The Minimum Energy Soft-Switching Control Strategy for Dynamic Voltage Restorer
Tu Chunming1, Sun Yong1, Guo Qi1, Jiang Fei2, Zhang Li1
1. National Electric Power Conversion Control Engineering Technology Research Center Hunan University Changsha 410082 China; 2. School of Electrical and Information EngineeringChangsha University of Science & Technology Changsha 410004 China
Abstract The minimum energy compensation strategy for dynamic voltage restorer (DVR) can effectively reduce the output of active power and prolong the compensation duration. The grid voltage sag is often accompanied by phase angle jumping, and the traditional minimum energy compensation also causes phase angle jumping in load voltage when grid voltage sag and recovery. Therefore, a minimum energy soft-switching control strategy is proposed, which ensures DVR smooth into and smooth out the minimum energy compensation. Thus, it can solve the problem of load voltage phase angle jumping as well as reducing the output of active power. In addition, taking into account the maximum output capability of DVR, the reference voltage can be dynamically adjusted within the limit level during the compensation. The simulation and experimental results verify the correctness of the theoretical analysis.
Tu Chunming,Sun Yong,Guo Qi等. The Minimum Energy Soft-Switching Control Strategy for Dynamic Voltage Restorer[J]. Transactions of China Electrotechnical Society, 2019, 34(14): 3035-3045.
[1] 徐永海, 兰巧倩, 孔祥雨, 等. 电压暂降特征值统计分析及暂降传播特性[J]. 电工技术学报, 2016, 31(11): 165-175. Xu Yonghai, Lan Qiaoqian, Kong Xiangyu, et al.Statistical analysis of voltage sag characteristics and research on sag propagation property[J]. Transactions of China Electrotechnical Society, 2016, 31(11): 165-175. [2] 赵晓君, 张纯江, 刘明. 串并联补偿式不间断电源四象限360°运行机理分析[J]. 电工技术学报, 2017, 32(8): 237-246. Zhao Xiaojun, Zhang Chunjiang, Liu Ming.Four- quadrant 360 degree operation mechanism analysis of series-parallel compensated uninterruptible power supply[J]. Transactions of China Electrotechnical Society, 2017, 32(8): 237-246. [3] 刘子维, 涂春鸣, 姜飞, 等. 线间多功能DVR的工作机理及仿真分析[J]. 电力系统保护与控制, 2016, 44(21): 41-47. Liu Ziwei, Tu Chunming, Jiang Fei, et al.Mechanism and simulation analysis of multi-functional interline DVR[J]. Power System Protection and Control, 2016, 44(21): 41-47. [4] 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. [5] Farhadi-Kangarlu M, Babaei E, Blaabjerg F.A comprehensive review of dynamic voltage restorers[J]. International Journal of Electrical Power and Energy Systems, 2017, 92: 136-155. [6] 侯世英, 刘早晨, 嵇丽明, 等. 基于最小有功注入策略的级联逆变器动态电压恢复器[J]. 电力自动化设备, 2009, 33(8): 33-36. Hou Shiying, Liu Zaochen, Ji Liming, et al.A novel cascaded H-bridge inverter for dynamic voltage restorer based on minimum active power injection strategy[J]. Electric Power Automation Equipment, 2009, 33(8): 33-36. [7] 党存禄, 严鋆, 张晓英. 动态电压恢复器的时间优化补偿策略研究[J]. 电力系统保护与控制, 2011, 39(5): 11-16. Dang Cunlu, Yan Jun, Zhang Xiaoying.Analysis of time optimal compensation strategy for dynamic voltage restorer[J]. Power System Protection and Control, 2011, 39(5): 11-16. [8] 孙哲, 郭春林, 肖湘宁. 