配电网最大供电能力模型解的性质  

Properties of Total Supply Capability Model Solution for Distribution Networks

作　　者：肖峻[1] 郭晓丹[1] 王成山[1] 祖国强[1] 

机构地区：[1]智能电网教育部重点实验室,天津大学,天津市300072

出　　处：《电力系统自动化》2013年第16期59-65,79,共8页Automation of Electric Power Systems

基　　金：国家高技术研究发展计划(863计划)资助项目(2011AA05A117);国家自然科学基金资助项目(51277129);教育部新世纪优秀人才支持计划资助项目(NCET-10-0624)~~

摘　　要：从数学角度对配电网最大供电能力(TSC)模型解的性质进行了研究。首先,将TSC模型推导为线性规划模型的一般形式,阐述其数学含义与物理意义。其次,分别给出TSC模型无解与唯一解时参数条件的数学表达式,得到实际配电网的TSC模型总是存在无穷多解的结论。为进一步找出众多解中易于在实际配电网中实现的解,针对TSC解的主变压器负载率均衡度进行分析,总结归纳出达到负载较均衡时的配电网联络与主变压器容量的匹配条件。最后,通过算例验证了结论的有效性。A comprehensive study is made on the properties of total supply capability （TSC） model solutions for distribution networks from a mathematical point of view. First, the TSC model is simplified to a general form of linear program, with its mathematical and physical meaning explained. Then, mathematical expressions for parameter condition are given when there is no or a unique solution. It is concluded that the TSC model has infinitely many solutions in actual distribution networks. Then, in order to find out the optimum operation from the solutions, the equilibrium degree of load rate （EDLR） is calculated and analyzed. Parameter matching conditions for network and main transformer capacity to make load more balanced are summarized for distribution systems. Finally, a case study is given to verify the effectiveness of the above conclusions.

关 键 词：配电网 最大供电能力 模型解 负载率均衡度 

分 类 号：TM711[电气工程—电力系统及自动化]