同塔四回输电线路参数带电测量

为了解决同塔多回线路各参数的测量,探讨了基于GPS技术的互感线路参数带电测量理论及方法。论述了采用的基本原理“增量法”后论证了其数学模型并简单介绍了所采用的测量系统。以大连南雁500 kV线路参数测量工程项目为例,介绍了同塔4回、并存在多条互感线路条件下的线路参数带电测量技术及实施步骤及测量结果,用其它测量方法对部分测量结果的检验表明,文中介绍的带电测量方法基本可满足工程需要。对该方法需进一步改进和提高之处作了简要的阐述。

Discussion on Live Line Measurement of the Parameters of the Transmission Lines with Four-circuit on a Tower

Theory and method of on line measurement of parameters of transmission lines with mutual inductance based on GPS technology are introduced in this paper.The basic principle-"incremental method" is discussed,the mathematic model is demonstrated,and the measurement adopted system is introduced simply.As an example,on line parameter measurement of the 500 kV transmission lines in Dalian Nanyan is given.In this example,the measuring technique and operating steps for the transmission line with four circuits on one tower,which is with multi-mutual inductance among lines,are introduced.The experimental results are given,and partial measurement results are verified through the comparison with the results by other measuring methods,it proves the correctness of the proposed approach.The results show that the on line measurement method proposed in this paper can meet engineering requirement.It is the first time to use this method in practical project.The improvement and upgrade of this method are expounded briefly and concisely.