Reference Sinusoidal Signal Detection Method of Gird Synchronization without Phase-Locked Loop Based on Hilbert Transform and Pre-Set the Rotation Frequency
Pan Hongbin, Long Haihong, Zhu Maokun, Zhu Hongzhang, Ou Sicheng
College of Imformation Engineering Xiangtan University Xiangtan 411105 China;
Abstract：In the process of grid-connected new energy generation system, it is important to detect the reference sinusoidal signal of grid synchronization, especially under power grid imbalance, distortion, frequency fluctuation, frequency offset and other complex grid conditions. A method without phase-locked loop that extracts reference sinusoidal signal of gird synchronization is proposed in this paper based on the Hilbert transform and pre-set rotation frequency. First, This method transforms the positive and negative frequency components at specific time with presetting synchronous rotation frequency, eliminates the positive sequence, fundamental negative sequence and negative sequence harmonic components using the amplitude and phase characteristics of Hilbert transform and certain operations. The proposed method can accurately extract the reference sinusoidal signal of the grid synchronization under complex grid conditions, which is verified through theory and experiment.
盘宏斌, 龙海鸿, 朱茂琨, 朱鸿章, 欧思程. 基于Hilbert变换和预设旋转频率的无锁相环电网同步基准正弦信号检测方法[J]. 电工技术学报, 2018, 33(10): 2345-2353.
Pan Hongbin, Long Haihong, Zhu Maokun, Zhu Hongzhang, Ou Sicheng. Reference Sinusoidal Signal Detection Method of Gird Synchronization without Phase-Locked Loop Based on Hilbert Transform and Pre-Set the Rotation Frequency. Transactions of China Electrotechnical Society, 2018, 33(10): 2345-2353.
[1] Golestan S, Vidal A, Yepes A G, et al.A true open- loop synchronization technique[J]. IEEE Transactions on Industrial Informatics, 2016, 12(3): 1093-1103. [2] 杨艺云, 廖波, 周林, 等. 并网逆变器无锁相环基准正弦的实现方法[J]. 电网技术, 2013, 37(7): 2000-2005. Yang Yiyun, Liao Bo, Zhou Lin, et al.An approach to obtain reference sinusoidal signal for grid- connected inverter without phase-locked loop[J]. Power System Technology, 2013, 37(7): 2000-2005. [3] Blaabjerg F, Teodorescu R, Liserre M, et al.Overview of control and grid synchronization for distributed power generation systems[J]. IEEE Transactions on Industrial Electronics, 2006, 53(5): 1398-1409. [4] 赵红雁, 李艳, 杜吉飞, 等. 三相并网系统的一种快速相位检测方法[J]. 电工技术学报, 2016, 31(2): 67-75. Zhao Hongyan, Li Yan, Du Jifei, et al.A fast phase detection method applied in three-phase grid connected system[J]. Transactions of China Electro- technical Society, 2016, 31(2): 67-75. [5] Kaura V, Blasko V.Operation of a phase locked loop system under distorted utility conditions[J]. IEEE Transactions on Industry Applications, 2002, 33(1): 58-63. [6] 杜雄, 郭宏达, 孙鹏菊, 等. 基于ANF-PLL的电网电压基波正负序分离方法[J]. 中国电机工程学报, 2013, 33(27): 28-35. Du Xiong, Guo Hongda, Sun Pengju, et al.A positive and negative sequence component separation method for grid voltage based on the phase locked loop with an adaptive notch filter[J]. Proceedings of the CSEE, 2013, 33(27): 28-35. [7] Rodriguez P, Teodorescu R, Candela I, et al.New positive-sequence voltage detector for grid synchro- nization of power converters under faulty grid conditions[C]//IEEE Power Electronics Specialists Conference, Jeju, South Korea, 2006: 1-7. [8] 涂娟, 汤宁平. 基于改进型DSOGI-PLL的电网电压同步信号检测[J]. 中国电机工程学报, 2016, 36(9): 2350-2356. Tu Juan, Tang Ningping.Synchronizing signal detection for grid voltage based on modified DSOGI- PLL[J]. Proceedings of the CSEE, 2016, 36(9): 2350-2356. [9] Rodriguez P, Luna A, Candela I, et al.Multiresonant frequency-locked loop for grid synchronization of power converters under distorted grid conditions[J]. IEEE Transactions on Industrial Electronics, 2011, 58(1): 127-138. [10] 杜雄, 刘延东, 王国宁, 等. 