周月宾;江道灼;郭捷;梁一桥;胡鹏飞;

• 1:浙江大学电气工程学院

摘要(Abstract)：

介绍了模块化多电平换流器型直流输电系统(modularmultilevel converter based high voltage direct current system,MMC-HVDC)的起停控制策略。启动分为不控启动阶段和可控启动阶段,对不控启动阶段模块化多电平换流器(modularmultilevel converter,MMC)的等效电路进行数学建模,得出了限流电阻与最大充电电流之间的数学关系,为限流电阻的选取提供了理论基础。停机分为能量反馈阶段和放电阶段,能量反馈阶段将MMC各子模块电容存储的能量部分反馈回电网,充分利用了MMC子模块储能的优势,提高了能量的利用率。放电阶段,通过一定的触发方式,逐步将能量耗散掉,该方法有效地降低了放电电阻的功率、阻值和耐压水平。最后,对建立的两端有源网络的MMC-HVDC系统进行了数字仿真,仿真结果验证了该启停控制策略的有效性。

关键词(KeyWords)： 模块化多电平换流器型直流输电;启停控制;自励启动;能量反馈;放电策略

Abstract:

Keywords:

基金项目(Foundation): 国家863高技术基金项目(2008AA05Z213)~~

作者(Author): 周月宾;江道灼;郭捷;梁一桥;胡鹏飞;

Email:

DOI: 10.13335/j.1000-3673.pst.2012.03.036

参考文献(References)：

• [1]汤广福.基于电压源换流器的高压直流输电技术[M].北京:中国电力出版,2010:3-7.
• [2]Marquard R.Modular multilevel converter:An universal concept forHVDC-Networks and extended DC-Bus-applications[C]//PowerElectronics Conference.Sapporo:Institute of Electrical andElectronics Engineers,2010:502-507.
• [3]Lesnicar A,Marquardt R.An innovative modular multilevel convertertopology suitable for a wide power range[C]//Power Tech ConferenceProceedings.Bologna,Italy:Institute of Electrical and ElectronicsEngineers,2003:6.
• [4]汤广福,贺之渊,滕乐天,等.电压源换流器高压直流输电技术最新研究进展[J].电网技术,2008,32(22):39-45.Tang Guangfu,He Zhiyuan,Teng Letian,et al.New Progress onHVDC technology based on voltage source converter[J].PowerSystem Technology,2008,32(22):39-45(in Chinese).
• [5]管敏渊,徐政.模块化多电平换流器型直流输电的建模与控制[J].电力系统自动化,2010,34(19),64-68.Guan Minyuan,Xu Zheng.Modeling and control of modularmultilever converter in HVDC transmission[J].Automation ofElectric Power Systems,2010,34(19):64-68(in Chinese).
• [6]魏晓光,汤广福.基于电压源换流器的高压直流输电系统离散化建模与仿真研究[J].电网技术,2006,30(20):34-39.Wei Xiaoguang,Tang Guangfu.Discretization modeling andsimulation study of HVDC power transmission system based onvoltage source converters[J].Power System Technology,2006,30(20):34-39(in Chinese).
• [7]邹超,王奔,李泰.向无源网络供电的VSC-HVDC系统控制策略[J].电网技术,2009,33(2):84-88.Zou Chao,Wang Ben,Li Tai.Control strategy of VSC-HVDC systemsupplying power for passive networks[J].Power System Technology,2009,33(2):84-88(in Chinese).
• [8]严干贵,陈涛,穆钢,等.轻型高压直流输电系统的动态建模及非线性解耦控制[J].电网技术,2007,31(6):45-50.Yan Gangui,Chen Tao,Mu Gang,et al.Dynamic modeling andnonlinear-decouple control of HVDC light system[J].Power SystemTechnology,2007,31(6):45-50(in Chinese)
• [9]李国杰,阮思烨.应用于并网风电场的有源型电压源直流输电系统控制策略[J].电网技术,2009,33(1):52-55.Li Guo-jie,Ruan Siye.Control strategy of VSC-HVDC with energystorage system used in grid-connected wind farms[J].Power SystemTechnology,2009,33(1):52-55(in Chinese).
• [10]屠卿瑞,徐政,郑翔,等.模块化多电平换流器型直流输电内部环流机理分析[J].高电压技术,2010,36(2),547-552.Tu Qingrui,Xu Zheng,Zheng Xiang,et al.Mechanism analysis onthe ciuculating current in modular multilevel converter based HVDC[J].High Voltage Engineering,2010,36(2):547-552(in Chinese).
• [11]屠卿瑞,徐政,管敏渊,等.模块化多电平换流器环流抑制控制器设计[J].电力系统自动化,2010,34(18):57-61.Tu Qingrui,Xu Zheng,Guan Minyuan,et al.Design of circulatingcurrent suppressing controllers for modular multileverconverter.Automation of Electric Power Systems,2010,34(18):57-61(in Chinese).
• [12]Guanjun Ding,Guangfu Tang,Zhiyuan He,et al.New technologiesof voltage source converter(VSC)for HVDC transmission systembased on VSC[C]//Power and Energy Society General Meeting-Conversion and Delivery of Electrical Energy in the 21stCentury.Pittsburgh,USA:IEEE,2008:1-8.
• [13]梁海峰,王鹏、李广凯,等.VSC-HVDC系统启动过程控制及仿真[J].华北电力大学学报,2006,33(2):79-82.Liang Haifeng,Wang Peng,Li Guangkai,et al.Simulation and controlof VSC-HVDC start-up process[J].Journal of North China ElectricPower University,2006,33(2):79-82(in Chinese).
• [14]陈海荣,张静,潘武略.电压源换流器型直流输电系统的启动控制[J].高电压技术,2009,35(5):1164-1169.Chen Hairong,Zhang Jing,Pan Wulue.Start-up control of VSC basedon HVDC system[J].High Voltage Engineering,2009,35(5):1164-1169(in Chinese).
• [15]张静,徐政,陈海荣.VSC-HVDC系统启动控制[J].电工技术学报,2009,24(9):159-165.Zhang Jing,Xu Zheng,Chen Hairong.Startup procedures for theVSC-HVDC system[J].Transsctions of China Electrotechnicalsociety,2009,24(9):159-165.