Interference law of magnetic storm in high voltage transmission line and its effect on electromagnetic transient of power system

被引：0
|
作者：
Yang F. [1 ]
Fan L. [1 ]
Gan D. [2 ]
Duan P. [3 ]
机构：
[1] State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing
[2] Electric Power Research Institute, State Grid Sichuan Electric Power Company, Chengdu
[3] Nan'an Power Supply Company, State Grid Chongqing Electric Power Company, Chongqing
来源：
Gaodianya Jishu/High Voltage Engineering | 2016年 / 42卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Coupling interference; Electromagnetic transient; Magnetic storm; Magnetically induced current; Overvoltage; Secondary arc current;
D O I：
10.13336/j.1003-6520.hve.20160310010
中图分类号：
学科分类号：
摘要：
In order to study the coupling interference of magnetic storms on high voltage transmission line and its effect on electromagnetic transient of power system, we established a coupling model of space time-varying magnetic field and transmission line, and analyzed the coupling interference relationship between magnetic storms and power lines in the form of field. In addition, we used different DC power supplies to simulate the electromagnetic transient disturbance from magnetic storm for the 500 kV power transmission system, and calculated its effect on power system in the form of circuit. The results indicate that the coupling current in transmission line is varied uniformly with the magnetic storm changing. When the change rate of magnetic field is 1.6 nT/s, the maximum coupling current of 500 kV single transmission line can be more than 2.4 A. Moreover, the magnetic storm has significant effects on the electromagnetic transient, when the magnetically induced current in the power grid caused by magnetic storm reaches 80 A, the growth of three-phase braking overvoltage is beyond 10%, and the offset of the initial secondary arc current is more than 50 A, which should be paid attention to. © 2016, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：1981 / 1989
页数：8
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