A Series Type BTB Converter for Controlling Voltage Profile in Loop Distribution System with Distributed Generations

カテゴリ: 部門大会

論文No: 38

グループ名: 【B】平成19年電気学会電力・エネルギー部門大会講演論文集

発行日: 2007/09/12

タイトル(英語): A Series Type BTB Converter for Controlling Voltage Profile in Loop Distribution System with Distributed Generations

著者名: Rejeki Simanjorang(大阪大学),三浦友史(大阪大学),伊瀬敏史(大阪大学)

著者名(英語): Rejeki Simanjorang()

キーワード: back to back converter|Controlling voltage|distributed generations|loop distribution system|series type btb converter|back to back converter|Controlling voltage|distributed generations|loop distribution system|series type btb converter

要約(日本語): Connecting Distributed Generations (DGs) into distribution system has presented a challenge of controlling voltage profile in distribution system. In the presence of DG, voltage profile of distribution system becomes non-uniform and might turn to large fluctuating voltage at loads. As a result of this drawback, there is need for strict limitation on injected power by DG. This paper proposes an effective method to overcome the problem of increase/decrease of voltages in distribution system in the presence of DG, which will also result in higher permissible injected power by DG. Voltage problems caused by DG can be solved by changing radial to loop distribution system and using series type Back To Back (BTB) converter to control voltage inside loop. A series type BTB converter is installed at the sending end voltage for loop feeder and it is used to control voltage at two control points inside loop. In this study, the control point positions are assumed to be the same with the position of control point for controlling tap changer of transformer. By controlling voltage at these control points, voltage profiles inside loop are also subsequently controlled and can reduce the operation frequency of tap changer in transformer too. The effectiveness of the proposed method is shown to require small size of series type BTB converter and simple circuit. Theoretical analysis is discussed and simulation results are shown to verify the proposed method

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