連接水系を考慮した最適運用計画決定手法

概要

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This paper presents a novel method for optimal scheduling of hydraulically coupled power plants with operation constraints.In a hydro thermal power system, the operation schedule of hydro plants becomes more important to reduce the fuel cost of thermal plants, as the ratio of the hydro plants becomes larger. But hydraulically coupled power plants have some specific constraints depending upon the operations of the upstream plants, which makes the optimization problem more complicated.The proposed method is based on a decision process of an expert operation planner. First it calculates the most economical operation schedule without respect to the operation constraints of hydraulically coupled power plants. If this initial schedule violates the operation constraints of hydraulically coupled power plants, it is modified successively so as to dissolve each violation with most economical manner.The method is heuristic, but it can be widely applied to general problems as specify the river systems characteristics.Due to the above-mentioned method, the obtained schedule becomes easily acceptable because the intermediate schedules can be checked by the operation planners.