[1]李忠富,孙 鹏,闫亚刚,等.252 kV GIS双隔离断口不停电扩建装置电压分布研究[J].高压电器,2020,56(07):123-127132.[doi:10.13296/j.1001-1609.hva.2020.07.018]
 LI Zhongfu,SUN Peng,YAN Yagang,et al.Research on Voltage Distribution of 252 kV GIS with Double Isolation Break for Uninterrupted Power Supply Expansion[J].High Voltage Apparatus,2020,56(07):123-127132.[doi:10.13296/j.1001-1609.hva.2020.07.018]
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252 kV GIS双隔离断口不停电扩建装置电压分布研究()
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《高压电器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第56卷
期数:
2020年07期
页码:
123-127132
栏目:
研究与分析
出版日期:
2020-07-20

文章信息/Info

Title:
Research on Voltage Distribution of 252 kV GIS with Double Isolation Break for Uninterrupted Power Supply Expansion
作者:
李忠富1 孙 鹏1 闫亚刚1 翟秉璞2 杨卫国1
(1. 平高集团有限公司, 河南 平顶山 467000; 2. 平顶山学院, 河南 平顶山 467000)
Author(s):
LI Zhongfu1 SUN Peng1 YAN Yagang1 ZHAI Bingpu2 YANG Weiguo1
(1. Pinggao Group Co., Ltd., Henan Pingdingshan 467000, China; 2. Pingdingshan University, Henan Pingdingshan 467000, China)
关键词:
GIS 不停电扩建 双隔离断口 仿真计算 电压分布
Keywords:
GIS uninterrupted power supply expansion double isolation breaker simulate calculationvoltage distribution
DOI:
10.13296/j.1001-1609.hva.2020.07.018
摘要:
为了满足GIS扩建对接及现场耐压时不停电所需的高绝缘裕度扩建断口要求,文中介绍了一种252 kV GIS双隔离断口的不停电扩建装置,采用两个隔离断口串联方式构成扩建断口,由于受断口等效电容和对地杂散电容的影响,两个断口分压比并非1:1关系。为校验双隔离断口的绝缘性能,首先分析确定不停电扩建断口最大承受电压;再建立等值电路模型进行理论计算公式推导;然后以Ansys有限元软件为计算工具,以理论公式与仿真计算相结合的研究分析方法,得出断口电压分布情况。结果表明,高压侧隔离断口电压明显高于低压侧。对于三相共箱结构,三相的断口分压比略有不同,中相分压比稍低。根据计算结果,可评估双隔离断口的绝缘性能,进而有针对性的对其结构优化设计。
Abstract:
In order to meet the requirements of expansion break with high insulation margin for uninterrupted power supply during GIS expansion butt joint and on-site withstand voltage, this paper introduces a 252 kV GIS uninterrupted expansion equipment with double isolation breaker, which uses two isolation breakers in series to form expansion breaker. Due to the influence of the equivalent capacitance of the breaker and the stray capacitance to the ground, the voltage ratio of the two breakers is not 1:1. In order to verify the insulation performance of the double isolation breaker, the maximum withstand voltage of the expansion breaker is analyzed first, establishes the equivalent circuit analysis model to derive the theoretical formula, then the Ansys finite element software is used as the calculation tool, and then the research and analysis method combining theoretical formula derivation and simulate calculation is used to obtain the breaker voltage distribution. The results show that, the high-voltage side isolation breaker voltage is significantly higher than the low-voltage side. for the three-phase common box structure,the three-phase breaker voltage division ratio is slightly different,and the middle phase division voltage ratio is slightly lower. According to the calculation results, evaluate the insulation performance of the double isolated breaker, and then optimize the structure.

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备注/Memo

备注/Memo:
收稿日期:2020-03-30; 修回日期:2020-05-04 基金项目:国家电网公司科技项目(SGJSJY00JCJS1800130)。 Project Supported by Science and Technology of SGCC(SGJSJY00JCJS1800130).李忠富(1981—),男,本科,工程师,主要从事高压电器运维技术研究、产品研发、工程设计等方面的工作。
更新日期/Last Update: 2020-07-25