基于改进潮流跟踪的网损分摊方法  

A network loss allocation method based on improved power flow tracking

作　　者：杨慧彪 祁鑫 邵鹏 王运 YANG Huibiao;QI Xin;SHAO Peng;WANG Yun(Power Dispatch and Control Center,Ningxia Power Grid,Yinchuan 750001,China)

机构地区：[1]宁夏电网公司电力调度控制中心,宁夏银川750001

出　　处：《电子设计工程》2021年第4期168-171,176,共5页Electronic Design Engineering

基　　金：宁夏电网有限责任公司重点科技项目(NXKJXM2017013)。

摘　　要：为解决传统潮流跟踪算法未考虑线路阻抗差异,导致所产生的分摊结果与实际网损存在差异的问题,提出了一种改进潮流跟踪方法,并将其应用于网损分摊中。与传统潮流跟踪算法相比,改进方法充分考虑了线路阻抗对网损的影响,并得出网损与线路潮流之间的定量表达式。通过对节点电压的合理限定,给出了发电厂出力与网损之间的简化表达式。基于某地区的电网实际数据构造算例,对比了传统潮流跟踪与改进潮流跟踪算法下不同电厂分摊系数的差异。结果表明,改进潮流跟踪算法能够更准确地反映发电厂对网损的影响,可以有效提升电网运行效益、降低损耗。In order to solve the problem that the traditional power flow tracking algorithm does not consider the line impedance difference,resulting in the difference between the allocation result and the actual network loss,this paper proposes an improved power flow tracking method and applies it to the network loss allocation.Compared with the traditional power flow tracking algorithm,the improved method fully considers the influence of line impedance on power loss,and obtains the quantitative expression between power loss and line power flow.Through the reasonable limit of node voltage,the simplified expression between power plant output and network loss is given.Based on the actual data of a power grid in a certain region,the differences of the allocation coefficients of different power plants under the traditional power flow tracking algorithm and the improved power flow tracking algorithm are compared.The results show that the improved power flow tracking algorithm can more accurately reflect the impact of the power plant on the network loss,and can effectively improve the operation efficiency of the power grid and reduce the loss.

关 键 词：潮流跟踪 网损分摊 线路阻抗 线路潮流 发电厂出力 

分 类 号：TN92[电子电信—通信与信息系统] TP391[电子电信—信息与通信工程]