VSC-MTDC输电系统的新型混合式控制策略
|
摘要
以提高电压源型多端直流输电(VSC-MTDC)的运行可靠性为目的,针对VSC-MTDC输电系统现有控制策略存在的问题,提出了一种基于VSC-MTDC输电系统主、从式控制和电压下降式控制的新型混合式控制策略,并根据控制策略设计了相应的VSC控制器。该控制策略可以根据系统扰动的大小,使输电系统在主、从式控制和电压下降式控制中自由切换,最大限度地保持系统的稳定运行。采用在PSCAD/EMTDC中搭建的基于电压源型换流器四端直流输电系统仿真模型,对所提出的控制策略进行了仿真验证,仿真结果表明:直流输电系统能够自动进行均流且不失稳定性;每个换流器可以独立调节向直流网络输送的直流功率;新型控制方案确实可行。
To improve the operation reliability of VSCMTDC system, a novel hybrid control strategy based on principal and subordinate control and voltage drop control was presented, on which the corresponding controller of VSC was designed to switch the transmission system freely according to system disturbance strength. Finally, a fourterminal VSCMTDC model was developed in PSCAD/EMTDC to validate the feasibility of the proposed control strategy. The simulation results prove that the system is able to maintain the desired power distribution automatically without losing the stability and each converter can independently regulate DC power transferred to DC network,which shows the feasibility of novel hybrid control strategy.
To improve the operation reliability of VSCMTDC system, a novel hybrid control strategy based on principal and subordinate control and voltage drop control was presented, on which the corresponding controller of VSC was designed to switch the transmission system freely according to system disturbance strength. Finally, a fourterminal VSCMTDC model was developed in PSCAD/EMTDC to validate the feasibility of the proposed control strategy. The simulation results prove that the system is able to maintain the desired power distribution automatically without losing the stability and each converter can independently regulate DC power transferred to DC network,which shows the feasibility of novel hybrid control strategy.
引文
[1]冯明,李兴源,李宽,等.多端柔性直流输电系统启动控制及其仿真[J].电力系统保护与控制,2013,41(14):60-65.FENG Ming,LI Xing-yuan,LI Kuan,et al.Control and simulation of VSC-MTDC start-up procedure[J].Power System Protection and Control,2013,41(14):60-65.
[2]常勇,李晶,张海燕.基于广域信号的柔性直流输电附加阻尼控制[J].中国电力,2009,42(10):33-38.CHANG Yong,LI Jing,ZHANG Hai-yan.Design of VSC-HVDC supplementary controller based on wide-area signals[J].Electric Power,2009,42(10):33-38.
[3]高军彦,麻秀范.计及分布式发电的配电网扩展规划[J].中国电力,2010,43(2):39-43.GAO Jun-yan,MA Xiu-fan.Distribution network expansion planning including distributed generation[J].Electric Power,2010,43(2):39-43.
[4]胡泊,辛颂旭,白建华,等.我国太阳能发电开发及消纳相关问题研究[J].中国电力,2013,46(1):1-6.HU Bo,XIN Song-xu,BAI Jian-hua,et al.Study on issues concerning solar power development and accommodation in China[J].Electric Power,2013,46(1):1-6.
[5]冷明全,张恩龙,陈建业.适应极端高温环境的兆瓦级风力发电水冷系统[J].中国电力,2012,45(8):74-82.LENG Ming-quan,ZHANG En-long,CHEN Jian-ye.Water cooling system for converter of MW-Class wind power generators adaptable to extreme high temperature environment[J].Electric Power,2012,45(8):74-82.
[6]杜太行,李娜,王进立.双驱风力发电机的并网建模与仿真[J].中国电力,2011,44(11):68-72.DU Tai-hang,LI Na,WANG Jin-li.Modeling and simulating of a grid-connected double-driver wind turbine generator[J].Electric Power,2011,44(11):68-72.
[7]黄碧斌,李琼慧,孙李平,等.分布式天然气发电在上海电网中的应用及其影响[J].中国电力,2014,47(2):106-110.HUANG Bi-bin,LI Qiong-hui,SUN Li-ping,et al.Development of distributed natural gas generation and its impact on Shanghai power grid[J].Electric Power,2014,47(2):106-110.
[8]陈亮,李嘉龙,武小梅,等.广东电网天然气发电的相关问题及对策[J].中国电力,2011,44(9):76-79.CHEN Liang,LI Jia-long,WU Xiao-mei,et al.Natural gas power generation related problems and its countermeasures for Guangdong power grid[J].Electric Power,2011,44(9):76-79.
