干式空心电抗器匝间短路故障在线监测技术
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摘要
首先分析了干式空心电抗器匝间短路故障模型,在此基础上提出一种基于功角变化的电抗器匝间绝缘故障在线监测方法,功角测量的精度是实现该方法的关键要素。通过比较快速傅里叶变换法、汉宁窗插值快速傅里叶变换法和汉宁窗插值改进基波相位分离法的误差,分析了频率波动和谐波干扰对功角测量的影响。此外,设计了一种由监测装置、干式空心电抗器智能电子设备(IED)和专家软件组成的电抗器匝间绝缘故障在线监测系统。实验结果表明,汉宁窗插值改进基波相位分离法优于快速傅里叶变换法和汉宁窗插值快速傅里叶变换法,且该监测系统可有效地检测出干式空心电抗器匝间短路故障。
The fault model of the inter-turn short circuit of the dry-type air-core reactor is firstly analyzed in this paper,by which an on-line monitoring method of the reactor inter-turn insulation fault based on the changed power angle is proposed.The accuracy of power angle measurement is vital for diagnosing the reactor inter-turn insulation fault.The influence of the frequency fluctuation and harmonic interference on measuring power angle is analyzed by comparing the errors of fast Fourier transformation(FFT),Hanning windowed interpolation FFT and fundamental harmonic separation algorithm improved by Hanning windowed interpolation.An on-line monitoring system of the reactor inter-turn insulation fault is also designed,which consists of the monitoring device,the intelligent electronic device(IED)of dry-type air-core reactor and the expert software.The experiment results show that the fundamental harmonic separation algorithm improved by Hanning windowed interpolation is superior to FFT and Hanning windowed interpolation FFT,and the inter-turn short circuit of the dry-type air-core reactor can be detected precisely by the on-line monitoring system.
The fault model of the inter-turn short circuit of the dry-type air-core reactor is firstly analyzed in this paper,by which an on-line monitoring method of the reactor inter-turn insulation fault based on the changed power angle is proposed.The accuracy of power angle measurement is vital for diagnosing the reactor inter-turn insulation fault.The influence of the frequency fluctuation and harmonic interference on measuring power angle is analyzed by comparing the errors of fast Fourier transformation(FFT),Hanning windowed interpolation FFT and fundamental harmonic separation algorithm improved by Hanning windowed interpolation.An on-line monitoring system of the reactor inter-turn insulation fault is also designed,which consists of the monitoring device,the intelligent electronic device(IED)of dry-type air-core reactor and the expert software.The experiment results show that the fundamental harmonic separation algorithm improved by Hanning windowed interpolation is superior to FFT and Hanning windowed interpolation FFT,and the inter-turn short circuit of the dry-type air-core reactor can be detected precisely by the on-line monitoring system.
引文
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[12]徐志钮,律方成,李和明.基于3δ滤波的介损角算法[J].高电压技术,2007,33(7):76-78.XU Zhiniu,LFangcheng,LI Heming.Dielectric loss angle algorithm based on 3δfilter[J].High Voltage Engineering,2007,33(7):76-78.
[13]LIU Hao,BI Tianshu,CHANG Xiqiang,et al.Impacts of subsynchronous and supersynchronous frequency components on synchrophasor measurements[J].Journal of Modern Power Systems and Clean Energy,2016,4(3):362-369.
[14]柴旭峥,关根志,文习山,等.tanδ高准确度测量的加权插值FFT算法[J].高电压技术,2003,29(2):32-33.CHAI Xuzheng,GUAN Genzhi,WEN Xishan,et al.The Hanning-windowed interpolated algorithm for dielectric loss measurement with high accuracy[J].High Voltage Engineering,2003,29(2):32-33.
[15]徐志钮,律方成,姚辉,等.改进基波相位分离法在介损角测量中的应用[J].高电压技术,2007,33(5):29-31.XU Zhiniu,LFangcheng,YAO Hui,et al.Application of modified fundamental harmonic separation algorithm in dielectric loss angle measurement[J].High Voltage Engineering,2007,33(5):29-31.
