一种低延时鲁棒功率下垂控制方法

doi:DOI

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (3508 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract On the basis of analyzing parallel multi-inverters’ power distribution mechanism, this paper proposes a low-delay robust droop control method.Through redesigning the equivalent output impedance of the inverters as the pure resistance, it can decouple the active/reactive powers in the droop controller.Then, by constructing integrator 1/s in active power control, the Q-f/P-U′ droop controller and U′ recovery mechanism is proposed to improve the robust of the output power against the line impedance and equivalent output impedance.Thus the parallel multi-inverters can share the load power with regard to the ratio of their rated capacities accurately.In additional, considering the phase characteristic of equivalent output impedance is unchanged in this method, it does not need to design the equivalent output impedance again and reduces the design difficulty.Moreover, the system dynamic can be improved by the least-mean-square adaptive algorithm, which reduces the control hysteresis of the power calculation.Finally, simulation and experimental results verify the validity of the proposed strategy.

Key words： Microgrid parallel inverters circulating current low-delay power control robust droop controller

Received: 28 May 2015 Published: 12 July 2016

PACS:

TM76

Fund:英文基金

About author:: 英文作者简介

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Zhou Leming
	Luo An
	Chen Yandong
	Li Mingshen
	Kuang Huimin

Cite this article:

Zhou Leming,Luo An,Chen Yandong等. A Low-Delay Robust Droop Control Method[J]. Transactions of China Electrotechnical Society, 2016, 31(11): 1-12.

URL:

https://dgjsxb.ces-transaction.com/EN/DOI OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I11/1

