Research on Distribution Line Identification and Simulation Based on Sequence Impedance Method

doi:10.16182/j.issn1004731x.joss.20-FZ0317E

Abstract

Abstract: The field fault test of distribution network cannot be repeated frequently, a line parameter identification and fault waveform reproduction method based on sequence impedance method is proposed to build the line sequence resistance model, and the π type equivalent lines are constructed. Based on the data of each node obtained in the field test process, the positive sequence impedance and zero sequence impedance parameters of π type equivalent circuits of all line sections are obtained by using the principle of symmetrical sequence components, and the digital model of the real lines in the field is established. The simulation results show that the short circuit ground fault obtained by this method has a high similarity to the original fault waveform, which verifies the practicability of the line parameter identification and fault waveform reproduction technology.

Key words: measured data, line parameter identification, fault waveform reconstruction technology, reverse modeling, sequence impedance method

CLC Number:

TP391.9

Liu Keyan, Dong Weijie, Ye Xueshun, Bai Muke, Zhang Huaitian. Research on Distribution Line Identification and Simulation Based on Sequence Impedance Method[J]. Journal of System Simulation, 2020, 32(10): 1964-1971.

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