一种基于单母线分段的变压器风冷控制系统设计
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摘要
针对典型的变压器风冷控制系统因单母主接线方式的不足,在母线故障时供电母线失压导致变压器风冷全停的情况,提出了一种基于单母线分段接线的变压器风冷控制系统。通过对该变压器风冷控制系统进行故障类型与运行方式分析,提出了相应的自动控制与继电保护配置方案。该方案在变压器风冷控制系统发生母线故障时,可以通过相应的继电保护和备自投动作,准确定位并隔离故障点,避免造成风冷全停的严重事故。试验验证了该方案对保证变压器风冷系统正常运行的有效性。
This paper proposes a transformer air-cooling control system based on sectionalized single bus scheme, in consideration of the shortage of single bus scheme in typical transformer air-cooling system and the failure scenarios of air-cooling full stop caused by voltage loss of power supply when bus fault occurs. By analyzing the fault types and operation modes of this transformer air-cooling control system, the corresponding configuration schemes of automatic control and relay protection are proposed. When bus fault occurs in transformer air-cooling system, this scheme can locate and isolate the fault point accurately by relay protection and standby power supply automatic switching action, and avoid serious accidents caused by air-cooling system full stop. The test proves the validity of the solution to ensure the normal operation of the transformer air-cooling system.
This paper proposes a transformer air-cooling control system based on sectionalized single bus scheme, in consideration of the shortage of single bus scheme in typical transformer air-cooling system and the failure scenarios of air-cooling full stop caused by voltage loss of power supply when bus fault occurs. By analyzing the fault types and operation modes of this transformer air-cooling control system, the corresponding configuration schemes of automatic control and relay protection are proposed. When bus fault occurs in transformer air-cooling system, this scheme can locate and isolate the fault point accurately by relay protection and standby power supply automatic switching action, and avoid serious accidents caused by air-cooling system full stop. The test proves the validity of the solution to ensure the normal operation of the transformer air-cooling system.
引文
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[17]邹德虎,徐希,闪鑫,等.基于集中校核与分散控制的备自投系统[J].电力系统保护与控制,2017,45(21):140-146.ZOU Dehu,XU Xi,SHAN Xin,et al.Centralized checking and decentralized control automatic switching system[J].Power System Protection and Control,2017,45(21):140-146.
[18]郭亮,李升健,范瑞祥,等.配网线路开关分级保护配置研究[J].电力系统保护与控制,2018,46(16):155-164.GUO Liang,LI Shengjian,FAN Ruixiang,et al.Research on hierarchical protection configuration of distribution line switch[J].Power System Protection and Control,2018,46(16):155-164.
[19]马小珍.一种改进的备自投逻辑[J].电力系统保护与控制,2010,38(8):149-151.MA Xiaozhen.An improved switching logic of auto-close scheme[J].Power System Protection and Control,2010,38(8):149-151.
[20]刘洋,吴水兰,朱若松,等.一种基于功率方向的智能变电站中低压母线保护方案[J].电力系统保护与控制,2018,46(4):114-118.LIU Yang,WU Shuilan,ZHU Ruosong,et al.A scheme of mid-low voltage busbar protection based on power direction in intelligent substation[J].Power System Protection and Control,2018,46(4):114-118.
[2]刘志远,于晓军,邹洪森,等.基于大规模信号采集的全新智能风冷控制方法[J].电网与清洁能源,2016,32(10):99-103.LIU Zhiyuan,YU Xiaojun,ZOU Hongsen,et al.A new intelligent air cooling control method based on large scale signal acquisition[J].Power System and Clean Energy,2016,32(10):99-103.
[3]刘志远,于晓军,梁守硕,等.一种变压器风冷控制系统多机保护定值整定方案[J].电力系统保护与控制,2016,44(19):133-137.LIU Zhiyuan,YU Xiaojun,LIANG Shoushuo,et al.Asetting calculation scheme for multi-motors relay in transformer air cooling control system[J].Power System Protection and Control,2016,44(19):133-137.
[4]康真,张梅.一种新型变压器风冷控制系统的设计[J].电网与清洁能源,2010,26(10):23-25.KANG Zhen,ZHANG Mei.A new design of transformer air-cooled control system[J].Power System and Clean Energy,2010,26(10):23-25.
[5]马江涛,刘勇.强迫油循环风冷变压器冷却器电源切换控制回路改进[J].变压器,2010,47(2):34-36.MA Jiangtao,LIU Yong.Improvement of power source switch and control circuit of cooler in forced-oil and forced-air cooling transformer[J].Transformer,2010,47(2):34-36.