[16]陈锋,赵彦珍,马西奎.基于设计变量重构的干式空心电抗器优化设计方法[J].中国电机工程学报,2009,29(21):99-106.CHEN Feng,ZHAO Yanzhen,MA Xikui.Optimum design of dry-type air-core reactor based on design variable reconstruction[J].Proceedings of the CSEE,2009,29(21):99-106.
[17]郭香福,孟波.空心并联电抗器匝间短路故障电流及其过流保护系统[J].变压器,2008,45(11):20-22.GUO Xiangfu,MENG Bo.Inter-turn short circuit fault current and overcurrent protective system of shunt reactor with air core[J].Transformer,2008,45(11):20-22.
[18]LU Wen,ZHAO Yangdong,LI Weixing,et al.Design and application of microgrid operation control system based on IEC61850[J].Journal of Modern Power Systems and Clean Energy,2014,2(3):256-263.
[19]黄新波.智能变电站原理与应用[M].北京:中国电力出版社,2012.HUANG Xinbo.Principle and application of intelligent substation[M].Beijing:China Electric Power Press,2012.
[20]HUANG Xinbo,LI Hongbo,ZHU Yongcan.A short-term ice accretion forecasting model for transmission lines with modified time series analysis by fireworks algorithm[J].IET Generation Transmission&Distribution,2018,12(5):1074-1080.
[21]HUANG Xinbo,ZHANG Fei,LI Husheng,et al.An online technology for measuring icing shape on conductor based on vision and force sensors[J].IEEE Transactions on Instrumentation and Measurement,2017,66(12):3180-3189.
[22]黄新波,章云,李俊峰.变电站容性设备介损在线监测系统设计[J].高电压技术,2008,34(8):1594-1598.HUANG Xinbo,ZHANG Yun,LI Junfeng.Design of an online monitoring system of dielectric loss in capacitive equipment of substation[J].High Voltage Engineering,2008,34(8):1594-1598.
[23]王楠,律方成,梁英,等.基于高精度DFT的介损数字测量方法[J].高电压技术,2003,29(4):3-5.WANG Nan,LFangcheng,LIANG Ying,et al.Digital measurement of dielectric loss based on high accuracy DFTalgorithm[J].High Voltage Engineering,2003,29(4):3-5.
[24]徐志钮,律方成,赵丽娟.基于加汉宁窗插值的谐波分析法用于介损角测量的分析[J].电力系统自动化,2006,30(2):81-85.XU Zhiniu,LFangcheng,ZHAO Lijuan.Analysis of dielectric loss angle measurement by Hanning windowing interpolation algorithm based on FFT[J].Automation of Electric Power Systems,2006,30(2):81-85.
[25]陈楷,王卉,张承学.介损角测量中非同步采样算法的研究[J].继电器,2004,32(14):5-7.CHEN Kai,WANG Hui,ZHANG Chengxue.Research on dielectric loss angle measurement in the condition of nonsynchronous sampling[J].Relay,2004,32(14):5-7.
[26]唐蕾,陈维荣.畸变电压下单相电路谐波和无功电流综合检测方法[J].电力自动化设备,2009,29(6):44-47.TANG Lei,CHEN Weirong.Harmonic and reactive current detection of single-phase circuit with distorted voltage[J].Electric Power Automation Equipment,2009,29(6):44-47.
[27]徐志钮,律方成.基于改进基波相位分离法的介质损耗角测量[J].电网技术,2006,30(8):41-45.XU Zhiniu,LFangcheng.Dielectric loss angle measurement based on improved fundamental harmonic separation algorithm[J].Power System Technology,2006,30(8):41-45.
[2]黄新波.变电设备在线监测与故障诊断[M].北京:中国电力出版社,2013.HUANG Xinbo.On-line monitoring system and fault diagnosis of substation equipment[M].Beijing:China Electric Power Press,2013.
