摘要
为保障交直流混合微电网系统内重要负荷持续稳定供电,要求交直流接口逆变器快速检测出孤岛,并实现并网到孤岛运行模式的转换。分析了交直流微电网平台设计与孤岛检测原理,提出了一种含主动孤岛检测方法的逆变器工作模式转换控制策略。实现快速无盲区检测出孤岛,为逆变器模式转换提供指令信号,使逆变器由并网工作模式快速平滑转换到孤岛运行模式,保障了重要负荷供电可靠性。仿真和实验结果验证了所提控制策略的有效性与可靠性。
In order to protect power supply for important load in hybrid AC/DC micro-grid, the AC/DC interface inverter must detect island quickly, and a soomth moving from grid-connectod mode to islanded mode.The principe of AC/DC micro-grid platform and islanding detections are analyzed, a novel control strategy for inverter with active islanding detection is presented, which can ensure no non-detection zone islanding detection, a signal for mode transition is pro- vided, from the grid work mode of the inverter fast smooth operation mode switch to the islandod mode, protect im- portant load power supply reliability.Simulation and experimental results show the effectiveness and reliability of the proposed control strategy.
作者
李显国
周稳
戴瑜兴
毕大强
LI Xian-guo ZHOU Wen DAI Yu-xing BI Da-qiang(Zhejiang Province Engineering Laboratory of Electrical Digital Design Technology, Wenzhou University, Wenzhou 325035, China)
出处
《电力电子技术》
CSCD
北大核心
2017年第1期49-52,共4页
Power Electronics
基金
国家高技术研究发展计划(863)(2012AA0512-01)
浙江省自然科学基金重点项目(LZ16E050002)~~
关键词
微电网
逆变器
主动孤岛检测
模式转换
micro-grid
inverter
active islanding detection
mode transition
