中国电机工程学报2018，Vol.38Issue(5)：1408-1418,后插14,12.DOI:10.13334/j.0258-8013.pcsee.170004
基于虚拟电压的直流微电网多源协调控制策略
Multi-source Coordinated Control Strategy of DC Micro-grid Based on Virtual Voltage
摘要
Abstract
With the expansion of DC micro-grid capacity, coordination control, including centralized communication control and autonomous distributed control is becoming the research hotspot. Being absolutely dependent on central control unit, centralized communication control has low reliability. Based on virtual voltage and autonomous decentralized control, a distributed hierarchical control structure for DC micro grid was designed in this paper, and corresponding control strategies were set up at each layer to realize multi-source coordinated control. The influence of line resistance on current sharing control was analyzed, and the current sharing control strategy based on virtual voltage was proposed. Furthermore, an improved dynamic consistency algorithm was proposed to dynamically track the bus voltage at the outlet side of each converter and rapidly get a consistent value. In the case of convergence, changing communication topology has no influence on the current convergence state. The dynamic consistency algorithm and the coordinated control strategy were verified by simulation and experiments.关键词
直流微电网/多源协调控制/虚拟电压/自律分散控制/动态一致性算法/分布式分层结构Key words
DC micro-grid/multi-source coordinated control/virtual voltage/autonomous decentralized control/dynamic consistency algorithm/distributed hierarchical structure分类
信息技术与安全科学引用本文复制引用
谢文强,韩民晓,王皓界,李蕊,吴鸣..基于虚拟电压的直流微电网多源协调控制策略[J].中国电机工程学报,2018,38(5):1408-1418,后插14,12.基金项目
国家电网公司科技项目(PDB 17201600116). Key Technology Project of State Grid Corporation of China (PDB 17201600116). （PDB 17201600116）
