Suzhou Electric Appliance Research Institute
期刊號: CN32-1800/TM| ISSN1007-3175

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柔性直流輸電係統中虛擬同步發電機技術研究綜述

來源:電工電氣發布時間:2022-08-29 14:29 瀏覽次數:0

柔性直流輸電係統中虛擬同步發電機技術研究綜述

趙瑩萍1,潘歡1,2,薑漢周1
(1 寧夏大學 物理與電子電氣工程學院,寧夏 銀川 750021;
2 寧夏電力能源安全重點實驗室,寧夏 銀川 750004)
 
    摘 要:虛擬同步發電機技術 (VSG) 通過對同步發電機 (SG) 的慣性響應和有功-頻率下垂特性的模擬,可為交流網絡提供頻率支撐。介紹了基於電壓源換流器的柔性直流輸電 (VSC-HVDC) 係統的發展以及換流器控製方式,對能為本地交流網絡以及互聯的異步交流網絡提供頻率支撐的 VSG 技術進行了解釋;基於現有學術研究,對 VSC-HVDC 係統中 VSG 控製技術的應用進行綜述;闡述了 VSG 控製中引入直流電壓控製以及采用多 VSG 並聯控製有可能會出現的問題,指出如何克服或減小該問題的影響是未來研究的方向。
    關鍵詞: 虛擬同步發電機;柔性直流輸電;頻率支撐;換流器控製;直流電壓控製
    中圖分類號:TM721.1     文獻標識碼:A     文章編號:1007-3175(2022)08-0001-07
 
Review of Virtual Synchronous Generator Technology in the
VSC-HVDC System
 
ZHAO Ying-ping1, PAN Huan1,2, JIANG Han-zhou1
(1 School of Physics and Electronic-Electrical Engineering, Ningxia University, Yinchuan 750021, China;
2 Ningxia Key Laboratory of Electrical Energy Security, Yinchuan 750004, China)
 
    Abstract: Virtual synchronous generator(VSG) provides frequency support to AC networks by simulating inertial response and droop characteristics of the active power frequency of the synchronous generator (SG). This paper introduced the VSC-HVDC system development and the control mode of the converter. Moreover, it elaborated on the VSG technology, which could provide frequency support for local AC networks and interconnected asynchronous AC networks. In addition, it summarized the application of VSG control technology in the VSC-HVDC system based on the existing academic research. Besides, this paper described the possible problems of introducing DC voltage control into VSG control and used multiple VSG parallel control. In sum, this study points out that the research direction could be how to overcome those problems or reduce the impacts.
    Key words: virtual synchronous generator; VSC-HVDC ; frequency support; converter control; DC voltage control
 
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