative study on the performance tests of different types of PD detection equipment has been carried out. Compared with domestic equipment, the performance parameters of imported sensors are better than those of domestic equipment, which it can provide a reference basis for the network access test and acceptance criteria of partial discharge type live detection equipment in the next step.