基于HELM网损灵敏度的配电网无功优化研究  

Research on Reactive Power Optimization of Distribution Network Based on HELM Loss Sensitivity Method

作　　者：赵亦岚 朱小燕 盛文洋 高慧敏[2] 陈健琳 ZHAO Yilan;ZHU Xiaoyan;SHENG Wenyang;GAO Huimin;CHEN Jianlin(Hangzhou Electric Power Design Institute Co.,Ltd.,Hangzhou 310012,China;College of Automation,Hangzhou Dianzi University,Hangzhou 310018,China)

机构地区：[1]杭州市电力设计院有限公司,杭州310012 [2]杭州电子科技大学自动化学院,杭州310018

出　　处：《浙江电力》2020年第9期1-7,共7页Zhejiang Electric Power

基　　金：国家电网有限公司科技项目(198006);浙江省自然科学基金项目(LQY19E070001)。

摘　　要：目前配电网无功优化中多采用前推回代法进行潮流计算,并基于雅可比矩阵进行灵敏度分析来确定配电网无功补偿点。但这种方法计算的是系统基础潮流节点的灵敏度值,受电力系统潮流方程的非线性特性影响,选出的点容易集中在重负荷支路。对此,提出基于HELM(全纯函数嵌入方法)网损灵敏度的计算方法,可以快速计算出节点网损灵敏度,根据HELM的s阶数可得出任意阶数的网损分项灵敏度,并提出基于聚类和HELM分项网损灵敏度进行配电网无功补偿选点及无功优化。最后,通过实例计算,验证了该方法的有效性。Forward and backward substitution method is adopted to calculate power flow in reactive power optimization of distribution networks,and sensitivity analysis based on the Jacobi matrix is used to determine the reactive power compensation point of distribution networks.However,the method is employed to calculate the sensitivity value of the fundamental power flow node,and the selected points quite often locate at heavy load branches due to the nonlinear characteristics of the power flow equation.Therefore,the paper proposes a loss sensitivity calculation method based on HELM(holomorphic embedding load method),which can quickly calculate loss sensitivity at the nodes and conclude the sensitivity of loss subitems with items by S-order of HELM;furthermore,it proposes reactive power compensation location and reactive power optimization based on clustering and loss sensitivity of HELM subitems.Finally,the method is proved effective by examples.

关 键 词：HELM 潮流计算 灵敏度分析 配电网 无功优化 无功补偿选点 

分 类 号：TM714[电气工程—电力系统及自动化]