基于改进电量法及前推回代法的高渗透率新能源配电网线损计算研究  

Research on Line Loss Calculation of High Penetration New Energy Distribution Network with Improved Energy Quantity Method and Forward Push-back Method

作　　者：李晓军 李铁成 崔童飞 杨潇 杜建桥 LI Xiaojun;LI Tiecheng;CUI Tongfei;YANG Xiao;DU Jianqiao(State Grid Hebei Electric Power Research Institute,Shijiazhuang 050021,China;Technology Branch of Hebei Zhongxing Jineng Power Development Co.,Ltd.,Shijiazhuang 050021,China)

机构地区：[1]国网河北省电力有限公司电力科学研究院,河北石家庄050021 [2]河北中兴冀能电力发展有限公司科技分公司,河北石家庄050021

出　　处：《河北电力技术》2024年第5期12-19,共8页Hebei Electric Power

基　　金：国网河北省电力有限公司科技项目(kj2022-010)。

摘　　要：分布式电源(DG)的高比例接入使得配电网潮流双向流动,传统的线损计算方法不再适用。首先,针对传统电量法电压与功率因数需全网一致假设条件的限制,提出电压电量法和电压功率因数电量法;然后,对多种分布式电源进行节点类型建模,提出改进前推回代法,实现对高渗透率配电网线损的精细求解;最后,对某地区实际配电线路进行计算,探究各种线损计算方法的误差及适用条件,并通过3种场景对比分析分布式电源接入容量、位置及其他参数对配电网电压以及线损的影响,验证了改进电量法以及改进前推回代法的可行性,对配电网线损计算具有参考意义。The high penetration of Distributed Generation(DG)leads to bidirectional power flow in distribution networks,which rendering traditional line loss calculation methods inadequate.Firstly,in view of the limitation of the assumption that voltage and power factor should be consistent in the whole network,the voltage-power method and the voltage-power factor method are proposed.Then,various types of DG are modeled,and an improved back forward sweep method is proposed to achieve accurate and detailed line loss calculation in distribution networks with high penetration.Finally,the calculations are conducted on an actual distribution line in a certain region to assess the accuracy and applicability of different line loss calculation methods.Furthermore,through comparative analysis of three scenarios,the impact of DG integration capacity,location,and other parameters on network voltage and line losses is explored,and the feasibility of the improved quantity method and the improved push-back method is verified,which is of great significance for the line loss calculation of the distribution network.

关 键 词：高渗透率光伏配电网 线损计算 改进前推回代法 电压电量法 电压功率因数电量法 

分 类 号：TM711[电气工程—电力系统及自动化]