基于三相幅值相位关系分析的交叉互联电缆局部放电宽频检测和分析
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摘要
电力电缆是电力系统中重要的输电设备之一。为减小屏蔽层损耗和降低电缆末端的电压升高,长距离三相输电电缆通常采用交叉互联接地方式。所以,现场检测交叉互联电缆的局部放电时,即会受到外界电磁干扰信号的影响,又会受到三相电缆之间的串扰信号的影响,导致检测结果难以分析判断。为提高现场交叉电缆系统局部放电的有效检测和准确分析,文中采用宽频带检测传感器现场检测了交叉互联电缆局部放电信号,基于放电脉冲波形图、放电PRPD谱图和3PARD谱图,通过分离分类的方法对现场检测结果进行了识别分析。研究结果表明,利用宽频带传感器可获得更多的局部放电信息,有效抑制外界干扰信号;三相幅值相位分析法可有效区分不同相的局部放电信号,排除三相放电信号串扰的影响,从而实现对放电源的识别。
The power cable is one of the most important transmission equipments. The long cable common use thecross bonded grounding method to reduce the loss of shielding layer and decerease the volatge rise at the end of ca-ble. Therefore, it is difficult to diagnosis the PD detection results of cross bonded cable in field because the PD sig-nals will be influence both the enviroment electromagnet interference and the interference among different phases.The broadband sensor is used to detect the PD of cross bonded cable in field in this paper. The waveforms of the PDpulse, PRPD and 3PARD diagrams are analyzed to diagnose the results. The results have shown that the broadbandsensor can anti the enviroment electromagnet interference because it can obtain more information of PD signal. The 3 PARD diagrams can division the interference among different phases.
The power cable is one of the most important transmission equipments. The long cable common use thecross bonded grounding method to reduce the loss of shielding layer and decerease the volatge rise at the end of ca-ble. Therefore, it is difficult to diagnosis the PD detection results of cross bonded cable in field because the PD sig-nals will be influence both the enviroment electromagnet interference and the interference among different phases.The broadband sensor is used to detect the PD of cross bonded cable in field in this paper. The waveforms of the PDpulse, PRPD and 3PARD diagrams are analyzed to diagnose the results. The results have shown that the broadbandsensor can anti the enviroment electromagnet interference because it can obtain more information of PD signal. The 3 PARD diagrams can division the interference among different phases.
引文
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[12]章鹿华,王伟,李华春.交叉互联接地电缆系统局放检测的仿真研究[J].电测与仪表,2010,47(1):38-42.ZHANG Luhua,WANG Wei,LI Huachun. The emulation research of partial discharge detection for the cross bonding cable system[J]. Electrical Measurement&Instrumentation,2010,47(1):38-42.
[13]郑文栋,杨宁,钱勇,等.多传感器联合检测技术在XLPE电缆附件局部放电定位中的试验研究[J].电力系统保护与控制,2011,39(20):84-88.ZHENG Wendong,YANG Ning,QIAN Yong,et al. Experimental research on partial discharge localization in XLPE cable accessories using multi sensor joint detection technology[J]. Power System Protection and Control,2011,39(20):84-88.
[14] KOLTUNOWICZ W,PLATH R. Synchronous multi-channel PD measurements[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2008,15(6):1715-1723.
[15] KRAETGE A,HOEK S,HUMMEL R,et al. De-noising approaches for partial discharge measurements-A comparison of methods and their practical application[C]//International Conference on Condition Monitoring and Diagnosis.[S.l.]:IEEE,2013:538-541.
[2]郭灿新,张丽,钱勇,等. XLPE电力电缆中局部放电检测及定位技术的研究现状[J].高压电器,2009,45(3):56-60.GUO Canxin,ZHANG Li,QIAN Yong,et al. Current status of partial discharge detection and location techniques in XLPE power cable[J]. High Voltage Apparatus,2009,45(3):56-60.
[3]罗俊华,杨黎明,姜芸,等.电力电缆运行、故障及试验综述[J].电力设备,2004,5(8):4-8.LUO Junhua,YANG Liming,JIANG Yun,et al. Outline of operation and fault and testing for power cable[J]. Electrical Equipment,2004,5(8):4-8.
