An Improved Calculation Method of Distribution Network Harmonic Power Flow Considering Phase Sequence Characteristics of Harmonics

doi:10.3969/j.issn.1000－7229.2016.10.014

Abstract

Abstract: As different order harmonics have different phase sequence characteristics, this paper proposes an improved calculation method of harmonic power flow for distribution network. Firstly, we analyze the phase sequence characteristics of harmonics. Next, we deduce the transformer models under different harmonic phase sequence with taking the impacts of transformers winding connection modes, connection set and neutral point grounding impedance on harmonic power flow into account; and discuss the calculation model of other electrical elements of distribution system with considering phase sequence. On this basis, the harmonic power flow with different phase sequences in MATLAB we analyzed. Finally, taking the IEEE 33-bus system and a practical distribution network including photovoltaic power station as examples, the power flow with or without considering phase sequence characteristics was calculated and the results were compared with the simulation results in PSCAD, which verify the feasibility and correctness of the proposed method.

Key words: harmonic power flow, phase sequence characteristics, transformer, distribution network

CLC Number:

TM 72

SONG Mengqi, TAO Shun. An Improved Calculation Method of Distribution Network Harmonic Power Flow Considering Phase Sequence Characteristics of Harmonics[J]. Electric Power Construction, 2016, 37(10): 100-.

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