一种非全容量不断电过分相装置控制策略研究
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摘要
电气化铁道牵引区段一般采用分段换相供电方式,为防止相间短路必须在各独立供电区之间建立分相区,称为电分相。为了解决传统过分相方案中变流器容量大、成本高,电力机车存在供电死区及不具备负序与无功电流补偿能力的问题,该文提出一种新型柔性不断电过分相方案。通过改变中性段变流器输出电压,使中性段电压可在两个供电臂之间柔性过渡,消除机车的供电死区,实现电力机车不断电过分相。此外,所提出的方案中性段采用逆变器与变压器串联的方式供电,可降低变流器容量,在一定程度上减小系统成本,同时中性段变流器整流侧采用三相拓扑,还可对移相过程中网侧存在的负序电流和无功电流进行部分补偿,不需要投切开关就可工作在铁路功率调节器模式。最后,通过原理样机平台对提出控制策略的可行性与有效性进行实验验证。
Electric railway normally adopts phase rotation power supply mode. To prevent short circuit between phases, a neutral section must be set between different feeding section. In order to reduce the capacity of neutral section converter,eliminate power supply dead zone of electric locomotives,compensate negative sequence and reactive current and solve other typical problems in traditional neutral section passing scheme, a novel flexible phase passing equipment was proposed in this paper. By adjusting the output voltage of neutral section converter, the neutral section voltage can shift flexibly from one feeding section to another and power supply dead zone can be eliminated which makes locomotives be able to pass the neutral section without power off. In addition, the neutral section is supplied by series connected inverter and transformer, which has benefits to reduce capacity and cost of the neutral section converter. Furthermore, the rectifier side of the converter adopts three-phase topology to provide negative sequence and reactive current compensation capability. This equipment can be operated as a railway power connector without switch motion. Finally, experiments were carried out to prove the effectiveness and feasibility of the proposed control strategy.
Electric railway normally adopts phase rotation power supply mode. To prevent short circuit between phases, a neutral section must be set between different feeding section. In order to reduce the capacity of neutral section converter,eliminate power supply dead zone of electric locomotives,compensate negative sequence and reactive current and solve other typical problems in traditional neutral section passing scheme, a novel flexible phase passing equipment was proposed in this paper. By adjusting the output voltage of neutral section converter, the neutral section voltage can shift flexibly from one feeding section to another and power supply dead zone can be eliminated which makes locomotives be able to pass the neutral section without power off. In addition, the neutral section is supplied by series connected inverter and transformer, which has benefits to reduce capacity and cost of the neutral section converter. Furthermore, the rectifier side of the converter adopts three-phase topology to provide negative sequence and reactive current compensation capability. This equipment can be operated as a railway power connector without switch motion. Finally, experiments were carried out to prove the effectiveness and feasibility of the proposed control strategy.
引文
[1]李群湛.牵引变电所供电分析及综合补偿技术[M].北京:中国铁道出版社,2006.Li Qunzhan.Power supply analysis and comprehensive compensation technology for the traction substation[M].Beijing:China Railway Publishing House,2006(in Chinese).
[2]李群湛,贺建闽,解绍锋.电气化铁路电能质量分析与控制[M].成都:西南交通大学出版社,2011:51-62.Li Qunzhan,He Jianmin,Xie Shaofeng.Analysis and control of power quality of the electrified railway[M].Chengdu:Southwest Jiao Tong University Press,2011:51-62(in Chinese).
[3]李群湛.论新一代牵引供电系统及其关键技术[J].西南交通大学学报,2014,49(4):559-568.Li Qunzhan.On new generation traction power supply system and its key technologies for electrification railway[J].Journal of Southwest Jiaotong University,2014,49(4):559-568(in Chinese).
[4]温建民,王帮田,方志国.高速铁路地面自动过分相系统的研究与运用[J].铁道标准设计,2011(4):104-108.Wen Jianmin,Wang Bangtian,Fang Zhiguo.Studies and applications of ground auto-passing neutral section separation system for high speed railway[J].Railway Standard Design,2011(4):104-108(in Chinese).
[5]冉旺,李雄,刘冰,等.地面自动过分相中开关切换的瞬态过程研究[J].电工技术学报,2011,26(11):150-154.Ran Wang,Li Xiong,Liu Bing,et al.Research on transient process of ground’s auto-passing neutral section at switching time[J]Transactions of China Electrotechnical Society,2011,26(11):150-154(in Chinese).
