微网稳定运行与模式平滑切换综合控制策略

doi:10.19595/j.cnki.1000-6753.tces.170866

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (39090 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract An integrated control strategy of the stabilization operation and mode smooth transfer for a microgrid based on the conventional droop control method is proposed in this paper. The theoretical analysis and simulation results show that: ①Due to the inclusion of all LCL filter parameters, the designed closed-loop decoupled control system of an LCL-VSC based micro-source has strong high-frequency harmonic suppression ability. ②The new P-f and Q-U stabilization control means based on an adaptive power compensation strategy can inhibit the load perturbations on the voltage and frequency of the islanded microgrid effectively. ③The introduced mode transfer control strategy can achieve the smooth transition of voltage, frequency and power. By the novel phase synchronization control approach, the impact of the traditional frequency adjustment means on the P-f droop control is eliminated using a direct phase adjustment method. Moreover, the voltage phase- locked loop for the main power grid is removed. In addition, the novel off-grid power synchronization control method realizes the power synchronization for microgrids and loads, which stabilizes the voltage and frequency while ensuring the zero-load breaking of the power switch.

Key words： Microgrid droop control adaptive power compensation stabilization control operation mode smooth transfer

Received: 19 June 2017 Published: 03 September 2018

PACS:

TM72

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Xu Sheng
	Cao Wu
	Zhao Jianfeng

Cite this article:

Xu Sheng,Cao Wu,Zhao Jianfeng. An Integrated Control Strategy of the Stabilization Operation and Mode Smooth Transfer for Microgrids[J]. Transactions of China Electrotechnical Society, 2018, 33(16): 3855-3867.

URL:

https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.170866 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I16/3855

