MMC-HVDC向无源网络供电的停机策略A Shutdown Control Strategy of Modular Multilevel Converter Based HVDC Transmission System Supplying Power for Passive Network
宋平岗;李云丰;王立娜;江浪;段程亭;
摘要(Abstract):
修正了能馈阶段直流参考电压下降时的最低值,计算了系统整体停机时间,推导了能耗阶段内能耗电阻选取的表达式。在能馈阶段,考虑桥臂冗余子模块在内,将投入模块数和直流电压协调配合,提出了一种新的停机策略。该策略不仅可以最大程度地将电容中的储存能量反馈至电网,而且大大降低了能耗电阻的耐压等级和功率等级,同时电容电压可以精确地控制在安全电压以下,并且停机速度更快。最后,在Matlab中搭建了基于MMC-HVDC向无源网络供电的仿真系统,仿真结果表明了所提停机策略的有效性。
关键词(KeyWords): 模块化多电平换流器;柔性直流输电;无源网络;停机策略;能耗电阻
基金项目(Foundation): 国家自然科学基金项目(51367008)~~
作者(Author): 宋平岗;李云丰;王立娜;江浪;段程亭;
Email:
DOI: 10.13335/j.1000-3673.pst.2013.11.040
参考文献(References):
- [1]Lesnicar A,Marquardt R.An innovative modular multilevel converter topology suitable for a wide power range[C]//IEEE Power Technology Conference.Bologna,Italy:Institute of Electrical and Electronics Engineers,2003:6.
- [2]Marquardt R.Modular multilevel converter:an universal concept for HVDC networks and extended DC-bus-applications[C]//International Power Electronics Conference(IPEC).Sapporo Japan:Institute of Electrical and Electronics Engineers,2010:502-507.
- [3]Rohner S,Bernet S,Hiller M,et al.Analysis and simulation of a 6kV,6 MVA modular multilevel converter[C]//35th Annual Conference of IEEE on Industrial Electronics.Porto Portugal:Institute of Electrical and Electronics Engineers,2009:225-230.
- [4]赵岩,胡学浩,汤广福,等.含模块化多电平换流器的分布式发电系统动态特性分析[J].电网技术,2011,35(7):42-47.Zhao Yan,Hu Xuehao,Tang Guangfu,et al.Dynamic characteristic analysis of distributed generation system based on modular multilevel converters[J].Power System Technology,2011,35(7):42-47(in Chinese).
- [5]汤广福.基于电压源换流器的高压直流输电技术[M].北京:中国电力出版社,2009:21-25.
- [6]王姗姗,周孝信,汤广福,等.交流电网强度对模块化多电平换流器HVDC运行特性的影响[J].电网技术,2011,35(2):17-24.Wang Shanshan,Zhou Xiaoxin,Tang Guangfu,et al.Influence of AC system strength on operating characteristics of MMC-HVDC system[J].Power System Technology,2011,35(2):17-24(in Chinese).
- [7]韦延方,卫志农,孙国强,等.适用于电压源换流器型高压直流输电的模块化多电平换流器最新研究进展[J].高电压技术,2012,38(5):1243-1252.Wei Yanfang,Wei Zhinong,Sun Guoqiang,et al.New prospects of modular multilevel converter applied to voltage source converter high voltage current transmission[J].High Voltage Engineering,2012,38(5):1243-1252(in Chinese).
- [8]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 on the circulating current in modular multilevel converter based HVDC[J].High Voltage Engineering,2010,36(2):547-552(in Chinese).
- [9]王国强,王志新,李爽.模块化多电平换流器的直接功率控制仿真研究[J].中国电机工程学报,2012,32(6):64-71.Wang Guoqiang,Wang Zhixin,Li Shuang.Simulation research on direct power control of modular multilevel converters[J].Proceedings of the CSEE,2012,32(6):64-71(in Chinese).