[6]孙万启,单圣熊,郑国藩.国内外自动过分相装置的比较[J].电气化铁道,2002(2):12-16.Sun Wanqi,Shan Shengxiong,Zheng Guopan.Comparison between home and aboad of automatic passing over of neutral section device[J].Electric Raileay,2002(2):12-16(in Chinese).
[7]Chen Dixiang,Pan Mengchun,Tian Wugang,et al.Automatic neutral section passing control device based on image recognition for electric locomotives[C]//2010 IEEEInternational Conference on Imaging Systems and Techniques.Thessaloniki,Greece:IEEE,2010:385-388.
[8]Wang Qian,Lu Jun,Wang Qingfeng,et al.Transient overvoltage study of auto-passing neutral section in high-speed railway[C]//2017 IEEE Transportation Electrification Conference and Expo,Asia-Pacific(ITECAsia-Pacific).Harbin:IEEE,2017:1-5.
[9]Chen Yi,Li Hong,Ma Lingzhi.Research on electric locomotive auto-passing neutral section[C]//2013 Fourth International Conference on Intelligent Systems Design and Engineering Applications.Zhangjiajie:IEEE,2013:463-467.
[10]Chen Minwu,Wen Tao,Jiang Wenbin,et al.Modelling and simulation of new traction power supply system in electrified railway[C]//2015 IEEE 18th International Conference on Intelligent Transportation Systems.Las Palmas,Spain:IEEE,2015:1345-1350.
[11]Du Yuliang,Zheng T Q,Ran Wang,et al.Research on uninterrupted power supply technology for auxiliary winding of electric locomotive when passing neutral section[C]//2015 IEEE Applied Power Electronics Conference and Exposition(APEC).Charlotte,NC,USA:IEEE,2015:3089-3093.
[12]Ran Wang,Zheng T Q,Li Xionget al.Research on power electronic switch system used in the auto-passing neutral section with electric load[C]//2011 International Conference on Electrical Machines and Systems.Beijing:IEEE,2011:1-4.
[13]田旭,姜齐荣,魏应冬.基于两相式模块化多电平变流器的电气化铁路不断电过分相装置拓扑研究[J].电网技术,2015,39(10):2901-2906.Tian Xu,Jiang Qirong,Wei Yingdong.Two-phase modular multilevel converter topology study of railway uninterruptible phase-separation passing device[J].Power System Technology,2015,39(10):2901-2906(in Chinese).
[14]田旭,姜齐荣,魏应冬.电气化铁路无断电过分相方案研究[J].电力系统保护与控制,2012,40(21):14-18.Tian Xu,Jiang Qirong,Wei Yingdong.Research on novel uninterruptible phase-separation passing sheme in electrified railways[J].Power System Protection and Control,2012,40(21):14-18(in Chinese).
[15]Tian Xu,Jiang Qirong,Wei Yingdong.Research on novel railway uninterruptible flexible connector with series-connected transformers and back-to-back converter[C]//2013 IEEE ECCE Asia Downunder.Melbourne,VIC,Australia:IEEE,2013:111-116.
[16]Luo An,Xu Qianming,Ma Fujun,et al.Overview of power quality analysis and control technology for the smart grid[J].Journal of Modern Power Systems and Clean Energy,2016,4(1):1-9.
[17]Ramya G,Ganapathy V,Suresh P.Power quality improvement using multi-level inverter based DVR and DSTATCOM using neuro-fuzzy controller[J].International Journal of Power Electronics and Drive Systems,2017,8(1):316-324.
[18]Hosseini S H,Sarhangzadeh M,Shahnia F.A novel control scheme of the statcom for power quality improvement in electrified railways[C]//2006 37th IEEEPower Electronics Specialists Conference.Jeju,South Korea:IEEE,2017:1-5.
[2]李群湛,贺建闽,解绍锋.电气化铁路电能质量分析与控制[M].成都:西南交通大学出版社,2011:51-62.Li Qunzhan,He Jianmin,Xie Shaofeng.Analysis and control of power quality of the electrified railway[M].Chengdu:Southwest Jiao Tong University Press,2011:51-62(in Chinese).
[3]李群湛.论新一代牵引供电系统及其关键技术[J].西南交通大学学报,2014,49(4):559-568.Li Qunzhan.On new generation traction power supply system and its key technologies for electrification railway[J].Journal of Southwest Jiaotong University,2014,49(4):559-568(in Chinese).
