Simplified Modelling of Transient Ground Potential Rise of GIS in Ultra-high-voltage Substations with Hybrid Reactive Power Compensation

被引：1
|
作者：
Liu, Hongshun [1 ]
Zhang, Ziyue [1 ]
Chen, Taiyu [2 ]
Yang, Jingjing [1 ]
Li, Qingquan [1 ]
He, Dongxin [1 ]
机构：
[1] Shandong Univ, Sch Elect Engn, Jinan 250061, Shandong, Peoples R China
[2] State Grid Henan Elect Power Res Inst, Zhengzhou, Peoples R China
来源：
ELECTRIC POWER SYSTEMS RESEARCH | 2021年 / 199卷
基金：
中国国家自然科学基金;
关键词：
Gas-insulated switchgear; Hybrid reactive power compensation; Very fast transient overvoltage; Transient ground potential rise; GAS-INSULATED SUBSTATIONS; VFTO;
D O I：
10.1016/j.epsr.2021.107441
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The application of hybrid reactive power compensation (HRPC) in ultra-high-voltage substations has a non negligible impact on the characteristics of transient ground potential rise (TGPR) in the gas-insulated switchgear (GIS) enclosure. In this paper, according to the principle of series compensation and stepped controlled shunt reactors under a very fast transient overvoltage, a simplified model of an HRPC device is established. Based on the generation mechanism of TGPR and the theory of transmission lines, the equivalent simulation circuit of GIS in a substation is designed under the occurrence of TGPR. Simulation experiments comparing the characteristics of TGPR with and without HRPC are conducted to explore the factors that influence TGPR. This paper proposes specific methods of reducing TGPR, and provides a theoretical basis for the construction of GIS protection devices for ultra-high-voltage substations.
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页数：7
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