基于一体化检测系统的10 kV变台无功补偿电容器组动态投切性能检测
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摘要
针对10 kV变压器台区(简称变台)无功补偿电容器组动态投切一体化检测的关键技术问题,从配电一二次设备现场验证需求出发,基于自主设计研发的10 kV变台动态负载试验系统,对容量400kVA变台中配置的无功补偿电容器响应时间、涌流等关键参数进行了试验检测,总结分析目前变台在实际运行中无功补偿电容器组投切遇到的问题,结果表明了选择合理的投切逻辑是降低投切响应时间的有效方法,并对变台产品在投切电容器时设置延迟时间的合理性问题提出讨论,对指导一体化变台优化设计以及今后在配电网中的应用具有重要作用。
Aiming at the key technical problems of dynamic switching performance detection of reactive power compensation capacitor bank in 10 kV transformer,starting from the on-site verification requirements of power distribution primary and secondary equipment,based on the dynamic load test system of 10 kV column transformer which is independently designed and developed,it tests the key parameters such as response time and inrush current of reactive power compensation capacitor bank in 400 kVA transformer.It summarizes and analyzes the actual problems encountered in the dynamic switching performance of reactive power compensation capacitor.The results show that the selection of reasonable switching logic is the right way to reduce the response time.It also discusses the rationality of setting the delay time on column transformer when switching the capacitor.It plays an important role in guiding the optimization of integrated platform design and in the application of distribution networks in the future.
Aiming at the key technical problems of dynamic switching performance detection of reactive power compensation capacitor bank in 10 kV transformer,starting from the on-site verification requirements of power distribution primary and secondary equipment,based on the dynamic load test system of 10 kV column transformer which is independently designed and developed,it tests the key parameters such as response time and inrush current of reactive power compensation capacitor bank in 400 kVA transformer.It summarizes and analyzes the actual problems encountered in the dynamic switching performance of reactive power compensation capacitor.The results show that the selection of reasonable switching logic is the right way to reduce the response time.It also discusses the rationality of setting the delay time on column transformer when switching the capacitor.It plays an important role in guiding the optimization of integrated platform design and in the application of distribution networks in the future.
引文
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[17]曹先平,刘波,陈轩恕,等.选相精度对容性关合涌流幅值影响的数值仿真分析[J].高压电器,2016,52(2):160-165.CAO Xianping,LIU Bo,CHEN Xuanshu,et al.Numerical simulation analysis of the impact of phase-control accuracy to capacitive closing inrush current magnitude[J].High Voltage Apparatus,2016,52(2):160-165.
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[19]徐建源,庚振新,杨志勇,等.采用相控关合技术限制背靠背换流站涌流的仿真研究[J].电网技术,2009,33(18):44-49.XU Jianyuan,GENG Zhenxin,YANG Zhiyong,et al.Simulative research on restricting inrush current of back-to-back converter station by controled switching[J].Power System Technology,2009,33(18):44-49.
[20]毛磊,刘旭,颜玮,等.10 kV并联电容器组的跳闸分析与计算[J].电力电容器与无功补偿,2018,39(2):49-53,71.MAO Lei,LIU Xu,YAN Wei,et al.Trip analysis and calculation on 10 k V shunt capacitor bank[J].Power Capacitor&Reactive Power Compensation,2018,39(2):49-53,71.
[2]李彦.配电网节能潜力挖掘与供电质量提升措施研究[D].青岛:青岛大学,2017.
[3]孙大璟,秦晓东,吴敏秀.标准配送式一体化配电台区设备研究与应用[J].供用电,2017,34(7):79-84.SUN Dajing,QIN Xiaodong,WU Minxiu.Study and application of devices of standard distribution-based integrated distribution area[J].Distribution&Utilization,2017,34(7):79-84.
[4]林莘.现代高压电器技术[M].2版.北京:机械工业出版社,2011:23-34.
[5]李勇,程汉湘,方伟明,等.无功补偿装置在电力系统的应用综述[J].广东电力,2016,29(5):77-81.LI Yong,CHENG Hanxiang,FANG Weiming,et al.Review on application of reactive power compensation device in power system[J].Guangdong Electric Power,2016,29(5):77-81.
[6]李冬辉,周大钧,王伟.电动汽车对配电网的无功补偿方法[J].电力系统及其自动化学报,2017,29(8):76-81.LIDonghui,ZHOUDajun,WANGWei.Reactivepower compensation method for distribution network from electric vehicles[J].Proceedings of the CSU-EPSA,2017,29(8):76-81.
[7]汪龙龙,张兆君,张鹏,等.变电站内无功设备容量配置方法研究[J].智慧电力,2018,46(1):51-56.WANG Longlong,ZHANG Zhaojun,ZHANG Peng,et al.Configuration method of reactive power capacity in substation[J].Smart Power,2018,46(1):51-56.
