Pub Date : 2012-11-26DOI: 10.1109/ICHVE.2012.6357077
S. Pugazhendhi
Liquid dielectrics play a major role in the insulation system used in high voltage equipments. The most commonly used liquid dielectric is transformer oil which serves the dual purpose as insulation and a coolant. It also acts as insulation between the conductingparts and as an arc quenching medium. Moreover the breakdown strength of the paper and the pressboard insulation depends on the properties of the oil in which it is impregnated. Therefore investigations have been attracted towards the development of nano fluids with better thermal and dielectric properties. In this work, ceramic nano particles are chosen because of their electrical insulating property. Because of higher relative permittivity Zirconia(ZrO2) and Titania(TiO2) nano particles are used here. The dielectric and thermal properties are measured for different concentrations of nanofillers. AC and Impulse breakdown voltage measurements were performed as per IS 6792:1972 and IS 11697:1986 respectively. The specific resistivity and the dielectric dissipation factor measurement were carried with reference to IS 6103:1971 and IS 6262:1971. The kinematic viscosity and flash point are measured as per IS 1448 Part-25:1970 and IS 1448 Part-21:1970 respectively.
{"title":"Experimental evaluation on dielectric and thermal characteristics of nano filler added transformer oil","authors":"S. Pugazhendhi","doi":"10.1109/ICHVE.2012.6357077","DOIUrl":"https://doi.org/10.1109/ICHVE.2012.6357077","url":null,"abstract":"Liquid dielectrics play a major role in the insulation system used in high voltage equipments. The most commonly used liquid dielectric is transformer oil which serves the dual purpose as insulation and a coolant. It also acts as insulation between the conductingparts and as an arc quenching medium. Moreover the breakdown strength of the paper and the pressboard insulation depends on the properties of the oil in which it is impregnated. Therefore investigations have been attracted towards the development of nano fluids with better thermal and dielectric properties. In this work, ceramic nano particles are chosen because of their electrical insulating property. Because of higher relative permittivity Zirconia(ZrO2) and Titania(TiO2) nano particles are used here. The dielectric and thermal properties are measured for different concentrations of nanofillers. AC and Impulse breakdown voltage measurements were performed as per IS 6792:1972 and IS 11697:1986 respectively. The specific resistivity and the dielectric dissipation factor measurement were carried with reference to IS 6103:1971 and IS 6262:1971. The kinematic viscosity and flash point are measured as per IS 1448 Part-25:1970 and IS 1448 Part-21:1970 respectively.","PeriodicalId":6375,"journal":{"name":"2012 International Conference on High Voltage Engineering and Application","volume":"14 1","pages":"207-210"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90695479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/ICHVE.2012.6357124
Zhengyong Huang, Jian Li, Xinzhu Yan
Mechanically durable superhydrophobic surfaces with multifunction are promising candidate for the practical application of the superhydrophobic coating in future. Here semiconductive superhydrophobic coatings are prepared by a simple, one step dip-coating procedure through mixing PDMS and the hydrophobicly modified graphite. The mechanically durability contributes to the hierarchical roughness protected to some extent by the large scale features. Results show that the multifunctional superhydrophobic coating shows good conductivity and durable superhydrophobicity which has great potential in application of various fields.
{"title":"One-step preparation and application of semiconductive and durable superhydrophobic coating","authors":"Zhengyong Huang, Jian Li, Xinzhu Yan","doi":"10.1109/ICHVE.2012.6357124","DOIUrl":"https://doi.org/10.1109/ICHVE.2012.6357124","url":null,"abstract":"Mechanically durable superhydrophobic surfaces with multifunction are promising candidate for the practical application of the superhydrophobic coating in future. Here semiconductive superhydrophobic coatings are prepared by a simple, one step dip-coating procedure through mixing PDMS and the hydrophobicly modified graphite. The mechanically durability contributes to the hierarchical roughness protected to some extent by the large scale features. Results show that the multifunctional superhydrophobic coating shows good conductivity and durable superhydrophobicity which has great potential in application of various fields.","PeriodicalId":6375,"journal":{"name":"2012 International Conference on High Voltage Engineering and Application","volume":"19 1","pages":"265-268"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80653224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/ICHVE.2012.6357037
Zeng Fuping, Tang Ju, Z. Xiaoxing
Monitoring the contents of decomposed components of SF6 in order to identify the internal insulation faults of electrical equipment with SF6 dielectric is a common practice. Partial discharges (PDs) can lead to the decomposition of the SF6 dielectric. The new reactions also cause the final decomposed components to differ due to the different concentrations of H2O and O2 even under the same strength of PD. Thus, the accuracy of assessing inner insulation faults is affected when using the concentration and corresponding change of decomposed components. In this work, two main characteristic components SO2F2 and SOF2 was researched. The purpose is to perform influence analysis of trace H2O and O2 on the characteristic components. Research findings indicated that the amount of SOF2 strongly correlates to the amount of trace H2O, whereas the amount of SO2F2 is weakly related to trace H2O. Furthermore, the dilution effect of trace O2 on SOF2 obviously exceeds that on SO2F2.
