计及梯级水电站群的水火电节能调度策略

发布时间：2018-12-20 10:37

【摘要】：考虑火电厂的发电机组出力、能耗成本及污染排放三者之间、及梯级电站出力与水力耦合参数之间,以及水火电机组之间综合效益基础上,建立了梯级水电站弃水量最小、火电能耗成本最低、和污染排放最小的多目标综合节能调度模型,并提出了计及梯级水电站的水火电节能发电调度策略;利用标度转换法,将梯级水电站弃水量最小、火电机组能耗成本最低和污染排放最小的多目标综合节能调度模型转化为不同权重系数下的单目标函数;运用混合惩罚函数优化算法将问题的求解转化为无约束优化问题,并利用Hessian矩阵改进了该优化算法,克服了缩减系数选择问题;通过对含4个梯级水电站、3个火电厂的水火电系统进行仿真,优化结果验证了该算法的可行性,并具有较明显的节能效果。
[Abstract]:Considering the three factors of generating unit output, energy consumption cost and pollution discharge, and the coupling parameters of cascade power station and hydraulic power station, as well as the comprehensive benefit of hydro-thermal motor group, the minimum abandoned water quantity of cascade hydropower station is established. The multi-objective comprehensive energy-saving dispatching model with the lowest cost of thermal power consumption and the minimum pollution emission is proposed, and the scheduling strategy of hydropower energy-saving generation with cascade hydropower stations is put forward. By using scale conversion method, the multi-objective comprehensive energy saving dispatching model of cascade hydropower stations, which has the lowest energy consumption cost of thermal power units and the lowest pollution emission, is transformed into a single objective function with different weight coefficients. The hybrid penalty function optimization algorithm is used to transform the problem into an unconstrained optimization problem and the Hessian matrix is used to improve the optimization algorithm to overcome the problem of the selection of reduced coefficients. Through the simulation of the hydro-thermal power system with four cascade hydropower stations and three thermal power plants, the optimization results show that the algorithm is feasible and has obvious energy-saving effect.
【作者单位】：贵州大学电气工程学院;
【基金】：国家自然科学基金项目(510670001)~~
【分类号】：TV737;TM73

【共引文献】