适用于不同电价机制的统一机组组合算法  

UNIFORM APPROACH TO UNIT COMMITMENT WITH DIFFERENT PRICE MECHANISMS

作　　者：江健健[1] 康重庆[1] 夏清[1] 黄永皓[1] 孟远景[2] 何南强[2] 尚金成[2] 

机构地区：[1]清华大学电机系,北京市100084 [2]河南省电力公司,河南省郑州市450052

出　　处：《电力系统自动化》2004年第8期27-31,44,共6页Automation of Electric Power Systems

基　　金：国家重点基础研究专项经费资助项目(G1998020311);清华大学基础研究基金资助项目(JC2002018)

摘　　要：现有电力市场中存在两种结算电价机制:按机组报价结算(一机一价)和按市场出清价格结算(统一电价)。不同市场之间的结算方式也有所不同,例如,双边交易中采用一机一价结算方式,而实时市场中采用边际电价结算方式。不同结算电价机制下,机组组合的目标函数不同,传统机组组合方法必须根据电价机制的不同进行调整。通过研究发现,两种结算方式下机组组合问题的最优条件具有类似的数学表达形式。基于这一统一的最优条件表达形式,提出了一种新的机组组合算法。与传统拉格朗日松弛法相比,新算法能够有效地求解两种电价机制下的机组组合问题。There are two main price mechanisms in current electricity markets, pay-as-bid (PAB) and uniform market-clearing-price (MCP), e.g. the price mechanisms in the bilateral contract market might be different from that in real-time market. Different price mechanisms make the objective functions of unit commitment problems different, which causes traditional algorithms must be tuned to solve unit commitment problems in different markets. The research shows that the optimal conditions of unit commitment problems with PAB and MCP share the same mathematical expressions. On the basis of these uniform optimal conditions, this paper proposes a novel algorithm for unit commitment in electricity markets. Compared with traditional Lagrangian relaxation methods, this algorithm can efficiently solve the unit commitment problems with both PAB and MCP.

关 键 词：动态规划 电力市场 拉格朗日松弛法 机组组合 

分 类 号：F224[经济管理—国民经济]