Calculation method of power grid GIC based on apparent resistivity data

被引：0
|
作者：
Wang Z. [1 ]
Si Y. [1 ]
Liu L. [2 ]
Zhang C. [3 ]
Yao H. [3 ]
Chen S. [3 ]
机构：
[1] Beijing Key Laboratory of High Voltage and EMC, North China Electric Power University, Beijing
[2] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing
[3] Maintenance Branch of State Grid Zhejiang Electric Power Co., Ltd., Hangzhou
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2021年 / 41卷 / 03期
关键词：
Apparent resistivity; Geoelectric field; Geomagnetically induced current; GMD; Variation function;
D O I：
10.16081/j.epae.202101019
中图分类号：
学科分类号：
摘要：
Rapid and accurate calculation of GIC(Geomagnectically Induced Current) is the basis of using power grid scheduling to prevent GMD(GeoMagnetic Disturbance) disaster. The geoelectric structure model-based GMD geoelectric field calculation method using finite element has the disadvantages of extensive workload and time-consuming, which cannot meet the requirements of disaster prevention. The transmission line is treated with micro elements, the apparent resistivity is estimated by using variation function and sliding weighted average method, and the GMD geoelectric field of micro element is calculated directly by combining the measured data of geomagnetic field at geomagnetic platform. Simulative results show that, compared with the method based on the establishment of large-range earth electrical conductivity model and finite element calculation, the proposed method can omit the complex modeling process of earth, improve the calculation accuracy, shorten the calculation time, and provide a basic algorithm for power grid dispatching to prevent GMD disasters. © 2021, Electric Power Automation Equipment Press. All right reserved.
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页码：151 / 156
页数：5
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