基于逆变器直流侧电流控制的微网无幅差控制
CSTR:
作者:
通讯作者:

解东(1990),男,硕士研究生,主要从事微电网运行控制的研究;Email:xiedongwumiao@163.com

中图分类号:

TM712

基金项目:

国网浙江省电力公司科技项目(SGZJPX00PXJS1500197)


Nonamplitude difference control of microgrid based on DCside current control of inverter
Author:
  • 摘要
  • | |
  • 访问统计
  • |
  • 参考文献 [17]
  • | | | |
  • 文章评论
    摘要:

    在储能系统作为主电源的微网中,储能系统的输出特性直接影响微网的电能质量。当储能系统输出不能快速调节时,将出现微网电能质量不满足要求的问题。传统的V/f控制策略采用无功-电压下垂控制策略,在孤岛运行时存在电压偏移,会影响微网整体的电能质量,且在下垂控制中下垂系数参数选取难免会出现误调节问题。为解决这些问题,该文探讨逆变器直流侧和交流侧电量的关系,在实施储能逆变器控制策略的基础上加入直流电流控制,解决电压偏移以及误调节问题,达到微电网无幅差控制的目的。最后,使用PSCAD软件搭建风光储微网模型进行仿真检验,证明控制策略的有效性。

    Abstract:

    In the microgrid with the energy storage system as the main power source, the output characteristics of the energy storage system directly affect the power quality of the microgrid. When the output of the energy storage system can not be adjusted quickly, the problem occurs that the power quality of the microgrid does not meet the requirements. The traditional V/f control strategy adopts the reactivevoltage droop control strategy. When the island is running, there is a voltage offset, which will affect the overall power quality of the microgrid. And in the droop control, the droop coefficient parameter selection inevitably leads to misadjustment. In order to solve these problems, this paper discusses the relationship between the DC and AC power of the inverter. Based on the implementation of the control strategy of the energy storage inverter, DC current control is added to solve the problem of voltage offset and misadjustment to achieve nonamplitude difference control of microgrid. Finally, the PSCAD software is used to build the wind and solar storage microgrid model for simulation and verification, proving the effectiveness of the control strategy.

