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柔性直流輸電系統(tǒng)中虛擬同步發(fā)電機(jī)技術(shù)研究綜述

來(lái)源:電工電氣發(fā)布時(shí)間:2022-08-29 14:29 瀏覽次數(shù):451

柔性直流輸電系統(tǒng)中虛擬同步發(fā)電機(jī)技術(shù)研究綜述

趙瑩萍1,潘歡1,2,姜漢周1
(1 寧夏大學(xué) 物理與電子電氣工程學(xué)院,寧夏 銀川 750021;
2 寧夏電力能源安全重點(diǎn)實(shí)驗(yàn)室,寧夏 銀川 750004)
 
    摘 要:虛擬同步發(fā)電機(jī)技術(shù) (VSG) 通過(guò)對(duì)同步發(fā)電機(jī) (SG) 的慣性響應(yīng)和有功-頻率下垂特性的模擬,可為交流網(wǎng)絡(luò)提供頻率支撐。介紹了基于電壓源換流器的柔性直流輸電 (VSC-HVDC) 系統(tǒng)的發(fā)展以及換流器控制方式,對(duì)能為本地交流網(wǎng)絡(luò)以及互聯(lián)的異步交流網(wǎng)絡(luò)提供頻率支撐的 VSG 技術(shù)進(jìn)行了解釋?zhuān)换诂F(xiàn)有學(xué)術(shù)研究,對(duì) VSC-HVDC 系統(tǒng)中 VSG 控制技術(shù)的應(yīng)用進(jìn)行綜述;闡述了 VSG 控制中引入直流電壓控制以及采用多 VSG 并聯(lián)控制有可能會(huì)出現(xiàn)的問(wèn)題,指出如何克服或減小該問(wèn)題的影響是未來(lái)研究的方向。
    關(guān)鍵詞: 虛擬同步發(fā)電機(jī);柔性直流輸電;頻率支撐;換流器控制;直流電壓控制
    中圖分類(lèi)號(hào):TM721.1     文獻(xiàn)標(biāo)識(shí)碼:A     文章編號(hào):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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