Measurement system construction of transient waveform signal source

The power source of the distribution automation terminal detection platform is one of the important devices for simulating the fault signal of the distribution network and testing the performance of the distribution safety equipment. The power source is programmable, and a fault signal is written to it, and the power source can be used to simulate the corresponding fault signal, which is of short duration, usually a transient signal. In this paper, a measurement system based on the transient signal of the analog output of the power source is constructed, and the quality of the measured signal waveform is evaluated. In this paper, the transient signal is divided into transient voltage signal and transient current signal, and the voltage and current are repeatedly measured by two measurement systems. The maximum offset of the signal amplitude and the maximum offset of the phase are used to evaluate the difference between the measured transient signal and the transient signal waveform written to the power source, and to evaluate whether the performance of the power source is intact. The amplitude and phase maximum offset obtained by the experimental data are small, showing a high uniformity, and it can be concluded that the power source used in this paper has good performance and can accurately simulate the output fault signal.