{"title":"Influence of trace water and oxygen on characteristic decomposed components of SF6 under partial discharge","authors":"Zeng Fuping, Tang Ju, Z. Xiaoxing","doi":"10.1109/ICHVE.2012.6357037","DOIUrl":"https://doi.org/10.1109/ICHVE.2012.6357037","url":null,"abstract":"Monitoring the contents of decomposed components of SF<sub>6</sub> in order to identify the internal insulation faults of electrical equipment with SF<sub>6</sub> dielectric is a common practice. Partial discharges (PDs) can lead to the decomposition of the SF<sub>6</sub> dielectric. The new reactions also cause the final decomposed components to differ due to the different concentrations of H<sub>2</sub>O and O<sub>2</sub> even under the same strength of PD. Thus, the accuracy of assessing inner insulation faults is affected when using the concentration and corresponding change of decomposed components. In this work, two main characteristic components SO<sub>2</sub>F<sub>2</sub> and SOF<sub>2</sub> was researched. The purpose is to perform influence analysis of trace H<sub>2</sub>O and O<sub>2</sub> on the characteristic components. Research findings indicated that the amount of SOF<sub>2</sub> strongly correlates to the amount of trace H<sub>2</sub>O, whereas the amount of SO<sub>2</sub>F<sub>2</sub> is weakly related to trace H<sub>2</sub>O. Furthermore, the dilution effect of trace O<sub>2</sub> on SOF<sub>2</sub> obviously exceeds that on SO<sub>2</sub>F<sub>2</sub>.","PeriodicalId":6375,"journal":{"name":"2012 International Conference on High Voltage Engineering and Application","volume":"42 1","pages":"505-508"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79375538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/ICHVE.2012.6357050
D. Zhou, N. Azis, G. Y. Yang, Z. Wang, D. Jones, B. Wells, G. M. Wallwork
Dissolved Gas Analysis (DGA) is widely accepted as the most reliable tool for the detection of incipient faults in oil-immersed transformers. Currently there are several standards/guidelines such as IEC 60599, IEEE C57.104 and CIGRE 296 which are available to aid the interpretation of DGA test results. According to these standards, there are several methods that can be used to diagnose types of fault in transformers such as Rogers ratio and Duval Triangle. In particular, IEC 60599 and CIGRE 296 have suggested the usage of 90 % typical values for diagnosis. Since 90 % typical values vary with the load, type of transformer and climate, utilities are encouraged to calculate their own 90 % typical values. In this paper, the 90 % typical values of distribution transformers for different age intervals and manufacturer groups are calculated and the results shown that in general 90 % typical values increase with age, different manufacturers' transformers have given different 90 % typical values. Besides, a comparison between different gas extraction methods is carried out and its impact on 90 % typical values is identified. There is a difference of 90% typical values for different gas extraction methods.
