考虑远期合同及环路潮流约束的电力市场均衡分析  

On equilibrium in electricity markets considering forward contracts and loop flow constraints

作　　者：王瑞庆[1] 李渝曾[2] 张少华[2] 

机构地区：[1]安阳师范学院计算机与信息工程学院,河南安阳455000 [2]上海大学自动化系,上海200072

出　　处：《电力系统保护与控制》2008年第17期8-12,23,共6页Power System Protection and Control

基　　金：国家自然科学基金项目(50377023);上海市教委科技发展基金项目(05AZ28)~~

摘　　要：环路潮流是电力网络的重要特征,分析其对电力市场均衡和发电商策略性远期合同交易行为的影响具有重大的现实意义。建立了一个考虑环路潮流约束的策略性远期合同市场和现货市场联合古诺均衡模型,该模型所描述的均衡问题是一个具有均衡约束的均衡问题,可用非线性互补方法求解。仿真算例验证了模型的合理性和模型求解方法的有效性。结果表明,环路潮流对电力市场均衡和发电商的策略性远期合同交易均具有不可忽视的影响,若在分析中忽略环路潮流约束,可能给出错误的价格信号,得出不合理的结论。Loop flow constraints are the important peculiarities of electric power systems, and it is meaningful to analyze the impact of loop flow constraints on electricity market equilibrium and generators＇ strategic forward contracting. A joint Cournot equilibrium model for strategic forward contracting and spot market competition is proposed by taking loop flow constraints into account. This model Can be reformulated as an equilibrium problem with equilibrium constraints and be solved by a nonlinear complementarity method. A numerical example is presented to verify the effectiveness of the proposed model and solution method. The results show that loop flow constraints are more relevant to electricity market equilibrium and generators＇ strategic forward contracting. If neglecting loop flow constraints, error price signals and unreasonable results may be derived.

关 键 词：电力市场 环路潮流约束 策略性远期合同交易 古诺均衡 输电约束 非线性互补方法 

分 类 号：F407.61[经济管理—产业经济]