自由化環境における停電コストを考慮した電力貯蔵設備の費用便益評価

  • 都留 大和
    東京大学 大学院工学系研究科電気工学専攻
  • 藤井 康正
    東京大学 大学院新領域創成科学研究科先端エネルギー工学専攻

書誌事項

タイトル別名
  • Cost Benefit Analysis of the Power Storage System Considering Outage Cost in the Deregulated Power Market
  • ジユウカ カンキョウ ニ オケル テイデン コスト オ コウリョシタ デンリョク チョゾウ セツビ ノ ヒヨウ ベンエキ ヒョウカ

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抄録

In this paper, the authors propose the mathematical model which derives the optimal operation strategies of an on-site power storage system through the use of stochastic dynamic programming technique. The model takes account of the variations and uncertainties of electricity market prices as well as the outage costs of power grid failures. The market price fluctuation is modeled with stochastic differential equation. The stochastic state transitions between normal and failed systems are modeled with exponential density functions. The derived optimal operation indicates that the economic value of the storage system may be increased substantially, if the avoided outage costs are explicitly taken into account. The results of the sensitivity analysis indicate that the most influential parameters are the magnitude of outage cost and the mean time to failure of power grid.

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