【作者】 刘严； 谭忠富； 韩勇； 乞建勋；

【Author】 LIU Yan TAN Zhong-fu HAN Yong QI Jian-xun (Institute of Electric Power Economics North China Electric Power University,Beijing 102206,China)

【机构】 华北电力大学电力经济研究所；

【摘要】 本文提出一种确定机组组合的降维半解析动态规划方法,可以与其他经济调度算法相结合,用以解决多种约束条件下的机组组合问题。该方法通过比较各时段负荷及机组参数,剔除各时段下不满足要求的组合状态,从而减少动态规划中的状态点数;根据机组的最小连续运行、停运时间限制,以及机组功率上升、下降速度的约束,剔除了状态点间的无效路径,从而减少了动态规划的路径个数,达到降维的目的;在确定机组启停状态后,再采用解析法进行机组的功率分配,可以大大提高动态规划方法的效率。更多还原

【Abstract】 A dimension-reduced semi-analytical dynamic programming approach is presented in this paper,which is a modification of the heuristic dynamic programming approach that could be committed with other economicdispatch arithmetic used to solve the problem of unit commitments with restrictions.This approach eliminates thecommitments that cannot meet the requirements by comparing loads and units parameters during every period,to re-duce the numbers of statuses in dynamic programming.It also eliminates the invalid paths between statuses consid-ering the restriction of minimum continuous time of on and off,and tamps rates,so reduces the numbers of paths indynamic programming,attaining aim of reducing dimensions.After confirming the running or suspending status ofunits,the approach is used to distribute powers among units,increasing greatly the efficiency of dynamic program-ming.This arithmetic is proved to be simple,effective and applicable tested by numeral examples.更多还原