[9]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):39-44.TANG Guang-fu,HE Zhi-yuan,TENG Le-tian,et al.New progress on HVDC technology based on voltage source converter[J].Power System Technology,2008,32(22):39-44.
[10]任敬国,李可军,刘合金,等.基于改进定有功功率控制特性的VSC-MTDC系统仿真[J].电力系统自动化,2013,37(15):133-139.REN Jing-guo,LI Ke-jun,LIU He-jin,et al.Coordinated control strategy of VSC-MTDC system based on improved DC voltageactive power characteristic[J].Automation of Electric Power Systems,2013,37(15):133-139.
[11]陈海荣.基于VSC的多端直流输电系统的控制策略[J].电力建设,2011,32(8):58-63.CHEN Hai-rong.Control strategy of VSC based multi-terminal HVDC transmission system[J].Electric Power Construction,2011,32(8):58-63.
[12]王海军,陈潜.轻型直流输电技术在我国电网中的应用[J].中国电力,2009,42(11):32-35.WANG Hai-jun,CHEN Qian.Investigation on applying HVDC light to China power grid[J].Electric Power,2009,42(11):32-35.
[13]唐庚,徐政,刘昇,等.适用于多端柔性直流输电系统的新型直流电压控制策略[J].电力系统自动化,2013,37(15):125-132.TANG Geng,XU Zheng,LIU Sheng,et al.A novel DC voltage control strategy for VSC-MTDC system[J].Automation of Electric Power Systems,2013,37(15):125-132.
[14]管清伟.VSC-MTDC并联运行及其电压控制[D].北京:北京交通大学,2012.
[15]吴俊宏.多端柔性直流输电控制系统的研究[D].上海:上海交通大学,2010.
[16]张文亮,汤涌,曾南超.多端高压直流输电技术及应用前景[J].电网技术,2010,34(9):1-6.ZHANG Wen-liang,TANG Yong,ZENG Nan-chao.Multi-terminal HVDC transmission technologies and its application prospects in China[J].Power System Technology,2010,34(9):1-6.
[17]辛俊峰,韩金铜,康金良.基于直流电压下降特性的VSCMTDC控制策略研究[J].电力科学与工程,2011,27(8):42-46.XIN Jun-feng,HAN Jin-tong,KANG Jin-liang.Research on the control strategy for VSC-MTDC based on the DC voltage drop characteristics[J].Electric Power Science and Engineering,2011,27(8):42-46.
[18]阮思烨,李国杰,孙元章.多端电压源型直流输电系统的控制策略[J].电力系统自动化,2009,33(12):57-60.RUAN Si-ye,LI Guo-jie,SUN Yuan-zhang.A control strategy for multi-infeed VSC-HVDC systems[J].Automation of Electric Power Systems,2009,33(12):57-60.
[19]LU W,OOI B T.Optimal acquisition and aggregation of offshore wind power by multiterminal voltage-source HVDC[J].Power Delivery,IEEE Transactions on,2003,18(1):201-206.
[20]TANG W,LASSETER R H.An LVDC industrial power distribution system without central control unit[C]//Power Electronics Specialists Conference,2000.PESC 00.2000 IEEE31st Annual.IEEE,2000,2:979-984.
[2]常勇,李晶,张海燕.基于广域信号的柔性直流输电附加阻尼控制[J].中国电力,2009,42(10):33-38.CHANG Yong,LI Jing,ZHANG Hai-yan.Design of VSC-HVDC supplementary controller based on wide-area signals[J].Electric Power,2009,42(10):33-38.
[3]高军彦,麻秀范.计及分布式发电的配电网扩展规划[J].中国电力,2010,43(2):39-43.GAO Jun-yan,MA Xiu-fan.Distribution network expansion planning including distributed generation[J].Electric Power,2010,43(2):39-43.
[4]胡泊,辛颂旭,白建华,等.我国太阳能发电开发及消纳相关问题研究[J].中国电力,2013,46(1):1-6.HU Bo,XIN Song-xu,BAI Jian-hua,et al.Study on issues concerning solar power development and accommodation in China[J].Electric Power,2013,46(1):1-6.
