【作者】 薛志英；

【导师】 梁志瑞；

【作者基本信息】 华北电力大学（河北） ， 电力系统及其自动化， 2005， 硕士

【摘要】 输电线路工频参数的准确性直接关系着电力系统计算的准确性、可靠性,以及系统的安全稳定运行,线路工频参数的实测工作具有十分重大的意义。本文在深入分析输电线路工频参数各种测量方法的基础上,建立起输电线路的数学模型,研究了基于两端信息的线路参数在线测量的原理和方法,并将耦合传输线理论应用到测量的难点问题——互感线路零序参数的测量当中,从理论上进行了严格的分析和推导,得出了一套计算公式,并对所提出的耦合传输线在线测量方法,进行实验验证。最后,完成了输电线路工频参数测量离线计算软件的编写,该软件能够实现与测量信号采集器通讯,将接收到的实测数据转化处理,计算出我们希望的线路参数。更多还原

【Abstract】 The accuracy of power frequency parameters of transmission line has huge effect on power system calculations and even the stability of operation. So actual measurement of parameters is of great importance. In this paper, a mathematical model of transmission line is put forward based on thorough analysis of various measurement methods at present. The theory and technique of online parameter measurement using data of both ends are studied. Coupling transmission line principle is applied to parallel transmission lines measurement, which is always hard to be done. Based on this principle, strict analysis and mathematical derivation are carried out, and a set of formula is worked out at the mean time. Emulation tests are done. Finally, the calculation software application of power transmission line measurement is developed by VC++ programming language. This program can communicate with single chip microcomputer. And use the received data for calculation to work out the parameters needed.更多还原