采用正弦幅值积分器的单同步参考坐标系同步信号检测方法[J]. 电工技术学报, 2015, 30(8): 167-175. Du Xiong, Liu Yandong, Wang Guoning, et al.Synchronization signal detection method in synchronous reference frame through sinusoidal amplitude integrators[J]. Transactions of China Electrotechnical Society, 2015, 30(8): 167-175. [11] 刘扬, 谭国俊. 基于改进型自适应锁相环的特定次谐波补偿算法在APF中的应用[J]. 电工技术学报, 2013, 28(5): 259-264. Liu Yang, Tan Guojun.Specific harmonic com- pensation algorithm based on self-adaptive reinforced phase lock loop for APF[J]. Transactions of China Electrotechnical Society, 2013, 28(5): 259-264. [12] 李珊瑚, 杜雄, 王莉萍, 等. 解耦多同步参考坐标系电网电压同步信号检测方法[J]. 电工技术学报, 2011, 26(12): 183-189. Li Shanhu, Du Xiong, Wang Liping.A grid voltage synchronization method based on decoupled multiple synchronous reference frame[J]. Transactions of China Electrotechnical Society, 2011, 26(12): 183-189. [13] 陈明亮, 肖飞, 刘勇, 等. 一种正负序分离锁相环及其在并网型风力发电系统中的应用[J]. 电工技术学报, 2013, 28(8): 181-186. Chen Mingliang, Xiao Fei, Liu Yong, et al.A positive and negative-sequence detection PLL and its application in wind power generation system[J]. Transactions of China Electrotechnical Society, 2013, 28(8): 181-186. [14] 杜雄, 王国宁, 孙鹏菊, 等. 两相静止坐标系下消除不对称和谐波影响的同步信号提取方法[J]. 电工技术学报, 2015, 30(4): 249-256. Du Xiong, Wang Guoning, Sun Pengju, et al.Synchronization signal extraction method in two- phase stationary reference frame for eliminating imbalance and harmonic effects[J]. Transactions of China Electrotechnical Society, 2015, 30(4): 249-256. [15] Freijedo F D, Doval-Gandoy J, Óscar LÓpez, et al.A generic open-loop algorithm for three-phase grid voltage/current synchronization with particular reference to phase, frequency, and amplitude estimation[J]. IEEE Transactions on Power Electronics, 2009, 24(1): 94-107. [16] 熊连松, 卓放, 刘小康, 等. 不对称电网同步相位的快速开环捕获方法研究[J]. 中国电机工程学报, 2015, 35(22): 5682-5691. Xiong Liansong, Zhuo Fang, Liu Xiaokang, et al.Research on fast phase synchronization scheme for three-phase unbalanced power system[J]. Proceedings of the CSEE, 2015, 35(22): 5682-5691. [17] Legarreta A E, Figueroa J H.Power quality monitor with a flicker meter based on Hilbert transform[C]// IEEE Electrical Power Quality and Utilisation Conference, Lisbon, Portugal, 2011: 1-5. [18] Li Hongsheng, Li Zhenqin, Chen Wenwu, et al.Implementation of Hilbert-Huang transform (HHT) based on DSP[C]//IEEE Signal Processing Con- ference, Beijing, China, 2004: 499-502. [19] Zhu Zheng, Wang Yilin, Cai Ping.Real-time implementation of vector Hilbert-Huang transform[C]// IEEE Intelligent Networks and Intelligent Systems Conference, Shenyang, China, 2010: 213-216. [20] Huang Deming, Li Wenjun, Zheng Yongjun.A vortex flowmeter based on multiprocessor technique[C]// IEEE Networking and Information Technology Conference, Manila, Philippines, 2010: 322-325. [21] 喻敏, 王斌, 王文波, 等. 基于SST的间谐波检测方法[J]. 中国电机工程学报, 2016, 36(11): 2944-2951. Yu Min, Wang Bin, Wang Wenbo, et al.An inter-harmonic detection method based on synchro- squeezing wavelet transform[J]. Proceedings of the CSEE, 2016, 36(11): 2944-2951. [22] 宋海军, 黄传金, 刘宏超, 等. 基于改进LMD的电能质量扰动检测新方法[J]. 中国电机工程学报, 2014, 34(10): 1700-1708. Song Haijun, Huang Chuanjin, Liu Hongchao, et al.A new power quality disturbance detection method based on the improved LMD[J]. Proceedings of the CSEE, 2014, 34(10): 1700-1708. [23] 刘志刚, 李文帆, 孙婉璐. Hilbert-Huang变换及其在电力系统中的应用[J]. 电力自动化设备, 2012, 32(4): 109-116. Liu Zhigang, Li Wenfan, Sun Wanlu.Hilbert-Huang transform and its applications in power system[J]. Electric Power Automation Equipment, 2012, 32(4): 109-116.
2018, Vol. 33 