[3]王梓,刘溟,邹建明,等.基于TVOC检测的干式空心电抗器过热故障诊断方法[J].高电压技术,2017,11(43):3756-3762.WANG Zi,LIU Ming,ZOU Jianming,et al.Diagnostic method of dry-type air-core reactors overheating fault based on monitoring TVOC[J].High Voltage Engineering,2017,11(43):3756-3762.
[4]黄文武,凌云,吴玉坤,等.干式空心电抗器匝间短路故障特性的研究[J].变压器,2017,54(10):14-18.HUANG Wenwu,LING Yun,WU Yukun,et al.Research on inter-turn short circuit fault characteristics of dry-type air-core reactor[J].Transformer,2017,54(10):14-18.
[5]郑涛,赵彦杰,金颖,等.磁控式并联电抗器控制绕组匝间故障分析及保护方案[J].电力系统自动化,2014,38(10):95-99.DOI:10.7500/AEPS20130915006.ZHENG Tao,ZHAO Yanjie,JIN Ying,et al.Analysis on and protective schemes against control winding turn-to-turn fault of magnetic controllable shunt reactors[J].Automation of Electric Power Systems,2014,38(10):95-99.DOI:10.7500/AEPS20130915006.
[6]陈松林,王志鸿,郑玉平,等.新型微机电抗器保护的研制与开发[J].电力系统自动化,2003,27(24):70-73.CHEN Songlin,WANG Zhihong,ZHENG Yuping,et al.Research&development of a new digital shunt reactor protection[J].Automation of Electric Power Systems,2003,27(24):70-73.
[7]毕大强,王祥珩,王维俭.基于测量阻抗变化的并联电抗器小匝间短路保护[J].电力系统自动化,2005,29(3):57-60.BI Daqiang,WANG Xiangheng,WANG Weijian.Measured impedance based shunt reactor protection against small interturn fault[J].Automation of Electric Power Systems,2005,29(3):57-60.
[8]王楠,律方成,李燕青,等.相关函数法计算容性设备介质损失角正切[J].华北电力大学学报(自然科学版),2001,28(3):22-25.WANG Nan,LFangcheng,LI Yanqing,et al.Calculation of tanδbased on correlation function algorithm[J].Journal of North China Electric Power University(Natural Science Edition),2001,28(3):22-25.
[9]徐志钮,律方成,李和明.存在脉冲噪声情况下的介损角算法[J].电力自动化设备,2008,28(2):45-48.XU Zhiniu,LFangcheng,LI Heming.Dielectric loss angle algorithm considering impulsive noise[J].Electric Power Automation Equipment,2008,28(2):45-48.
[10]陈鹏云,贺景亮,赵生和,等.绝缘介质损耗因数在线监测的研究[J].高电压技术,1994,20(4):36-38.CHEN Pengyun,HE Jingliang,ZHAO Shenghe,et al.Astudy of on-line monitoring measurement of tgδ[J].High Voltage Engineering,1994,20(4):36-38.
[11]TAN Tianyuan,CHEN Wenjuan,LIU Kaipei,et al.Harmonic analysis based on time domain mutual-multiplication window[J].Journal of Modern Power Systems and Clean Energy,2016,4(1):47-53.
[12]徐志钮,律方成,李和明.基于3δ滤波的介损角算法[J].高电压技术,2007,33(7):76-78.XU Zhiniu,LFangcheng,LI Heming.Dielectric loss angle algorithm based on 3δfilter[J].High Voltage Engineering,2007,33(7):76-78.
[13]LIU Hao,BI Tianshu,CHANG Xiqiang,et al.Impacts of subsynchronous and supersynchronous frequency components on synchrophasor measurements[J].Journal of Modern Power Systems and Clean Energy,2016,4(3):362-369.
[14]柴旭峥,关根志,文习山,等.tanδ高准确度测量的加权插值FFT算法[J].高电压技术,2003,29(2):32-33.CHAI Xuzheng,GUAN Genzhi,WEN Xishan,et al.The Hanning-windowed interpolated algorithm for dielectric loss measurement with high accuracy[J].High Voltage Engineering,2003,29(2):32-33.