[1] 孟建辉,石新春,王毅,等.改善微电网频率稳定性的分布式逆变电源控制策略[J].电工技术学报,2015,30(4):70-79.
Meng Jianhui,Shi Xinchun,Wang Yi,et al.Control strategy of DER inverter for improving frequency stability of microgrid[J].Transactions of China Electrotechnical Society,2015,30(4):70-79.
[2] 窦春霞,李娜,徐晓龙.基于多智能体系统的微电网分散协调控制策略[J].电工技术学报,2015,30(7):127-134.
Dou Chunxia,Li Na,Xu Xiaolong.Multi-agent system based decentralized coordinated control Strategy for micro-grids[J].Transactions of China Electrotechnical Society,2015,30(7):127-134.
[3] Lopes J A P,Moreira C L,Madureira A G.Defining control strategies for microgrid island operation[J].IEEE Transactions on Power Systems,2006,21(2):916-924.
[4] 方景辉,温镇.分布式光伏就地自适应电压控制策略研究[J].电力系统保护与控制,2015,43(23):49-55.
Fang Jinghui,Wen Zhen.Research on local adaptive voltage control strategy based on distributed PV[J].Power System Protection and Control,2015,43(23):49-55.
[5] Guerrero J M,Vicuna L G,Matas J,et al.Output impedance design of parallel-connected UPS inverters with wireless load-sharing control[J].IEEE Transactions on Industrial Electronics,2005,52(4):1126-1135.
[6] 姚玮,陈敏,陈晶晶,等.一种用于无互联线逆变器并联的多环控制方法[J].电工技术学报,2008,23(1):84-88.
Yao Wei,Chen Min,Chen Jingjing,et al.An improved wireless control strategy for parallel operation of distributed generation inverters[J].Transactions of China Electrotechnical Society,2008,23(1):84-88.
[7] Guerrero J M,Vicuna L G,Matas J,et al.A wireless controller to enhance dynamic performance of parallel inverters in distributed generation systems[J].IEEE Transactions on Power Electronics,2004,19(5):1205-1213.
[8] 王逸超,罗安,金国彬.微网逆变器的改进鲁棒下垂多环控制[J].电工技术学报,2015,30(22):116-123.
Wang Yichao,Luo an,Jin Guobin.Improved robust droop multiple loop control for parallel inverters in microgrid[J].Transactions of China Electrotechnical Society,2015,30(22):116-123.
[9] Li Y W,Kao C N.An accurate power control strategy for power electronics interfaced distributed generation units operating in a low voltage multibus microgrid[J].IEEE Transactions on Power Electronics,2009,24(12):2977-2988.
[10]Yu Xiaoxiao,Khambadkone A M,Wang Huanhuan.Control of parallel-connected power converters for low voltage microgrid—prat Ⅰ:a hybrid control architecture[J].IEEE Transactions on Power Electron,2010,25(12):2962-2970.
[11]吴翔宇,沈沉,赵敏,等.基于公共母线电压的微电网孤网运行下垂控制策略[J].电工技术学报,2015,30(24):135-141.
Wu Xiangyu,Shen Chen,Zhao Min,et al.A droop control method based on PCC bus voltage in islanded microgrid[J].Transactions of China Electrotechnical Society,2015,30(24):135-141.
[12]荆龙,黄杏,吴学智.改进型微源下垂控制策略研究[J].电工技术学报,2014,28(2):146-152.
Jing Long,Huang Xing,Wu Xuezhi.Research on improved microsource droop control method[J].Transactions of China Electrotechnical Society,2014,28(2):146-152.
[13]Andrade E T,Ribeiro P E M J,Pereira J O P,et al.A novel power calculation method for droop-control microgrid systems[C]//2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition,Orlando,FL,2012:2254-2258.
[14]Yu W,Xu D,Ma K.A novel accurate active and reactive power calculation method for paralleled UPS system[C]//Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition,Washington,DC,2009:1269-1275.
[15]闫俊丽,彭春华,陈臣.基于动态虚拟阻抗的低压微电网下垂控制策略[J].电力系统保护与控制,2015,43(21):1-6.
Yan Junli,Peng Chunhua,Chen Chen.Droop control strategy based on dynamic virtual impedance in low-voltage micrigrid[J].Power System Protection and Control,2015,43(21):1-6.
[16]张庆海,彭楚武,陈燕东,等.一种微电网多逆变器并联运行控制策略[J].中国电机工程学报,2012,32(25):126-132.
Zhang Qinghai,Peng Chuwu,Chen Yandong,et al.A control strategy for parallel operation of multi-inverters in microgrid[J].Proceedings of the CSEE,2012,32(25):126-132.
[17]王瑞琪,程艳,孙树敏,等.基于坐标旋转虚拟阻抗的微电网控制与性能分析[J].电力系统保护与控制,2014,42(12):78-85.
Wang Ruiqi,Cheng Yan,Sun Shumin,et al.Control and performance analysis of microgrid based on coordinate rotational virtual impedance[J].Power System Protection and Control,2014,42(12):78-85.
[18]Yao Wei,Chen Min,Matas J,et al.Design and analysis of the droop control method for parallel inverters considering the impact of the complex impedance on the power sharing[J].IEEE Transactions on Industrial Electronics,2011,58(2):576-587.
[19]De Brabandere K,Bolsens B,Van den Keybus J,et al.A voltage and frequency droop control method for parallel inverters[J].IEEE Transactions on Power Electronics,2007,22(4):1107-1115.
[20]Tuladhar A,Jin H,Unger T,et al.Control of parallel inverters in distributed AC power systems with consideration of line impedance effect[J].IEEE Transactions on Industry Applications,2000,36(1):131-138.
[21]Zhong Q C.Robust droop controller for accurate proportional load sharing among inverters operated in parallel[J].IEEE Transactions on Industrial Electronics,2013,60(4):1281-1290.
[22]吕志鹏,苏剑,李蕊,等.不同功率等级为源逆变器并联控制新方法[J].电工技术学报,2013,28(7):191-198.
Lü Zhipeng,Su Jian,Li Rui,et al.New power control strategy on paralleled micro-source inverters with different power levels[J].Transactions of China Electrotechnical Society,2013,28(7):191-198.
[23]陈燕东,罗安,龙际根,等.阻性逆变器并联环流分析及鲁棒下垂多环控制[J].中国电机工程学报,2013,33(18):18-29.
Chen Yandong,Luo An,Long Jigen,et al.Circulating current analysis and robust droop multiple loop control method for parallel inverters using resistive output impedances[J].Proceedings of the CSEE,2013,33(18):18-29.
[24]Karimi-Ghartemani M,Iravani M R.A method for synchronization of power electronic converters in polluted and variable frequency environments[J].IEEE Transactions Power Systems,2004,19(3):1263-1270.
[25]Khajehoddin S A,Karimi-Ghartemani M,Bakhshai A,et al.A power control method with simple structure and fast dynamic response for single-phase grid-connected DG systems[J].IEEE Transactions on Power Electronics,2013,28(1):221-223.