摘要
本文提出了水火联合电力系统长期优化调度的数学模型,较全面地考虑了负荷预侧的不确定性、火电机组发电出力的随机性以及水电厂径流来水的随机性,推导出水电厂径流来水相互独立、相邻时段相关和上、下游水电厂同时段径流相关三种情况下优化调度模型.通过分解协调原理将整个优化问題分成火电子问題和水电子问题,火电子问题用等微增率准则求解,水电子问題按河系分解成一系列小问题,用随机动态规划方法求解,最后将两个子问题适当协调起来.
A long-term optimal scheduling model for hydrothermal power systems is proposed,including the uncertainty of load forecasting and thermal unit generating power,and tsochastic river inflows,Recursion formulas for solving the model are developed when river inflows between different periods of a hydroplant are independent,or river inflows between two snccessive periods of a hydroplant are correlated,or river inflows between upper and lower hydroplants located on the same river in the same peried are correlated.The overal optimal problem is decomposed into thermal and hydro subproblems and then appropriately coordinated to find the overall optimal solutions.
出处
《水电能源科学》
北大核心
1992年第1期48-57,共10页
Water Resources and Power
关键词
电力系统
优化
调度
数学模型
hydro-thermal power system, optimal scheduling, large-scale system, economical dispatch, decomposition-coordination, method, reservoir operation