[4]廖雁群,崔江静,孙廷玺,等. XLPE电力电缆接头局部放电现场检测技术研究[C]//2010年:苏州电力电缆状态检修技术交流会论文集.苏州:[s.n.],2010:48-53.LIAO Yanqun,CUI Jiangjing,SUN Tingxi,et al. Study on on-site partial discharge detection for XLPE power cable joints[C]//2010 Power Cable Partial Discharge Detection Conference. Suzhou:[s.n.],2010:48-53.
[5]朱晓辉,杜伯学,周风争,等.高压交联聚乙烯电缆在线监测及检测技术的研究现状[J].绝缘材料,2009,42(5):58-63.ZHU Xiaohui,DU Boxue,ZHOU Fengzheng,et al. Progress of on-line monitoring and detecting technique for high voltage XLPE cable[J]. Insulating Materials,2009,42(5)58-63.
[6]姜芸,周韫捷.分布式局部放电在线监测技术在上海500 k V交联聚乙烯电力电缆线路中的应用[J].高电压技术,2015,41(4):1249-1256.JIANG Yun,ZHOU Yunjie. Application of distributed partial discharge on-line monitoring technology in Shanghai500 kV XLPE power cable line[J]. High Voltage Engineering,2015,41(4):1249-1256.
[7] PETZOLD F,SCHLAPP H,GULSKI E,et al. Advanced solution for on-site diagnosis of distribution power cables[J].IEEE Transactions on Dielectrics and Electrical Insulation,2008,15(6):1584-1589.
[8] HE Weisheng,WANG Qinghua,HUANG Chenxi,et al. A novel noise elimination method for PD measurement of on-site MV cable using frequency-tuned resonant system[C]//2016 International Conference on Condition Monitoring and Diagnosis(CMD). Xi’an,China:[s.n.],2016:904-907.
[9]王伟,王永亮,刘冲,等. 110 kV三相交叉互联电缆的频变模型及局放仿真分析[J].中国电机工程学报,2011,31(1):117-122.WANG Wei,WANG Yongliang,LIU Chong,et al. Partial discharge simulation analysis and frequency-dependent model for 110 kV three-phase cross-bonded cable[J]. Proceedings of CSEE,2011,31(1):117-122.
[10]姚翔,李海生,付尚莹. XLPE电缆交叉互联系统中的局放脉冲传播特性[J].高电压技术,2008,34(2):416-418.YAO Xiang,LI Haisheng,FU Shangying. The propagation characteristics of partial discharge in cross-bonded XLPE cable[J]. High Voltage Engineering,2008,34(2):416-418.
[11]张磊祺,盛博杰,姜伟,等.交叉互联高压电缆系统的局部放电在线监测和定位[J].高电压技术,2015,41(8):2706-2715.ZHANG Leiqi,SHENG Bojie,JIANG Wei,et al. On-line partial discharge localization in cross-bonded HV cable systems[J]. High Voltage Engineering,2015,41(8):2706-2715.
[12]章鹿华,王伟,李华春.交叉互联接地电缆系统局放检测的仿真研究[J].电测与仪表,2010,47(1):38-42.ZHANG Luhua,WANG Wei,LI Huachun. The emulation research of partial discharge detection for the cross bonding cable system[J]. Electrical Measurement&Instrumentation,2010,47(1):38-42.
[13]郑文栋,杨宁,钱勇,等.多传感器联合检测技术在XLPE电缆附件局部放电定位中的试验研究[J].电力系统保护与控制,2011,39(20):84-88.ZHENG Wendong,YANG Ning,QIAN Yong,et al. Experimental research on partial discharge localization in XLPE cable accessories using multi sensor joint detection technology[J]. Power System Protection and Control,2011,39(20):84-88.
[14] KOLTUNOWICZ W,PLATH R. Synchronous multi-channel PD measurements[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2008,15(6):1715-1723.
[15] KRAETGE A,HOEK S,HUMMEL R,et al. De-noising approaches for partial discharge measurements-A comparison of methods and their practical application[C]//International Conference on Condition Monitoring and Diagnosis.[S.l.]:IEEE,2013:538-541.