起動停止回数と燃料消費量に対する制約を考慮した年間需給計画手法の開発

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  • Long-Term Generation Scheduling Method with Constrained Numbers of Unit Commitment and Fuel Constraints on Thermal Units
  • キドウ テイシ カイスウ ト ネンリョウ ショウヒリョウ ニ タイスル セイヤク オ コウリョ シタ ネンカン ジュキュウ ケイカク シュホウ ノ カイハツ

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The long-term generation scheduling in power utilities is aimed at maintaining power supply sufficiency and estimating fuel consumption. The multi-period constraints, such as allowable numbers of unit commitment on a thermal unit and fuel consumption under given total amount of fuel, need to be taken into appropriate consideration for practically economic scheduling in long-term scheduling horizon. Due to the large size and complexity of such scheduling problem, it is difficult to get the solution collectively in terms of stability and processing time in operational situations. We propose a new scheduling method which consists of “preparative processing” and “detailed optimization processing”. The former works to divide the long-term problem with the multi-period constraints in time unit of week according to quick and simplified scheduling result, and the latter to minimize total operation cost on the basis of those weekly partitioned problems. The processing starts with an optimal scheduling result excluding the two multi-period constraints aforementioned and proceeds to sequentially resolve the violation of the each constraint in quantitative consideration of interrelationship between them. This paper describes the validation and effectiveness of the proposed method through the real world example of Chubu Electric Power Company.

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