Abstract：For islanding detection of the three-phase PV grid-connected inverter, the constant and periodic active current disturbance methods are briefly analyzed, and the islanding detection method based on adaptive active current disturbance is proposed for overcoming the insufficiencies of the two methods. According to the amplitude of the voltage at the point of common coupling(PCC) detected after islanding occurred, the resistance value of the load can be obtained. Then the relationship between the minimum active disturbance current which can trigger islanding protection and the amplitude of PCC voltage is deduced. The required active disturbance current can be adaptively added to the inverter according to the amplitude of PCC voltage. As a result, the island can be detected after power failure without non-detection zone. According to IEEE Std.1547.1 and IEEE Std.929—2000, the simulation results show that the proposed algorithm is correct and effective. The experiment results also show that the disturbance on the inverter's output current is more significantly reduced by using the proposed adaptive active current disturbance algorithm, compared to any of constant and periodic disturbance methods.
丁浩, 魏艳君, 漆汉宏, 何宇, 郭小强. 基于自适应有功电流扰动的孤岛检测[J]. 电工技术学报, 2014, 29(8): 294-300.
Ding Hao, Wei Yanjun, Qi Hanhong, He Yu, Guo Xiaoqiang. A Novel Islanding Detection Based on Adaptive Active Current Disturbance. Transactions of China Electrotechnical Society, 2014, 29(8): 294-300.
[1] Estébanez E J, Moreno V M, Pigazo A, et al. Performance evaluation of active islanding-detection algorithms in distributed-generation photovoltaic systems: two inverters case[J]. IEEE Transactions on Industrial Electronics, 2011, 58(4): 1185-1193. [2] 郭小强, 赵清林, 邬伟扬. 光伏并网发电系统孤岛检测技术[J]. 电工技术学报, 2007, 22(4): 157-162. Guo Xiaoqiang, Zhao Qinglin, Wu Weiyang. Islanding detection method for photovoltaic grid-connected power system[J]. Transactions of China Electrotech- nical Society, 2007, 22(4): 157-162. [3] 郭小强, 邬伟扬. 微电网非破坏性无盲区孤岛检测技术[J]. 中国电机工程学报, 2009, 29(25): 7-12. Guo Xiaoqiang, Wu Weiyang. Non-devastating islan- ding detection for microgrids without non detection zone[J]. Proceedings of the CSEE, 2009, 29(25): 7-12. [4] Massoud A M, Ahmed K H, Finney S J, et al. Harmonic distortion-based island detection technique for inverter-based distributed generation[J]. IET Renewable Power Generation, 2009, 3(4): 493-507. [5] Lee S H, Park J W. New islanding detection method for inverter-based distributed generation considering its switching frequency[J]. IEEE Transactions on Industry Applications, 2010, 46(5): 2089-2098. [6] Hanif M, Basu M, Gaughan K. Development of EN50438 compliant wavelet-based islanding detection technique for three-phase static distributed generation systems[J]. IET Renewable Power Generation, 2012, 6(4): 289-301. [7] 张学广, 王瑞, 刘鑫龙, 等. 改进的主动频率偏移孤岛检测算法[J]. 电力系统自动化, 2012, 36(14): 200-209. Zhang Xueguang, Wang Rui, Liu Xinlong, et al. Improved active frequency drift anti-islanding algorithm [J]. Automation of Electric Power Systems, 2012, 36(14): 200-209. [8] 刘芙蓉, 康勇, 段善旭, 等. 主动移频式孤岛检测方法的参数优化[J]. 中国电机工程学报, 2008, 28(1): 95-99. Liu Furong, Kang Yong, Duan Shanxu, et al. Parameter optimization of active frequency drift islanding detection method[J]. Proceedings of the CSEE, 2008, 28(1): 95-99. [9] Liu F, Kang Y, Zhang Y, et al. Improved SMS islan- ding detection method for grid-connected converters [J]. IET Renewable Power Generation, 2010, 4(1): 36-42. [10] 刘芙蓉, 王辉, 康勇, 等. 