适用于多端直流输电系统的模块化多端口直流潮流控制器
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摘要
针对多端直流输电系统潮流控制技术问题,提出了一种模块化多端口直流潮流控制器(MM-DPFC)。与现有DPFC相比,其在保留无需配备外部电源、输电线路功率双向可控以及多端口输出等优势的基础上,保证了DPFC各端口输出电压可基于本地进行独立控制,避免了传统多端口DPFC对输电系统主换流站直流输出电压调节的依赖,增强了其控制方式的灵活性与系统的可靠性。同时,其采用标准模块化设计,易于实现后期的端口拓展与系统冗余。文中首先详细分析了该控制器的拓扑结构与工作原理;然后,设计了相应的控制策略,保证了控制器的有效运行;最后,通过仿真与实验对其进行了多种工况下的验证。
Aiming at the problem of DC power flow control technology in the multi-terminal DC transmission system, a modular multi-port DC power flow controller(MM-DPFC) is proposed in this paper. Compared with the existing DPFC, it retains the advantages of no need of external power supply, bidirectional power control of the transmission line and multi-port output. Besides, it ensures the output voltage of each port of DPFC can be independently controlled based on the local and avoids the dependence on the voltage regulation at the DC outside of the main converter station in the transmission system, which enhances the flexibility and reliability of the system. At the same time, it uses the standard modular design, which easy to achieve the port expansion and system redundancy. Firstly, the topology and working principles of the controller are analyzed in detail. Then, the corresponding control strategy is designed to ensure the effective operation of the controller. Finally, the simulation and experiment are carried out under various conditions to verify it.
Aiming at the problem of DC power flow control technology in the multi-terminal DC transmission system, a modular multi-port DC power flow controller(MM-DPFC) is proposed in this paper. Compared with the existing DPFC, it retains the advantages of no need of external power supply, bidirectional power control of the transmission line and multi-port output. Besides, it ensures the output voltage of each port of DPFC can be independently controlled based on the local and avoids the dependence on the voltage regulation at the DC outside of the main converter station in the transmission system, which enhances the flexibility and reliability of the system. At the same time, it uses the standard modular design, which easy to achieve the port expansion and system redundancy. Firstly, the topology and working principles of the controller are analyzed in detail. Then, the corresponding control strategy is designed to ensure the effective operation of the controller. Finally, the simulation and experiment are carried out under various conditions to verify it.
引文
[1]冉晓红,苗世洪,吴英杰,等.基于最优功率分配的多端直流网络改进下垂控制策略[J].电工技术学报,2016,31(9):16-24.Ran Xiaohong,Miao Shihong,Wu Yingjie,et al.An improved droop control straegy for muti-terminal DCgrids based on optimal active power allocation[J].Transactions of China Electrotechnical Society,2016,31(9):16-24.
[2]陈霞,林卫星,孙海顺,等.基于多端直流输电的风电并网技术[J].电工技术学报,2011,26(7):60-67.Chen Xia,Lin Weixing,Sun Haishun,et al.LCC-MTDC technology for wind farms integration[J].Transactions of China Electrotechnical Society,2011,26(7):60-67.
[3]徐殿国,刘瑜超,武健.多端直流输电系统控制研究综述[J].电工技术学报,2015,30(17):1-11.Xu Dianguo,Liu Yuchao,Wu Jian.Review on control strategies of multi-terminal direct current transmission system[J].Transactions of China Electrotechnical Society,2015,30(17):1-11.
[4]陈伯超,增永胜,刘俊博,等.基于Sen Transformer的新型统一潮流控制器的仿真与实验[J].电工技术学报,2012,27(3):233-239.Chen Baichao,Zeng Yongsheng,Liu Junbo,et al.Simulation and experimental research of a novel unified power flow controller based on Sen Transformer[J].Transactions of China Electrotechnical Society,2012,27(3):233-239.
