Pub Date : 2023-06-12DOI: 10.1109/APL57308.2023.10181821
F. C. Lubasi, C. Gomes
This study investigates lightning-related accidents in Zambia in recent years. Being a landlocked Southern African country, Zambia experiences a rather high isokeraunic level which is 16.8 flashes/km2/year. The 10-year information on lightning accidents in the country shows a few striking features that characterize countries with underprivileged communities. There is a significantly high proportion of indoor accidents compared to outdoor accidents that we attribute to the unsafe structures that are home to many families. The same feature gives rise to a comparable number of male and female victims and an infant-child-youth population that usually does not take part in many outdoor activities compared to the breadwinners of the family. The monthly accident pattern coincides with rainfall distribution and the diurnal accident distribution coincides with the convection cloud formation pattern in most tropical countries. Based on the outcome of this study, we propose a few recommendations for the development of lightning safety modules for Zambia and other countries with similar socio-economic features and thunderstorm patterns.
{"title":"Lightning Accidents in Zambia","authors":"F. C. Lubasi, C. Gomes","doi":"10.1109/APL57308.2023.10181821","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181821","url":null,"abstract":"This study investigates lightning-related accidents in Zambia in recent years. Being a landlocked Southern African country, Zambia experiences a rather high isokeraunic level which is 16.8 flashes/km2/year. The 10-year information on lightning accidents in the country shows a few striking features that characterize countries with underprivileged communities. There is a significantly high proportion of indoor accidents compared to outdoor accidents that we attribute to the unsafe structures that are home to many families. The same feature gives rise to a comparable number of male and female victims and an infant-child-youth population that usually does not take part in many outdoor activities compared to the breadwinners of the family. The monthly accident pattern coincides with rainfall distribution and the diurnal accident distribution coincides with the convection cloud formation pattern in most tropical countries. Based on the outcome of this study, we propose a few recommendations for the development of lightning safety modules for Zambia and other countries with similar socio-economic features and thunderstorm patterns.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"51 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120982487","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 : 2023-06-12DOI: 10.1109/APL57308.2023.10181584
Atsushi Sato, Keiichi Saito
It is difficult to diagnose the deterioration of surge protection device (SPD) that protect electrical facilities from surge voltages. The conventional approach is to remove the SPD from the equipment, measure the operation starting voltage with an expensive testing apparatus, and then judge. To simplify this procedure, we investigated the connection between SPD deterioration and leakage current and found that the peak value of the leakage current was closely correlated with deterioration. On the basis of this result, we developed a deterioration diagnosis device that can be easily and safely handled by equipment maintenance personnel without having to remove the SPD.
{"title":"Degradation-Diagnosis Technology for Surge Protection Device for power line.","authors":"Atsushi Sato, Keiichi Saito","doi":"10.1109/APL57308.2023.10181584","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181584","url":null,"abstract":"It is difficult to diagnose the deterioration of surge protection device (SPD) that protect electrical facilities from surge voltages. The conventional approach is to remove the SPD from the equipment, measure the operation starting voltage with an expensive testing apparatus, and then judge. To simplify this procedure, we investigated the connection between SPD deterioration and leakage current and found that the peak value of the leakage current was closely correlated with deterioration. On the basis of this result, we developed a deterioration diagnosis device that can be easily and safely handled by equipment maintenance personnel without having to remove the SPD.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127192541","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}
Lightning is one of the important factors affecting the normal operation of distribution lines. In order to improve the economy of lightning protection transformation of distribution lines, this paper builds a risk assessment and lightning characteristic calculation model according to the actual lines, and determines the lightning hazard risk level of each line section according to the lightning trip rate. The calculation model and results can provide reference for subsequent lightning protection strategies of distribution lines.
{"title":"Lightning risk assessment for the typical 10 kV distribution line","authors":"Yao Yao, Zijian Li, Zejun Lu, Jian Li, Xueming Zhou, Ying-Mao Xie","doi":"10.1109/APL57308.2023.10181890","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181890","url":null,"abstract":"Lightning is one of the important factors affecting the normal operation of distribution lines. In order to improve the economy of lightning protection transformation of distribution lines, this paper builds a risk assessment and lightning characteristic calculation model according to the actual lines, and determines the lightning hazard risk level of each line section according to the lightning trip rate. The calculation model and results can provide reference for subsequent lightning protection strategies of distribution lines.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128248749","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}
Cloud-to-ground lightning flash has been shown to have a strong correlation with geography. In order to assess lightning risk in a specific environment from the perspective of topography, this paper divides Yunnan Province in China into two parts according to the topographic features, East and West, and conducts the study respectively. Firstly, the nonlinear functional relationships between ground flash density and topographic factors including elevation, slope, slope direction, topographic position index, and ground cover type are fitted, and then the entropy method is used to assign weights to the five terrain factors to finally obtain the lightning sensitivity assessment model. Finally, two typical areas are selected to verify the validity of the sensitivity model. The lightning sensitivity model has a high spatial resolution and can provide reference of lightning risk for transmission line construction in places without LLS site coverage.
