采用惯性传感器的输电导线舞动监测系统

Conductor Galloping Monitoring System Based on Inertial Sensor for Transmission Lines

为避免导线舞动扭转导致计算出的相对位移与实际运动偏差,设计了基于惯性传感器的导线舞动监测系统,对系统中的导线舞动无线监测传感器、导线舞动状态监测装置(CMD)、状态监测代理(CMA)等部分进行了硬件设计和舞动定位算法设计。利用惯性传感器设计,既考虑了导线自激振荡引起的舞动,也考虑了导线扭转运动引起的舞动。搭建了模拟导线舞动的测试平台,对系统可行性进行了测试,并对采用加速度传感器和惯性传感器2种方法进行比较,通过模拟实验结果表明:系统可有效对舞动进行监测,仅采用加速度传感器测量和计算的位移偏大,而利用惯性传感器测量和计算的位移更精确。此系统已在贵州电网山麻I回220 kV线路安装,目前运行良好。

To avoid the deviation of calculated relative displacement of transmission line from its actual value induced by conductor twisting during the galloping, we designed a conductor galloping monitoring system based on inertial sensor, including hardware design of wireless monitoring sensor, condition monitoring device（CMD）, condition monitoring agent（CMA） etc., and a galloping localization algorithm. In this system, conductor galloping caused by wire self-excited oscillation and wire twisting were considered. We also set up a test platform for simulating conductor galloping, and tested the feasibility of the proposed system. Two methods of galloping monitoring, namely using an acceleration sensor and using an inertial sensor, were compared based on the test results. It is shown that the relative displacement measured and calculated using only acceleration sensors is large, and that using inertial sensors is more accurate. In addition, the monitoring system has successfully been installed and operated on the 220 kV Shan-Ma I transmission lines of Guizhou Power Grid in China.