[5]徐岩,郅静.基于直流潮流和虚拟母线的多控制节点防连锁过载跳闸策略[J].电工技术学报,2015,30(13):77-86.Xu Yan,Zhi Jing.A muti control-node emergency control strategy based on DC power flow and virtual bus[J].Transactions of China Electrotechnical Society,2015,30(13):77-86.
[6]Jovcic D,Hajian M,Zhang H,et al.Power flow control in DC transmission grids using mechanical and semiconductor based DC/DC devices[C]//IETInternational Conference on AC and DC Power Transmission(ACDC),Birmingham,United Kingdom,2012:1-6.
[7]Van H D,Verboomen J,Purchala K,et al.Usefulness of DC power flow for active power flow analysis with flow controlling devices[C]//Proceedings of the 8th IEE International Conference on AC and DC Power Transmission,London,2006:58-62.
[8]Mu Qing,Liang Jun,Li Yalou,et al.Power flow control devices in DC grids[C]//Proceedings of IEEEPower and Energy Society General Meeting,San Diego,CA,2012:7.
[9]Bidirectional J D.High-power DC transformer[J].IEEE Transactions on Power Delivery,2009,24(4):2276-2283.
[10]Natori K,Obara H,Yoshikawa K,et al.Flexible power flow control for next-generation multiterminal DCpower network[C]//Proceedings of the 2014 IEEEEnergy Conversion Congress and Exposition(ECCE),Pittsburgh,2014:778-784.
[11]贾文鹏,吴俊勇,郝亮亮,等.一种应用于多端柔性直流系统的新型潮流控制器[J].电网技术,2016,40(4):1073-1079.Jia Wenpeng,Wu Junyong,Hao Liangliang,et al.Anovel DC power flow controller for multi-terminal flexible DC system[J].Power System Technology,2016,40(4):1073-1079.
[12]何荣凯,朱晋,霍群海,等.新型直流电网潮流控制器及其控制方法[J].电力系统自动化,2017,40(4):131-135.He Rongkai,Zhu Jin,Huo Qunhai,et al.Novel power flow controller for DC grid and its control method[J].Automation of Electric Power Systems,2017,40(4):131-135.
[13]许烽,徐政,刘高任.新型直流潮流控制器及其在环网式直流电网中的应用[J].电网技术,2014,38(4):2644-2650.Xu Feng,Xu Zheng,Liu Gaoren.A neotype of DCpower flow controller and its applications in meshed DC grids[J].Power System Technology,2014,38(4):2644-2650.
[14]Barker C,Whitehouse R.A current flow controller for use in HVDC grids[C]//IET International Conference on AC and DC Power Transmission(ACDC),Birmingham,2012:1-5.
[15]Deng Na,Wang Puyu,Zhang Xiaoping,et al.A DCcurrent flow controller for meshed modular multilevel converter multiterminal HVDC grids[J].CSEE Journal of Power and Energy Systems,2015,1(1):43-51.
[16]Chen Wu,Zhu Xu,Yao Liangzhong,et al.An interline DC power-flow controller(IDCPFC)for multiterminal HVDC system[J].IEEE Transactions on Power Delivery,2015,30(4):2027-2036.
[17]Chen Wu,Zhu Xu,Yao Liangzhong,et al.A novel interline DC power-flow controller(IDCPFC)for meshed HVDC grids[J].IEEE Transactions on Power Delivery,2016,31(4):1719-1727.
[18]陶以彬,姚良忠,李官军,等.适用于直流电网的新型直流潮流控制器[J].电网技术,2016,40(11):3427-3432.Tao Yibin,Yao Liangzhong,Li Guanjun,et al.Anovel DC power flow controller suitable for DCgrid[J].Power System Technology,2016,40(11):3427-3432.
[19]Diab H Y,Mostafa M,Tennakoon S B.Operation and control of an insulated gate bipolar transistor-based current controlling device for power flow applications in multiterminal high-voltage direct current grids[J].IET Power Electronics,2016,9(2):305-315.
