摘要
为了方便电网工作人员快速、方便地判断台区关口表的接线是否发生接线错误,本文分析并使用Matlab软件仿真了多种条件下关口表可能出现的错接情况,包括三相线电流幅值相同时的两相反接和三相反接情况,以及一相线电流幅值与其他两相不同时的两相反接和三相反接情况。本文求解出了描述错误功率随功率因数角变化的公式以及错误功率与实际功率的大小关系,得出了在电网正常运行时,关口表在上述接线错误中测得的功率将明显减小这一结论。电网工作人员可以通过比较关口表数据和台区末端用户表数据之和来快速确认此台区关口表是否发生接线错误。
In order to facilitate the power grid staff to quickly and easily determine whether the gateway meter on this station area has wiring fault, this paper made theoretical analysis and simulated possible fault in the gateway meter in various situations. These errors include two-phase reversal and three-phase reversal when the line current amplitude of three phases are the same, as well as the line current amplitude of one phase is different from the other phases. The formula of the wrong wattage and power factor angle was worked out in this paper. And the relationship between sizes of wrong wattage and real wattage was found. It is concluded that the wattage measured in the above wiring faults will be obviously reduced when the power grid is in normal operation. Power grid staff can compare the gateway meter data and the user data from the end of the station to quickly confirm whether there is a wiring fault in this station area.
出处
《电气技术》
2018年第1期29-33,39,共6页
Electrical Engineering
关键词
台区
关口表
功率
功率因数
接线错误
station area
gateway meter meter
wattage
power factor angle
wiring fault
作者简介
刘含筱（1994-），男，山东省潍坊市人，硕士研究生，研究方向为电力系统的智能监测和状态维修。
