Bidirectional Droop Control of Interlinking Converter in AC/DC Hybrid Micro-Grid

2016 3rd International Conference on Information Science and Control Engineering (ICISCE) Pub Date : 2016-07-08 DOI:10.1109/ICISCE.2016.192

Ji Yu, Wu Ming, Liu Haitao, Li Yang, Zhang Ying

{"title":"Bidirectional Droop Control of Interlinking Converter in AC/DC Hybrid Micro-Grid","authors":"Ji Yu, Wu Ming, Liu Haitao, Li Yang, Zhang Ying","doi":"10.1109/ICISCE.2016.192","DOIUrl":null,"url":null,"abstract":"The interlinking converter in an AC/DC hybrid micro-grid plays a crucial role in the stable operation and power allocation of power system. A bidirectional droop control method for the converter is proposed, which measures the power demand degree of AC sub-grid and DC sub-grid according to AC bus frequency and DC bus voltage respectively, and determines the direction and magnitude of the converter transmission power. Two droop control modules, DC voltage-active power and AC frequency-active power, are included in the control structure. The power reference value of the converter is achieved from the output subtraction of two modules. Meanwhile to reduce the deviation of voltage and frequency caused by droop control, a recovery control is designed to improve the power quality and the reliability of the hybrid micro-grid. The bidirectional droop control can accurately coordinate the transmission power between AC subgrid and DC sub-grid and make full use of the distributed energy. The feasibility of the control method is verified by a simulation system built with DigSILENT.","PeriodicalId":6882,"journal":{"name":"2016 3rd International Conference on Information Science and Control Engineering (ICISCE)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2016-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"12","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 3rd International Conference on Information Science and Control Engineering (ICISCE)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICISCE.2016.192","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 12

Abstract

The interlinking converter in an AC/DC hybrid micro-grid plays a crucial role in the stable operation and power allocation of power system. A bidirectional droop control method for the converter is proposed, which measures the power demand degree of AC sub-grid and DC sub-grid according to AC bus frequency and DC bus voltage respectively, and determines the direction and magnitude of the converter transmission power. Two droop control modules, DC voltage-active power and AC frequency-active power, are included in the control structure. The power reference value of the converter is achieved from the output subtraction of two modules. Meanwhile to reduce the deviation of voltage and frequency caused by droop control, a recovery control is designed to improve the power quality and the reliability of the hybrid micro-grid. The bidirectional droop control can accurately coordinate the transmission power between AC subgrid and DC sub-grid and make full use of the distributed energy. The feasibility of the control method is verified by a simulation system built with DigSILENT.

查看原文本刊更多论文

交直流混合微电网中互连变换器的双向下垂控制

交直流混合微电网中的互联变流器对电力系统的稳定运行和功率分配起着至关重要的作用。提出了一种变换器的双向下垂控制方法，分别根据交流母线频率和直流母线电压测量交流子网和直流子网的电力需求程度，确定变换器传输功率的方向和大小。控制结构包括直流电压有功电源和交流频率有功电源两个下垂控制模块。变换器的功率参考值由两个模块的输出相减得到。同时，为了减小下垂控制引起的电压和频率偏差，设计了恢复控制，以提高混合微电网的电能质量和可靠性。双向下垂控制可以准确协调交直流子网之间的输电功率，充分利用分布式能量。利用DigSILENT软件搭建的仿真系统验证了该控制方法的可行性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2016 3rd International Conference on Information Science and Control Engineering (ICISCE)

自引率

0.00%

发文量