基于直流电气弹簧的直流配电网电压波动抑制

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摘要直流配电网直接面向直流供用电设备,便于实现可再生能源的并网集成和直流负荷的高效用电,具有重要的应用前景。在直流配电网中,为了平抑由可再生能源引起的节点电压波动,该文提出直流电气弹簧的概念。利用电力电子变换器调节直流配电网中的可控负荷,使其跟随可再生能源出力的波动性和不确定性,实现对波动功率的就地平衡,避免间歇性潮流在配电线路上的传输,从而有效抑制直流配电网的电压波动。针对一个典型的直流配电网,在建立物理模型和电路模型的基础上,利用数学模型分析了电压波动问题的成因及其影响因素;然后提出了直流电气弹簧的数学模型、参数设计、控制策略和有效边界条件,对直流配电网的电压波动进行平抑;最后,利用PSCAD/EMTDC进行仿真,验证了所提控制方法的正确性和有效性。

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	曾正
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关键词 ：直流配电网, 可再生能源, 电压波动抑制, 电气弹簧, 可控负荷

Abstract：DC distribution network can effectively integrate renewable energy sources (RESs) into the utility and dispatch power to DC loads.As a result,it has been paid common attentions.To suppress the voltage fluctuation at buses caused by RESs,a DC electric spring (ES) concept is presented for DC distribution network applications.By using a PWM Buck/Boost converter,the proposed ES can regulate the voltage of controllable load at its terminal bus.The power consumption of the controllable load can track and compensate the intermittent power generation of RESs.Because the intermittent power can be balanced by the local load and cannot flow in the network,the voltage fluctuation at buses can be naturally suppressed.In this paper,aiming to a typical DC distribution network,the physical model and the circuit model of the ES are built.Then a detailed mathematical model is proposed to analyze the factors influencing the voltage fluctuation.Schematic topology,control scheme,parameter design,and controllable boundary of the ES are then proposed to suppress the voltage fluctuation.Validation and effectiveness of the proposed models and approaches are confirmed by the simulated results of PSCAD/EMTDC.

Key words： DC distribution network renewable energy resource voltage fluctuation suppression electric spring controllable load

收稿日期: 2015-09-20 出版日期: 2016-09-18

PACS:

TM72

基金资助:国家重点基础研究发展计划(973项目)(2012CB215200)和中央高校基本科研业务费专项基金(106112015CDJXY150005,CDJZR12150074)资助项目。

作者简介: 曾正男,1986年生,博士,讲师,研究方向为分布式发电与微电网、电能质量、并网逆变器。E-mail:zengerzheng@126.com(通信作者);邵伟华男,1991年生,博士研究生,研究方向为柔性直流输电、电力电子器件可靠性。E-mail:shaoweihuacqu@cqu.edu.cn

引用本文:

曾正,邵伟华,冉立,孙文涛,马丽. 基于直流电气弹簧的直流配电网电压波动抑制[J]. 电工技术学报, 2016, 31(17): 23-31. Zeng Zheng ,Shao Weihua ,Ran Li ,Sun Wentao, Ma Li. DC Electric Spring for Voltage Fluctuation Suppressing of DC Distribution Network. Transactions of China Electrotechnical Society, 2016, 31(17): 23-31.

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https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I17/23

