孤岛下基于负序虚拟导纳的微网不平衡控制策略

doi:10.19595/j.cnki.1000-6753.tces.L80755

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (8523 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The parallel negative equivalent circuit of the voltage control mode converters and the current control mode converter are analyzed. It is pointed out that the method using voltage control mode converter with negative sequence virtual impedance to compensate the negative sequence current will introduce the negative sequence voltage at the point of common coupling. Based on the traditional control method of current control mode converter in microgrid, a method of utilizing current control mode converter with negative sequence virtual admittance is proposed. The negative sequence current reference which is obtained by multiplying the negative sequence virtual admittance and the negative sequence voltage of the AC bus is added to the positive current reference to control the output current of the converter. A method for calculating the negative sequence virtual admittance based on voltage unbalance factor is proposed, which reduces the voltage unbalance factor at the point of common coupling. Compared with the existing calculation method using the proportional integral controller, it is shown that the proposed calculation method is more in line with the “plug and play” rule of the microgrid.

Key words： AC microgrid unbalanced load negative sequence compensation power quality

Received: 10 July 2018 Published: 13 August 2019

PACS:

TM46

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Wu Xuezhi
	Liu Haichen
	Tang Fen
	Liu Jingdou
	Wu Liangliang

Cite this article:

Wu Xuezhi,Liu Haichen,Tang Fen等. Negative Sequence Virtual Admittance Based Unbalance Control Strategy in Islanded Mode Microgrid[J]. Transactions of China Electrotechnical Society, 2019, 34(15): 3222-3230.

URL:

https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L80755 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I15/3222

