Correction for Voltage Setting Value of Pilot Node in EHV and UHV AC Power Grid During Strong Geomagnetic Storm

被引：0
|
作者：
Xin W. [1 ]
Liu C. [2 ]
Wang Z. [1 ]
Li Y. [1 ]
机构：
[1] Beijing Key Laboratory of High Voltage and EMC, North China Electric Power University, Changping District, Beijing
[2] School of Electrical and Electronic Engineering, North China Electric Power University, Changping District, Beijing
来源：
Dianwang Jishu/Power System Technology | 2023年 / 47卷 / 10期
基金：
中国国家自然科学基金;
关键词：
geomagnetic induced current (GIC); geomagnetic storm; pilot node; voltage control area; voltage correction;
D O I：
10.13335/j.1000-3673.pst.2022.1440
中图分类号：
学科分类号：
摘要：
When the power grid is impacted by geomagnetic storms, the geomagnetic induced current (GIC) in the power grid may saturate the transformers core, increasing the transformer’s reactive power loss and causing the reactive power shortage and the voltage fluctuation of the whole power grid. The extra-high voltage (EHV) and the ultra-high voltage (UHV) power grids are proved to be more vulnerable to such geomagnetic storms due to their special electrical characteristics. The mass and sudden reactive power disturbances may drop the power grid voltage to some unqualified range. In view of this situation, the influence of the reactive power disturbance derived from the geomagnetic storm on the system voltage should be investigated when determining the voltage setting value of the pilot node in the EHV and the UHV power grids. By analyzing the mechanism of the voltage fluctuation during the geomagnetic storm and simulating the response of the power grid to the strong geomagnetic storm, a method is proposed in this paper to correct the voltage setting value and control area during the strong geomagnetic storms. This method is applicable to the voltage control of the EHV and the UHV power grids. It ensures that the voltage at each voltage level of the system is in the qualified range in the case of strong geomagnetic storms. © 2023 Power System Technology Press. All rights reserved.
引用
收藏
页码：4284 / 4290
页数：6
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