A Fast Method to Compute Reactive Power Margins for Branch Outage Contingencies

カテゴリ: 全国大会

論文No: 6-071

グループ名: 【全国大会】平成14年電気学会全国大会論文集

発行日: 2002/03/26

タイトル(英語): A Fast Method to Compute Reactive Power Margins for Branch Outage Contingencies

著者名: 李 華強(広島大学),餘利野 直人(広島大学),佐々木 博司(広島大学)

著者名(英語): Li Huaqiang(Department of Artificial Complex System Engineering,Hiroshima University),Naoto Yorino(Department of Artificial Complex System Engineering,Hiroshima University),Hiroshi Sasaki(Department of Artificial Complex System Engineering,Hiroshima University)

要約(日本語): Contingency analysis of power system is a very important task in power planning and operation. In general, a branch outage contingency may result in the overload and voltage drop. Specially, in some most severe cases voltage collapse may occur. Althrough there are some methods for evaluating the voltage stability, it is also necessary for planner or operator to determine the reactive power margins of system so as to make preventive/corrective control measures to maintain the system stable. These examinations will need information on reactive power margins in contingencies. Since there are a large number of contingency selections to be analyzed，a fast computation method is required.This paper decribes a fast method to compute the reactive power margins in post-fault conditions. First, the voltage values in post-fault conditions with respect to the saddle node bifurcation are effectively evaluated based on sensitivity analysis, which is further improved by using a line search technique. The obtained voltages are used to compute the reactive power margins. The effectiveness of the proposed method is demonstrated through IEEE 14, 30, 57 system.

原稿種別: 日本語

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