多功能输电线路参数测试系统设计

Design of parametric test system for multifunctional transmission line

输电线路是电力系统的重要组成部分,其工频参数包括零序参数、正序参数和互感阻抗等,是进行电力系统继电保护整定计算、潮流计算等工作的重要参数。本文设计的多功能输电线路工频参数测试系统由下位机和上位机构成。上位机利用Labview程序实现输电线路参数的计算、分析、显示和存储,下位机完成输电线路电流、电压信号的采集。

Transmission line is an important part of power system,line-frequency parameters of transmission consist of zero-sequence parameters,positive-sequence parameters,mutual inductance impedance and so on,all the parameters are necessary for setting calculation of relay protection,power flow calculation,etc.This paper introduces the multifunctional system of power frequency parameters electrical measurement of transmission line,it is presented to two parts：the lower computer and the upper,the PC software can calculate,analysis,display and save transmission parameters by labview program,The lower computer complete the line current and voltage acquisition.