基于扩展功率方程的分布式发电配网的网损分摊数值模拟  

Numerical Simulation of Network Loss Allocation in Distributed Power Distribution Network Based on Extended Power Equation

作　　者：朱锐 黎劲松 陈建东 刘丛乐 金朝意[2] ZHU Rui;LI Jin-song;CHEN Jian-dong;LIU Cong-le;JIN Chao-yi(Xinjiang Tianfu Energy Co.,Ltd.,Shihezi 832000 China;Nanjing Nanrui Jibao Electric Co.,Ltd.,Nanjing 210000 China)

机构地区：[1]新疆天富能源股份有限公司,新疆石河子832000 [2]南京南瑞继保电气有限公司,江苏南京210000

出　　处：《自动化技术与应用》2021年第7期104-107,178,共5页Techniques of Automation and Applications

基　　金：江苏省产学研合作项目(编号BY2019042)。

摘　　要：大量分布式电源的接入给配电网的运行及控制带来了全新的挑战,在网损分摊计算中存在有功损耗较高、与实际分摊数值相差较大等问题。为此,提出基于扩展功率方程的分布式发电配网的网损分摊数值模拟方法。从支路传输功率模型出发,将节点注入系统内部的功率划分为两部分;其中一部分作为节点向系统传输功率过程中产生的损耗,该部分损耗采用系统网损代表。另一部分为节点,向系统负荷提供功率。在网络变量中加入扩展功率方程,对拓展后的雅克比矩阵进行求逆,实现分布式发电配网的网损分摊计算。采用有限元软件进行数值模拟,将数值模拟结果和实验结果进行对比,实验结果验证了所提方法的有功损耗较低,更贴近实际损耗值。The access of a large number of distributed power supply brings a new challenge to the operation and control of distribution network.There are some problems in the calculation of network loss allocation,such as high active power loss,large difference between the actual allocation value and so on.Therefore,based on the extended power equation,a numerical simulation method for loss allocation of distributed generation distribution network is proposed.Starting from the branch transmission power model,the power injected into the system by the nodes is divided into two parts.One part is the loss generated in the process of power transmission from the nodes to the system,which is represented by the system network loss.The other part is the node,which provides power to the system load.The extended power equation is added to the network variable,and the Jacobian matrix is inversed to realize the network loss allocation of the distributed generation distribution network.The finite element software is used for numerical simulation,and the numerical simulation results are compared with the experimental results.The experimental results show that the active power loss of the proposed method is lower and closer to the actual loss value.

关 键 词：扩展功率方程 分布式发电 配网网损分摊 数值模拟 

分 类 号：TM74[电气工程—电力系统及自动化]