Visualization system of regional protection action signal of distribution network considering flexible DC device

Abstract:
In order to improve the convenience of detection of regional protection action signal in distribution network, a visualization system of regional protection action signal of distribution network considering flexible DC device is proposed. The signal acquisition model of regional protection action in distribution network is constructed, and the signal feature decomposition is realized by using the method of serial parallel integrated learning. Combining with the load forecasting and the output active power compensation method of the flexible DC device, the spectrum characteristic quantity of the signal is extracted. The spectrum analysis method is used to visually analyze and decompose the signal, and the flexible DC device and distribution are analyzed under the DC voltage time scale The associated information of regional protection action signal is reconstructed according to the signal three-dimensional spectrum to realize the visual system design of regional protection action signal in distribution network. The simulation results show that the method has high characteristic resolution and good static stability, which is convenient for the detection of distribution network regional protection action signal.