Multimode Operation Mechanism Analysis and Power Flow Flexible Control of a New Type of Electric Energy Router for Low-Voltage Distribution Network

被引：12

作者：

Zhao, Xiaojun ^{[1
]}

Liu, Yingrui ^{[1
]}

Chai, Xiuhui ^{[1
]}

Guo, Xiaoqiang ^{[1
]}

Wang, Xiaohuan ^{[1
]}

Zhang, Chunjiang ^{[1
]}

Wei, Tongzhen ^{[2
]}

Shi, Changli ^{[2
]}

Jia, Dongqiang ^{[3
]}

机构：

[1] Yanshan Univ, Dept Elect Engn, Key Lab Power Elect Energy Conservat & Motor Dr H, Qinhuangdao 066004, Hebei, Peoples R China

[2] Chinese Acad Sci, Inst Elect Engn, Beijing 100190, Peoples R China

[3] State Grid Beijing Elect Power Co, Beijing Elect Power Res Inst, Beijing 100031, Peoples R China

来源：

IEEE TRANSACTIONS ON SMART GRID | 2022年 / 13卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Voltage control; Reactive power; Topology; Electrostatic discharges; Transformers; Microgrids; Load flow; Electric energy router; power flow; flexible control; degree-of-freedom; multimode operation; BALANCE CONTROL; CONVERTER; LOADS;

D O I：

10.1109/TSG.2022.3170936

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Due to limitations of topology, the series architecture electric energy router (SA-EER) for low-voltage distribution network (LVDN) has the disadvantages that the energy transmission range is limited to 100% and reactive powers are unable to operate flexibly. For this reason, a new type of EER with series-parallel architecture (SPA-EER) is constructed in this paper, and it can break through the above disadvantages in SA-EER. In addition to series-parallel architecture, a two-degree-of-freedom power flow flexible control strategy (TDF-PFFCS) is proposed to further support the realization of these two breakthroughs. According to TDF, the operation states of SPA-EER can be discriminated into 6 modes, and then their operation mechanisms are analyzed. Considering the rated capacity limitations of LVDN ports and power electronic converters in SPA-EER, the operation ranges of TDF are discussed, and constraint relationships between TDF and these rated capacities are further established, so as to avoid the issue of over-limit rated capacities. Finally, the simulation results prove that the constructed SPA-EER and proposed TDF-PFFCS can achieve the transmission targets that the maximum allowable amounts of active and reactive powers are 200% and 120% respectively, which provides new design ideas and solutions for EERs to realize the high-power energy flexible transmission.

引用

页码：3594 / 3606

页数：13