{"title":"Examining acceptable Dissolved Gas Analysis level of in-service transformers","authors":"D. Zhou, N. Azis, G. Y. Yang, Z. Wang, D. Jones, B. Wells, G. M. Wallwork","doi":"10.1109/ICHVE.2012.6357050","DOIUrl":"https://doi.org/10.1109/ICHVE.2012.6357050","url":null,"abstract":"Dissolved Gas Analysis (DGA) is widely accepted as the most reliable tool for the detection of incipient faults in oil-immersed transformers. Currently there are several standards/guidelines such as IEC 60599, IEEE C57.104 and CIGRE 296 which are available to aid the interpretation of DGA test results. According to these standards, there are several methods that can be used to diagnose types of fault in transformers such as Rogers ratio and Duval Triangle. In particular, IEC 60599 and CIGRE 296 have suggested the usage of 90 % typical values for diagnosis. Since 90 % typical values vary with the load, type of transformer and climate, utilities are encouraged to calculate their own 90 % typical values. In this paper, the 90 % typical values of distribution transformers for different age intervals and manufacturer groups are calculated and the results shown that in general 90 % typical values increase with age, different manufacturers' transformers have given different 90 % typical values. Besides, a comparison between different gas extraction methods is carried out and its impact on 90 % typical values is identified. There is a difference of 90% typical values for different gas extraction methods.","PeriodicalId":6375,"journal":{"name":"2012 International Conference on High Voltage Engineering and Application","volume":"601 1","pages":"612-616"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77317411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/ICHVE.2012.6357047
F. Guerbas, M. Zitouni, A. Boubakeur, A. Beroual
Dielectric interfaces can have a significant effect on the insulating performances of HV apparatus. The oil/solid interface represents a relatively weak component of an insulation system in power transformer. Therefore, when we are considering the effect of oil breakdown in oil filled transformer, we should consider the interactions which electrical discharges may have with solid surfaces. This work is devoted to the influence of insulating barrier on the behaviour of transformer oil under ac voltage in point-plane electrode configuration. The influence of the characteristics of barrier such as its position between electrodes, and its diameter on the pre-breakdown and breakdown phenomena is investigated. It is shown that the insertion of barrier near the point electrode increases the breakdown voltage and leads to decrease the pre-breakdown charge. The increase of breakdown voltage is due to the channel elongation of the disruptive charge. By determination of the pre-breakdown charge and breakdown voltage, we can estimate the optimal position of the barrier. The barrier diameter influences the breakdown voltage, the pre-breakdown charge and the trajectory of discharge.
{"title":"Barrier diameter effect on the behaviour of transformer oil submitted to AC voltage","authors":"F. Guerbas, M. Zitouni, A. Boubakeur, A. Beroual","doi":"10.1109/ICHVE.2012.6357047","DOIUrl":"https://doi.org/10.1109/ICHVE.2012.6357047","url":null,"abstract":"Dielectric interfaces can have a significant effect on the insulating performances of HV apparatus. The oil/solid interface represents a relatively weak component of an insulation system in power transformer. Therefore, when we are considering the effect of oil breakdown in oil filled transformer, we should consider the interactions which electrical discharges may have with solid surfaces. This work is devoted to the influence of insulating barrier on the behaviour of transformer oil under ac voltage in point-plane electrode configuration. The influence of the characteristics of barrier such as its position between electrodes, and its diameter on the pre-breakdown and breakdown phenomena is investigated. It is shown that the insertion of barrier near the point electrode increases the breakdown voltage and leads to decrease the pre-breakdown charge. The increase of breakdown voltage is due to the channel elongation of the disruptive charge. By determination of the pre-breakdown charge and breakdown voltage, we can estimate the optimal position of the barrier. The barrier diameter influences the breakdown voltage, the pre-breakdown charge and the trajectory of discharge.","PeriodicalId":6375,"journal":{"name":"2012 International Conference on High Voltage Engineering and Application","volume":"4 1","pages":"570-574"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83386507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/ICHVE.2012.6357002
H. L. Rasara, K. Wong
The power distribution and transmission networks in many countries use wood for fabricating service poles for the overhead power lines. In this paper, we model a wooden pole used in an 11kV three phase distribution system. We use this model to study the electric fields induced in the wooden supporting structures, in order to determine the possibility of micro arcing inside them, using Finite Element Analysis. The three dimensional model takes into consideration both the resistive and capacitive properties, and closely resembles the actual pole. We show that the electric field distribution of the utility pole changes significantly with the change of weather conditions, and the size of the air gap at the wood-metal interface where the electric field is at its maximum. Also, we show that the electric field in this gap can be reduced significantly by modifying the king bolt using an epoxy coating. This reduction will minimize the chance of micro arcing inside the air gap near the bolt, which will reduce the long term degradation of the wooden structure.