[5]冷明全,张恩龙,陈建业.适应极端高温环境的兆瓦级风力发电水冷系统[J].中国电力,2012,45(8):74-82.LENG Ming-quan,ZHANG En-long,CHEN Jian-ye.Water cooling system for converter of MW-Class wind power generators adaptable to extreme high temperature environment[J].Electric Power,2012,45(8):74-82.
[6]杜太行,李娜,王进立.双驱风力发电机的并网建模与仿真[J].中国电力,2011,44(11):68-72.DU Tai-hang,LI Na,WANG Jin-li.Modeling and simulating of a grid-connected double-driver wind turbine generator[J].Electric Power,2011,44(11):68-72.
[7]黄碧斌,李琼慧,孙李平,等.分布式天然气发电在上海电网中的应用及其影响[J].中国电力,2014,47(2):106-110.HUANG Bi-bin,LI Qiong-hui,SUN Li-ping,et al.Development of distributed natural gas generation and its impact on Shanghai power grid[J].Electric Power,2014,47(2):106-110.
[8]陈亮,李嘉龙,武小梅,等.广东电网天然气发电的相关问题及对策[J].中国电力,2011,44(9):76-79.CHEN Liang,LI Jia-long,WU Xiao-mei,et al.Natural gas power generation related problems and its countermeasures for Guangdong power grid[J].Electric Power,2011,44(9):76-79.
[9]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):39-44.TANG Guang-fu,HE Zhi-yuan,TENG Le-tian,et al.New progress on HVDC technology based on voltage source converter[J].Power System Technology,2008,32(22):39-44.
[10]任敬国,李可军,刘合金,等.基于改进定有功功率控制特性的VSC-MTDC系统仿真[J].电力系统自动化,2013,37(15):133-139.REN Jing-guo,LI Ke-jun,LIU He-jin,et al.Coordinated control strategy of VSC-MTDC system based on improved DC voltageactive power characteristic[J].Automation of Electric Power Systems,2013,37(15):133-139.
[11]陈海荣.基于VSC的多端直流输电系统的控制策略[J].电力建设,2011,32(8):58-63.CHEN Hai-rong.Control strategy of VSC based multi-terminal HVDC transmission system[J].Electric Power Construction,2011,32(8):58-63.
[12]王海军,陈潜.轻型直流输电技术在我国电网中的应用[J].中国电力,2009,42(11):32-35.WANG Hai-jun,CHEN Qian.Investigation on applying HVDC light to China power grid[J].Electric Power,2009,42(11):32-35.
[13]唐庚,徐政,刘昇,等.适用于多端柔性直流输电系统的新型直流电压控制策略[J].电力系统自动化,2013,37(15):125-132.TANG Geng,XU Zheng,LIU Sheng,et al.A novel DC voltage control strategy for VSC-MTDC system[J].Automation of Electric Power Systems,2013,37(15):125-132.
[14]管清伟.VSC-MTDC并联运行及其电压控制[D].北京:北京交通大学,2012.
[15]吴俊宏.多端柔性直流输电控制系统的研究[D].上海:上海交通大学,2010.
[16]张文亮,汤涌,曾南超.多端高压直流输电技术及应用前景[J].电网技术,2010,34(9):1-6.ZHANG Wen-liang,TANG Yong,ZENG Nan-chao.Multi-terminal HVDC transmission technologies and its application prospects in China[J].Power System Technology,2010,34(9):1-6.
[17]辛俊峰,韩金铜,康金良.基于直流电压下降特性的VSCMTDC控制策略研究[J].电力科学与工程,2011,27(8):42-46.XIN Jun-feng,HAN Jin-tong,KANG Jin-liang.Research on the control strategy for VSC-MTDC based on the DC voltage drop characteristics[J].Electric Power Science and Engineering,2011,27(8):42-46.
[18]阮思烨,李国杰,孙元章.多端电压源型直流输电系统的控制策略[J].电力系统自动化,2009,33(12):57-60.RUAN Si-ye,LI Guo-jie,SUN Yuan-zhang.A control strategy for multi-infeed VSC-HVDC systems[J].Automation of Electric Power Systems,2009,33(12):57-60.
[19]LU W,OOI B T.Optimal acquisition and aggregation of offshore wind power by multiterminal voltage-source HVDC[J].Power Delivery,IEEE Transactions on,2003,18(1):201-206.
[20]TANG W,LASSETER R H.An LVDC industrial power distribution system without central control unit[C]//Power Electronics Specialists Conference,2000.PESC 00.2000 IEEE31st Annual.IEEE,2000,2:979-984.