电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
POWER SYSTM PROTECTION AND CONTROL
2013年
4期
55-60
,共6页
多目标%短期%优化调度%混合整数模型%梯级水电站
多目標%短期%優化調度%混閤整數模型%梯級水電站
다목표%단기%우화조도%혼합정수모형%제급수전참
multiple objectives%short-term%optimal dispatching%mixed integer model%cascade hydropower stations
为了充分体现水电优化调度带来的效益,提出了多目标短期梯级水电优化调度的混合整数模型.模型综合考虑水电发电效率和调峰性能,采用了系统中总剩余负荷量和剩余负荷峰谷差两个指标来评价优化方案.针对模型中的多个目标函数以及非线性的机组运行约束,基于模糊隶属度函数和混合整数建模方法,将多目标非线性优化问题转化为单目标混合整数线性规划问题(mixed-integer linear program, MILP),并采用先进的MILP软件包进行求解.通过某地区大规模梯级水电系统的算例分析,结果表明了所提模型的合理性和有效性.
為瞭充分體現水電優化調度帶來的效益,提齣瞭多目標短期梯級水電優化調度的混閤整數模型.模型綜閤攷慮水電髮電效率和調峰性能,採用瞭繫統中總剩餘負荷量和剩餘負荷峰穀差兩箇指標來評價優化方案.針對模型中的多箇目標函數以及非線性的機組運行約束,基于模糊隸屬度函數和混閤整數建模方法,將多目標非線性優化問題轉化為單目標混閤整數線性規劃問題(mixed-integer linear program, MILP),併採用先進的MILP軟件包進行求解.通過某地區大規模梯級水電繫統的算例分析,結果錶明瞭所提模型的閤理性和有效性.
위료충분체현수전우화조도대래적효익,제출료다목표단기제급수전우화조도적혼합정수모형.모형종합고필수전발전효솔화조봉성능,채용료계통중총잉여부하량화잉여부하봉곡차량개지표래평개우화방안.침대모형중적다개목표함수이급비선성적궤조운행약속,기우모호대속도함수화혼합정수건모방법,장다목표비선성우화문제전화위단목표혼합정수선성규화문제(mixed-integer linear program, MILP),병채용선진적MILP연건포진행구해.통과모지구대규모제급수전계통적산례분석,결과표명료소제모형적합이성화유효성.
The hybrid integer model of multi-objective optimal short-term scheduling for cascaded hydropower system is proposed, so as to fully realize the benefits of hydropower units. Two indicators which are the total surplus load and difference between peak and valley of the total surplus load are introduced to evaluate the scheduling scheme. This model takes into account both the power generation efficiency and performance of peak regulation of hydropower. Since the multi-objectives and the nonlinear constraints are included in the model, fuzzy membership function and mixed-integer modeling method are applied, and the nonlinear multi-objective optimal problem is transferred into the single-objective mixed integer linear programming (MILP) problem. And the proposed model is solved by the advanced MILP software. Through the analysis of real examples of large-scale cascaded hydropower system, the results show that the proposed model is reasonable and effective.
