摘要
本文提出采用阻抗式电气距离计算方法,求解一个时间断面下配电网的负荷中心。具体做法是基于潮流计算结果,在电源注入功率、电源电压、网络损耗和负荷总量不变的前提下,将配电负荷求和构建等效负荷,在电源与等效负荷间建立一条虚拟线路,此线路损耗等于潮流求解的配电网总损耗,根据稳态功率传输原理求解虚拟线路阻抗和等效负荷电压。此虚拟线路阻抗就是电源到负荷中心的距离。准确的负荷中心将对配电网重构、无功优化调度和经济运行等配电网在线优化运行技术产生积极地推动作用。
In view of the time-varying characteristics of load center,this paper proposes a method of impedance type electrical distance to solve the load center of distribution network basing on power flowing calculation.The specific steps are as follows:Based on the power flow calculation results,on the premise that the power injection power,power supply voltage,network loss and total load are unchanged,the distribution load is summed to build an equivalent load,and a virtual line is established between the power supply and the equivalent load,the line loss is equal to the total loss of the distribution network solved by power flow,and the impedance of virtual line and the voltage of equivalent load are solved according to the steady-state power transmission principle.The impedance of virtual line is the electrical distance from the source to the load center.Accurate load center will play a positive role in the online optimal operation technology of distribution network,such as distribution network reconfiguration,reactive power optimal dispatch and economic operation.
作者
张峰
丁津津
王江权
鲍海
王子恒
ZHANG Feng;DING Jin-jin;WANG jiang-quan;BAO Hai;WANG Zi-heng(Institute of Power System Research,Electric Power Research Institute of State GridAnhui Electric Power Co.,Ltd.,Hefei 230601 China;Anqing Power Supply Company of State Grid Anhui Electric Power Co.,Ltd.,Anhui Buried Hill,Anqing 246000 China;Institute of Power System Research,School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206 China)
出处
《自动化技术与应用》
2023年第4期64-66,86,共4页
Techniques of Automation and Applications
关键词
阻抗式电气距离
在线计算方法
electrical distance of impedance type
on line calculating method
