混合MMC电磁暂态高效建模和阀段故障特性分析
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摘要
由半桥子模块(half bridge submodule,HBSM)和全桥子模块(full bridge Submodule,FBSM)组成的混合型模块化多电平换流器(modular multilevel converter,MMC)具有经济性高,能快速清除直流短路故障,故障恢复能力强等特点,非常适用于大容量输电系统。然而,如果仅利用详细模型进行仿真,计算效率难以满足科研需求。因此,针对混合型MMC,对半桥和全桥子模块分别进行了提速等效建模,在提速的同时不丢失子模块的任何信息,是一种精确的等效模型。等效建模后半桥子模块和全桥子模块具有同样的电路形式,可以根据需要灵活调整混合MMC中半全子模块比例。使用一种复杂度较低的混合型MMC排序算法,能大大减少快速排序对计算器的要求,提高仿真速度。在PSCAD/EMTDC中搭建了基于半桥子模块、全桥子模块和半桥与全桥子模块混合连接的三种MMC模型,对模型的精度进行了验证。利用验证正确的模型,进行了阀段故障仿真。
The hybrid MMC composed of half bridge submodule( HBSM) and full bridge submodule( FBSM) has good economic performance and fault recovery capability,which is applicable to large-capacity transmission systems.However,the computational efficiency of detailed model simulations cannot meet the demands of research. Therefore,this paper established speed-up equivalent models of HBSM and FBSM,which are accurate without losing any information of submodules. HBSM and FBSM share the same circuit form after modeling. The ratio of HBSM or FBSM can be adjusted flexibly according to demand. Meanwhile,a new sorting algorithm with less complexity was adopted,which can speed up the simulation. Then three MMC models based on HBSM,FBSM and both of HBSM and FBSM were established in PSCAD/EMTDC simulation,then the accuracy of all the models was verified. Finally,valve failure simulation was carried out with the validated MMC model.
The hybrid MMC composed of half bridge submodule( HBSM) and full bridge submodule( FBSM) has good economic performance and fault recovery capability,which is applicable to large-capacity transmission systems.However,the computational efficiency of detailed model simulations cannot meet the demands of research. Therefore,this paper established speed-up equivalent models of HBSM and FBSM,which are accurate without losing any information of submodules. HBSM and FBSM share the same circuit form after modeling. The ratio of HBSM or FBSM can be adjusted flexibly according to demand. Meanwhile,a new sorting algorithm with less complexity was adopted,which can speed up the simulation. Then three MMC models based on HBSM,FBSM and both of HBSM and FBSM were established in PSCAD/EMTDC simulation,then the accuracy of all the models was verified. Finally,valve failure simulation was carried out with the validated MMC model.
引文
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[6]鲁晓军,林卫星,向往,等.基于模块化多电平换流器的直流电网小信号建模[J].中国电机工程学报,2018,38(4):1143-1156+1292.LU Xiaojun,LIN Weixing,XIANG Wang,et al. Small signal modeling of MMC-based DC grid[J]. Proceedings of the CSEE,2018,38(4):1143-1156+1292.
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[8]李探.模块化多电平换流器直流输电系统稳定性关键问题研究[D].北京:华北电力大学,2016.LI Tan. Research on key issues of stability of a modular multilever converter based HVDC system[D]. Beijing:North China Electric University,2016.
[9]赵成勇,陈晓芳,曹春刚,等.模块化多点评换流器HVDC直流侧故障控制保护策略[J].电力系统自动化,2013,35(23):82-87.ZHAO Chengyong,CHEN Xiaofang,CAO Chungang,et al. Control and protection strategies for MMC-HVDC under DC faults[J]. Automation of Electric Power System,2013,35(23):82-87.
[10]XUE Y,XU Z. On the Bipolar MMC-HVDC Topology suitable for bulk power overhead line transmission:configuration,control,and DC fault analysis[J]. IEEE Transactions on Power Delivery,2014,29(6):2420-2429.