[20]王鹤,边竞,李国庆,等.适用于柔性直流电网的多端口直流潮流控制器[J].电力系统自动化,2017,41(22):102-108.Wang He,Bian Jing,Li Guoqing,et al.Multi-port DCpower flow controller for flexible DC power grid[J].Automation of Electric Power Systems,2017,41(22):102-108.
[21]汤广福,罗湘,魏晓光.多端直流输电与直流电网技术[J].中国电机工程学报,2013,33(10):8-17.Tang Guangfu,Luo Xiang,Wei Xiaoguang.Multiterminal HVDC and DC-grid technology[J].Proceedings of the CSEE,2013,33(10):8-17.
[22]王旭亮.双向DC/DC串并联系统控制策略的研究[D].北京:北京交通大学,2017.
[23]庄凯,阮新波.输入串联输出并联的集中式均压控制策略[J].电工技术学报,2009,24(4):147-151.Zhuang Kai,Ruan Xinbo.Centralized voltage sharing control strategy for input-series output-parallel inverter[J].Transactions of China Electrotechnical Society,2009,24(4):147-151.
[24]Ruan Xinbo,Chen Wu,Cheng Lulu,et al.Control strategy for input-series-output-parallel converters[J].IEEE Transactions on Industrial Electronics,2009,56(4):1174-1185.
[2]陈霞,林卫星,孙海顺,等.基于多端直流输电的风电并网技术[J].电工技术学报,2011,26(7):60-67.Chen Xia,Lin Weixing,Sun Haishun,et al.LCC-MTDC technology for wind farms integration[J].Transactions of China Electrotechnical Society,2011,26(7):60-67.
[3]徐殿国,刘瑜超,武健.多端直流输电系统控制研究综述[J].电工技术学报,2015,30(17):1-11.Xu Dianguo,Liu Yuchao,Wu Jian.Review on control strategies of multi-terminal direct current transmission system[J].Transactions of China Electrotechnical Society,2015,30(17):1-11.
[4]陈伯超,增永胜,刘俊博,等.基于Sen Transformer的新型统一潮流控制器的仿真与实验[J].电工技术学报,2012,27(3):233-239.Chen Baichao,Zeng Yongsheng,Liu Junbo,et al.Simulation and experimental research of a novel unified power flow controller based on Sen Transformer[J].Transactions of China Electrotechnical Society,2012,27(3):233-239.
[5]徐岩,郅静.基于直流潮流和虚拟母线的多控制节点防连锁过载跳闸策略[J].电工技术学报,2015,30(13):77-86.Xu Yan,Zhi Jing.A muti control-node emergency control strategy based on DC power flow and virtual bus[J].Transactions of China Electrotechnical Society,2015,30(13):77-86.
[6]Jovcic D,Hajian M,Zhang H,et al.Power flow control in DC transmission grids using mechanical and semiconductor based DC/DC devices[C]//IETInternational Conference on AC and DC Power Transmission(ACDC),Birmingham,United Kingdom,2012:1-6.
[7]Van H D,Verboomen J,Purchala K,et al.Usefulness of DC power flow for active power flow analysis with flow controlling devices[C]//Proceedings of the 8th IEE International Conference on AC and DC Power Transmission,London,2006:58-62.
[8]Mu Qing,Liang Jun,Li Yalou,et al.Power flow control devices in DC grids[C]//Proceedings of IEEEPower and Energy Society General Meeting,San Diego,CA,2012:7.
[9]Bidirectional J D.High-power DC transformer[J].IEEE Transactions on Power Delivery,2009,24(4):2276-2283.
[10]Natori K,Obara H,Yoshikawa K,et al.Flexible power flow control for next-generation multiterminal DCpower network[C]//Proceedings of the 2014 IEEEEnergy Conversion Congress and Exposition(ECCE),Pittsburgh,2014:778-784.
