利用无人机对特高压线路上方电场强度实测

随着输电线路电压等级的提高,输电线路周围空间的电磁场强度越来越大,因此对它的空间电磁场分布研究变得越来越重要。针对输电线路上部空间电场强度值实际测试的难点,提出了一种采用小型无人机搭载测试设备进行输电线路上部空间电场强度的实测方法,通过对电磁场测试仪数据和所测试空间的位置数据实时采集,利用iO SD系统将测试数据进行实时合成,把测试数据存储并且传输到地面控制站,从而实现特高压线路电场强度的实测。通过对浙北-福州1 000 kV特高压交流等实际线路的实测分析,同时与Ansoft软件的计算值对比分析,在距离边相导线45 m内,仿真计算与实测值误差在7%以内,说明这种测量方法的有效性,为输电线路空间电磁环境研究具有重要参考意义。

Test research of the electric field intensity in the upper space of UHV AC transmission line using UAV

As the grade of the transmission line voltage increases, the electric magnetic field intensity in the space around the transmission line is getting stronger and stronger. Therefore, the research on electromagnetic field distribution nearby the transmission line is becoming more and more important. Aiming at the difficulty of actually measuring the electric field intensity in the upper space of the transmission line, a new test method is proposed, which adopts unmanned aerial vehicle (UAV) equipped with test equipment to conduct the measurement. Firstly, the real time data of the electric field intensity and position information are tested, and then the iOSD system is used to compose the tested data in real time. The composed test data are stored and transmitted to the ground control station, then the actual measurement of the electric field intensity in the upper space of the transmission line is achieved. The proposed method was verified through the actual test and analysis of the Zhejiang Fuzhou 1 000 kV UHV AC transmission line, the test result was compared with the simulation calculation result using Ansoft software. The result shows that the error between the simulated value and measured value is within 7% when the distance between the test point and the transmission line is within 45 m, which demonstrates the effectiveness of the proposed method. The proposed method has important reference value for the research of spatial electromagnetic environment of transmission lines.