滑模频率偏移法的孤岛检测盲区分析[J]. 电工技术学报, 2009, 24(2): 178- 182. Liu Furong, Wang Hui, Kang Yong, et al. Non- detection zone of slip-mode frequency shift method[J]. Transactions of China Electrotechnical Society, 2009, 24(2): 178-182. [11] Zeineldin H H, Salama M M A. Impact of load frequency dependence on the NDZ and performance of the SFS islanding detection method[J]. IEEE Transactions on Industrial Electronics, 2011, 58(1): 139-146. [12] Zeineldin H H, Conti S. Sandia frequency shift parameter selection for multi-inverter systems to eliminate non-detection zone[J]. IET Renewable Power Generation, 2011, 5(2): 175-183. [13] Zeineldin H H, Kirtley James L Jr. A simple technique for islanding detection with negligible nondetection zone[J]. IEEE Transactions on Power Delivery, 2009, 24(2): 779-786. [14] 杨秋霞, 赵清林, 郭小强. 三相光伏并网逆变器电流扰动孤岛检测建模及分析[J]. 电力系统自动化, 2012, 36(4): 45-48. Yang Qiuxia, Zhao Qinglin, Guo Xiaoqiang. Modeling and analysis of current-disturbance based islanding detection for three-phase photovoltaic grid-connected inverters[J]. Automation of Electric Power Systems, 2012, 36(4): 45-48. [15] 张纯江, 郭忠南, 孟慧英, 等. 主动电流扰动法在并网发电系统孤岛检测中的应用[J]. 电工技术学报, 2007, 22(7): 176-180. Zhang Chunjiang, Guo Zhongnan, Meng Huiying, et al. Active current disturbing method for islanding detection of grid-connected inverters[J]. Transactions of China Electrotechnical Society, 2007, 22(7): 176- 180. [16] Zeineldin H H. A Q-f droop curve for facilitating islanding detection of inverter-based distributed generation[J]. IEEE Transactions on Power Electronics, 2009, 24(3): 665-673. [17] 杨滔, 王鹿军, 张冲, 等. 基于无功电流—频率正反馈的孤岛检测方法[J]. 电力系统自动化, 2012, 36(14): 193-199. Yang Tao, Wang Lujun, Zhang Chong, et al. A novel islanding detection method based on positive feedback between reactive current and frequency[J]. Automation of Electric Power Systems, 2012, 36(14): 193-199. [18] Teodorescu R, Liserre M, Rodríguez P. Grid converters for photovoltaic and wind power systems [M]. Hoboken: John Wiley & Sons, 2011. [19] Kim Jae Hyung, Kim Jun Gu, Ji Young Hyok, et al. An islanding detection method for a grid-connected system based on the goertzel algorithm[J]. IEEE Transactions on Power Electronics, 2011, 26(4): 1049-1055. [20] 刘方锐, 余蜜, 张宇, 等. 主动移频法在光伏并网逆变器并联运行下的孤岛检测机理研究[J]. 中国电机工程学报, 2009, 29(12): 47-51. Liu Fangrui, Yu Mi, Zhang Yu, et al. Islanding detection evaluation for active frequency drifting methods in multiple photovoltaic grid-connected converters[J]. Proceedings of the CSEE, 2009, 29(12): 47-51. [21] IEEE Standard 929—2000. IEEE recommended practice for utility interface of photovoltaic(PV) systems[S]. New York, USA: The Institute of Electrical and Electronics Engineers, 2000. [22] IEEE Standard 1547.1—2005, IEEE standard confor- mance test procedures for equipment interconnecting distributed resources with electric power systems[S]. New York, USA: The Institute of Electrical and Electronics Engineers, 2005. [23] 廖志凌, 阮新波. 独立光伏发电系统能量管理控制策略[J]. 中国电机工程学报, 2009, 29(21): 46-52. Liao Zhiling, Ruan Xinbo. Energy management control strategy for stand-alone photovoltaic power system[J]. Proceedings of the CSEE, 2009, 29(21): 46-52.
2014, Vol. 29 
