适合于机组组合问题的扩展优先顺序法  

Extended priority list method for unit commitment problem

作　　者：黎静华[1] 兰飞[1] 

机构地区：[1]广西大学电气工程学院,广西南宁530004

出　　处：《电力系统保护与控制》2010年第2期1-7,共7页Power System Protection and Control

基　　金：国家自然基金项目(50907012);广西大学科研基金项目(DD020015);广西教育厅科研基金(200808LX163)

摘　　要：针对传统PL(Priority List)方法采用单一排序指标,即平均满负荷费用AFLC(Average Full-Load Cost)不能全面反映机组优先顺序的不足,提出一种扩展优先顺序法EPL(Extended Priority List)解决机组组合问题。在分析PL方法特点的基础上,定义μ-LoadCost反映机组在不同出力范围内的经济指标,形成不同μ值的机组组合的邻域,而后定义机组的效用系数UUR(Unit Utilization Ratio)优化机组的优先顺序。此外,引入参数控制机组组合邻域的规模并采取策略对机组组合进行调整使其满足所有约束,从而提高计算效率。最后采用26机组、38机组以及45机组24时段等3个系统的测试结果来验证该方法的有效性。This paper presents a new EPL（Extended Priority List） approach for determining the unit commitment to improve the traditional PL （Priority List） method which can＇t provide sufficient information for determining the optimal commitment order by using single economic index AFLC（Average Full-Load Cost）. A new index （μ -Load Cost） which can reflect unit＇s economy of different output is defined to broaden economic indexes. By using μ-Load Cost, a neighborhood of unit commitment is formed. Then Unit Utilization Ratio （UUR） is defined to optimize unit＇s commitment order by conjunction with μ-Load Cost. Furthermore, this paper uses some parameters to control the scale of neighborhood and adopts some heuristics strategies to fulfill operational constraints, which improve the capacity obviously. At last, the presented EPL method is verified by three test systems 26 units, 38 units and 45 units.

关 键 词：机组组合 扩展优先顺序法 经济调度 机组效用系数 邻域搜索 

分 类 号：TM73[电气工程—电力系统及自动化]