计及无功经济价值的配电网电容器优化配置  

Optimal planning of capacitor in distribution systems considering the reactive power value

作　　者：文明[1] 何禹清[1] 蒋海波 刘定国[1] 时谊 

机构地区：[1]湖南省电力公司试验研究院,湖南长沙410007 [2]中机国际工程设计研究院,湖南长沙410007 [3]许继电气股份有限公司,河南许昌461000

出　　处：《电力系统保护与控制》2011年第9期59-64,共6页Power System Protection and Control

摘　　要：提出了一种计及无功经济价值的配电网电容器优化配置方法。分析了并联电容器接入系统后,对系统网损、容量释放产生的经济价值和其本身具备的能量经济价值,并从经济学角度确定了电容器优化配置的一般原则。根据电路网络基本原理的简化分析,推导出单位无功与系统网损的定量关系,进而得出单位无功降损的线性化表达,并将非线性的无功选址优化问题转化成含整型变量的线性问题。新的优化模型中定量地考虑了无功的安装成本和经济价值。仿真结果表明,相对于其他方法,该方法确定的无功安装位置和容量更经济,效果更加明显。A novel method for optimal capacitor planning in distribution systems considering the reactive power value is presented.The economic value of shunt capacitors which decrease the system power loss and release the system capacity and its own energy economic value are analyzed.The general principle to install shunt capacitors is also derived from the economic view.Then,the quantitative unit relationship between reactive power and system loss is induced by simplified analysis using basic principle of electric networks, and the linearization expression of the unit reactive power loss reduction is obtained, then the non-linearization problem of optimal capacitor planning is changed into a linearization expression problem including integer variables.In this new optimization model,both the installing cost and economic value are considered quantitatively.Test results show that the capacitor planning using the presented method is more economic and has better effect compared with other methods.

关 键 词：电力系统 配电网 无功补偿 优化规划 经济效益 并联电容器 

分 类 号：TM53[电气工程—电器]