一种基于部分Hausdorff距离的励磁涌流识别新方法
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摘要
变电站的电磁环境较为复杂,二次设备可能受到电磁干扰等不利因素影响而产生异常数据,进而导致保护误动。传统的变压器励磁涌流识别方法并没有考虑到异常数据干扰对保护的影响。分析异常数据对不同识别方法造成的影响,可以得知现有的励磁涌流识别方法在保护用数据受到异常干扰时,可能会导致保护动作速度变慢甚至保护误动。为解决这一问题,提出了一种基于波形相似度识别的励磁涌流快速识别方法,通过对比差动电流和正弦信号的波形相似度以区分励磁涌流和故障电流。仿真结果表明,该方法能够快速有效识别励磁涌流,在一定程度上能够不受异常数据的影响。
The electromagnetic environment of the substation is more complex, secondary equipment may be affected by electromagnetic interference and other factors, which will produce false data and thus lead to protection misoperation. However, conventional methods of transformer inrush current identification do not take into account the influence of false data interference on protection. By analyzing the influence of false data on different methods, it can be concluded that existing methods may slow-operate even mal-operate. To solve this problem, a new magnetizing inrush identification method based on similarity identification is proposed. The magnetizing inrush current and fault current are identified by comparing the waveform similarity between the detected current and the sinusoidal signal. Simulation results show that this method can identify inrush current quickly and effectively, and it can not be affected by false data to a certain degree.
The electromagnetic environment of the substation is more complex, secondary equipment may be affected by electromagnetic interference and other factors, which will produce false data and thus lead to protection misoperation. However, conventional methods of transformer inrush current identification do not take into account the influence of false data interference on protection. By analyzing the influence of false data on different methods, it can be concluded that existing methods may slow-operate even mal-operate. To solve this problem, a new magnetizing inrush identification method based on similarity identification is proposed. The magnetizing inrush current and fault current are identified by comparing the waveform similarity between the detected current and the sinusoidal signal. Simulation results show that this method can identify inrush current quickly and effectively, and it can not be affected by false data to a certain degree.
引文
[1]IEC.(2005).Communication networks and systems in substations:IEC standard 61850[EB/OL].http://www.iec.ch.
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[8]黄少锋,李珊珊,肖远清.基于非周期分量衰减速率的变压器励磁涌流鉴别方法[J].电力系统保护与控制,2018,46(15):9-15.HUANG Shaofeng,LI Shanshan,XIAO Yuanqing.A novel identification criterion for transformer inrush current based on decay rate of aperiodic component[J].Power System Protection and Control,2018,46(16):9-15.
[9]焦在滨,行武,王钊,等.变压器励磁涌流负序二次谐波特征及机理[J].电力系统自动化,2015,39(11):146-151.JIAO Zaibin,XING Wu,WANG Zhao,et al.Features and mechanism of negative-sequence second harmonics of magnetizing inrush current in transformers[J].Automation of Electric Power Systems,2015,39(11):146-151.
[10]冯存亮,毕大强,葛宝明.基于时差法的牵引变压器和应涌流识别[J].电力系统自动化,2012,36(21):66-72.FENG Cunliang,BI Daqiang,GE Baoming.Sympathetic inrush identification for traction transformer based on time differential method[J].Automation of Electric Power Systems,2012,36(21):66-72.
[11]曾湘,林湘宁,翁汉琍,等.基于相电压和差流时差特征的变压器保护新判据[J].电力系统自动化,2009,33(3):79-83.ZENG Xiang,LIN Xiangning,WENG Hanli,et al.Novel criterion of transformer protection based on time difference characteristic between phase voltage and differential current[J].Automation of Electric Power Systems,2009,33(3):79-83.
[12]谷君,郑涛,肖仕武,等.基于时差法的Y/△接线变压器和应涌流鉴别新方法[J].中国电机工程学报,2007,27(13):6-11.GU Jun,ZHENG Tao,XIAO Shiwu,et al.A new algorithm based on time differential method to identify sympathetic inrush of transformers connected in Wye-delta mode[J].Proceedings of the CSEE,2007,27(13):6-11.
[13]谭明,罗建,余高旺,等.基于故障分量的牵引变压器和应涌流识别方法[J].电力系统保护与控制,2012,40(11):87-92.TAN Ming,LUO Jian,YU Gaowang,et al.An algorithm based on the fault component to identify traction transformer sympathetic inrush[J].Power System Protection and Control,2012,40(11):87-92.