[4]温建民,王帮田,方志国.高速铁路地面自动过分相系统的研究与运用[J].铁道标准设计,2011(4):104-108.Wen Jianmin,Wang Bangtian,Fang Zhiguo.Studies and applications of ground auto-passing neutral section separation system for high speed railway[J].Railway Standard Design,2011(4):104-108(in Chinese).
[5]冉旺,李雄,刘冰,等.地面自动过分相中开关切换的瞬态过程研究[J].电工技术学报,2011,26(11):150-154.Ran Wang,Li Xiong,Liu Bing,et al.Research on transient process of ground’s auto-passing neutral section at switching time[J]Transactions of China Electrotechnical Society,2011,26(11):150-154(in Chinese).
[6]孙万启,单圣熊,郑国藩.国内外自动过分相装置的比较[J].电气化铁道,2002(2):12-16.Sun Wanqi,Shan Shengxiong,Zheng Guopan.Comparison between home and aboad of automatic passing over of neutral section device[J].Electric Raileay,2002(2):12-16(in Chinese).
[7]Chen Dixiang,Pan Mengchun,Tian Wugang,et al.Automatic neutral section passing control device based on image recognition for electric locomotives[C]//2010 IEEEInternational Conference on Imaging Systems and Techniques.Thessaloniki,Greece:IEEE,2010:385-388.
[8]Wang Qian,Lu Jun,Wang Qingfeng,et al.Transient overvoltage study of auto-passing neutral section in high-speed railway[C]//2017 IEEE Transportation Electrification Conference and Expo,Asia-Pacific(ITECAsia-Pacific).Harbin:IEEE,2017:1-5.
[9]Chen Yi,Li Hong,Ma Lingzhi.Research on electric locomotive auto-passing neutral section[C]//2013 Fourth International Conference on Intelligent Systems Design and Engineering Applications.Zhangjiajie:IEEE,2013:463-467.
[10]Chen Minwu,Wen Tao,Jiang Wenbin,et al.Modelling and simulation of new traction power supply system in electrified railway[C]//2015 IEEE 18th International Conference on Intelligent Transportation Systems.Las Palmas,Spain:IEEE,2015:1345-1350.
[11]Du Yuliang,Zheng T Q,Ran Wang,et al.Research on uninterrupted power supply technology for auxiliary winding of electric locomotive when passing neutral section[C]//2015 IEEE Applied Power Electronics Conference and Exposition(APEC).Charlotte,NC,USA:IEEE,2015:3089-3093.
[12]Ran Wang,Zheng T Q,Li Xionget al.Research on power electronic switch system used in the auto-passing neutral section with electric load[C]//2011 International Conference on Electrical Machines and Systems.Beijing:IEEE,2011:1-4.
[13]田旭,姜齐荣,魏应冬.基于两相式模块化多电平变流器的电气化铁路不断电过分相装置拓扑研究[J].电网技术,2015,39(10):2901-2906.Tian Xu,Jiang Qirong,Wei Yingdong.Two-phase modular multilevel converter topology study of railway uninterruptible phase-separation passing device[J].Power System Technology,2015,39(10):2901-2906(in Chinese).
[14]田旭,姜齐荣,魏应冬.电气化铁路无断电过分相方案研究[J].电力系统保护与控制,2012,40(21):14-18.Tian Xu,Jiang Qirong,Wei Yingdong.Research on novel uninterruptible phase-separation passing sheme in electrified railways[J].Power System Protection and Control,2012,40(21):14-18(in Chinese).
[15]Tian Xu,Jiang Qirong,Wei Yingdong.Research on novel railway uninterruptible flexible connector with series-connected transformers and back-to-back converter[C]//2013 IEEE ECCE Asia Downunder.Melbourne,VIC,Australia:IEEE,2013:111-116.
[16]Luo An,Xu Qianming,Ma Fujun,et al.Overview of power quality analysis and control technology for the smart grid[J].Journal of Modern Power Systems and Clean Energy,2016,4(1):1-9.
[17]Ramya G,Ganapathy V,Suresh P.Power quality improvement using multi-level inverter based DVR and DSTATCOM using neuro-fuzzy controller[J].International Journal of Power Electronics and Drive Systems,2017,8(1):316-324.
[18]Hosseini S H,Sarhangzadeh M,Shahnia F.A novel control scheme of the statcom for power quality improvement in electrified railways[C]//2006 37th IEEEPower Electronics Specialists Conference.Jeju,South Korea:IEEE,2017:1-5.