Effect of Negative-sequence Current Generation in Islanding Detection and Unbalanced Fault Ride-through

カテゴリ: 部門大会

論文No: 26

グループ名: 【B】平成23年電気学会電力・エネルギー部門大会講演論文集

発行日: 2011/08/30

タイトル(英語): Effect of Negative-sequence Current Generation in Islanding Detection and Unbalanced Fault Ride-through

著者名: Tuyen Nguyen Duc (Shibaura Institute of Technology),Goro Fujita(Shibaura Institute of Technology),Toshihisa Funabashi(Meidensha Corporation),Masakatsu Nomura(Meidensha Corporation)

著者名(英語): Nguyen Duc Tuyen (Shibaura Institute of Technology),Goro Fujita(Shibaura Institute of Technology),Toshihisa Funabashi(Meidensha Corporation),Masakatsu Nomura(Meidensha Corporation)

キーワード: Dispersed Generation|Islanding detection|Negative-sequence Impedance|Negative-sequence Injection|Ride-through|Dispersed Generation|Islanding detection|Negative-sequence Impedance|Negative-sequence Injection|Ride-through

要約(日本語): In this paper, negative-sequence current injection has been fulfilled in power electronic interface for two important duties besides injecting reference power into utility grids. The first one is for islanding detection, and the other one is to enhance unbalance-fault ride-through capability of dispersed generation. This paper introduces a mechanism of negative-sequence injection based on controlling two separate coordinates of dq control and explains the effect of negative-sequence injection in limiting the unbalanced currents generated from a dispersed generation. Using Adaptive Notch Filter as a signal processing unit, negative-sequence components are observed. The performance of entire control system is evaluated by PSCAD simulation.

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