Parameter Identification of Short Parallel Double-Circuit Lines Based on PMU Measurements

doi:10.11930/j.issn.1004-9649.202001047

Abstract

Abstract: With the continuous increasing of short parallel double-circuit lines, it is an urgent problem to obtain their accurate parameters. In this paper, a new PMU-based method is proposed to estimate the parameters of short parallel double-circuit lines. Firstly, based on the coupling between conductors, the impedance model of short parallel double-circuit lines is deduced. And then, the corresponding short line phase angle correction method and the parameter estimation algorithm of short parallel double-circuit lines based on least square method are presented using the online PMU measurement data. The proposed model is complete, and the algorithm is simple and straightforward, which can accurately and quickly calculate all the parameters of short parallel double-lines. Case study has validated the effectiveness and correctness of the proposed method.

Key words: power system, parallel double-circuit lines, parameter identification, PMU, least square method

HUANG Xiaoxiao, YANG Tao, ZHENG Xiaolin, GUO Lingxu, LIN Jikeng. Parameter Identification of Short Parallel Double-Circuit Lines Based on PMU Measurements[J]. Electric Power, 2020, 53(7): 141-148.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202001047

https://www.electricpower.com.cn/EN/Y2020/V53/I7/141

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