|本期目录/Table of Contents|

[1]李永东,谢永流,程志江,等.微电网系统母线电压和频率无静差控制策略研究[J].电机与控制学报,2016,20(07):49-57.[doi:10. 15938 /j. emc. 2016. 07. 007]
 LI Yong-dong,XIE Yong-liu,CHENG Zhi-jiang,et al.Research of non-steady state error control strategy of bus voltage and frequency in micro-grid system [J].,2016,20(07):49-57.[doi:10. 15938 /j. emc. 2016. 07. 007]
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微电网系统母线电压和频率无静差控制策略研究(PDF)
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
20
期数:
2016年07
页码:
49-57
栏目:
出版日期:
2016-07-01

文章信息/Info

Title:
Research of non-steady state error control strategy of bus voltage and frequency in micro-grid system
作者:
李永东12 谢永流1 程志江1 董博2 邱麟2 樊小朝1
(1.新疆大学 电气工程学院,新疆 乌鲁木齐 830008; 2.清华大学 电机工程与应用电子技术系,北京 100084)
Author(s):
LI Yong-dong12 XIE Yong-liu1 CHENG Zhi-jiang1 DONG Bo2 QIU Lin2 FAN Xiao-chao1
 ( 1. College of Electrical Engineering,Xinjiang University,Urumqi 830008,China;
2. Department of Electrical Engineering and Application of Electronic Technology,Tsinghua University,Beijing 100084,China)
关键词:
微电网系统 下垂控制 并联运行 电能质量 输出阻抗
Keywords:
micro-grid system droop control parallel operating power quality output impedance
分类号:
TM 614
DOI:
10. 15938 /j. emc. 2016. 07. 007
文献标志码:
A
摘要:
当外电网发生故障时,微电网系统与外电网断开,运行在孤岛模式。此时,由于微电网系统 失去了外电网的支撑,微电网系统交流母线电压和频率需要采用下垂控制。针对传统下垂控制导 致电压和频率存在静差问题,分析控制参数对微电网系统逆变器输出阻抗的影响,并研究系统输出 阻抗呈感性的方法。在此基础上,提出无通讯线时消除电压和频率静差问题的控制方法,并分析下 垂系数对系统稳定性的影响。最后,通过仿真和实验对控制方法进行了验证,仿真结果表明采用下 垂曲线平移的办法减小静差,有功 - 频率和无功 - 电压下垂曲线垂直上移,没有发生明显的波动, 而且按照设定的下垂系数比例进行合理分配; 负载从 680 W 突增至
1 050 W,再从 1 050 W 突减至 680 W,两台逆变器输出电流迅速满足负载突变的要求,而且负载突变对母线电压影响较小。结果 表明本文控制方法的正确性和可行性,研究结果将对微电网的稳定运行提供一定的理论及实验指导。
Abstract:
When the micro-grid system is running in islanding mode,it’s disconnected from external pow-er because of the grid failure. In this case,the AC bus voltage and frequency of micro-grid system need to use droop control due to the loss of support from the grid. As the steady state error problems of voltage and frequency problems exist in the traditional droop control,the influence of the control parameters of the mi-cro-grid system inverter output impedance was analyzed,and the method of the system's output impedance for inductive was studied. Based on the above studies,a control method to eliminate voltage and frequency steady state error problem without communication line was put forward,and the impact on system stability by droop factor was analyzed. Finally,simulations and experiments control method was validated. The sim-ulation results show drooping curve translational approach reduces the static error,active-frequency andreactive-voltage sag vertical curve shift,significant fluctuations do not occur,and in accordance with the proportion set droop coefficient reasonable allocation; sudden load increases from 680 W to 1 050 W,and then suddenly reduced from 1 050 W to 680 W,and two inverter output current quickly meets the load re-quirements of mutation,and mutation on load bus voltageis is smaller. The results show the correctness and feasibility of the control method,and provide theoretical and experimental guidance for stable operation of microgrids.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2015 - 04 - 20
基金项目: 国家自然科学基金( 51567022) ; 新疆维吾尔自治区重点实验室开放课题科技支疆项目( 2015KL020) ; 新疆研究生科研创新项目( XJGRI2014028)
作者简介: 李永东( 1962—) ,男,博士,教授,博士生导师,研究方向为电力电子与电力传动;
谢永流( 1987—) ,男,硕士研究生,研究方向为微电网系统控制技术;
程志江( 1977—) ,男,副教授,硕士生导师,研究方向为微电网及控制技术;
董 博( 1983—) ,男,博士研究生,研究方向为微电网及储能控制技术;
邱 麟( 1989—) ,男,博士研究生,研究方向为微电网与矢量控制;
樊小朝( 1979—) ,男,讲师,博士研究生,研究方向为新能源并网控制技术。
更新日期/Last Update: 2016-08-22