摘要
对于多微网系统,其内部负荷及DG输出功率波动会导致系统频率与电压的偏移,使联络线有功功率偏离计划值,并导致额外的无功功率在微网间流动。提出多微网系统频率与电压协调控制策略。通过对微网内部DG有功及无功功率的解耦控制实现频率与电压二次调节,将联络线有功功率恢复至计划值,抑制了无功功率在微网间的流动。
Fluctuations of internal load and DG output power in the multi-microgrid system would lead to its frequency and voltage offset and make the active power of the tie-line to deviate from its planned value,thus making extra reactive power flow between the micro-grids.A frequency and voltage coordination control strategy was proposed for the multi-microgrid system.Secondary frequency and voltage regulation was realized by decoupling control over DG active and reactive power in the microgrids to recover the active power in the tie-line to its planned value,thus suppressing flow of reactive power between the microgrids.
作者
范博
肖宏飞
林艳艳
钱浩
Fan Bo;Xiao Hongfei;Lin Yanyan;Qian Hao(College of Automation,Hangzhou Electronic Science&Technology University,Hangzhou Zhejiang 310018,China;College of Information Engineering,Hangzhou Electronic Science&Technology University,Hangzhou Zhejiang 311305,China;Huayi Wind Energy Co.,Ltd.,Wenzhou Zhejiang 325600,China)
出处
《电气自动化》
2020年第2期29-32,共4页
Electrical Automation
基金
浙江省教育厅科研项目(Y201738136)——微型电网频率稳定控制研究。
关键词
多微网系统
频率调节
电压控制
环流
联络线
multi-microgrid system
frequency regulation
voltage control
loop flow
tie-line
