分布式发电系统无缝切换控制策略

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (847 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The dual-mode inverters for distributed generation (DG) systems can operate in grid-connected and stand-alone mode. When the DG transfer the mode between the grid-connected and stand-alone mode, the control mode changes between the voltage control in stand-alone mode and current control in grid-connected mode. The key technology of dual-mode inverter is to achieve the seamless transfer and reduce the impact of current and voltage. During process of the transfer, the traditional seamless transfer control algorithm neglect non-synchronization of two kinds of transition, which address the issue of seamless transition assuming the work mode switching and control mode switching at the same time to complete. If ignoring the situation, it will cause voltage and current overshoot, which is unfavorable to power grid and load. After the transfer transient is detailed analyzed, this paper presents a voltage and current weighted control strategies without increasing system complexity. The strategy can ensure that the switching transient variables can be controlled to reduce the impact of voltage and current, and achieve seamless transfer. Simulations and experiments results verify the availability and correctness of the proposed method.

Key words： Dual-mode seamless transfer grid-connected off-grid

Received: 02 December 2010 Published: 19 March 2014

PACS:

TM461

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Wang Xiaohuan
	Zhang Chunjiang

Cite this article:

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): 217-222.

URL:

http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I2/217

[1] Ackerman T, Anderson G, Seder L. Distributed generation:a definition[J]. Electic Power System Research, 2001, 57(6): 195-204.
[2] 梁有伟, 胡志坚, 陈允平. 分布式发电及其在电力系统中的应用研究综述[J]. 电网技术, 2003, 27(12): 71-75.
[3] Bose B K. Energy, environment, and advances in power electronics[J]. IEEE Transactions on Power Electronics, 2000, 15(4): 688-701.
[4] Standards Coordinating Committee. 21.1547 IEEE standard for interconnecting distributed resources with electric power systems[S]. 2003.
[5] 林湘宁, 李正天, 薄志谦, 等.适用于微网孤岛运行的低频减载方法[J]. 电网技术, 2010, 34(3): 16-20.
[6] Z Peidong, Y Yanli, S Jin, et al. Opportunities and challenges for renewable energy policy in China[J]. Renewable and Sustainable Energy Review, 2009, 13(2): 439-449.
[7] 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.
[8] 鲁宗相, 王彩霞, 闵勇, 等. 微电网研究综述[J].电力系统自动化, 2007, 31(19): 100-106.
[9] Rohit Tirumala, Ned Mohan. Seamless transfer of gird-connected PWM inverters between utility-interactivea and stand-alone modes[C]. IEEE Applied Power Electronics Conference, Anaheim, USA, 2002: 1081- 1086.
[10] Shen Guoqiao, Xu Dehong. Voltage phase regulated seamless transfer control strategy for utility-intercon-
nected fuel cell inverters with an LCL-filter[C]. IEEE 37th Power Electronics Specialists Conference, 2006: 831-836.
[11] Qin Lei, Shuitao Yang, Fang Z Peng. Multi-loop control algorithms for seamless transition of grid- connectedInverter[C]. IEEE Applied Power Electronics Conference, Anaheim, USA, 2010: 844-848.
[12] 吴理博, 赵争鸣. 具有无功补偿功能的单级式三相光伏并网系统[J]. 电工技术学报, 2006, 21(1): 28-32.
[13] Lindgren M, Svensson J. Control of a voltage-source converter connected to the grid through an LCL- filter-application to active filtering[C]. IEEE 26th Power Electronics Specialists Conference, Fukuoda, Japan, 1998.