短路故障相控限流策略及效果分析
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摘要
针对故障限流器换流过程的过电压暂态冲击问题,提出短路故障相控限流策略,为此,在阐述短路故障相控限流策略原理的基础上,对关键技术——短路电流快速辨识算法进行仿真和比较分析。优选基于改进递推最小二乘法(recursive least square, RLS),并对其性能进行了仿真分析;对短路故障相控限流(controlled fault current limiting,CFL)方式和直接故障限流(directly fault current limiting,DFL)方式的燃弧时间、电弧能量及换流时间进行对比、仿真分析。所得结果表明CFL方式相对于DFL方式,燃弧时间短,电弧能量低,能够减小触头烧蚀,更有利于限流器换流使用。
Aiming at the problem of overvoltage transient impulse in the process of commutation of the fault current limiter, the paper proposes a phase-controlled current limiting strategy for short circuit fault. On the basis of stating strategy principle, it makes simulation and comparative analysis for the key technology called the fast identification algorithm for short circuit current. It gives preference to the adaptive recursive least square(RLS) algorithm and makes analysis for the performance. Meanwhile, it compares and analyzes arc time, are energy and commutation time of the controlled fault current limiting(CFL) mode and the directly fault current limiting(DFL) mode. The results obtained indicate compared to the DFL mode, arc time of the CFL is shorter and arc energy is lower, which means this mode can reduce contact ablation and is more beneficial for the current limiter.
Aiming at the problem of overvoltage transient impulse in the process of commutation of the fault current limiter, the paper proposes a phase-controlled current limiting strategy for short circuit fault. On the basis of stating strategy principle, it makes simulation and comparative analysis for the key technology called the fast identification algorithm for short circuit current. It gives preference to the adaptive recursive least square(RLS) algorithm and makes analysis for the performance. Meanwhile, it compares and analyzes arc time, are energy and commutation time of the controlled fault current limiting(CFL) mode and the directly fault current limiting(DFL) mode. The results obtained indicate compared to the DFL mode, arc time of the CFL is shorter and arc energy is lower, which means this mode can reduce contact ablation and is more beneficial for the current limiter.
引文
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[20] 黄智慧,段雄英,邹积岩,等.基于改进RLS算法的故障电流参数估计[J].中国电机工程学报,2014,34(15),2460-2469.HUANG Zhihui,DUAN Xiongying,ZOU Jiyan,et al.Fault current parameter estimation based on adaptive RLS algorithm[J].Proceedings of the CSEE,2014,34(15),2460-2469.
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[2] 孙树敏,刘洪顺,李庆民,等.电力系统故障限流器研究综述[J].电网技术,2008,32(21):75-79.SUN Shumin,LIU Hongshun,LI Qingmin,et al.A summarization of research on fault current limiter of power system[J].Power System Technology,2008,32(21):75-79.
[3] FAJONI F,RUPPERT E,BALDAN C,et al.Study of superconducting fault current limiter using saturated magnetic core [J].Journal of Superconductivity and Novel Magnetism,2015,28(2):685-690.
[4] 周兴梅,杨明昆,黑颖顿,等.紧耦合饱和铁芯型限流器特性研究[J].云南电力技术,2017,45(3):59-62.ZHOU Xingmei,YANG Mingkun,HEI Yingdun,et al.Study on characteristics of strong coupling saturating iron fault current limiter[J].Yunnan Electric Power,2017,45(3):59-62.
[5] 王勇,苏海博,刘俊翔,等.252 kV/85 kA并联开断装置开断过程仿真与击穿特性评估[J].广东电力,2018,31(8):104-110.WANG Yong,SU Haibo,LIU Junxiang,et al.Simulation study and breakdown characteristics assessment on breaking process of 252 kV/85 kA paralleled short-circuit current breaking device[J].Guangdong Electric Power,2018,31(8):104-110.
[6] 郄朝辉,朱炳铨,崔晓丹,等.磁元件型故障限流器电网接入技术研究[J].浙江电力,2018,37(11):10-15.QIE Zhaohui,ZHU Bingquan,CUI Xiaodan,et al.Research on power grid access technology for magnetic element type fault current limiter[J].Zhejiang Electric Power,2018,37(11):10-15.
[7] CHOI H,JUNG B,CHOI H.Analysis of the operation characteristics of the flux offset-type fault current limiter for reinforcing the safety of an electric system [J].Journal of Superconductivity and Novel Magnetism,2015,28(2):645-649.