[15]徐志钮,律方成,姚辉,等.改进基波相位分离法在介损角测量中的应用[J].高电压技术,2007,33(5):29-31.XU Zhiniu,LFangcheng,YAO Hui,et al.Application of modified fundamental harmonic separation algorithm in dielectric loss angle measurement[J].High Voltage Engineering,2007,33(5):29-31.
[16]陈锋,赵彦珍,马西奎.基于设计变量重构的干式空心电抗器优化设计方法[J].中国电机工程学报,2009,29(21):99-106.CHEN Feng,ZHAO Yanzhen,MA Xikui.Optimum design of dry-type air-core reactor based on design variable reconstruction[J].Proceedings of the CSEE,2009,29(21):99-106.
[17]郭香福,孟波.空心并联电抗器匝间短路故障电流及其过流保护系统[J].变压器,2008,45(11):20-22.GUO Xiangfu,MENG Bo.Inter-turn short circuit fault current and overcurrent protective system of shunt reactor with air core[J].Transformer,2008,45(11):20-22.
[18]LU Wen,ZHAO Yangdong,LI Weixing,et al.Design and application of microgrid operation control system based on IEC61850[J].Journal of Modern Power Systems and Clean Energy,2014,2(3):256-263.
[19]黄新波.智能变电站原理与应用[M].北京:中国电力出版社,2012.HUANG Xinbo.Principle and application of intelligent substation[M].Beijing:China Electric Power Press,2012.
[20]HUANG Xinbo,LI Hongbo,ZHU Yongcan.A short-term ice accretion forecasting model for transmission lines with modified time series analysis by fireworks algorithm[J].IET Generation Transmission&Distribution,2018,12(5):1074-1080.
[21]HUANG Xinbo,ZHANG Fei,LI Husheng,et al.An online technology for measuring icing shape on conductor based on vision and force sensors[J].IEEE Transactions on Instrumentation and Measurement,2017,66(12):3180-3189.
[22]黄新波,章云,李俊峰.变电站容性设备介损在线监测系统设计[J].高电压技术,2008,34(8):1594-1598.HUANG Xinbo,ZHANG Yun,LI Junfeng.Design of an online monitoring system of dielectric loss in capacitive equipment of substation[J].High Voltage Engineering,2008,34(8):1594-1598.
[23]王楠,律方成,梁英,等.基于高精度DFT的介损数字测量方法[J].高电压技术,2003,29(4):3-5.WANG Nan,LFangcheng,LIANG Ying,et al.Digital measurement of dielectric loss based on high accuracy DFTalgorithm[J].High Voltage Engineering,2003,29(4):3-5.
[24]徐志钮,律方成,赵丽娟.基于加汉宁窗插值的谐波分析法用于介损角测量的分析[J].电力系统自动化,2006,30(2):81-85.XU Zhiniu,LFangcheng,ZHAO Lijuan.Analysis of dielectric loss angle measurement by Hanning windowing interpolation algorithm based on FFT[J].Automation of Electric Power Systems,2006,30(2):81-85.
[25]陈楷,王卉,张承学.介损角测量中非同步采样算法的研究[J].继电器,2004,32(14):5-7.CHEN Kai,WANG Hui,ZHANG Chengxue.Research on dielectric loss angle measurement in the condition of nonsynchronous sampling[J].Relay,2004,32(14):5-7.
[26]唐蕾,陈维荣.畸变电压下单相电路谐波和无功电流综合检测方法[J].电力自动化设备,2009,29(6):44-47.TANG Lei,CHEN Weirong.Harmonic and reactive current detection of single-phase circuit with distorted voltage[J].Electric Power Automation Equipment,2009,29(6):44-47.
[27]徐志钮,律方成.基于改进基波相位分离法的介质损耗角测量[J].电网技术,2006,30(8):41-45.XU Zhiniu,LFangcheng.Dielectric loss angle measurement based on improved fundamental harmonic separation algorithm[J].Power System Technology,2006,30(8):41-45.
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