[1] 崔福博,郭剑波,荆平,等.直流配电技术综述[J].电网技术,2014,38(3):556-564.
Cui Fubo,Guo Jianbo,Jing Ping,et al.A review of DC power distribution technology[J].Power System Technology,2014,38(3):556-564.
[2] 李露露,雍静,梁仕斌,等.民用低压直流供电系统保护综述[J].电工技术学报,2015,30(22):133-143.
Li Lulu,Yong Jing,Liang Shibin,et al.A review of civil low voltage DC distribution system protection[J].Transactions of China Electrotechnical Society,2015,30(22):133-143.
[3] 王丹,毛承雄,陆继明,等.直流配电系统技术分析及设计构想[J].电力系统自动化,2013,37(8):82-88.
Wang Dan,Mao Chengxiong,Lu Jiming,et al.Technical analysis and design concept of DC distribution system[J].Automation of Electric Power Systems,2013,37(8):82-88.
[4] 郑欢,江道灼,杜翼.交流配电网与直流配电网的经济性比较[J].电网技术,2013,37(12):3368-3374.
Zheng Huan,Jiang Daozhuo,Du Yi.Economic comparison of AC and DC distribution system.Power System Technology,2013,37(12):3368-3374.
[5] 吴卫民,何远彬,耿攀,等.直流微网研究中的关键技术[J].电工技术学报,2012,27(1):98-106.
Wu Weimin,He Yuanbin,Geng Pan,et al.Key technologies for DC micro-grids[J].Transactions of China Electrotechnical Sosiety,2012,27(1):98-106.
[6] 宋强,赵彪,刘文华,等.智能直流配电网研究综述[J].中国电机工程学报,2013,33(25):9-19.
Song Qiang,Zhao Biao,Liu Wenhua,et al.An Overview of research on smart DC distribution power network[J].Proceedings of the CSEE,2013,33(25):9-19.
[7] Magne P,Nahid-Mobarakeh B,Pierfederici S.Dynamic consideration of DC microgrids with constant power loads and active damping system—A design method for fault-tolerant stabilizing system[J].IEEE Journal of Emerging and Selected Topics in Power Electronics,2014,2(3):562-570.
[8] Sullivan C R,Awerbuch J J,Latham A M.Decrease in photovoltaic power output from ripple:Simple general calculation and the effect of partial shading[J].IEEE Transactions on Power Electronics,2013,28(2):740-747.
[9] Wu J F,Yuan X Z,Martin J J,et al.A review of PEM fuel cell durability:Degra-dation mechanisms and mitigation strategies[J].Journal of Power Sources,2008,184(1):104-119.
[10]Liu C,Lai J S.Low frequency current ripple reduction technique with active control in a fuel cell power system with inverter load[J].IEEE Transactions on Power Electronics,2007,22(4):1429-1436.
[11]张学,裴玮,邓卫,等.多源/多负荷直流微电网的能量管理和协调控制方法[J].中国电机工程学报,2014,34(31):5553-5562.
Zhang Xue,Pei Wei,Deng Wei,et al.Energy management and coordinated control method for multi-source/multi-load DC microgrid[J].Proceedings of the CSEE,2014,34(31):5553-5562.
[12]王毅,张丽荣,李和明,等.风电直流微网的电压分层协调控制[J].中国电机工程学报,2013,33(4):16-24.
Wang Yi,Zhang Lirong,Li Heming,et al.Hierarchical coordinated control of wind turbine-based DC microgrid[J].Proceeding of the CSEE,2013,33(4):16-24.
[13]Nasirian V,Moayedi S,Davoudi A,et al.Distributed cooperative control of DC microgrids[J].IEEE Transactions on Power Electronics,2014,30(4):2288-2303.
[14]Diaz N L,Dragicevic T,Vasquez J C,et al.Intelligent distributed generation and storage units for DC microgrids—A new concept on cooperative control without communications beyond droop control[J].IEEE Transactions on Smart Grid,2014,5(5):2476-2485.
[15]张犁,孙凯,吴田进,等.基于光伏发电的直流微电网能量变换与管理[J].电工技术学报,2013,28(2):248-254.
Zhang Li,Sun Kai,Wu Tianjin,et al.Energy conversion and management for DC microgrid based on photovoltaic generation[J].Transactions of China Electrotechnical Society,2013,28(2):248-254.
[16]Galus M D,Koch S,Andersson G.Provision of load frequency control by PHEVs,controllable loads,and a cogeneration unit[J].IEEE Transactions on Industrial Electronics,2011,58(10):4568-4582.
[17]符杨,蒋一鎏,李振坤,等.计及可平移负荷的微网经济优化调度[J].中国电机工程学报,2014,34(16):2612-2620.
Fu Yang,Jiang Yiliu,Li Zhenkun,et al.Optimal economic dispatch for microgrid considering shiftable loads[J].Proceedings of the CSEE,2014,34(16):2612-2620.
[18]艾欣,赵阅群,周树鹏.适应清洁能源消纳的配电网直接负荷控制模型与仿真[J].中国电机工程学报,2014,34(25):4234-4243.
Ai Xin,Zhao Yuequn,Zhou Shupeng.Direct load control model and simulation for clean energy accommodation in distribution network[J].Proceedings of the CSEE,2014,34(25):4234-4243.
[19]Hui S Y,Lee C K,Wu F F.Electric springs-A new smart grid technology[J].IEEE Transactions on Smart Grid,2012,3(3):1552-1561.
[20]Chi K L,Shu Y H.Reduction of energy storage requirements in future smart grid using electric springs[J].IEEE Transactions on Smart Grid,2013,4(3):1282-1288.
[21]Tan S,Lee C K,Hui S Y.General steady-state analysis and control principle of electric springs with active and reactive power compensations[J].IEEE Transactions on Power Electronics,2013,28(8):3958-3969.
[22]程明,王青松,张建忠.电力弹簧理论分析与控制器设计[J].中国电机工程学报,2015,35(10):2436-2444.
Cheng Ming,Wang Qingsong,Zhang Jianzhong.Theoretical analysis and controller design of electric springs[J].Proceedings of the CSEE,2015,35(10):2436-2444.
[23]Chi K L,Chaudhuri N R,Chaudhuri B,et al.Droop control of distributed electric springs for stabilizing future power grid[J].IEEE Transactions on Smart Grid,2013,4(3):1558-1566.
[24]张国驹,唐西胜,周龙,等.基于互补PWM控制的Buck/Boost双向变换器在超级电容器储能中的应用[J].中国电机工程学报,2011,31(6):15-21.
Zhang Guoju,Tang Xisheng,Zhou Long,et al.Research on complementary PWM controlled Buck/Boost bi-directional converter in supercapacitor energy storage[J].Proceeding of the CSEE,2011,31(6):15-21.
[25]张敬南,张军伟.基于数字控制的双向直流变换装置的设计[J].电力电子技术,2012,46(11):90-92.
Zhang Jingnan,Zhang Junwei.Bi-directional DC/DC converter unit based on digital control[J].Power Electronics,2012,46(11):90-92.
[26]曾正,杨欢,赵荣祥.多功能并网逆变器及其在微电网中的应用[J].电力系统自动化,2012,36(4):28-34.
Zeng Zheng,Yang Huan,Zhao Rongxiang.Multi-functional grid-connected inverter and its application in microgrid[J].Automation of Electric Power Systems,2012,36(4):28-34.