刘垚,裴玮,邓卫,孔力

• 1:中国科学院电工研究所
• 2:中国科学院大学
• 3:中国科学院洁净能源创新研究院

摘要(Abstract)：

多端柔性直流技术是构建未来能源网络的关键技术之一。多端柔性直流系统的传输功率与系统参数间存在复杂的耦合关系。为了研究影响系统功率传输边界的关键因素,通过建立系统小信号模型,采用特征值法对系统振荡模态、灵敏度进行分析计算,分析得出影响多端系统传送功率容量的关键参数及变化规律。最后,利用电磁模型进行仿真验证,结果表明所提方法能够指出造成系统传输功率越界的关键因素,并给出了相应改进设计方案。

关键词(KeyWords)： 多端柔性直流;传输容量;小干扰稳定性;特征值灵敏度

Abstract:

Keywords:

基金项目(Foundation): 国家科技部重点研发专项(2017YFB0903300);; 中国科学院先导A项目(XDA210050000)

作者(Author): 刘垚,裴玮,邓卫,孔力

DOI: 10.19635/j.cnki.csu-epsa.000468

参考文献(References)：

• [1]宋强，赵彪，刘文华，等（Song Qiang,Zhao Biao,Liu Wenhua,et al）.智能直流配电网研究综述（An overview of research on smart DC distribution power network)[J].中国电机工程学报（Proceedings of the CSEE),2013,33(25):9-19.
• [2]汤广福，贺之渊，庞辉（Tang Guangfu,He Zhiyuan,Pang Hui）.柔性直流输电工程技术研究、应用及发展（Research,application and development of VSC-HVDC engineering technology)[J].电力系统自动化（Automation of Electric Power Systems),2013,37(15):3-14.
• [3]江道灼，郑欢（Jiang Daozhuo,Zheng Huan）.直流配电网研究现状与展望（Research status and developing prospect of DC distribution network)[J].电力系统自动化（Automation of Electric Power Systems),2012,36(8):98-104.
• [4]付强，杜文娟，王海风，等（Fu Qiang,Du Wenjuan,Wang Haifeng,et al）.多端柔性直流输电中换流站的同步切换控制策略（Synchronous switching control strategy for VSC station in MTDC network)[J].电网技术（Power System Technology),2018,42(4):1241-1250.
• [5]马为民，吴方劼，杨一鸣，等（Ma Weimin,Wu Fangzhe,Yang Yiming,et al）.柔性直流输电技术的现状及应用前景分析（Flexible HVDC transmission technology’s today and tomorrow)[J].高电压技术（High Voltage Engineering),2014,40(8):2429-2439.
• [6]徐政，陈海荣（Xu Zheng,Chen Hairong）.电压源换流器型直流输电技术综述（Review and applications of VSCHVDC)[J].高电压技术（High Voltage Engineering),2007,33(1):1-10.
• [7]金阳忻（Jin Yangxin）.直流配网电压控制及电压稳定性研究（Voltage Control and Its Stability in DC Distribution)[D].杭州：浙江大学（Hangzhou:Zhejiang University),2016.
• [8]Rahimi A M,Emadi A.Active damping in DC/DC power electronic converters:A novel method to overcome the problems of constant power loads[J].IEEE Trans on Industrial Electronics,2009,56(5):1428-1439.
• [9]Kongpan A,Theppanom S,Serhiy B,et al.Adaptive stabilization of uncontrolled rectifier based AC-DC power systems feeding constant power loads[J].IEEE Trans on Power Electronics,2018,33(10):8927-8935.
• [10]Ali E,Alireza K,Claudio H,et al.Constant power loads and negative impedance instability in automotive systems:definition,modeling,stability,and control of power electronic converters and motor drives[J].IEEE Trans on Vehicular Technology,2006,55(4):1112-1125.
• [11]Lessa Assis T M,Kuenzel S,CHandra Pal B.Impact of multi-terminal HVDC grids on enhancing dynamic power transfer capability[J].IEEE Trans on Power Systems,2017,32(4):2652-2662.
• [12]Pinares G,Bongiorno M.Modeling and analysis of VSC-based HVDC systems for DC network stability studies[J].IEEE Trans on Power Delivery,2016,31(2):848-856.
• [13]唐欣，张凯峰，许强，等（Tang Xin,Zhang Kaifeng,Xu Qiang,et al）.提高VSC-HVDC系统供电无源网络的传输容量的控制方法（Control strategy for enlarging the transmission capacity of VSC-HVDC systems supplying passive networks)[J].电工技术学报（Transactions of China Electrotechnical Society),2016,31(5):44-51.
• [14]Wu Tsai-Fu,Chang Chih-Hao,Lin Lichiun,et al.DC-bus voltage control with a three-phase bidirectional inverter for DC distribution systems[J].IEEE Trans on Power Electronics,2013,28(4):1890-1899.
• [15]刘迎澍，王翠敏（Liu Yingshu,Wang Cuimin）.光储微电网并网模式协调控制策略（Coordinated control strategy for micro-grid with photovoltaic and energy storage units in grid connected operation)[J].电力系统及其自动化学报（Proceedings of the CSU-EPSA),2018,30(1):127-132.
• [16]王锡凡，方万良，杜正春.现代电力系统分析[M].北京：科学出版社，2003.