- [10]王珊珊,周孝信,汤广福,等.模块化多电平换流器HVDC直流双极短路子模块过流分析[J].中国电机工程学报,2011,31(1):1-7.Wang Shanshan,Zhou Xiaoxin,Tang Guangfu,et al.Analysi of submodule overcurrent caused by DC pole-to-pole fault in modular multilevel converter HVDC system[J].Proceedings of the CSEE,2011,31(1):1-7(in Chinese).
- [11]李萼青,季舒平,赵岩,等.柔性直流系统启动即试验分析[J].华东电力,2011,35(7):1144-1147.Li Eqing,Ji Shuping,Zhao Yan,et al.Flexible HVDC system starting and its testing analysis[J].East China Electric Power,2011,35(7):1144-1147(in Chinese).
- [12]孔明,邱宇峰,贺之渊,等.模块化多电平式柔性直流输电换流器的预充电控制策略[J].电网技术,2011,35(11):67-73.Kong Ming,Qiu Yufeng,He Zhiyuan,et al.Pre-charging control strategies of modular multilevel converter for VSC-HVDC[J].Power System Technology,2011,35(11):67-73(in Chinese).
- [13]周月宾,江道灼,郭捷,等.模块化多电平换流器型直流输电系统的启停控制[J].电网技术,2012,36(7):204-209.Zhou Yuebin,Jiang Daozhuo,Guo Jie,et al.Start/stop control of modular multilevel converter based HVDC transmission system[J].Power System Technology,2012,36(7):204-209(in Chinese).
- [14]许建中,赵成勇.模块化多电平换流器电容电压优化平衡控制算法[J].电网技术,2012,36(6):256-261.Xu Jianzhong,Zhao Chengyong.An optimized capacitance voltage balancing algorithm for modularized multilevel converter[J].Power System Technology,2012,36(6):256-261(in Chinese).
- [15]Hagiwara M,Akagi H.Control and experiment of pulse width-modulated modular multilevel converters[J].IEEE Transactions on Power Electronics,2009,24(7):1737-1745.
- [16]Rohner S,Bernet S,Hiller M,et al.Modulation,losses,and semiconductor requirements of modular multilevel converters[J].IEEE Transaction on Power Electronics,2010,57(8),2633-2641.
- [17]Li Z X,Wang P,Zhu H B,et al.An improved pulse width modulation method for chopper-cell-based modular multilevel converters[J].IEEE Transaction on Power Electronics,2012,27(8):3472-3481.
- [18]管敏渊,徐政,潘伟勇,等.最近电平逼近调制的基波谐波特性解析计算[J].高电压技术,2010,36(5):1327-1332.Guan Minyuan,Xu Zheng,Pan Weiyong,et al.Analytical calculation of fundamental wave and harmonic characteristics for nearest level modulation[J].High Voltage Engineering,2010,36(5):1327-1332(in Chinese).
- [19]王姗姗,周孝信,汤广福,等.模块化多电平电压源换流器的数学模型[J].中国电机工程学报,2011,31(24):1-8.Wang Shanshan,Zhou Xiaoxin,Tang Guangfu,et al.Modeling of modular multilevel voltage source converter[J].Proceedings of the CSEE,2011,31(24):1-8(in Chinese)
- [20]宋平岗,李云丰,王立娜,等.基于改进阶梯波调制的模块化多电平换流器环流抑制策略[J].电网技术,2013,37(4):1012-1018.Song Pinggang,Li Yunfeng,Wang Lina,et al.A modified ladder wave modulation-based circulating current suppressing strategy for modular multilevel converter[J].Power System Technology,2013,37(4):1012-1018(in Chinese).
- [21]陈海荣,徐政.基于同步坐标变换的VSC-HVDC暂态模型及其控制器[J].电工技术学报,2007,22(2):121-126.Chen Hairong,Xu Zheng.Transient model and controller design for VSC-HVDC based on synchronous reference frame[J].Transactions of China Electrotechnical Society,2007,22(2):121-126(in Chinese).
- [22]王珊珊.模块化多电平VSC-HVDC系统主电路参数选择的理论和方法[D].北京:中国电力科学院研究院,2011.