An Improved Method of SAPF for Harmonic Compensation and Resonance Damping with Detected Current Including Power Capacitor and Load Current
Zhang Yuxiao1, Dai Ke1, Chen Xinwen1, Zhang Sanhong2, Kang Yong1
1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China; 2. Central China Grid Company Limited Wuhan 430077 China
Abstract：Firstly, this paper presents a hybrid compensation system with shunt active power filter (SAPF) and power capacitors. However, parallel resonance between inductive grid impedance and capacitive impedance will occur in this system. With traditional method, hybrid system is stable when capacitor current is not included in the detected current. But, when capacitor current is included, the detected current will be amplified and resonance frequency will be shifted to higher frequency. Then, an improved method that reversing part of SAPF compensation reference current whose spectra higher than resonance frequency is proposed. Points of common coupling (PCC) voltage is also detected for resonance damping which is helpful to mitigate harmonic distortion. At last, simulation and experiment results are presented to verify the proposed method.
张雨潇, 戴珂, 陈新文, 张三洪, 康勇. 检测电流包含电容电流的SAPF谐波抑制和谐振阻尼新方法[J]. 电工技术学报, 2017, 32(增刊1): 58-67.
Zhang Yuxiao, Dai Ke, Chen Xinwen, Zhang Sanhong, Kang Yong. An Improved Method of SAPF for Harmonic Compensation and Resonance Damping with Detected Current Including Power Capacitor and Load Current. Transactions of China Electrotechnical Society, 2017, 32(增刊1): 58-67.
[1] 陈坚, 康勇. 电力电子学——电力电子变换和控制技术[M]. 3版. 北京: 高等教育出版社, 2011. [2] 张超, 马小平, 张义君, 等. 间谐波环境下并联有源电力滤波器系统设计[J]. 电工技术学报, 2015, 30(20): 118-127. Zhang Chao, Ma Xiaoping, Zhang Yijun, et al. System design of shunt active power filter for inter- harmonics[J]. Transactions of China Electrotechnical Society, 2015, 30(20): 118-127. [3] 帅智康, 罗安, 刘定国, 等. 串联谐振注入式混合型有源电力滤波器及滤波特性分析[J]. 电工技术学报, 2009, 24(5): 125-134. Shuai Zhikang, Luo An, Liu Dingguo, et al. A novel hybrid active power filter with series resonance circuit[J]. Transactions of China Electrotechnical Society, 2009, 24(5): 125-134. [4] Chen X, Dai K, Xu C, et al. Harmonic compensation and resonance damping for APF with selective closed- loop regulation of terminal voltage[J]. IET Power Electronics, 2017, 10(6): 619-629. [5] 戴珂, 段科威, 刘聪, 等. 一种SAPF的谐波补偿和谐振阻尼复合控制策略[J]. 电工技术学报, 2013, 28(9): 86-94. Dai Ke, Duan Kewei, Liu Cong, et al. A hybrid control strategy of harmonic compensation and resonance damping based on SAPF[J]. Transactions of China Electrotechnical Society, 2013, 28(9): 86-94. [6] 吴隆辉, 卓放, 张鹏博, 等. 并联混合型有源电力滤波器稳定性及控制方法[J]. 中国电机工程学报, 2008, 28(18): 54-60. Wu Longhui, Zhuo Fang, Zhang Pengbo, et al. Stability analysis and controller design of hybrid parallel active power filter[J]. Proceedings of the CSEE, 2008, 28(18): 54-60. [7] 吴隆辉, 卓放, 张鹏博, 等. 一种用于配电系统谐振抑制及谐波治理的新型PAPF控制方法[J]. 中国电机工程学报, 2008, 28(27): 70-77. Wu Longhui, Zhuo Fang, Zhang Pengbo, et al. A novel control method of PAPF for resonance damping and harmonics compensation in power system[J]. Proceedings of the CSEE, 2008, 28(27): 70-77. [8] 许胜, 费树岷, 赵剑锋. 基于电容电流反馈的新型HAPF谐振抑制方法[J]. 电力自动化设备, 2016, 36(5): 55-60. Xu Sheng, Fei Shumin, Zhao Jianfeng. Resonance damping based on capacitor current feedback for HAPF[J]. Electric Power Automation Equipment, 2016, 36(5): 55-60. [9] 梅红明, 王一, 刘建政. 采用网侧电流闭环控制的电能质量综合补偿方法[J]. 电网技术, 2013, 37(8): 2368-2375. Mei Hongming, Wang Yi, Liu Jianzheng. A com- prehensive power quality compensation method based on feedback control of grid-side current[J]. Power System Technology, 2013, 37(8): 2368-2375. [10] Akagi H. Control strategy and site selection of a shunt active filter for damping of harmonic propagation in power distribution systems[J]. IEEE Transactions on Power Delivery, 1997, 12(1): 354-363. [11] Ginn H L, Chen G. Flexible active compensator control for variable compensation objectives[J]. IEEE Transactions on Power Electronics, 2008, 23(6): 2931-2941. [12] Borisov K, Ginn H, Chen G. A computationally efficient RDFT-based reference signal generator for active compensators[J]. IEEE Transactions on Power Delivery, 2009, 24(4): 2396-2404. [13] Fujita H, Yamasaki T, Akagi H. A hybrid active filter for damping of harmonic resonance in industrial power systems[J]. IEEE Transactions on Power Electronics, 2000, 15(2): 215-222. [14] Sun X, Zeng J, Chen Z. Site selection strategy of single-frequency tuned R-APF for background harmonic voltage damping in power systems[J]. IEEE Transac- tions on Power Electronics, 2013, 28(1): 135-143. [15] 刘聪. 并联型有源电力滤波器谐波抑制性能优化技术研究[D]. 武汉：华中科技大学, 2014. [16] IEEE Std 519—1992 IEEE recommended practices and requirements for harmonic control in electrical power systems[S]. 1992.
2017, Vol. 32 