    参考文献
    [1] 王成山,武震,李鹏.微电网关键技术研究[J].电工技术学报,2014,29(2):112.WANG Chengshan,WU Zhen,LI Peng.Research on key technologies of microgrid[J].Transactions of China Electrotechnical Society,2014,29(2):112.
    [2] 文浩,惠宇翔.基于DIgSILENT软件的微电网平滑切换的研究[J].智慧电力,2018,46(1):3337.WEN Hao,HUI Yuxiang.Research on microgrid smooth switching based on DIgSILENT software[J].Smart Power,2018,46(1):3337.
    [3] 聂志强,梁晖,罗浩,等.基于非线性下垂控制的单模式微网并/离网无缝切换技术[J].电网技术,2016,40(5):13711378.NIE Zhiqiang,LIANG Hui,LUO Hao,et al.Single modegridconnected/islanded microgrid seamless transition based on nonlinear droop control technology[J].Power System Technology,2016,40(5):13711378.
    [4] 张雪松,赵波,李鹏,等.基于多层控制的微电网运行模式无缝切换策略[J].电力系统自动化,2015,39(9):179184+199.ZHANG Xuesong,ZHAO Bo,LI Peng,et al.Seamless switching strategies for microgrid based on multilayer control architecture[J].Automation of Electric Power Systems,2015,39(9):179184+199.
    [5] 郭通,李燕青,仝年,等.基于自调节下垂系数的微电网控制策略[J].电力科学与技术学报,2017,32(2):7782+91.GUO Tong,LI Yanqing,TONG Nian,et al.Control strategy of microgrid based on selfadjustable droopcoefficient[J].Journal of Electric Power Science and Technology,2017,32(2):7782+91.
    [6] 支娜,张辉.直流微电网改进分级控制策略研究[J].高电压技术,2016,42(4):13161325.ZHI Na,ZHANG Hui.Improved hierarchical controlstrategy for DC microgrid[J].High Voltage Engineering,2016,42(4):13161325.
    [7] 宋绍剑,阳喜,刘斌,等.基于电网阻抗的并网逆变器准比例谐振控制[J].中国电力,2019,52(12):9096.SONG Shaojian,YANG Xi,LIU Bin,et al.Quasiproportional resonance control of gridconnected inverter based on grid impedance[J].Electric Power,2019,52(12):9096.
    [8] 李昊,王杰.基于虚拟同步发电机技术的改进微网下垂控制[J].电力科学与技术学报,2018,33(2):1119.LI Hao,WANG Jie.Modified doorp control based on virtual synchronous generator[J].Journal of Electric Power Science and Technology,2018,33(2):1119.
    [9] 鲍薇,胡学浩,李光辉,等.基于同步电压源的微电网分层控制策略设计[J].电力系统自动化,2013,37(23):2026.BAO Wei,HU Xuehao,LI Guanghui,et al.Synchronousvoltage source based design of hierarchical control strategy for microgrid[J].Automation of Electric Power Systems,2013,37(23):2026.
    [10] 柏管,陈卓,刘飞.基于自调节下垂控制的分布式电源并联运行技术[J].电力系统保护与控制,2019,47(8):120126.BAI Guan,CHEN Zhuo,LIU Fei.Parallel operation technology of distributed generation based on selfregulation droop control[J].Power System Protection and Control,2019,47(8):120126.
    [11] 李山,叶鹏.一种改进的微电网并联逆变器下垂控制策略[J].沈阳工程学院学报:自然科学版,2016,12(4):289296.LI Shan,YE Peng.An improved droop control strategyfor parallel lnverters in micro grid[J].Journal of Shenyang Institute of Engineering:Natural Science,2016,12(4):289296.
    [12] 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):169175.LU Sichen,PAN Zaiping.Droop control strategy of windpower microgrid system without energy storage device[J].Transactions of China Electrotechnical Society,2016,31(18):169175.
    [13] 郭权利,苑舜,周春阳,等.基于模糊控制的微网平滑切换控制策略的研究[J].高电压技术,2015,41(10):32813287.GUO Quanli,YUAN Shun,ZHOU Chunyang,et al.Research on control strategy of smooth switching between microgrid and distribution network based on fuzzy principle[J].High Voltage Engineering,2015,41(10):32813287.
    [14] 张加胜,张磊.四象限变流器的一种统一性建模及分析方法研究[J].中国电机工程学报,2004,24(8):3944.ZHANG Jiasheng,ZHANG Lei.Research on an generalunified modeling and analysis approach of 4quadrant converters[J].Proceedings of the CSEE,2004,24(8):3944.
    [15] 张加胜,张磊.PWM逆变器的直流侧等效模型研究[J].中国电机工程学报,2007,27(4):103107.ZHANG Jiasheng,ZHANG Lei.Research on the DCsideequivalent model of PWM invertetrs[J].Proceedings of the CSEE,2007,27(4):103107.
    [16] Chen L J,Mei S W.An integrated control and protection system for photovoltaic microgrids[J].CSEE Journal of Power & Energy Systems,2015,1(1):3642.
    [17] Mohamed A R I,adwan A A.Hierarchical control system for robust microgrid operation and seamless mode transfer in active distribution systems[J].IEEE Transactions on Smart Grid,2011,2(2):352362.
    相似文献
    引证文献
    网友评论
    网友评论
    分享到微博
    发 布
引用本文

解 东,杨欢红,丁宇涛,等.基于逆变器直流侧电流控制的微网无幅差控制[J].电力科学与技术学报,2020,35(4):107-113.
XIE Dong, YANG Huanhong, DING Yutao, et al. Nonamplitude difference control of microgrid based on DCside current control of inverter[J]. Journal of Electric Power Science and Technology,2020,35(4):107-113.

复制
分享
文章指标
  • 点击次数:504
  • 下载次数: 3179
  • HTML阅读次数: 0
  • 引用次数: 0
历史
  • 在线发布日期: 2020-09-04
文章二维码