电网技术
電網技術
전망기술
POWER SYSTEM TECHNOLOGY
2014年
3期
616-621
,共6页
袁旭峰%韩士博%熊炜%邹晓松
袁旭峰%韓士博%熊煒%鄒曉鬆
원욱봉%한사박%웅위%추효송
节能发电调度%梯级水电站%内点法%外点法%混合惩罚函数法
節能髮電調度%梯級水電站%內點法%外點法%混閤懲罰函數法
절능발전조도%제급수전참%내점법%외점법%혼합징벌함수법
energy-saving generation scheduling%cascaded hydropower stations%interior point method%external point method%mixed penalty function method
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。
攷慮火電廠的髮電機組齣力、能耗成本及汙染排放三者之間、及梯級電站齣力與水力耦閤參數之間,以及水火電機組之間綜閤效益基礎上,建立瞭梯級水電站棄水量最小、火電能耗成本最低、和汙染排放最小的多目標綜閤節能調度模型,併提齣瞭計及梯級水電站的水火電節能髮電調度策略;利用標度轉換法,將梯級水電站棄水量最小、火電機組能耗成本最低和汙染排放最小的多目標綜閤節能調度模型轉化為不同權重繫數下的單目標函數;運用混閤懲罰函數優化算法將問題的求解轉化為無約束優化問題,併利用Hessian 矩陣改進瞭該優化算法,剋服瞭縮減繫數選擇問題;通過對含4箇梯級水電站、3箇火電廠的水火電繫統進行倣真,優化結果驗證瞭該算法的可行性,併具有較明顯的節能效果。
고필화전엄적발전궤조출력、능모성본급오염배방삼자지간、급제급전참출력여수력우합삼수지간,이급수화전궤조지간종합효익기출상,건립료제급수전참기수량최소、화전능모성본최저、화오염배방최소적다목표종합절능조도모형,병제출료계급제급수전참적수화전절능발전조도책략;이용표도전환법,장제급수전참기수량최소、화전궤조능모성본최저화오염배방최소적다목표종합절능조도모형전화위불동권중계수하적단목표함수;운용혼합징벌함수우화산법장문제적구해전화위무약속우화문제,병이용Hessian 구진개진료해우화산법,극복료축감계수선택문제;통과대함4개제급수전참、3개화전엄적수화전계통진행방진,우화결과험증료해산법적가행성,병구유교명현적절능효과。
Considering the overall benefit among generating unit output, energy consumption cost and pollution emission of thermal power plant and that between output of cascaded hydropower stations and hydraulic coupling parameters as well as that between hydropower generating units and thermal power generating units, a comprehensive multi-objective energy-saving scheduling model, in which the minimized surplus water quantity of cascaded hydropower stations, the lowest energy consumption cost of thermal power plant and minimized pollution emission are taken as the objectives, is established, and an energy-saving generation scheduling strategy of hydropower and thermal power plants, in which the cascaded hydropower stations are taken into account, is proposed. Using scale conversion method, the built multi-objective scheduling model is turned into single objective function with different weight coefficients, and utilizing the mixed penalty function optimization algorithm the solution of the model is turned into unconstrained optimization problem and this optimization algorithm is modified by Hessian matrix, thus the selection of reduction coefficient is solved. Through the simulation of a hydropower-thermal power system containing four cascaded hydropower stations and three thermal power plants, the feasibility of the modified optimization algorithm is validated by optimization results, besides simulation results also show that using the proposed method an obvious energy-saving effect can be achieved.