[8]李培,赵越.组合式一体化配电台区的特点及其应用[J].供用电,2016,33(12):34-37.LI Pei,ZHAO Yue.The characteristics and application of combined integrated distribution network[J].Distribution&Utilization,2016,33(12):34-37.
[9]金立军,安世超,廖黎明,等.国内外无功补偿研发现状与发展趋势[J].高压电器,2008,44(5):463-465.JIN Lijun,AN Shichao,LIAO Liming,et al.Present situation and development of reactive power compensation both at home and abroad[J].High Voltage Apparatus,2008,44(5):463-465.
[10]范广伟,樊楚夫,李刚,等.12kV真空断路器开合无功补偿回路的过电压分析[J].高压电器,2017,53(6):135-140.FAN Guangwei,FAN Chufu,LI Gang,et al.Overvoltage analysis of 12 k V vacuum circuit breaker switching reactive power compensation circuit[J].High Voltage Apparatus,2017,53(6):135-140.
[11]林莘,王飞鸣,刘卫东,等.高压SF6断路器关合预击穿特性计算与试验研究[J].中国电机工程学报,2016,36(5):1445-1452.LIN Xin,WANG Feiming,LIU Weidong,et al.Research on calculations and experiments of closing pre-strike characteristics in high voltage SF6 circuit breakers[J].Proceedings of the CSEE,2016,36(5):1445-1452.
[12]何俊正,申凌云,李静,等.静止无功补偿装置在35kV配电系统中的应用[J].高压电器,2008,44(4):350-352.HE Junzheng,SHEN Lingyun,LI Jing,et al.Application of static var compensator in 35 k V power distribution system[J].High Voltage Apparatus,2008,44(4):350-352.
[13]周恒逸,齐飞,毛柳明,等.基于SVG调节配变三相不平衡电流的应用研究[J].高压电器,2016,52(5):48-53.ZHOU Hengyi,QI Fei,MAO Liuming,et al.Application research on regulating distribution transformer three-phase unbalanced current based on SVG[J].High Voltage Apparatus,2016,52(5):48-53.
[14]陶文娟,钟俊,黄宏光.电力系统无功补偿点的选取及优化方法[J].电力电容器与无功补偿,2018,39(3):116-121.TAO Wenjuan,ZHONG Jun,HUANG Hongguang.Selecting and optimization method of reactive power compensation node in power system[J].Power Capacitor&Reactive Power Compensation,2018,39(3):116-121.
[15]蒋正华,刘俊勇,许立雄,等.基于无功补偿约束区间的变电站电容器优化分组方法[J].电力电容器与无功补偿,2018,39(2):72-77,89.JIANG Zhenghua,LIU Junyong,XU Lixiong,et al.Optimization grouping method on substation capacitor based on reactive power compensation constraint intervals[J].Power Capacitor&Reactive Power Compensation,2018,39(2):72-77,89.
[16]彭洁锋,程汉湘,陈杏灿.不对称负载下电容器组投切的冲击涌流分析[J].电力电容器与无功补偿,2017,38(4):99-103,109.PENG Jiefeng,CHENG Hanxiang,CHEN Xingcan.Analysis on inrush current of capacitor bank switching under asymmetrical load[J].Power Capacitor&Reactive Power Compensation,2017,38(4):99-103,109.
[17]曹先平,刘波,陈轩恕,等.选相精度对容性关合涌流幅值影响的数值仿真分析[J].高压电器,2016,52(2):160-165.CAO Xianping,LIU Bo,CHEN Xuanshu,et al.Numerical simulation analysis of the impact of phase-control accuracy to capacitive closing inrush current magnitude[J].High Voltage Apparatus,2016,52(2):160-165.
[18]杨汾艳,朱韬析,丁晓兵,等.考虑涌流影响的直流线路50 Hz分量机理性研究[J].高电压技术,2015,41(10):3363-3371.YANG Fenyan,ZHU Taoxi,DING Xiaobing,et al.Research on 50 Hz component in HVDC transmission lines considering the influence of inrush current[J].High Voltage Engineering,2015,41(10):3363-3371.
[19]徐建源,庚振新,杨志勇,等.采用相控关合技术限制背靠背换流站涌流的仿真研究[J].电网技术,2009,33(18):44-49.XU Jianyuan,GENG Zhenxin,YANG Zhiyong,et al.Simulative research on restricting inrush current of back-to-back converter station by controled switching[J].Power System Technology,2009,33(18):44-49.
[20]毛磊,刘旭,颜玮,等.10 kV并联电容器组的跳闸分析与计算[J].电力电容器与无功补偿,2018,39(2):49-53,71.MAO Lei,LIU Xu,YAN Wei,et al.Trip analysis and calculation on 10 k V shunt capacitor bank[J].Power Capacitor&Reactive Power Compensation,2018,39(2):49-53,71.