班连庚;郑彬;周佩朋;韩彬;项祖涛;孙岗;王晓彤;王东阳;刘北阳;滕文涛;刘英志;

• 1:电网安全与节能国家重点实验室(中国电力科学研究院有限公司)
• 2:国家电网有限公司

摘要(Abstract)：

变压器空载合闸励磁涌流注入电网可能引起严重的电压暂降或谐波过电压问题,对交直流系统及设备的正常安全运行造成不利影响,目前国内多次出现超、特高压主变空载合闸励磁涌流引起电网异常的问题。选相合闸技术已在国内电厂升压变、高压直流系统换流变等场景有实际应用,但在特高压交流系统中尚属空白。针对国内在晋北特高压交流变电站示范开展的特高压主变选相合闸技术应用实践,介绍了基于剩磁测算的特高压变压器选相合闸技术原理,并结合晋北站特高压交流工程调试系统工况开展建模仿真,比较分析了不同措施抑制变压器励磁涌流的效果,并结合现场实测结果进行验证分析。结果表明,特高压主变断路器采用选相合闸技术可以有效抑制合空变励磁涌流,推广应用价值良好。研究成果可为特高压交流工程设计、设备选型提供参考。

关键词(KeyWords)： 特高压交流变压器;励磁涌流;剩磁测算;选相合闸;工程应用

Abstract:

Keywords:

基金项目(Foundation): 国家电网公司科技项目:特高压变压器选相投切技术、控制装置及系统应用研究~~

作者(Author): 班连庚;郑彬;周佩朋;韩彬;项祖涛;孙岗;王晓彤;王东阳;刘北阳;滕文涛;刘英志;

Email:

DOI: 10.13335/j.1000-3673.pst.2017.1998

参考文献(References)：

• [1]郑彬,班连庚,周佩朋,等.合闸750 k V空载变压器引起的系统电压暂降现场实测与计算分析[J].电网技术,2012,36(9):203-208.Zheng Bin,Ban Liangeng,Zhou Peipeng,et al.Analysis on measured and calculated results of system voltage sag caused by energizing750 k V no-load transformer[J].Power System Technology,2012,36(9):203-208(in Chinese).
• [2]周佩朋,项祖涛,杜宁,等.西北750 k V电网合空变导致青藏直流闭锁故障分析[J].电力系统自动化,2013,37(10):129-133.Zhou Peipeng,Xiang Zutao,Du Ning,et al.Analysis on blocking of Qinghai-Tibet HVDC system caused by transformer energization in Northwest 750 k V grid of China[J].Automation of Electric Power Systems,2013,37(10):129-133(in Chinese).
• [3]种芝艺,粟小华,刘宝宏.西北电网主变充电引起青藏直流闭锁的原因分析及对策[J].电力建设,2013,34(3):88-91.Zhong Zhiyi,Su Xiaohua,Liu Baohong.Analysis and countermeasures of Qinghai-Tibet DC blocking caused by main transformer charging in northwest[J].Electric Power Construction,2013,34(3):88-91(in Chinese).
• [4]周佩朋,项祖涛.川藏联网工程合空变引起谐波及过电压问题仿真与试验研究[R].北京:中国电力科学研究院,2014.
• [5]韩彬,王东阳,任大伟,等.皖电东送特高压交流同塔双回输电工程系统调试总结[R].北京:中国电力科学研究院,2013.
• [6]郑彬,滕文涛,项祖涛,等.基于变压器电流直流分量衰减特性的励磁涌流识别方法[J].电网技术,2017,41(6):2020-2026.Zheng Bin,Teng Wentao,Xiang Zutao,et al.A novel inrush current distinguishing scheme based on DC component decaying characteristics of transformer current[J].Power System Technology,2017,41(6):2020-2026(in Chinese).
• [7]李琥,周海洋,施围.断路器合闸电阻对变压器励磁涌流的影响[J].高压电器,2003,39(1):16-21.Li Hu,Zhou Haiyang,Shi Wei,Effect of closing resistor inside circuit breaker on inrush current of transformer[J].High Voltage Apparatus,2003,39(1):16-21(in Chinese).
• [8]李伟,黄金,方春恩,等.基于相控开关技术的空载变压器励磁涌流抑制研究[J].高压电器,2010,46(5):9-13.Li Wei,Huang Jin,Fang Chun’en,et al.Research on elimination of no-load power transformer inrush current based on controlled switching[J].High Voltage Apparatus,2010,46(5):9-13(in Chinese).
• [9]丁富华,邹积岩,方春恩,等.相控真空断路器投切空载变压器的应用研究[J].中国电机工程学报,2005,25(3):89-93.Ding Fuhua,Zou Jiyan,Fanf Chun’en,et al.Investigation on switching idle power transformer with phasing vacuum circuit breakers[J].Proceedings of the CSEE,2005,25(3):89-93(in Chinese).
• [10]Brunke J H,Frohlich K J.Elimination of transformer inrush currents by controlled switching-part I:theoretical considerations[J].IEEE Transaction on Power Delivery,2001,16(2):276-280.
• [11]颜湘莲,李志兵,王承玉,等.特高压输电工程中选相断路器开合电容器组特性分析[J].电网技术,2014,38(7):1772-1778.Yan Xianglian,Li Zhibing,Wang Chengyu,et al.Analysis on characteristics of phase-selectable circuit breaker for switching capacitor banks in UHV power transmission project[J].Power System Technology,2014,38(7):1772-1778(in Chinese).
• [12]郝治国,张保会,褚云龙,等.变压器空载合闸励磁涌流抑制技术研究[J].高压电器,2005,41(2):81-84.Hao Zhiguo,Zhang Baohui,Chu Yunlong,et al.Study on inrush current restraining technology when energizing no-load transformer[J].High Voltage Apparatus,2005,41(2):81-84(in Chinese).
• [13]Brunke J H,Frohlich K J.Elimination of transformer inrush currents by controlled switching-Part II:application and performance considerations[J].IEEE Transaction on Power Delivery,2001,16(2):281-285.
• [14]丁富华.真空开关的选相控制及其应用研究[D].大连:大连理工大学,2006.
• [15]兀鹏越,余信,李毅,等.变压器励磁涌流抑制器工程应用及探讨[J].电力自动化设备,2012,32(6):145-149.Wu Pengyue,Yu Xin,Li Yi,et al.Engineering application of transformer excitation inrush suppressor[J].Electric Power Automation Equipment,2012,32(6):145-149(in Chinese).
• [16]付丰年,沈恒毅,吕杰,等.关于核电主变励磁涌流的分析及抑制措施研究[J].高压电器,2015,51(6):86-89.Fu Fengnian,Shen Hengyi,LüJie,et al.Analysis on inrush current and inhibition methods of main transformer in nuclear power plant[J].High Voltage Apparatus,2015,51(6):86-89(in Chinese).
• [17]王晓彤,张媛媛.蒙西—天津南特高压交流工程系统调试过电压及电磁暂态研究[R].北京:中国电力科学研究院,2016.
• [18]GB/Z 24842—2009,1000 k V特高压交流输变电工程过电压和绝缘配合[S].
• [19]GB/Z 24838—2009,1100 k V高压交流断路器技术规范[S].
• [20]GB/T 50064—2012,交流电气装置的过电压保护和绝缘配合设计规范[S].2014.
• [21]韩彬,王东阳,沈海滨,等.蒙西—天津南特高压交流工程系统调试总结[R].北京:中国电力科学研究院,2016.