[11]许建中,李承昱,熊岩,等.模块化多电平换流器高效建模方法研究综述[J].中国电机工程学报,2015,35(13):3381-3392.XU Jianzhong,LI Chengyu,XIONG Yan,et al. A review of efficient modeling methods for modular multilevel converters[J]. Proceedings of the CSEE,2015,35(13):3381-3392.
[12]董毅峰,王彦良,韩佶,等.电力系统高效电磁暂态仿真技术综述[J].中国电机工程学报,2018,38(8):2213-2231+2532.DONG Yifeng,WANG Yanliang,HAN Ji,et al. Review of high efficiency digital electromagnetic transient simulation technology in power system[J]. Proceedings of the CSEE,2018,38(8):2213-2231+2532.
[13]王玉婷,李鹏.基于Pscad/EMTDC自定义建模的MMC电磁暂态仿真技术[J].高压电器,2017,53(10):170-177.WANG Yuting,LI Peng. Technique of electromagnetic transient simulation based on the user-defined model ofPscad/EMTDC for MMC[J]. High Voltage Apparatus.2017,53(10):170-177.
[14]GNANARATHNA U N,GOLE A M,JAYASINGHE R P. Efficient modeling of modular multilevel HVDC converters(MMC)on electromagnetic transient simulation programs[J]. IEEE Transactions on Power Delivery,2011,26(1):316-324.
[15]SAAD H DENNETIRE,MAHSEREDJIAN S,DELARUE J,et al. Modular multilevel converter models for electromagnetic transients[J]. IEEE Transactions on Power Delivery,2014,29(3):1481-1489.
[16]PERALTA J,SAAD H,DENNETIRE S,et al. Detailed and averaged models for a 401-Level MMC-HVDC system[J]. IEEE Transactions on Power Delivery,2012,27(3):1501-1508.
[17]许建中,赵成勇,Gole A M.模块化多电平换流器戴维南等效整体建模方法[J].中国电机工程学报,2015,35(8):1919-1929.XU Jianzhong,ZHAO Chengyong,Gole A M. Research on the Thévenin’ s equivalent based integral modelling method of the modular multilevel converter[J]. Proceedings of the CSEE,2015,35(8):1919-1929.
[18]XU J,DING H,FAN S,et al. Enhanced high-speed electromagnetic transient simulation of MMC-MTdc grid[J]. International Journal of Electrical Power&Energy Systems,2016,(83):7-14.
[19]XU J, ZHAO C. A backward euler method based thévenin equivalent integral model for full-bridge modular multi-level converters[J]. Electric Power Components&Systems,2015,44(3):1-11.
[2]冯谟可,郭裕群,许建中,等.混合型MMC启动策略及全桥子模块数目配置研究[J].华北电力大学学报(自然科学版),2017,44(6):28-35.FENG Moke,GUO Yuqun,XU Jianzhong,et al. startup control strategies of hybrid mmc and configuration of FBSM[J]. Journal of North China Electric Power University(Natural Science Edition), 2017, 44(6):28-35.
[3]GLINKA M,MARQUARDT R. A new AC/AC-multilevel converter family applied to a single-phase converter[C]//Power Electronics and Drive Systems,2003.PEDS 2003. The Fifth International Conference on.IEEE,2003,1:16-23.
[4]TANG G,ZHIYUAN H E,PANG H. R&D and application of voltage sourced converter based high voltage direct current engineering technology in China[J].Journal of Modern Power Systems&Clean Energy,2014,2(1):1-15.
[5]WANG P,ZHANG X P,COVENTRY P F,et al. Control and protection strategy for MMC MTDC system under converter-side AC fault during converter blocking failure[J]. Journal of Modern Power Systems&Clean Energy,2014,2(3):272-281.
[6]鲁晓军,林卫星,向往,等.基于模块化多电平换流器的直流电网小信号建模[J].中国电机工程学报,2018,38(4):1143-1156+1292.LU Xiaojun,LIN Weixing,XIANG Wang,et al. Small signal modeling of MMC-based DC grid[J]. Proceedings of the CSEE,2018,38(4):1143-1156+1292.
