DCPD acquisition and analysis for HV storage capacitor based on Matlab

High-voltage storage capacitor is the key device in weapon system, high reliability is required. In the process of storage and application, effective measurements are needed to ensure the insulation capability of capacitors. Usually, partial discharge (PD) is used to detect the insulation status of capacitors. Under DC there does not exist fundamental parameter Phi , so a new parameter delta (t) is introduced .Adopting data acquisition and analysis system with single trigger based on Matlab software, PD of four typical defect models under DC condition is obtained. Data of DCPD signals was analyzed through q, n, delta (t) distribution figures, from which obvious differences can be obtained. All results can provide data foundation for pattern recognition of high-voltage storage capacitors.