Countermeasures on Low Temperature for Switchgear in 1 100 kV UHVAC Substation

LIU Yan; CUI Boyuan; WANG Ninghua; LI Xinyi; GAO Yanfeng; XU Yu

doi:10.13296/j.1001-1609.hva.2019.05.034

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Countermeasures on Low Temperature for Switchgear in 1 100 kV UHVAC Substation

更新时间：2025-04-26

- Countermeasures on Low Temperature for Switchgear in 1 100 kV UHVAC Substation
- High VoltageApparatus Vol. 55, Issue 5, Pages: 220-225(2019)
- 作者机构：
  
  1. 中国电力科学研究院
  2. 国家电网公司
  3. 西安西电开关电气有限公司
  4. 河南平芝高压开关有限公司
  5. 5. 北京宏大日新电机有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.05.034
  CLC： TM643;TM721.2
- Published：2019
- 稿件说明：
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[1]刘焱,崔博源,王宁华,李心一,高延峰,许裕.1100 kV特高压交流变电站开关设备低温应对措施[J].高压电器,2019,55(05):220-225.

LIU Yan, CUI Boyuan, WANG Ninghua, et al. Countermeasures on Low Temperature for Switchgear in 1 100 kV UHVAC Substation[J]. High voltageapparatus, 2019, 55(5): 220-225.
[1]刘焱,崔博源,王宁华,李心一,高延峰,许裕.1100 kV特高压交流变电站开关设备低温应对措施[J].高压电器,2019,55(05):220-225. DOI： 10.13296/j.1001-1609.hva.2019.05.034.

LIU Yan, CUI Boyuan, WANG Ninghua, et al. Countermeasures on Low Temperature for Switchgear in 1 100 kV UHVAC Substation[J]. High voltageapparatus, 2019, 55(5): 220-225. DOI： 10.13296/j.1001-1609.hva.2019.05.034.

摘要

随着特高压交流工程建设的不断开展

越来越多特高压变电站将建设在低温地区。由于特高压开关设备普遍采用SF

气体绝缘

在低温地区使用会存在低温液化问题

降低设备运行稳定性

提升电网运行风险

需采取措施提高设备耐受低温能力。基于设备重要性的考虑

对于1 100 kV GIS

宜采用户内布置方式。对于户外使用的1 100 kV出线套管和分支母线可采用降低气压的方法降低气体液化温度。对于其他电压等级的GIS设备

可在设备外壳加装加热装置

按一定程序对设备气室加热

保证绝缘和灭弧介质SF

的状态稳定。上述低温应对措施均通过了低温试验考核

试验结果将为后续低温特高压站的建设和运行提供指导。

Abstract

As the UHVAC power project develops

more and more UHV submission will build at low temperature area. As the insulating medium of UHVAC switchgear

is likely to liquefy at low temperature

which may reduce the stability of the switchgear and increase the operation risk of the state grid. It is necessary to take measures to improve the cold-resistant ability of the switchgear. Based on the importance of different switchgear

it is appropriate to carry out indoor installation for 1 100 kV GIS. To some outdoor 1 100 kV busing and bus

reduce the SF

pressure can make the liquefaction temperature lower to accommodate the cold environment. To 126 kV GIS and 550 kV

GIS

it is effective to add heating devices around the switchgear

and heat it at certain procedure

which can keep the SF

stable. All the measures have been tested by low temperature test. And the result can provide guidance for the latter construction and operation of UHV submission.

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