{"title":"Study of electrical field and micro arcing in a wooden supporting structure using Finite Element Method","authors":"H. L. Rasara, K. Wong","doi":"10.1109/ICHVE.2012.6357002","DOIUrl":"https://doi.org/10.1109/ICHVE.2012.6357002","url":null,"abstract":"The power distribution and transmission networks in many countries use wood for fabricating service poles for the overhead power lines. In this paper, we model a wooden pole used in an 11kV three phase distribution system. We use this model to study the electric fields induced in the wooden supporting structures, in order to determine the possibility of micro arcing inside them, using Finite Element Analysis. The three dimensional model takes into consideration both the resistive and capacitive properties, and closely resembles the actual pole. We show that the electric field distribution of the utility pole changes significantly with the change of weather conditions, and the size of the air gap at the wood-metal interface where the electric field is at its maximum. Also, we show that the electric field in this gap can be reduced significantly by modifying the king bolt using an epoxy coating. This reduction will minimize the chance of micro arcing inside the air gap near the bolt, which will reduce the long term degradation of the wooden structure.","PeriodicalId":6375,"journal":{"name":"2012 International Conference on High Voltage Engineering and Application","volume":"1 1","pages":"26-29"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83221470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/ICHVE.2012.6357075
Weiqiang Wu, R. Liao, F. Zhang, Lijun Yang
It is the Kraft-MMT(K-MMT) which was composited with various percentage of MMT(Montmorillonite) that were prepared to be stirred in deionized water with different time to reinforce the properties of Kraft Paper. The breakdown and relative dielectric characteristics of K-MMT were investigated. According to corresponding data analysis,we concluded that the breakdown voltage of K-MMT (immerged oil) was increased more than 18 percent to 60kV/mm at 9 percent of MMT after 12 mins stirring. However,with the increasing of mixed MMT, the relative dielectric constant showed a trend of reduction correspondingly. The relative dielectric constant ranged from 2.29 to 2.42 at the frequency of 50 Hz.
{"title":"Study on the breakdown and dielectric characteristics of Kraft Paper mixed with MMT","authors":"Weiqiang Wu, R. Liao, F. Zhang, Lijun Yang","doi":"10.1109/ICHVE.2012.6357075","DOIUrl":"https://doi.org/10.1109/ICHVE.2012.6357075","url":null,"abstract":"It is the Kraft-MMT(K-MMT) which was composited with various percentage of MMT(Montmorillonite) that were prepared to be stirred in deionized water with different time to reinforce the properties of Kraft Paper. The breakdown and relative dielectric characteristics of K-MMT were investigated. According to corresponding data analysis,we concluded that the breakdown voltage of K-MMT (immerged oil) was increased more than 18 percent to 60kV/mm at 9 percent of MMT after 12 mins stirring. However,with the increasing of mixed MMT, the relative dielectric constant showed a trend of reduction correspondingly. The relative dielectric constant ranged from 2.29 to 2.42 at the frequency of 50 Hz.","PeriodicalId":6375,"journal":{"name":"2012 International Conference on High Voltage Engineering and Application","volume":"410 1","pages":"199-202"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77229900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/ICHVE.2012.6357092
Yaolong Wang, Xianping Zhao, J. Bian, R. Liao, Lijun Yang
It is necessary that risk assessment is made for power transformer to identify the risk of potential failure, effect of risk and make corresponding measure to reduce risk of potential failure. Failure mode and effects analysis (FMEA) is a methodology for the analysis of potential failure modes within a system and has been extensively utilized for examining potential failures to power transformer in risk assessment. The critical issue of FMEA is determination of risk priorities of potential failure modes. In order to provide the basis for risk assessment and preventive maintenance decision-making, this work proposes the FMEA based on cloud model for prioritizing failures modes. The actual example is utilized to illustrate the potential applications of the proposed FMEA.
