基于VSC-MTDC系統(tǒng)的改進(jìn)多點直流電壓控制策略
張濤,宋恒東,潘靈敏,昌國際,吳偉
(國網(wǎng)江蘇省電力有限公司檢修分公司,江蘇 南京 211102)
摘 要:針對多端直流輸電系統(tǒng)定電壓控制方式的不足,提出了考慮系統(tǒng)啟動之初和大幅功率變動時的改進(jìn)多點直流電壓控制策略,并搭建了含等效海上風(fēng)電場的多端直流輸電系統(tǒng),利用MATLAB/Simulink在多種擾動和故障運行工況下進(jìn)行了仿真分析。仿真結(jié)果表明,該控制策略具有較好的響應(yīng)速度、精度和穩(wěn)定性,能夠?qū)崿F(xiàn)系統(tǒng)換流站間的穩(wěn)定運行。
關(guān)鍵詞:風(fēng)電場;多點直流電壓控制;多端直流輸電
中圖分類號:TM714.2 文獻(xiàn)標(biāo)識碼:A 文章編號:1007-3175(2018)12-0012-05
Improved Multi-Point Direct Current Voltage Control Strategy Based on Voltage Source
Converter-Multi-Terminal Direct Current
ZHANG Tao, SONG Heng-dong, PAN Ling-min, CHANG Guo-ji, WU Wei
(State Grid Jiangsu Electric Power Co., Ltd Maintenance Branch Company, Nanjing 2111 02, China)
Abstract: Aiming at the constant voltage control method for multi-terminal direct current (DC) transmission systems, this paper proposed to improve the multipoint DC voltage control strategy considering the time of first system booting and sharp power fluctuation and established the multipoint DC transmission system equivalent to the offshore wind plant. Simulink in MATLAB was used to carry out simulation and analysis under a variety of disturbance and malfunction operation condition. Simulation results show that the control strategy has good response speed, precision and stability, and can achieve stable operation of the converter stations.
Key words: wind farm; multi-point direct current voltage control; multi-terminal direct current transmission
參考文獻(xiàn)
[1] LI Shuhui, TIMOTHY A H, XU Ling.Control of HVDC light system using conventional and direct current vector control approaches[J]. IEEE Transactions on Power Electronics,2010,25(12):3106-3118.
[2] DIERCKXSENS C, SRIVASTAVA K, REZA M, et al. A distributed DC voltage control method for VSC MTDC systems[J].Electric Power Systems Research,2012,82(1):54-58.
[3] 宋恒東,董學(xué)育. 風(fēng)力發(fā)電技術(shù)現(xiàn)狀及發(fā)展趨勢[J]. 電工電氣,2015(1):1-4.
[4] 唐洪良,周榮亮,孫磊. 海上風(fēng)電并網(wǎng)的關(guān)鍵技術(shù)與最新進(jìn)展[J]. 機電工程,2014,31(7):928-932.
[5] 付媛,王毅,張祥宇,等. 基于VSC-HVDC的海上風(fēng)電系統(tǒng)虛擬慣性控制技術(shù)[J]. 電測與儀表,2014,51(1):43-48.
[6] 湯廣福,羅湘,魏曉光. 多端直流輸電與直流電網(wǎng)技術(shù)[J]. 中國電機工程學(xué)報,2013,33(10):8-17.
[7] 陳謙,唐國慶,潘詩峰. 釆用多點直流電壓控制方式的VSC多端直流輸電系統(tǒng)[J]. 電力自動化設(shè)備,2004,24(5):10-15.
[8] 吳俊宏,艾芊. 多端柔性直流輸電系統(tǒng)在風(fēng)電場中的應(yīng)用[J]. 電網(wǎng)技術(shù),2009,33(4):22-27.
[9] 陳實,朱瑞可,李興源. 基于VSC-MTDC的風(fēng)電場并網(wǎng)控制策略研究[J]. 四川大學(xué)學(xué)報(工程科學(xué)版),2014,46(2):147-152.
[10] 丁濤,張承學(xué),孫元博. 基于本地信號的VSC-MTDC輸電系統(tǒng)控制策略[J]. 電力系統(tǒng)自動化,2010,34(9):44-48.
[11] 李響,韓民曉. 海上風(fēng)電串聯(lián)多端VSC-HVDC協(xié)調(diào)控制策略[J]. 電工技術(shù)學(xué)報,2013,28(5):42-48.
[12] 袁貴川,倪林,陳穎. 大型風(fēng)電場等值建模與仿真分析[J]. 廣東電力,2010,23(11):6-9.
[13] 章心因,吳在軍,郝思鵬,等. 風(fēng)力發(fā)電直流并網(wǎng)及變速直流發(fā)電系統(tǒng)運行控制研究[J]. 電測與儀表,2012,49(10):60-65.
[14] 陳海榮,徐征. 適用于VSC-MTDC系統(tǒng)的直流電壓控制策略[J]. 電力系統(tǒng)自動化,2006,30(19):28-33.
[15] 李梅航. 多端柔性直流輸電的關(guān)鍵技術(shù)研究[D]. 青島:青島科技大學(xué),2014.