Synchronous phasor measuring device and phase angle difference measuring device between buses using the same

摘要

Using the real-time frequency and the voltage instantaneous value time-series data, the voltage instantaneous value time-series estimated data and the current voltage estimated value are calculated by the least square method. The current voltage effective value is obtained using the calculated instantaneous voltage value time-series estimation data, and the current synchronous phasor and the voltage distortion degree are calculated using the current voltage effective value and the current voltage estimated value. Ask.