采用统计学方法估计台区三相不平衡对低压线损的影响  

Using Statistical Methods to Estimate Impact of Three Phase Imbalance in Substation Area on Low Voltage Line Losses

作　　者：苏斌 张雅 李程 吕思濛 张健 李小军 廖强强 SU Bin;ZHANG Ya;LI Cheng;LYU Simeng;ZHANG Jian;LI Xiaojun;LIAO Qiangqiang(State Grid Hanzhong Power Supply Company;Shanghai Electric Power University;Xi'an Jiaotong University;State Grid Shaanxi Electric Power Research Institute)

机构地区：[1]国网汉中供电公司 [2]上海电力大学 [3]西安交通大学 [4]国网陕西电力科学研究院

出　　处：《上海节能》2023年第4期476-480,共5页Shanghai Energy Saving

摘　　要：在低压配电网台区,严重的三相不平衡现象会导致线损的急剧增加,甚至影响用电设备的正常运行。分析了三相不平衡对线损的影响,提出采用统计学方法计算三相不平衡引起的能量损失的期望和方差的方法,该方法利用统计数据获得不平衡引起的能量损失的概率分布,为配电网公司以最小的数据估计不平衡引起的能量损失提供了方法,对低压线损估算的影响因素进行了讨论。In the low voltage distribution network area,severe three phase imbalance can lead to a sharp increase in line loss,and even affect the normal operation of electrical equipment.Analyzed the impact of three phase imbalance on line loss,and proposed a statistical method to calculate the expected and variance of energy loss caused by three phase imbalance.This method utilizes statistical data to obtain the probability distribution of energy loss caused by imbalance,providing a method for distribution network companies to estimate energy loss caused by imbalance with the minimum amount of data.The influencing factors of low voltage line loss estimation are discussed.

关 键 词：三相不平衡 能量损失 线损评估 统计学 

分 类 号：TM73[电气工程—电力系统及自动化]