A fast hybrid system for PD measurement

A fast partial discharge (PD) measurement system is described, which employ s analog as well as digital signal processing to achieve high sensitivity a nd discharge pulse resolution with low spectral distortion. Data on apparen t charge, time of pulse occurrence and instantaneous applied voltage are st ored in memory for subsequent information retrieval and treatment. The PD m easurement system is designed to provide an integrated response to rapid ri se time pulses of 1 to 2 ns, with suitable filtering added to reject extran eous noise.