摘要
提出了能有效提高电网消纳风电等间歇式能源能力的发电计划在线滚动修正策略,并给出了其与日前计划优化的关系。同时,给出了相应的优化调度模型。基于拉格朗日对偶松弛法的框架,将原优化问题转换为拉格朗日对偶优化问题的主问题和子问题两部分。然后,基于模型凸规划的特点,提出了子问题的逆向递推的改进动态优化算法。该算法具有多项式复杂度的良好特性,整体算法效率很高,可以满足滚动调度的在线应用需求。文中所提出的策略和模型已在某省级电网中得到初步应用,算例测试表明所提出的策略和模型是有效的。
A strategy for on-line rolling generation dispatch is proposed for effectively accommodating large-scale wind power,and its relationship with day-ahead scheduling is given.A mathematic model for on-line rolling dispatch is also given.Based on the framework of Lagrange dual relaxation,a primary problem is transformed and decomposed into primal-problem and sub-problem of a dual problem.Then,an improved dynamic programming is developed for sub-problem based on the feature of convex function.The proposed method is proved to be very efficient,and meets the demands of on-line application.The proposed strategy and method are applied preliminary to a provincial power grid,and case studies show its effectiveness.
出处
《电力系统自动化》
EI
CSCD
北大核心
2011年第22期136-140,共5页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(51177080)
国家高技术研究发展计划(863计划)资助项目(2011AA05A101)
国家电网公司科技项目~~
关键词
发电计划
滚动调度
拉格朗日对偶松弛
风电接入
经济调度
generation scheduling
rolling dispatch
Lagrange dual relaxation
wind power penetration
economic dispatch
