基于微分方程的互感线路参数带电测量研究与实现

简要回顾了基于增量法的互感线路参数带电测量方法，提出了两种基于全球卫星定位系统(GPS)和微分方程的互感线路参数带电测量新方法，并给出了详细的数学模型。介绍了基于最小二乘法的测量数据的处理方法，给出了数字仿真结果。最后介绍了采用增量法和微分方程方法两种带电测量方法对西北电网330kV互感线路参数的带电测量，给出了具体的测量接线图和测量结果。实测结果表明带电测量方法测量方便、测量精度高，完全能满足工程要求。

PRINCIPLES AND REALIZATION OF LIVE LINE MEASUREMENT OF PARAMETERS OF TRANSMISSION LINES WITH MUTUAL INDUCTANCE BASED ON DIFFERENTIAL EQUATIONS

The incremental method of live line measurement of parameters of transmission lines with mutual inductance is reviewed. Then, based on GPS technology and differential equations, two new methods are proposed. Principles and mathematical models of new methods are explained. Data processing method by least square method is introduced in the measurement, moreover, RTDS simulation results with new methods are given. Finally, an example of live line measuring two 330kV transmission lines with mutual inductances in Northwest China power network is given, wiring diagram and live line measurement results are given. Comparison results between the incremental method and the differential equation method. The field measurement results show that new methods can meet the needs of live line parameter measurement of transmission lines.