[1] 陈汝昌,陈飞,张帆, 等.新能源电网中微电源并网控制策略研究[J]. 电力系统保护与控制,2015,43(12): 55-60.
Chen Ruchang, Chen Fei, Zhang Fan, et al.Control strategies for grid-connected microsource in new energy power system[J]. Power System Protection and Control, 2015, 43(12): 55-60.
[2] 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.
[3] 李建林, 马会萌, 惠东. 储能技术融合分布式可再生能源的现状及发展趋势[J]. 电工技术学报, 2016, 31(14): 1-10.
Li Jianlin, Ma Huimeng, Hui Dong.Present development condition and trends of energy storage technology in the integration of distributed renewable energy[J]. Transactions of China Electrotechnical Society, 2016, 31(14): 1-10.
[4] 汪宝,匡洪海,郑丽平,等.分布式发电与配电网的协调发展与技术展望[J]. 电气技术,2017,18(3): 5-9.
Wang Bao, KuangHonghai, ZhengLiping, et al. Prospect over the techniques and coordinated development of distributed generation and distribution network[J]. Electrical Engineering, 2017, 18(3): 5-9.
[5] 杜进,王睿驰,王志鹏,等.并联型单开关管光伏组件优化器的研究与设计[J].电工技术学报,2017,32(24): 184-192.
Du Jin, Wang Ruichi, Wang Zhipeng, et al.Design and analysis of a parallel single-switch panel-intergrated PV optimizer[J]. Transactions of China Electrotechnical Society, 2017, 32(24): 184-192.
[6] 茆美琴,金鹏,张榴晨,等.工业用光伏微网运行策略优化与经济性分析[J]. 电工技术学报,2014,29(2): 55-63.
Mao Meiqin, Jin Peng, Zhang Liuchen, et al.Optimization of operation strategy and economic analysis of PV microgrids for industries[J]. Transactions of China Electrotechnical Society, 2014, 29(2): 55-63.
[7] PoT C,ChienA C,TzungLL. A cooperative imbalance compensation method for distributed-generation interface converters[J].IEEE Transactions on Industrial Applications,2009,45(2): 805-815.
[8] 杨同光,桂卫华.电网不平衡情况下并网逆变器控制策略综述[J]. 电工技术学报,2015,30(14): 241-246.
Yang Tongguang, GuiWeihua. An overview on control strategies of grid-connected inverter under unbalanced voltage conditions[J]. Transactions of China Electrotechnical Society, 2015, 30(14): 241-246.
[9] IEEE Std 1159—2009. IEEE recommended practice for monitoring electric power quality Std 1159—2009. IEEE recommended practice for monitoring electric power quality[S]. 2009.
[10] GarciaC A,PinzonA M,FeliuB V,et al. Application of a repetitive controller for a three-phase active power filter[J].IEEE Transactions on Power Electronics,2007,22(1): 237-246.
[11] Singh B,Solanki J.An implementation of an adaptive control algorithm for a three-phase shunt active filter[J].IEEE Transactions on Industrial Electronics,2009,56(8): 2811-2820.
[12] LuoAn,PengShuangjian, Wu Chuanping,et al. Power electronic hybrid system for load balancing compensation and frequency-selective harmonic suppression[J].IEEE Transactions on Industrial Electronics,2012,59(2): 723-732.
[13] 屈克庆,李文旗,赵晋斌,等.孤岛微网不平衡负荷下控制策略[J]. 电力系统保护与控制,2017,45(11): 8-14.
QuKeqing, Li Wenqi, Zhao Jinbin, et al. Island microgrid control strategy under unbalanced loads[J]. Power System Protection and Control, 2017, 45(11): 8-14.
[14] 马添翼,金新民.基于自适应负序电流虚拟阻抗的微电网不平衡控制策略[J]. 电力系统自动化,2014,38(12): 12-18.
Ma Tianyi, Jin Xinmin.An unbalanced control strategy for microgrid based on adaptive negative sequence current virtual impedance[J]. Automation of Electric Power System, 2014, 38(12): 12-18.
[15] 杨向真,苏建徽, 丁明,等.微电网孤岛运行时的频率控制策略[J]. 电网技术,2010,34(1): 164-168.
Yang Xiangzhen, Su Jianhui, Ding Ming, et al.Research on frequency control for micrigrid in island operation[J]. Power System Technology, 2010, 34(1): 164-168.
[16] 林燎源, 林钊, 刘伟, 等. 基于阻性下垂的逆变器无线并联均流控制[J]. 电工技术学报, 2016, 31(8): 43-50.
Lin Liaoyuan, Lin Zhao, Liu Wei, et al.Wireless current sharing scheme for parallel operation of inverters using resistive output impedance[J]. Transactions of China Electrotechnical Society, 2016, 31(8): 43-50.
[17] Wu D, Tang F,Vasquez J C,et al.Control and analysis of droop and reverse droop controllers for distributed generations[C]// 11th International Multi-Conference on Systems,Signals&Devices, Barcelona,2014: 1-5.
[18] Vasquez J C,Guerrero J M,Savaghebi M, et al.Modeling, analysis, and design of stationary reference frame droop controlled parallel three-phase voltage source inverters[J]. IEEE Transactions on Industrial Electronics,2013,60(4): 1271-1280.
[19] 马添翼,金新民,梁建刚.孤岛模式微电网变流器的复合式虚拟阻抗控制策略[J]. 电工技术学报,2013,28(12): 304-312.
Ma Tianyi, Jin Xinmin, Liang Jiangang.Multiple virtual impedance control and method of mirco-grid converter under island mode[J]. Transactions of China Electrotechnical Society, 2013, 28(12): 304-312.
[20] Savaghebi M, Jalilian A, Juan CV, et al.Autonomous voltage unbalance compensation in an island droop-controlled microgrid[J].IEEE Transactions on Industrial Electronics, 2013, 60(4): 1390-1402.
[21] Lee L T, Hu SH, Chan Y H.D-STATCOM with positive-sequence admittance and negative- sequence conductance to mitigate voltage fluctuations in high-level penetration ofdistributed- generation systems[J].IEEE Transactions on Industrial Electronics,2013,60(4): 1417-1428.