[14]孙庆森,张海峰,王猛,等.小波算法在变压器励磁涌流中的应用研究[J].电力系统保护与控制,2017,45(8):121-125.SUN Qingsen,ZHANG Haifeng,WANG Meng,et al.Application of wavelet algorithm in the transformer inrush current[J].Power System Protection and Control,2017,45(8):121-125.
[15]张炳达,黄杰.基于差分双正交小波熵的变压器励磁涌流识别算法[J].电力系统保护与控制,2014,42(18):9-13.ZHANG Bingda,HUANG Jie.Identification of transformer inrush current based on difference biorthogonal wavelet entropy[J].Power System Protection and Control,2014,42(18):9-13.
[16]徐岩,马静,王增平.利用数学形态学提取暂态量的变压器保护新原理[J].中国电机工程学报,2006,26(6):98-105.XU Yan,MA Jing,WANG Zengping.Power transformer protection based on transient data using mathematical morphology[J].Proceedings of the CSEE,2006,26(6):98-105.
[17]黄家栋,罗伟强.采用改进数学形态学识别变压器励磁涌流的新方法[J].中国电机工程学报,2009,29(7):98-105.HUANG Jiadong,LUO Weiqiang.New algorithm to identify inrush current based on improved mathematical morphology[J].Proceedings of the CSEE,2009,29(7):98-105.
[18]姚东晓,张凯,贺要锋,等.变压器多特征励磁涌流识别方案研究[J].电力系统保护与控制,2017,45(13):149-154.YAO Dongxiao,ZHANG Kai,HE Yaofeng,et al.Research on multi feature recognition scheme of transformer inrush current[J].Power System Protection and Control,2017,45(13):149-154.
[19]SUN Z,CHEN Y.Transformer differential protection based on the characteristic analysis of the first and second half cycle of the magnetizing in-rush current[J].Automation of Electric Power Systems,1996,20(4):42-46.
[20]WU Y H,DONG X Z,MIRSAEIDI S.Modeling and simulation of air-gapped current transformer based on Preisach theory[J].Protection and Control of Modern Power Systems,2017,2(2):111-121.DOI:10.1186/s41601-017-0046-0.
[21]LIN X,WENG H,LIU P,et al.Analysis of a sort of unusual mal-operation of transformer differential protection due to removal of external fault[J].IEEETransactions on Power Delivery,2008,23(3):1374-1379.
[2]CLAVEL F,SAVARY E,ANGAYS P,et al.Integration of a new standard:a network simulator of IEC 61850architectures for electrical substations[J].IEEE Industry Applications Magazine,2015,21(1):41-48.
[3]常风然,赵自刚,周纪录,等.微机保护采样数据异常问题的分析与对策[J].电力系统保护与控制,2005,33(1):77-79.CHANG Fengran,ZHAO Zigang,ZHOU Jilu,et al.Analysis and countermeasures of problems about unusual sampling data in microprocessor-based protection[J].Power System Protection and Control,2005,33(1):77-79.
[4]LE-LE L I,XIE Z Y,NA L I.Research on antiinterference for secondary equipments in substations[J].Electrical Measurement&Instrumentation,2008,2(1):37-40.
[5]姚东晓,邓茂军,倪传坤,等.变压器多侧励磁涌流产生机理及对差动快速动作区影响研究[J].电力系统保护与控制,2016,44(5):36-41.YAO Dongxiao,DENG Maojun,NI Chuankun,et al.Transformer's multi-side inrush current generation mechanism and its influence on the differential protection's fast action zone[J].Power System Protection and Control,2016,44(5):36-41.
[6]袁宇波,陆于平,李澄,等.三相涌流波形特征分析及差动保护中采用二次谐波相位制动的原理[J].中国电机工程学报,2006,26(19):23-28.YUAN Yubo,LU Yuping,LI Cheng,et al.The characteristic analysis of three phase transformer inrush and the discussion of second harmonic restrained method using phase angle and amplitude[J].Proceedings of the CSEE,2006,26(19):23-28.
[7]袁宇波,陆于平,李澄,等.基于附加相位判别的自适应二次谐波励磁涌流制动方案研究[J].中国电机工程学报,2006,26(18):19-24.YUAN Yubo,LU Yuping,LI Cheng,et al.An adaptive second harmonic restrained method using phase angle and amplitude for inrush detection[J].Proceedings of the CSEE,2006,26(18):19-24.
