复线牵引网不断电过分相与电能质量补偿装置研究
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摘要
过分相时的过电压、过电流以及负序电流注入问题,是高速、重载电气化铁路存在的重要问题,严重制约着铁路的可靠运行和电力系统的安全稳定。本文提出一种应用于复线牵引网的电气化铁路不断电过分相与电能质量补偿方案,对该方案的系统构成、运行原理、控制策略进行了研究。按照每个方向是否有机车过分相进行组合设计了典型工况,并利用PSCAD软件对典型工况下方案的补偿效果进行了仿真。结果表明,所提出的方案能够使两个方向的机车同时不断电过分相,或者一个方向机车不断电过分相的同时整个牵引变电站的电能质量最优。
Overvoltage and overcurrent problems during passing phase-separation and negative sequence current penetration problem are the critical problems in high speed,heavy duty electrified railways,which greatly constrants the safe operation of railway and safety and stability of power system. A novel uninterruptible phase-separation passing and power quality compensation scheme for double-line traction network is proposed in this paper. System configuration,working principle and control strategies are studied. Typical operating modes are designed with the composition of the condition that whether there is locomotive passing neutral section and simulations under various operation modes are carried out in PSCAD. Results show that the proposed scheme can help locomotives from two elirections passing phase-separation without loss of power simultaneously one locomotive passing neutral section to ensure optimal power quality.
Overvoltage and overcurrent problems during passing phase-separation and negative sequence current penetration problem are the critical problems in high speed,heavy duty electrified railways,which greatly constrants the safe operation of railway and safety and stability of power system. A novel uninterruptible phase-separation passing and power quality compensation scheme for double-line traction network is proposed in this paper. System configuration,working principle and control strategies are studied. Typical operating modes are designed with the composition of the condition that whether there is locomotive passing neutral section and simulations under various operation modes are carried out in PSCAD. Results show that the proposed scheme can help locomotives from two elirections passing phase-separation without loss of power simultaneously one locomotive passing neutral section to ensure optimal power quality.
引文
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[15]马伏军,罗安,徐先勇,等.大功率混合型电气化铁路功率补偿装置[J].电工技术学报,2011,26(10):93-102.Ma Fujun,Luo An,Xu Xianyong,et al.High-power hybrid power quality compensation system in electrified railway[J].Transactions of China Electrotechnical Society,2011,26(10):93-102.
[2]敖晓峰,刘仕兵.车载断电自动过分相装置[J].电气化铁道,2006,1(2):5-10.Ao Xiaofeng,Liu Shibing.Automatic conversion system for locomotive[J].Electric Railway,2006,1(2):5-10.
[3]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):152-155.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):152-155.
[4]李红梅.高速铁路动车组过电分相的列控分闸区系统技术探讨[J].铁道标准设计,2010,54(1):182-183.Li Hongmei.Discussion on system technology of electric locomotives passing phase separation in high speed railways[J].Railway Standard Design,2010,54(1):182-183.
[5]冯大立.郑西高速铁路自动过分相技术对动车组车载设备的影响分析[J].铁路技术创新,2011(1):97-98.Feng Dali.Impact analysis on electric locomotive equipments of automatic passing phase-separation scheme in Zhengxi high speed railway[J].Railway Technical Innovation,2011(1):97-98.
[6]陈伟伟,樊艳芳,李凤婷.电气化铁路对新疆哈密电网的影响[J].电源技术,2014,38(10):1910-1912.Chen Weiwei,Fan Yanfang,Li Fengting.Influence of electrified railway on xinjiang hami power grid[J].Chinese Journal of Power Sources,2014,38(10):1910-1912.
[7]刘育权,吴国沛,华煌圣,等.高速铁路牵引负荷对电力系统的影响研究[J].电力系统保护与控制,2011,39(18):150-154.Liu Yuquan,Wu Guopei,Hua Huangsheng,et al.Research on the effects of high-speed railway traction load on the power system[J].Power System Protection and Control,2011,39(18):150-154.
[8]邹大云,李群湛,黄昌萍,等.三绕组变压器详细模型推导及电铁负序、谐波渗透计算[J].电力系统保护与控制,2011,39(21):17-21.Zou Dayun,Li Qunzhan,Huang Changping,et al.Derivation of detailed models of three-winding transformers and negative sequence and harmonic penetration calculation of electrified railway[J].Power System Protection and Control,2011,39(21):17-21.
[9]魏晓娟,王洪涛,吴羽生.开关并联电阻地面自动过分相方案研究[J].电气化铁道,2011,22(1):5-8.Wei Xiao Juan,Wang Hongtao,Wu Yusheng.Study of scheme for ground automatic passing over of articulated phase insulator with parallel resistance[J].Electric Railway,2011,22(1):5-8.
[10]刘冰,冉旺,李雄,等.电子开关实现带电自动过分相的研究[J].电力电子,2011,11(3):26-29.Liu Bing,Ran Wang,Li Xiong,et al.Research on power electronic switch used in the auto-passing neutral section with electric load[J].Power Electronics,2011,11(3):26-29.
[11]董志杰.地面自动过分相技术及方案研究[D].成都:西南交通大学,2004.
[12]王术合.高速动车组不断电自动过分相的研究[D].北京:北京交通大学,2012.
[13]施大发,吴传平.基于两相三线制变流器的高速铁路负序和谐波综合补偿新方法[J].电工技术学报,2012,27(7):257-266.Shi Dafa,Wu Chuanping.A novel integrated compensation method of negative sequence and harmonic for high-speed railway based on two-phase three-wire converter[J].Transactions of China Electrotechnical Society,2012,27(7):257-266.
[14]吴传平,罗安,孙娟,等.一种电气化铁路电能质量综合补偿系统[J].电工技术学报,2011,26(10):68-76.Wu Chuanping,Luo An,Sun Juan,et al.A power quality integrated compensation system for electric railway[J].Transactions of China Electrotechnical Society,2011,26(10):68-76.
[15]马伏军,罗安,徐先勇,等.大功率混合型电气化铁路功率补偿装置[J].电工技术学报,2011,26(10):93-102.Ma Fujun,Luo An,Xu Xianyong,et al.High-power hybrid power quality compensation system in electrified railway[J].Transactions of China Electrotechnical Society,2011,26(10):93-102.