[6]肖磊磊,林永宏,查光年.换流变压器冷却系统电源自动切换回路分析[J].南方电网技术,2012,6(2):47-50.XIAO Leilei,LIN Yonghong,ZHA Guangnian.Analysis of automatic power switching loop of converter transformer cooling system[J].Southern Power System Technology,2012,6(2):47-50.
[7]胡晓静,李志勇,杨慧霞,等.换流站站用电备自投装置设计及整定[J].电力系统保护与控制,2015,43(17):145-148.HU Xiaojing,LI Zhiyong,YANG Huixia,et al.Standby power supply automatic switching-on relay design and setting of converter station auxiliary power system[J].Power System Protection and Control,2015,43(17):145-148.
[8]高中德,舒治淮,王德林,等.国家电网公司继电保护培训教材[M].北京:中国电力出版社,2009.
[9]张丰,郭碧媛.备自投装置在单母分段接线中应用存在的问题及解决措施[J].电力系统保护与控制,2011,39(7):133-135.ZHANG Feng,GUO Biyuan.The problem existing in automatic close-up device of stand-by power supply used in sectionalized single bus scheme and its solving measures[J].Power System Protection and Control,2011,39(7):133-135.
[10]郭碧媛,张丰.110 k V扩大内桥接线备自投逻辑分析[J].电力系统保护与控制,2010,38(7):124-128.GUO Biyuan,ZHANG Feng.Analysis of logic conditions of back-up switching equipment in 110 kV enlarging internal bridge main connection[J].Power System Protection and Control,2010,38(7):124-128.
[11]苏宜强,孔璐,伏祥运,等.单母线分段接线中备用电源自动投入装置的改进[J].电力系统自动化,2012,36(22):120-122.SU Yiqiang,KONG Lu,FU Xiangyun,et al.Improvement of automatic transfer switch for backup power supply used in sectionalized single-bus configuration[J].Automation of Electric Power Systems,2012,36(22):120-122.
[12]王莉,张予鄂,王娟,等.电网中备用电源自投装置的安全应用[J].电力系统保护与控制,2010,38(20):225-231.WANG Li,ZHANG Yu’e,WANG Juan,et al.Safe application of auto-switch-on device of stand-by power supply[J].Power System Protection and Control,2010,38(20):225-231.
[13]赵家庆,霍雪松,钱科军,等.基于功率负荷自适应的备自投实现方法[J].江苏电机工程,2013,32(3):50-53.ZHAO Jiaqing,HUO Xuesong,QIAN Kejun,et al.AMethod of automatic switchover device based on selfadaptive electrical load[J].Jiangsu Electrical Engineering,2013,32(3):50-53.
[14]杨启洪,赵伟杰,陈善文,等.备自投装置动作引起过负荷的解决方案[J].电力系统保护与控制,2015,43(12):145-149.YANG Qihong,ZHAO Weijie,CHEN Shanwen,et al.Solution to overload caused by automatic bus transfer device action[J].Power System Protection and Control,2015,43(12):145-149.
[15]梅华,付连元.主接线方式与备自投的选型及使用问题[J].电力系统保护与控制,2009,37(21):138-140.MEI Hua,FU Lianyuan.Application of automatic backup power system varying with main wiring diagram[J].Power System Protection and Control,2009,37(21):138-140.
[16]孙建华,李国友,姚捷.自适应式备用电源自投装置的研究[J].电力系统保护与控制,2010,38(4):88-90.SUN Jianhua,LI Guoyou,YAO Jie.Research on the adaptive backup power switchover unit[J].Power System Protection and Control,2010,38(4):88-90.
[17]邹德虎,徐希,闪鑫,等.基于集中校核与分散控制的备自投系统[J].电力系统保护与控制,2017,45(21):140-146.ZOU Dehu,XU Xi,SHAN Xin,et al.Centralized checking and decentralized control automatic switching system[J].Power System Protection and Control,2017,45(21):140-146.
[18]郭亮,李升健,范瑞祥,等.配网线路开关分级保护配置研究[J].电力系统保护与控制,2018,46(16):155-164.GUO Liang,LI Shengjian,FAN Ruixiang,et al.Research on hierarchical protection configuration of distribution line switch[J].Power System Protection and Control,2018,46(16):155-164.
[19]马小珍.一种改进的备自投逻辑[J].电力系统保护与控制,2010,38(8):149-151.MA Xiaozhen.An improved switching logic of auto-close scheme[J].Power System Protection and Control,2010,38(8):149-151.
[20]刘洋,吴水兰,朱若松,等.一种基于功率方向的智能变电站中低压母线保护方案[J].电力系统保护与控制,2018,46(4):114-118.LIU Yang,WU Shuilan,ZHU Ruosong,et al.A scheme of mid-low voltage busbar protection based on power direction in intelligent substation[J].Power System Protection and Control,2018,46(4):114-118.
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