Abstract：Highly sensitive electrical equipment represented by AC contactor is applied extensively in power system. Serious consequences and associated losses would be caused subsequently by contactor false tripping derived from voltage sag triggered by thunder-strike and short circuit. In this context, this paper discusses the energy conversion of the electromagnetic systems as the foundation of proposing a voltage sag protection topology based on seamless switching for AC contactor. The reverse external voltage turn-off characteristic of thyristor is utilized in the proposed topology. Therefore the exciting current is consecutive, enough energy could be obtained to maintain the closure of contactor during the switching procedure between the main control circuit and the alternate control circuit under voltage sags. Additionally, the control method of switching process are addressed. Detailed simulations and experiments have been carried out to validate the correctness and effectiveness of the proposed topology, as a theoretical and practical reference for uninterrupted operation of highly sensitive electrical equipment during consecutive industrial manufacturing.
杨东升, 马占超, 高筱婷, 王智良, 曾俊彦. 交流接触器晃电保护无隙切换拓扑结构研究[J]. 电工技术学报, 2018, 33(11): 2431-2438.
Yang Dongsheng, Ma Zhanchao. Research onVoltage Sag Protection Topology Based on Seamless Switching for AC Contactors. Transactions of China Electrotechnical Society, 2018, 33(11): 2431-2438.
[1] 陈众励, 许维胜. 电压中断与电压暂降的成因及其防治[J]. 电工技术学报, 2015, 30(增刊1): 518-520. Chen Zhongli, Xu Weisheng.Reason and prevention of voltage interruption and voltage sags[J]. Transactions of China Electrotechnical Society, 2015, 30(S1): 518-520. [2] 王野, 姜万东, 迟玉国. 防晃电智能控制模块设计与分析[J]. 电气技术, 2015, 16(9): 43-46, 94. Wang Ye, Jiang Wandong, Chi Yuguo.Implementation analysis of anti-electricity shaking module with intelligent control system[J]. Electrical Engineering, 2015, 16(9): 43-46, 94. [3] GB/T 30137—2013, 电能质量电压暂降与短时中断[S]B/T 30137—2013, 电能质量电压暂降与短时中断[S]. 北京: 中国标准出版社, 2014. [4] Jothibasu S, Mishra M.An improved direct ac-ac converter for voltage sag mitigation[J]. IEEE Transactions on Industrial Electronics, 2015, 62(1): 21-29. [5] Cebrian J, Milanovic J, Kagan N.Probabilistic assessment of financial losses in distribution network due to fault-induced process interruptions considering process immunity time[J]. IEEE Transactions on Power Delivery, 2015, 30(3): 1478-1486. [6] 贾清泉,艾丽,董海艳, 等. 考虑不确定性的电压暂降不兼容度和影响度评价指标及方法[J]. 电工技术学报, 2017, 32(1): 48-57. JiaQingquan, Ai Li, Dong Haiyan, et al. Uncertainty description and assessment of incompatibility & influence index for voltage sags[J]. Transactions of China Electrotechnical Society, 2017, 32(1): 48-57. [7] 金楠, 康东祎, 崔光照. 基于直接AC/AC变换的动态电压恢复器研究[J]. 电工技术学报, 2015, 30(11): 71-77. Jin Nan, Kang Dongyi, Cui Guangzhao.Research on dynamic voltage restorer based on direct AC/AC power conversion[J]. Transactions of China Electrotechnical Society, 2015, 30(11): 71-77. [8] 李正明, 李文文, 张国松, 等. 一种补偿电网电压凹陷的DVR优化补偿策略[J]. 电力系统保护与控制, 2016, 44(17): 139-145. Li Zhengming, Li Wenwen, Zhang Guosong, et al.An optimized compensation strategy of DVR for grid voltage sag compensation[J]. Power System Protection and Control, 2016, 44(17): 139-145. [9] 陈国栋, 朱淼, 蔡旭. 功率因数与电压跌落深度双影响因子下中压H桥链式动态电压恢复器的滤波器优化设计[J]. 电工技术学报, 2016, 31(9): 75-84. Chen Guodong, Zhu Miao, Cai Xu.Optimization of filter based on power factor and voltage sag depth for medium-voltage cascaded H-Bridge dynamic voltage restorer[J]. Transactions of China Electrotechnical Society, 2016, 31(9): 75-84. [10] Rauf A, Khadkikar V.An enhanced voltage sag compensation scheme for dynamic voltage restorer[J]. IEEE Transactions on Industrial Electronics, 2015, 62(5): 2683-2692. [11] 苗世华, 李杰, 宗洪良. 工业企业电源快速切换装置在低压母线的应用[J]. 电力系统保护与控制, 2011, 39(6): 76-79. Miao Shihua, Li Jie, Zong Hongliang.Application of industrial enterprises power quick-switching device in the low-voltage bus[J]. Power System Protection and Control, 2011, 39(6): 76-79. [12] 杨建翔, 王英莉. 抗晃电的快速保护方案研究[J]. 电力系统保护与控制, 2015, 43(17): 87-92. Yang Jianxiang, Wang Yingli.Rapid protection scheme during voltage sag[J]. Power System Protection and Control, 2015, 43(17): 87-92. [13] 汤龙飞, 许志红. 交流接触器新型智能抗电压跌落控制模块的设计[J]. 中国电机工程学报, 2012, 32(27): 95-103. Tang Longfei, Xu Zhihong.Design of a new intelligent anti-voltage sag control module for AC contactors[J]. Proceedings of CSEE, 2012, 32(27): 95-103. [14] 周娟, 陈映, 唐慧英, 等. 基于脉冲调整的四桥臂逆变器死区补偿策略[J]. 电工技术学报, 2016, 31(3): 16-24. Zhou Juan, Chen Ying, Tang Huiying, et al.Dead-time compensation strategy for four-leg inverter based on pulse-tuning[J]. Transactions of China Electrotechnical Society, 2016, 31(3): 16-24. [15] 何晓燕, 许志红. 交流接触器虚拟样机设计技术[J]. 电工技术学报, 2016, 31(14): 148-155. He Xiaoyan, Xu Zhihong.Virtual prototyping technology of AC contactor[J]. Transactions of China Electrotechnical Society, 2016, 31(14): 148-155. [16] 周万迪, 魏晓光, 高冲, 等. 基于晶闸管的混合型无弧高压直流断路器[J]. 中国电机工程学报, 2014, 34(18): 2990-2996. Zhou Wandi, Wei Xiaoguang, Gao Chong, et al.Thyristor based hybrid arc-less high voltage direct current circuit breaker[J]. Proceedings of the CSEE, 2014, 34(18): 2990-2996. [17] 张静, 汤广福, 温家良, 等. 高压大功率晶闸管反向恢复特性动态模型[J]. 电力电子技术, 2015, 49(4): 50-53. Zhang Jing, Tang Guangfu, Wen Jialiang, et al.Dynamic modelling of the turn off performance of high voltage power thyristor[J]. Power Electronics, 2015, 49(4): 50-53. [18] 徐永海, 兰巧倩, 洪旺松. 交流接触器对电压暂降敏感度的试验研究[J]. 电工技术学报, 2015, 30(21): 136-146. Xu Yonghai, Lan Qiaoqian, Hong Wangsong.Experimental research on AC contactor sensitivity during voltage sags[J]. Transactions of China Electrotechnical Society, 2015, 30(21): 136-146. [19] 中国电器工业协会.GB14048.4—2010低压开关设备和控制设备第4-1部分: 接触器和电动机起动器[S]. 北京: 中国标准出版社, 2011.
2018, Vol. 33 