[7]沈致远.模块化多电平换流器子模块宽频建模及其瞬态特性研究[D].北京:华北电力大学,2017.SHEN Zhiyuan. Research on wideband modeling and transient characteristics of sub-module in modular multilevel converter[D]. Beijing:North China Electric University,2017.
[8]李探.模块化多电平换流器直流输电系统稳定性关键问题研究[D].北京:华北电力大学,2016.LI Tan. Research on key issues of stability of a modular multilever converter based HVDC system[D]. Beijing:North China Electric University,2016.
[9]赵成勇,陈晓芳,曹春刚,等.模块化多点评换流器HVDC直流侧故障控制保护策略[J].电力系统自动化,2013,35(23):82-87.ZHAO Chengyong,CHEN Xiaofang,CAO Chungang,et al. Control and protection strategies for MMC-HVDC under DC faults[J]. Automation of Electric Power System,2013,35(23):82-87.
[10]XUE Y,XU Z. On the Bipolar MMC-HVDC Topology suitable for bulk power overhead line transmission:configuration,control,and DC fault analysis[J]. IEEE Transactions on Power Delivery,2014,29(6):2420-2429.
[11]许建中,李承昱,熊岩,等.模块化多电平换流器高效建模方法研究综述[J].中国电机工程学报,2015,35(13):3381-3392.XU Jianzhong,LI Chengyu,XIONG Yan,et al. A review of efficient modeling methods for modular multilevel converters[J]. Proceedings of the CSEE,2015,35(13):3381-3392.
[12]董毅峰,王彦良,韩佶,等.电力系统高效电磁暂态仿真技术综述[J].中国电机工程学报,2018,38(8):2213-2231+2532.DONG Yifeng,WANG Yanliang,HAN Ji,et al. Review of high efficiency digital electromagnetic transient simulation technology in power system[J]. Proceedings of the CSEE,2018,38(8):2213-2231+2532.
[13]王玉婷,李鹏.基于Pscad/EMTDC自定义建模的MMC电磁暂态仿真技术[J].高压电器,2017,53(10):170-177.WANG Yuting,LI Peng. Technique of electromagnetic transient simulation based on the user-defined model ofPscad/EMTDC for MMC[J]. High Voltage Apparatus.2017,53(10):170-177.
[14]GNANARATHNA U N,GOLE A M,JAYASINGHE R P. Efficient modeling of modular multilevel HVDC converters(MMC)on electromagnetic transient simulation programs[J]. IEEE Transactions on Power Delivery,2011,26(1):316-324.
[15]SAAD H DENNETIRE,MAHSEREDJIAN S,DELARUE J,et al. Modular multilevel converter models for electromagnetic transients[J]. IEEE Transactions on Power Delivery,2014,29(3):1481-1489.
[16]PERALTA J,SAAD H,DENNETIRE S,et al. Detailed and averaged models for a 401-Level MMC-HVDC system[J]. IEEE Transactions on Power Delivery,2012,27(3):1501-1508.
[17]许建中,赵成勇,Gole A M.模块化多电平换流器戴维南等效整体建模方法[J].中国电机工程学报,2015,35(8):1919-1929.XU Jianzhong,ZHAO Chengyong,Gole A M. Research on the Thévenin’ s equivalent based integral modelling method of the modular multilevel converter[J]. Proceedings of the CSEE,2015,35(8):1919-1929.
[18]XU J,DING H,FAN S,et al. Enhanced high-speed electromagnetic transient simulation of MMC-MTdc grid[J]. International Journal of Electrical Power&Energy Systems,2016,(83):7-14.
[19]XU J, ZHAO C. A backward euler method based thévenin equivalent integral model for full-bridge modular multi-level converters[J]. Electric Power Components&Systems,2015,44(3):1-11.