基于负荷电压的DVR补偿策略分析方法及最小能量控制[J]. 中国电机工程学报, 2010, 30(31): 43-49. Sun Zhe, Guo Chunlin, Xiao Xiangning.Analysis method of DVR compensation strategy based on load voltage and minimum energy control[J]. Proceedings of the CSEE, 2010, 30(31): 43-49. [9] 刘海春, 徐立智, 谢少军. 基于周期相位的电压跌落检测方法[J]. 电工技术学报, 2009, 24(9): 186-190. Liu Haichun, Xu Lizhi, Xie Shaojun.Detection method of voltage sag based on period phase[J]. Transactions of China Electrotechnical Society, 2009, 24(9): 186-190. [10] 王同勋, 薛禹胜, Choi S S.动态电压恢复器研究综述[J]. 电力系统自动化, 2007, 31(9): 101-107. Wang Tongxun, Xue Yusheng, Choi S S.Review of dynamic voltage restorer[J]. Automation of Electric Power Systems, 2007, 31(9): 101-107. [11] 张迪, 姜齐荣, 张秀娟. 动态电压恢复器的能量稳定控制[J]. 电网技术, 2006, 30(1): 14-18. Zhang Di, Jiang Qirong, Zhang Xiujuan.Energy steady control for dynamic voltage restorer[J]. Power System Technology, 2006, 30(1): 14-18. [12] Choi S S, Li B H, Vilathgamuwa D M.Dynamic voltage restoration with minimum energy injection[J]. IEEE Transactions on Power Systems, 2000, 15(1): 51-57. [13] 克长宾, 李永丽. 动态电压恢复器的电压跌落综合补偿策略研究[J]. 电力系统保护与控制, 2012, 40(17): 94-99. Ke Changbin, Li Yongli.Study on voltage sags compensation strategy for dynamic voltage restorer[J]. Power System Protection and Control, 2012, 40(17): 94-99. [14] Rauf A M, Khadkika V.An enhanced voltage sag compensation scheme for dynamic voltage restorer[J]. IEEE Transactions on Industrial Electronics, 2015, 62(5): 2683-2692. [15] 王晶, 徐玲玲, 王志琦. 改进型动态电压恢复器的最小能量法[J]. 电力系统保护与控制, 2013, 41(4): 73-78. Wang Jing, Xu Lingling, Wang Zhiqi.Advanced dynamic voltage restorer with minimal energy control[J]. Power System Protection and Control, 2013, 41(4): 73-78. [16] 冯小明, 杨小刚. 动态电压恢复器电压补偿策略的研究[J]. 电力系统自动化, 2004, 28(6): 68-72. Feng Xiaoming, Yang Xiaogang.Analysis of voltage compensation strategies for dynamic voltage restorer[J]. Automation of Electric Power Systems, 2004, 28(6): 68-72. [17] 刘颖英, 肖湘宁, 徐永海. 动态电压恢复器的能量稳定补偿特性分析[J]. 中国电机工程学报, 2010, 30(13): 69-74. Liu Yingying, Xiao Xiangning, Xu Yonghai.Characte- ristics analysis on energy steady compensation for dynamic voltage restorer[J]. Proceedings of the CSEE, 2010, 30(13): 69-74. [18] 张新闻, 同向前. 电容耦合型动态电压恢复器参数建模与控制[J]. 电工技术学报, 2016, 31(6): 212-218. Zhang Xinwen, Tong Xiangqian.Parameter modeling and control of capacitor-coupled dynamic voltage restorer[J]. Transactions of China Electrotechnical Society, 2016, 31(6): 212-218. [19] 瞿硕, 黄纯, 江亚群, 等. DVR电压暂降检测新方法[J]. 电工技术学报, 2013, 28(4): 234-239. Qu Shuo, Huang Chun, Jiang Yaqun, et al.A new detection method of voltage sag applied in DVR[J]. Transactions of China Electrotechnical Society, 2013, 28(4): 234-239. [20] Shuai Zhikang, Yao Peng, Shen Z J, et al.Design considerations of a fault current limiting dynamic voltage restorer (FCL-DVR)[J]. IEEE Transactions on Smart Grid, 2015, 6(1): 14-25. [21] Kanjiya P, Singh B, Chandra A, et al.SRF theory revisited to control self-supported dynamic voltage restorer (DVR) for unbalanced and nonlinear loads[J]. IEEE Transactions on Industry Applications, 2013, 49(5): 2330-2340.
2019, Vol. 34 