[1] 周小平, 陈燕东, 周乐明, 等. 一种微网群架构及其自主协调控制策略[J]. 电工技术学报, 2017, 32(10): 123-134.
Zhou Xiaoping, Chen Yandong, Zhou Leming, et al.A microgrid cluster structure and its autonomous coordination control strategy[J]. Transactions of China Electrotechnical Society, 2017, 32(10): 123-134.
[2] 陈萌, 肖湘宁. 基于分布式内模设计的微电网协调二次控制策略[J]. 电工技术学报, 2017, 32(10): 145-153.
Chen Meng, Xiao Xiangning.Cooperative secondary control strategy of microgrids based on distributed internal model design[J]. Transactions of China Electrotechnical Society, 2017, 32(10): 145-153.
[3] Kasem A A H, Zeineldin H H, Kirtley J L. Microgrid stability characterization subsequent to fault- triggered islanding incidents[J]. IEEE Transactions on Power Delivery, 2012, 27(2): 658-669.
[4] 徐少华, 李建林. 光储微网系统并网/孤岛运行控制策略[J]. 中国电机工程学报, 2013, 33(34): 25-33.
Xu Shaohua, Li Jianlin.Grid-connected/island operation control strategy for photovoltaic/battery micro-grid[J]. Proceedings of the CSEE, 2013, 33(34): 25-33.
[5] Laaksonen H, Saari P, Komulainen R.Voltage and frequency control of inverter based weak LV network microgrid[C]//International Conference on Future Power System, Amsterdam, Netherlands, 2005: 16-18.
[6] 芦思晨, 潘再平. 无储能风电微网系统的下垂控制策略[J]. 电工技术学报, 2016, 31(18): 169-175.
Lu Sichen, Pan Zaiping.Droop control strategy of wind power microgrid system without energy storage device[J]. Transactions of China Electrotechnical Society, 2016, 31(18): 169-175.
[7] 陶勇, 邓焰, 陈桂鹏, 等. 下垂控制逆变器中并网功率控制策略[J]. 电工技术学报, 2016, 31(22): 115-124.
Tao Yong, Deng Yan, Chen Guipeng, et al.Power flow control strategy for droop-controlled inverters[J]. Transactions of China Electrotechnical Society, 2016, 31(22): 115-124.
[8] 石荣亮, 张兴, 徐海珍, 等. 基于虚拟同步发电机的微网运行模式无缝切换控制策略[J]. 电力系统自动化, 2016, 40(10): 16-23.
Shi Rongliang, Zhang Xing, Xu Haizheng, et al.Seamless switching control strategy for microgrid operation modes based on virtual synchronous generator[J]. Automation Electric power system, 2016, 40(10): 16-23.
[9] 张明锐, 杜志超, 王少波, 等. 高压微网运行模式切换控制策略[J]. 电工技术学报, 2014, 29(2): 154-162.
Zhang Mingrui, Du Zhichao, Wang Shaobo, et al.Control strategies of high-voltage microgrid for operation modes switching[J]. Transactions of China Electrotechnical Society, 2014, 29(2): 154-162.
[10] 王晓寰, 张纯江. 分布式发电系统无缝切换控制策略[J]. 电工技术学报, 2012, 27(2): 217-212.
Wang Xiaohuan, Zhang Chunjiang.Study of control strategy for seamless transfer of grid-connected distributed generation systems[J]. Transactions of China Electrotechnical Society, 2012, 27(2): 217-212.
[11] 佟云剑, 沈健, 刘鸿鹏, 等. 光伏发电系统运行模式无缝切换控制策略[J]. 电网技术, 2014, 38(10): 2794-2801.
Tong Yunjian, Shen Jian, Liu Hongpeng, et al.A seamless switching control strategy for operating modes of photovoltaic generation system[J]. Power System Technology, 2014, 38(10):2794-2801.
[12] 姚玮, 陈敏, 牟善科, 等. 基于改进下垂法的微电网逆变器并联控制技术[J]. 电力系统自动化, 2009, 33(6): 77-80.
Yao Wei, Chen Min, Mou Shanke, et al.Paralleling control technique of microgrid inverters based on improved droop method[J]. Automation of Electric Power Systems, 2009, 33(6): 77-80.
[13] 王旭斌, 李鹏, 窦鹏冲, 等. 用于微网孤岛运行的新型功率控制方法[J]. 电力自动化设备, 2014, 34(6): 122-128.
Wang Xubin, Li Peng, Dou Pengchong, et al.Power control method for autonomous microgrid. Electric Power Automation Equipment, 2014, 34(6): 122-128.
[14] Guerrero J M, Matas J, Vicuna L G, et al.Wireless control strategy for parallel operation of distributed generation inverter[J]. IEEE Transactions on Industrial Electronics, 2006, 53(5): 1461-1470.
[15] Xu S, Wang J, Xu J.A current decoupling parallel control strategy of single-phase inverter with voltage and current dual closed-loop feedback[J]. IEEE Transactions on Industrial Electronics, 2013, 60(4): 1306-1317.
[16] 王成山, 肖朝霞, 王守相. 微网中分布式电源逆变器的多环反馈控制策略[J]. 电工技术学报, 2009, 24(2): 100-107.
Wang Chengshan, Xiao Zhaoxia, Wang Shouxiang.Multiple feedback loop control scheme for inverters of the micro source in microgrids[J]. Transactions of China Electrotechnical Society, 2009, 24(2): 100-107.
[17] Chen Yandong, Guerrero J M, Shuai Zhikang, et al.Fast reactive power sharing, circulating current and resonance suppression for parallel inverters using resistive-capacitive output impedance[J]. IEEE Transactions on Power Electronics, 2016, 31(8): 5524-5537.
[18] 范瑞祥, 罗安, 唐杰. 谐振注入式有源滤波器数字化控制系统延时研究[J]. 中国电机工程学报, 2007, 27(13): 105-110.
Fan Ruixiang, Luo An, Tang Jie.The research of the delay based on digital control system of resonance injection active power filter[J]. Proceedings of the CSEE, 2007, 27(13): 105-110.
[19] Majumder R, Ledwich G, Ghosh A, et al.Droop control of converter-interfaced microsources in rural distributed generation[J]. IEEE Transactions on Power Delivery, 2010, 25(4): 2768-2778.
[20] 朱一昕, 卓放, 王丰, 等. 用于微电网无功均衡控制的虚拟阻抗优化方法[J]. 中国电机工程学报, 2016, 36(17): 4552-4663.
Zhu Yixin, Zhuo Fang, Wang Feng, et al.Virtual impedance optimization method for microgrid reactive power sharing control[J]. Proceedings of the CSEE, 2016, 36(17): 4552-4663.
[21] 程军照, 李澍森, 吴在军, 等. 微电网下垂控制中虚拟电抗的功率解耦机理分析[J]. 电力系统自动化, 2012, 36(7): 27-32.
Cheng Junzhao, Li Shusen, Wu Zaijun, et al.Analysis of power decoupling mechanism for droop control with virtual inductance in a microgrid[J]. Automation of Electric Power Systems, 2012, 36(7): 27-32.