[11]贾文鹏,吴俊勇,郝亮亮,等.一种应用于多端柔性直流系统的新型潮流控制器[J].电网技术,2016,40(4):1073-1079.Jia Wenpeng,Wu Junyong,Hao Liangliang,et al.Anovel DC power flow controller for multi-terminal flexible DC system[J].Power System Technology,2016,40(4):1073-1079.
[12]何荣凯,朱晋,霍群海,等.新型直流电网潮流控制器及其控制方法[J].电力系统自动化,2017,40(4):131-135.He Rongkai,Zhu Jin,Huo Qunhai,et al.Novel power flow controller for DC grid and its control method[J].Automation of Electric Power Systems,2017,40(4):131-135.
[13]许烽,徐政,刘高任.新型直流潮流控制器及其在环网式直流电网中的应用[J].电网技术,2014,38(4):2644-2650.Xu Feng,Xu Zheng,Liu Gaoren.A neotype of DCpower flow controller and its applications in meshed DC grids[J].Power System Technology,2014,38(4):2644-2650.
[14]Barker C,Whitehouse R.A current flow controller for use in HVDC grids[C]//IET International Conference on AC and DC Power Transmission(ACDC),Birmingham,2012:1-5.
[15]Deng Na,Wang Puyu,Zhang Xiaoping,et al.A DCcurrent flow controller for meshed modular multilevel converter multiterminal HVDC grids[J].CSEE Journal of Power and Energy Systems,2015,1(1):43-51.
[16]Chen Wu,Zhu Xu,Yao Liangzhong,et al.An interline DC power-flow controller(IDCPFC)for multiterminal HVDC system[J].IEEE Transactions on Power Delivery,2015,30(4):2027-2036.
[17]Chen Wu,Zhu Xu,Yao Liangzhong,et al.A novel interline DC power-flow controller(IDCPFC)for meshed HVDC grids[J].IEEE Transactions on Power Delivery,2016,31(4):1719-1727.
[18]陶以彬,姚良忠,李官军,等.适用于直流电网的新型直流潮流控制器[J].电网技术,2016,40(11):3427-3432.Tao Yibin,Yao Liangzhong,Li Guanjun,et al.Anovel DC power flow controller suitable for DCgrid[J].Power System Technology,2016,40(11):3427-3432.
[19]Diab H Y,Mostafa M,Tennakoon S B.Operation and control of an insulated gate bipolar transistor-based current controlling device for power flow applications in multiterminal high-voltage direct current grids[J].IET Power Electronics,2016,9(2):305-315.
[20]王鹤,边竞,李国庆,等.适用于柔性直流电网的多端口直流潮流控制器[J].电力系统自动化,2017,41(22):102-108.Wang He,Bian Jing,Li Guoqing,et al.Multi-port DCpower flow controller for flexible DC power grid[J].Automation of Electric Power Systems,2017,41(22):102-108.
[21]汤广福,罗湘,魏晓光.多端直流输电与直流电网技术[J].中国电机工程学报,2013,33(10):8-17.Tang Guangfu,Luo Xiang,Wei Xiaoguang.Multiterminal HVDC and DC-grid technology[J].Proceedings of the CSEE,2013,33(10):8-17.
[22]王旭亮.双向DC/DC串并联系统控制策略的研究[D].北京:北京交通大学,2017.
[23]庄凯,阮新波.输入串联输出并联的集中式均压控制策略[J].电工技术学报,2009,24(4):147-151.Zhuang Kai,Ruan Xinbo.Centralized voltage sharing control strategy for input-series output-parallel inverter[J].Transactions of China Electrotechnical Society,2009,24(4):147-151.
[24]Ruan Xinbo,Chen Wu,Cheng Lulu,et al.Control strategy for input-series-output-parallel converters[J].IEEE Transactions on Industrial Electronics,2009,56(4):1174-1185.