串联补偿器选址以提高输电能力的新方法  

A novel transfer capability enhancement approach based on optimal location of series capacitor

作　　者：康健[1] 王雷鸣[2] 潘淑杰[2] 

机构地区：[1]山东电力工程咨询院有限公司,山东济南250013 [2]国核电力规划设计研究院,北京100094

出　　处：《电工电能新技术》2011年第2期70-74,共5页Advanced Technology of Electrical Engineering and Energy

摘　　要：为了更好地利用串联补偿器对线路参数进行补偿,提高系统的输电能力,在计及不等式约束和电压稳定性约束条件下,基于连续潮流模型,提出了一种新的串联补偿器的安装策略:在有约束条件达到极限的临界运行点分析输电能力对支路电抗的灵敏度,根据此灵敏度排序结果确定最有利于提高输电能力的串联补偿器安装支路;并对这一灵敏度选址指标的使用条件进行了分析。该方法简单、易于实现。IEEE30节点和IEEE118节点系统的仿真计算结果表明,所提出的方法计算结果准确,具有一定的应用价值。Determination of location where series capacitor should be installed is important for enhancement of transfer capability.The strategy for selecting the optimal location of series capacitor is developed in this paper.It is known that the influence of constraints such as voltage limits,branch power limits and other electrical equipments limits and voltage collapse limits are critical for transfer capability.Considering some kinds of limits,transfer capa-bility is estimated by continuation power flow method.A formula for the first order sensitivity of the transfer capabil-ity with respect to transmission line’s reactance is deduced at the binding limit.The sensitivity formula is applied as an index for selecting the optimal location of series capacitor.The available condition that the index used for se-lecting the series capacitor optimal placement is also presented in this paper.Simulation results of IEEE 30-bus sys-tem and IEEE 118-bus system prove that the proposed method is effective and of practical value.

关 键 词：输电能力 串联补偿器 灵敏度 最优安装地点 连续潮流法 

分 类 号：TM715[电气工程—电力系统及自动化]