[8] RADMANESH H,FATHI S H,GHAREHPETIAN G B,et al.Bridge-type solid-state fault current limiter based on AC/DC reactor [J].IEEE Transactions on Power Delivery,2016,31(1):200-209.
[9] SWAGATA D,SURYA S,ANISH G,et al.Impedance-based fault location in transmission networks:theory and application [J].IEEE Access,2014(2):537-557.
[10] 艾绍贵,高峰,黄永宁,等.断路器型零损耗故障限流装置的研制及试验[J].南方电网技术,2015,9(4):103-108.AI Shaogui,GAO Feng,HUANG Yongning,et al.Development and experiment of breaker-type zero-loss fault current limiter[J].Southern Power System Technology,2015,9(4):103-108.
[11] 艾绍贵,高峰,黄永宁,等.330 kV开关型零损耗故障限流装置的研制及人工短路试验[J].智能电网,2015,3(4):354-359.AI Shaogui,GAO Feng,HUANG Yongning,et al.Development and short-circuit experiment of 330 kV switch-type no-loss fault current limiter[J].Smart Grid,2015,3(4):354-359.
[12] 杨昌兴,赵启承,王明毫.并联电容器装置设计及应用若干议题(续)[J].电力电容器与无功补偿,2017(1):1-8.YANG Changxing,ZHAO Qicheng,WANG Minghao.Several issues on design and application of shunt capacitor devices(continued)[J].Power Capacitor & Reactive Power Compensation,2017(1):1-8.
[13] YAMAGUCHIH,KATAOKA T.Effect of magnetic saturation on current limiting characteristics of transformer type superconducting fault current limiter[J].IEEE Trans.on Applied Superconductivity,2006,16(2):691-694.
[14] POLTL A,FROHLICH K.A new algorithm enabling controlled short circuit interruption [J].IEEE Trans.on Power Delivery,2003,18(3):802-808.
[15] 方春恩,段雄英,邹积岩.基于自适应神经元的短路电流参数提取[J].中国电机工程学报,2003,23(8):115-118.FANGChun’en,DUAN Xiongying,ZOU Jiyan.Detection parameters of short-circuit currents based on adaptive neurons [J].Proceedings of the CSEE,2003,23(8):115-118.
[16] RICHARDT.Controlled switching of high voltage SF6 circuit breakers for fault interruption [D].G?teborg Sweden:Department of Electric Power Engineering,Chalmers University of Technology,2004.
[17] 方春恩,林蔓,李伟,等.基于WLMS算法的高压断路器可控开断故障电流研究[J].高压电器,2009,45(6):40-43.FANG Chun’en,LIN Man,LI Wei,et al.Investigation on controlled fault current interruption of high voltage circuit breaker based on WLMS algorithm [J].High Voltage Apparatus,2009,45(6):40-43.
[18] 诸佳云.傅氏算法在电力系统继电保护中的应用[J].电工电气,2009(12):28-30.ZHU Jiayun.Application of fourier algorithm in power system relay protection [J].Electrotechnics Electric,2009 (12):28-30.
[19] 周美兰,王一磊,王健.改进傅氏算法在输电线路微机保护中的应用研究[J].黑龙江大学自然科学学报,2010,27(6):783-787.ZHOU Meilan,WANG Yilei,WANG Jian.Research on the algorithm of the improved fourier in transmission line computer-based protection relay[J].Journal of Natural Science of Heilongjiang University,2010,27(6):783-787.
[20] 黄智慧,段雄英,邹积岩,等.基于改进RLS算法的故障电流参数估计[J].中国电机工程学报,2014,34(15),2460-2469.HUANG Zhihui,DUAN Xiongying,ZOU Jiyan,et al.Fault current parameter estimation based on adaptive RLS algorithm[J].Proceedings of the CSEE,2014,34(15),2460-2469.
[21] 黄智慧,张冬波,邹积岩,等.基于改进RLS算法的短路电流相控开断控制系统设计[J].高电压技术,2016,42(10),3214-3220.HUANG Zhihui,ZHANG Dongbo,ZOU Jiyan,et al.Design of control system for controlled fault interruption based on Adaptive RLS Algorithm[J].High Voltage Engineering,2016,42(10),3214-3220.