海拔高度对交流线路无线电干扰水平的影响

发布时间：2018-05-07 20:26

本文选题：交流输电线路 + 电晕特性　；参考：《高电压技术》2017年10期

【摘要】：为了研究海拔高度对交流输电线路无线电干扰(RI)水平的影响特性,利用可移动式电晕笼,在不同海拔高度点,如武汉(23 m)、靖远(1 408 m)、西宁(2 261 m)、共和(2 943 m)以及羊八井(4 300 m),分别进行了不同分裂型式导线的无线电干扰激发函数测量,获得了不同子导线半径、不同导线分裂数在不同海拔高度点对无线电干扰激发函数的影响规律;通过实测数据拟合,提出了新的无线电干扰海拔高度修正系数。结果表明:当海拔高度3 200m时,实测的无线电干扰校准值介于BPA校准和美国西屋公司校准计算值之间;当海拔高度3 200 m时,实测校准值均小于上述计算式的校准值;所提出的无线电干扰海拔高度修正系数适用于海拔高度4 300 m的不同海拔高度修正。论文研究结果可为我国的高海拔输电线路建设提供一定的技术支持。
[Abstract]:In order to study the influence of altitude on radio interference (RI) level of AC transmission line, mobile corona cage is used at different altitude. For example, Wuhan 23 mm, Jingyuan 1 408 m, Xining 2 261 mm, Gonghou 2 943 m) and Yangbajing 4 300 mm, the radio interference excitation function of different split type conductors has been measured, and the radius of different sub-conductors has been obtained. The influence of different conductors' splitting numbers on radio interference excitation function at different altitude points is studied, and a new radio interference altitude correction coefficient is proposed by fitting the measured data. The results show that when altitude is 3 200 m, the measured radio interference calibration value is between BPA calibration and Westinghouse calibration calculation value, and when altitude is 3 200 m, the measured calibration value is less than the calibration value of the above formula. The proposed radio interference correction coefficient is suitable for different altitude correction at 4 300 m above sea level. The research results can provide some technical support for the construction of high-altitude transmission lines in China.
【作者单位】：电网环境保护国家重点实验室(中国电力科学研究院);武汉大学电气工程学院;国网青海省电力公司电力科学研究院;
【基金】：国家电网公司科技项目(SGTYHT/14 JS 188)~~
【分类号】：TM75

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