智能变电站电缆局部放电在线监测系统的研究
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摘要
介绍了一种遵从于IEC 61850通信规约的智能变电站电缆局部放电在线监测系统。首先分析了电缆局部放电的检测原理及检测方法;然后设计了基于光纤同步触发和组网的监测硬件系统,以及基于用户数据报协议(user datagram protocol,UDP)和生产者/消费者模式的高速采集,并经过专家系统判别分析后能将监测结果通过IEC 61850规约实现共享的软件系统。最后用2种不同电极结构的局部放电类型,通过模拟实验对监测系统进行了检验。结果显示设备运行良好,监控平台能够准确地监视局部放电信号,能够识别出放电类型,并能通过IEC 61850通信规约将监测结果共享。
An online monitoring system in smart substations for partial discharges of cables based on IEC61850 was proposed. The detection principles and methods of partial discharges in cables were analyzed. A monitoring hardware system based on fiber synchronous triggering and fiber networks was designed as well as a monitoring software system which is a high-speed acquisition system based on UDP protocol and producer/consumer models. Moreover, this monitoring system 's results can be analyzed by an expert system and then shared via IEC61850 protocol. Finally, two kinds of partial discharge model experiments were simulated to verify the monitoring system. The results show that the system runs well, the monitors can distinguish partial discharge signals accurately, whose results can be shared via IEC61850 protocol.
An online monitoring system in smart substations for partial discharges of cables based on IEC61850 was proposed. The detection principles and methods of partial discharges in cables were analyzed. A monitoring hardware system based on fiber synchronous triggering and fiber networks was designed as well as a monitoring software system which is a high-speed acquisition system based on UDP protocol and producer/consumer models. Moreover, this monitoring system 's results can be analyzed by an expert system and then shared via IEC61850 protocol. Finally, two kinds of partial discharge model experiments were simulated to verify the monitoring system. The results show that the system runs well, the monitors can distinguish partial discharge signals accurately, whose results can be shared via IEC61850 protocol.
引文
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[16]黄昊,雷勇,颜嘉俊,等.交联聚乙烯中压电缆绝缘性能的检测和分析[J].中国电力,2014,47(2):73-77.HUANG Hao,LEI Yong,YAN Jiajun,et al.Insulation detection and analysis of XLPE medium-voltage cables[J].Electric Power,2014,47(2):73-77.
[2]罗俊华,冯江,袁检,等.交联聚乙烯电缆局部放电高频检测技术的研究[J].电网技术,2001,25(12):42-45.LUO Junhua,FENG Jiang,YUAN Jian,at al.Study on detection of partial discharge in XLPE cable at higher frequency[J].Power System Technology,2001,25(12):42-45.
[3]何树林.XLPE电缆局放在线检测的研究[D].长沙:湖南大学,2004.
[4]张金江,郭创新,曹一家,等.变电站设备状态监测系统及其IEC模型协调[J].电力系统自动化,2009,33(20):67-72.ZHANG Jinjiang,GUO Chuangxin,CAO Yijia,et al.Substation equipment condition monitor system and IEC model coordination[J].Automation of Electric Power Systems,2009,33(20):67-72.
[5]常文治,李成榕,苏錡,等.电缆接头尖刺缺陷局部放电发展过程的研究[J].中国电机工程学报,2013,33(7):1-10.CHANG Wenzhi,LI Chengrong,SU Qi,et al.Study on development of partial discharges at the defect caused by a needle damage to a cable joint[J].Proceedings of the CSEE,2013,33(7):1-10.
[6]李华春.电缆局部放电在线检测方法的分析比较[J].电力设备,2005,6(5):29-33.LI Huachun.The comparation of the method of online detection of power cable discharge[J].Electrical Equipment,2005,6(5):29-33.
[7]李鹤南.高压电缆接头局部放电检测方法[D].北京:华北电力大学,2011.
[8]孙一民,李延新,黎强.分阶段实现数字化变电站系统的工程方案[J].电力系统自动化,2007,31(5):90-93.SUN Yimin,LI Yanxin,LI Qiang.A grading solution for building digital station[J].Automation of Electric Power Systems,2007,31(5):90-93.
[9]王艳芳,戴永,刘东华,等.基于UDP的数据可靠传输技术研究与应用[J].计算机工程与应用,2010,46(3):105-108.WANG Fang,DAI Yong,LIU Yonghua,et al.Data reliable transportation technology based on UDP[J].Computer Engineering and Applications,2010,46(3):105-108.
[10]陈树学,刘萱.Labview宝典[M].北京:电子工业出版社,2011.
[11]叶枫桦,周新聪,白秀琴,等.基于Lab VIEW队列状态机的数据采集系统设计[J].现代电子技术,2010,26(4):204-207.YE Fenghua,ZHOU Xincong,BAI Xiuqin,et al.Design of data acquisition program based on queued state machine in Labview[J].Modern Electronics Technique,2010,26(4):204-207.
[12]宋颖.交联聚乙烯电缆局部放电信号检测与模式识别的研究[D].北京:华北电力大学,2011.
[13]马宏明,周年荣,肖丹,等.交直流电压条件下GIS局部放电检测对比研究[J].中国电力,2014,47(3):125-129.MA Hongming,ZHOU Nianrong,XIAO Dan,et al.Study on partial discharge detection in GIS under AC voltage and DC voltage[J].Electric Power,2014,47(3):125-129.
[14]李培江,朱晓锦,尤婷.基于神经网络GIS局部放电模式的识别[J].中国电力,2013,46(10):60-66.LI Peijiang,ZHU Xiaojin,YOU Ting.Neural Network based partial discharge pattern identification of GIS[J].Electric Power,2013,46(10):60-66.
[15]吴敏秀.中压电缆终端在线监测及故障预警技术的研究[J].中国电力,2014,47(4):123-127.WU Minxiu.Study on the on-line monitoring and fault earlywarning techniques for medium voltage cable terminals[J].Electric Power,2014,47(4):123-127.
[16]黄昊,雷勇,颜嘉俊,等.交联聚乙烯中压电缆绝缘性能的检测和分析[J].中国电力,2014,47(2):73-77.HUANG Hao,LEI Yong,YAN Jiajun,et al.Insulation detection and analysis of XLPE medium-voltage cables[J].Electric Power,2014,47(2):73-77.