单相电能表相线、中性线接反状态估计与分析  

State Estimate and Analysis on Reverse Connection of Live and Neutral Lines of Single-phase Electric Energy Meters

作　　者：李万 李景村 LIWan;LI Jingcun(Henan Polytechnic University,Henan Jiaozuo 454000,China;Shanwei Power Supply Bureau of Guangdong Power Grid,Guangdong Shanwei 516600,China)

机构地区：[1]河南理工大学,河南焦作454000 [2]广东电网汕尾供电局,广东汕尾516600

出　　处：《农村电气化》2022年第11期17-21,共5页Rural Electrification

摘　　要：单相电能表相线、中性线接反可能构成典型桥式电路。从电能表接入处的支线电路入手,通过等效和化简,进而由简单到复杂,从局部到整个低压系统,全面分析了等效桥式电路工况和三相不对称运行、多点接地或漏电对计量状态的影响;并用二元函数描述了电能表测量功率与负荷的关系,使计量状态的估计与分析更加清晰明了,对用电管理人员有一定实用价值,对电能表生产厂家也有一定参考作用。The reverse connection of the live and neutral lines of a single-phase electric energy meter may constitute a typical bridge circuit.This paper started with the branch circuit at the access point of the electric energy meter,through equivalence and simplification,and then from simple to complex,from local to the whole low-voltage system,compre‐hensively analyzed the influence on the metering state of equivalent bridge circuit operating conditions,three-phase asymmetric operation and multi-point grounding or leakage;And the relationship between the measured power and the load of the electric energy meter is described with a binary function,which makes the estimate and analysis of metering state clearer and has a certain practical value for the electricity management personnel.It also has certain reference for electric energy meter manufacturers.

关 键 词：电能表接反 桥式电路 负荷状态 计量结果 

分 类 号：TM933.4[电气工程—电力电子与电力传动]