[8]黄少锋,李珊珊,肖远清.基于非周期分量衰减速率的变压器励磁涌流鉴别方法[J].电力系统保护与控制,2018,46(15):9-15.HUANG Shaofeng,LI Shanshan,XIAO Yuanqing.A novel identification criterion for transformer inrush current based on decay rate of aperiodic component[J].Power System Protection and Control,2018,46(16):9-15.
[9]焦在滨,行武,王钊,等.变压器励磁涌流负序二次谐波特征及机理[J].电力系统自动化,2015,39(11):146-151.JIAO Zaibin,XING Wu,WANG Zhao,et al.Features and mechanism of negative-sequence second harmonics of magnetizing inrush current in transformers[J].Automation of Electric Power Systems,2015,39(11):146-151.
[10]冯存亮,毕大强,葛宝明.基于时差法的牵引变压器和应涌流识别[J].电力系统自动化,2012,36(21):66-72.FENG Cunliang,BI Daqiang,GE Baoming.Sympathetic inrush identification for traction transformer based on time differential method[J].Automation of Electric Power Systems,2012,36(21):66-72.
[11]曾湘,林湘宁,翁汉琍,等.基于相电压和差流时差特征的变压器保护新判据[J].电力系统自动化,2009,33(3):79-83.ZENG Xiang,LIN Xiangning,WENG Hanli,et al.Novel criterion of transformer protection based on time difference characteristic between phase voltage and differential current[J].Automation of Electric Power Systems,2009,33(3):79-83.
[12]谷君,郑涛,肖仕武,等.基于时差法的Y/△接线变压器和应涌流鉴别新方法[J].中国电机工程学报,2007,27(13):6-11.GU Jun,ZHENG Tao,XIAO Shiwu,et al.A new algorithm based on time differential method to identify sympathetic inrush of transformers connected in Wye-delta mode[J].Proceedings of the CSEE,2007,27(13):6-11.
[13]谭明,罗建,余高旺,等.基于故障分量的牵引变压器和应涌流识别方法[J].电力系统保护与控制,2012,40(11):87-92.TAN Ming,LUO Jian,YU Gaowang,et al.An algorithm based on the fault component to identify traction transformer sympathetic inrush[J].Power System Protection and Control,2012,40(11):87-92.
[14]孙庆森,张海峰,王猛,等.小波算法在变压器励磁涌流中的应用研究[J].电力系统保护与控制,2017,45(8):121-125.SUN Qingsen,ZHANG Haifeng,WANG Meng,et al.Application of wavelet algorithm in the transformer inrush current[J].Power System Protection and Control,2017,45(8):121-125.
[15]张炳达,黄杰.基于差分双正交小波熵的变压器励磁涌流识别算法[J].电力系统保护与控制,2014,42(18):9-13.ZHANG Bingda,HUANG Jie.Identification of transformer inrush current based on difference biorthogonal wavelet entropy[J].Power System Protection and Control,2014,42(18):9-13.
[16]徐岩,马静,王增平.利用数学形态学提取暂态量的变压器保护新原理[J].中国电机工程学报,2006,26(6):98-105.XU Yan,MA Jing,WANG Zengping.Power transformer protection based on transient data using mathematical morphology[J].Proceedings of the CSEE,2006,26(6):98-105.
[17]黄家栋,罗伟强.采用改进数学形态学识别变压器励磁涌流的新方法[J].中国电机工程学报,2009,29(7):98-105.HUANG Jiadong,LUO Weiqiang.New algorithm to identify inrush current based on improved mathematical morphology[J].Proceedings of the CSEE,2009,29(7):98-105.
[18]姚东晓,张凯,贺要锋,等.变压器多特征励磁涌流识别方案研究[J].电力系统保护与控制,2017,45(13):149-154.YAO Dongxiao,ZHANG Kai,HE Yaofeng,et al.Research on multi feature recognition scheme of transformer inrush current[J].Power System Protection and Control,2017,45(13):149-154.
[19]SUN Z,CHEN Y.Transformer differential protection based on the characteristic analysis of the first and second half cycle of the magnetizing in-rush current[J].Automation of Electric Power Systems,1996,20(4):42-46.
[20]WU Y H,DONG X Z,MIRSAEIDI S.Modeling and simulation of air-gapped current transformer based on Preisach theory[J].Protection and Control of Modern Power Systems,2017,2(2):111-121.DOI:10.1186/s41601-017-0046-0.
[21]LIN X,WENG H,LIU P,et al.Analysis of a sort of unusual mal-operation of transformer differential protection due to removal of external fault[J].IEEETransactions on Power Delivery,2008,23(3):1374-1379.
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