{"title":"Cloud model-based risk assessment of power transformer","authors":"Yaolong Wang, Xianping Zhao, J. Bian, R. Liao, Lijun Yang","doi":"10.1109/ICHVE.2012.6357092","DOIUrl":"https://doi.org/10.1109/ICHVE.2012.6357092","url":null,"abstract":"It is necessary that risk assessment is made for power transformer to identify the risk of potential failure, effect of risk and make corresponding measure to reduce risk of potential failure. Failure mode and effects analysis (FMEA) is a methodology for the analysis of potential failure modes within a system and has been extensively utilized for examining potential failures to power transformer in risk assessment. The critical issue of FMEA is determination of risk priorities of potential failure modes. In order to provide the basis for risk assessment and preventive maintenance decision-making, this work proposes the FMEA based on cloud model for prioritizing failures modes. The actual example is utilized to illustrate the potential applications of the proposed FMEA.","PeriodicalId":6375,"journal":{"name":"2012 International Conference on High Voltage Engineering and Application","volume":"20 1","pages":"544-547"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75225259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/ICHVE.2012.6357007
Feng Wang, Yan Qi, Z. Fu
The low-voltage switching devices are widely used in all aspects of the power system. It is essential to verify performance after design, manufacture or repair. In our national standards and the international IEC standard, short-circuit test of the electrical products for use in the power system is very important, so it is necessary to research and develop the short-circuit test equipment and this issue was of course paid much attention by domestic and foreign researchers. In the process of the research and manufacturing of the short-circuit test equipment, the calculation of the expected output current is an essential part. In this paper, the expected short-circuit current of the test equipment is computed and simulated. Firstly, the impedances of the test system are calculated, then the model is created. From the quantified calculation results, the influencing factors which differentiate the actual output current from the expected value are analyzed. The results provide a theoretical basis for the development of this new test apparatus.
{"title":"Calculation of peak output current of short circuit test equipment used for the low-voltage switching devices","authors":"Feng Wang, Yan Qi, Z. Fu","doi":"10.1109/ICHVE.2012.6357007","DOIUrl":"https://doi.org/10.1109/ICHVE.2012.6357007","url":null,"abstract":"The low-voltage switching devices are widely used in all aspects of the power system. It is essential to verify performance after design, manufacture or repair. In our national standards and the international IEC standard, short-circuit test of the electrical products for use in the power system is very important, so it is necessary to research and develop the short-circuit test equipment and this issue was of course paid much attention by domestic and foreign researchers. In the process of the research and manufacturing of the short-circuit test equipment, the calculation of the expected output current is an essential part. In this paper, the expected short-circuit current of the test equipment is computed and simulated. Firstly, the impedances of the test system are calculated, then the model is created. From the quantified calculation results, the influencing factors which differentiate the actual output current from the expected value are analyzed. The results provide a theoretical basis for the development of this new test apparatus.","PeriodicalId":6375,"journal":{"name":"2012 International Conference on High Voltage Engineering and Application","volume":"9 1","pages":"72-75"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87053650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/ICHVE.2012.6357109
Jianyin Liu, Zhong Zheng
This paper described the principle of transmission line fault location based on traveling waves. The uncertainty of wave speed brings error to fault location based on traveling waves. The present fault location methods avoiding wave speed were based on single or double terminal traveling waves. However, invalidation or great error will occur when the attenuated waves can not be measured after refraction or reflection. The authors introduced two novel and easy-to-measure parameters, which provide a new approach to greatly improve the accuracy of fault location. The first pulse wave of fault also gives many characteristic information of the failure which was used to identify the type of failures to convenient the workers making targeted rush repair. Field measurement and calculation results are compared and the related limitations are discussed.
{"title":"Fault location and type identification on transmission line using a novel traveling wave method","authors":"Jianyin Liu, Zhong Zheng","doi":"10.1109/ICHVE.2012.6357109","DOIUrl":"https://doi.org/10.1109/ICHVE.2012.6357109","url":null,"abstract":"This paper described the principle of transmission line fault location based on traveling waves. The uncertainty of wave speed brings error to fault location based on traveling waves. The present fault location methods avoiding wave speed were based on single or double terminal traveling waves. However, invalidation or great error will occur when the attenuated waves can not be measured after refraction or reflection. The authors introduced two novel and easy-to-measure parameters, which provide a new approach to greatly improve the accuracy of fault location. The first pulse wave of fault also gives many characteristic information of the failure which was used to identify the type of failures to convenient the workers making targeted rush repair. Field measurement and calculation results are compared and the related limitations are discussed.","PeriodicalId":6375,"journal":{"name":"2012 International Conference on High Voltage Engineering and Application","volume":"79 1","pages":"290-293"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84076251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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