文章摘要
王帅,荆龙,吴学智,等.适用于模块化多电平储能变流器的分布式控制策略[J].电力系统自动化. DOI: 10.7500/AEPS20170904001.
WANG Shuai,JING Long,WU Xuezhi, et al.A Distributed Control Strategy for Modular Multilevel Energy Storage Converter[J].Automation of Electric Power Systems. DOI: 10.7500/AEPS20170904001.
适用于模块化多电平储能变流器的分布式控制策略
A Distributed Control Strategy for Modular Multilevel Energy Storage Converter
DOI:10.7500/AEPS20170904001
关键词: 模块化多电平储能变流器  分布式控制  下垂控制
KeyWords: MM-ESC  distributed control  droop control
上网日期:2018-03-06
基金项目:
作者单位E-mail
王帅 北京交通大学国家能源主动配电网技术研发中心 17117416@bjtu.edu.cn 
荆龙 北京交通大学国家能源主动配电网技术研发中心 ljing@bjtu.edu.cn 
吴学智 北京交通大学国家能源主动配电网技术研发中心北京电动车辆协同创新中心 xzhwu@bjtu.edu.cn 
李金科 北京交通大学国家能源主动配电网技术研发中心 12117355@bjtu.edu.cn 
武文 北京交通大学国家能源主动配电网技术研发中心 14121482@bjtu.edu.cn 
姜久春 北京交通大学国家能源主动配电网技术研发中心北京电动车辆协同创新中心 jcjiang@bjtu.edu.cn 
摘要:
      分布式控制可以有效降低主控制单元的通信与运算压力,便于增强系统的扩展能力与热插拔能力。本文针对模块化多电平储能变流器(Modular Multilevel Energy Storage Converter,MM-ESC)控制系统计算量大、通信量大、整定复杂等不足,提出一种减少通信和运算的分布式控制系统架构以及适用于该控制系统的子模块SOC下垂均衡控制策略。该分布式控制架构由一个中央控制单元与若干个子模块控制单元组成,中央控制单元进行交直流功率解耦控制;子模块控制单元根据本地子模块信息进行SOC下垂控制。通过分析子模块相间和相内功率差异化特性,分别设置下垂系数,从而实现子模块电池能量均衡。通过搭建五电平MMC储能变流器仿真系统以及实验平台对所述理论及控制方法进行验证,结果表明,与已有的控制系统相比,该控制架构中处理器计算量小、运行所需通信量小,同时可以满足系统运行要求。#$NL关键词:模块化多电平储能变流器;分布式控制;下垂控制;相内能量均衡;相间能量均衡
Abstract:
      The distributed control is easy to enhance the ability to expand and hot swap, also can effectively reduce the operation and communication pressure of the main controller. Due to a lot of disadvantages such as the large amount of com-munication and calculation in MM-ESC (Modular Multilevel Energy Storage Converter), a distributed control system architecture for reducing communication and calculation is proposed in this paper. The SOC droop control strategy which applies to the control system is also discussed. The distributed control system consists of a central control unit and several submodule control units. The central control unit performs power decoupling control and sends modulated information to the submodule control units, while the submodule control units performs SOC droop control according to local information. The power difference characteristics of intra-phase and inter-phase are analyzed, the droop coef-ficients are respectively set to achieve energy balance between batteries. The theory and control method are verified by a 5-level MM-ESC simulation system and an experiment platform. The results showed that the communication and calculation in proposed control system is smaller than the existing control system..#$NLKeywords: MM-ESC; distributed control; droop control; power balance intra-phase; power balance inter-phase
查看全文   查看/发表评论  下载PDF阅读器