{"title":"Lightning Sensitivity Assessment Based on Topographic Factors","authors":"Baoyu Xu, Xiao He, Jiajun Cao, Yeqiang Deng, Shuangde Huang, Yu Wang","doi":"10.1109/APL57308.2023.10181392","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181392","url":null,"abstract":"Cloud-to-ground lightning flash has been shown to have a strong correlation with geography. In order to assess lightning risk in a specific environment from the perspective of topography, this paper divides Yunnan Province in China into two parts according to the topographic features, East and West, and conducts the study respectively. Firstly, the nonlinear functional relationships between ground flash density and topographic factors including elevation, slope, slope direction, topographic position index, and ground cover type are fitted, and then the entropy method is used to assign weights to the five terrain factors to finally obtain the lightning sensitivity assessment model. Finally, two typical areas are selected to verify the validity of the sensitivity model. The lightning sensitivity model has a high spatial resolution and can provide reference of lightning risk for transmission line construction in places without LLS site coverage.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126917301","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 : 2023-06-12DOI: 10.1109/APL57308.2023.10181409
Barun Ghimire, Shriram Sharma, Pradip Karki, N. Karki, K. Poudyal, Chandima Gomes
A case study on the property damage incurred by a lightning strike to a low-voltage transmission system in Fujel, a rural village of Gorkha, Nepal has been presented. The study aims at analyzing the extent of economic loss and investigates the nature of the impact. A lightning ground flash reportedly struck a low-voltage distribution line. The current travelled along the line towards the nearest post and entered the soil puncturing the base of the post. Fifteen newly installed electric meters were damaged out of which 3 were blown apart. Similarly, 5 television sets, and over 100 electric lamps were also damaged. A goat tamed in a wooden cage along with 10 others was also found dead after the lightning incident. Altogether, 20 households were affected by the strike incurring an estimated financial loss of about NPR 655,500 (approximately USD 6,000.00).A closer inspection of the affected houses and their electrical installations revealed that none of the houses had protective measures against lightning and even the TT wiring did not have an earthing system for the low-voltage electrical installation. This study reflects the level of vulnerability of the households in rural Nepal pertinent to lightning and electrical hazards.
{"title":"Impact of a lightning strike on a low voltage transmission line: A case study from Fujel Gorkha, Nepal","authors":"Barun Ghimire, Shriram Sharma, Pradip Karki, N. Karki, K. Poudyal, Chandima Gomes","doi":"10.1109/APL57308.2023.10181409","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181409","url":null,"abstract":"A case study on the property damage incurred by a lightning strike to a low-voltage transmission system in Fujel, a rural village of Gorkha, Nepal has been presented. The study aims at analyzing the extent of economic loss and investigates the nature of the impact. A lightning ground flash reportedly struck a low-voltage distribution line. The current travelled along the line towards the nearest post and entered the soil puncturing the base of the post. Fifteen newly installed electric meters were damaged out of which 3 were blown apart. Similarly, 5 television sets, and over 100 electric lamps were also damaged. A goat tamed in a wooden cage along with 10 others was also found dead after the lightning incident. Altogether, 20 households were affected by the strike incurring an estimated financial loss of about NPR 655,500 (approximately USD 6,000.00).A closer inspection of the affected houses and their electrical installations revealed that none of the houses had protective measures against lightning and even the TT wiring did not have an earthing system for the low-voltage electrical installation. This study reflects the level of vulnerability of the households in rural Nepal pertinent to lightning and electrical hazards.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121153808","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 : 2023-06-12DOI: 10.1109/APL57308.2023.10181389
N. Abdullah, M. F. Ariffin, N. Hatta, M. F. Nozlan, Azwadi Mohamad, M. Osman
Aged and failed line surge arresters (LSA) would reduce the overvoltage protection for the equipment, leave equipment unprotection and shorten its lifetime. LSA failure can cause transient and nuisance tripping in the system reducing the overall work performance index (SAIDI) in a distribution network system. Pilot implementation of suitable technologies for LSA monitoring available in the market was conducted on a 33kV study line for 10 months since September 2020. The project has provided inputs for the development of a guideline document for the in-service LSA health conditions monitoring which is used as an operation & maintenance reference. The potential LSA monitoring system with IoT capability implemented in this project is to be considered for future deployment as part of SmartUtility 2025 initiatives in enhancing work management and increasing system reliability and efficiency in the Tenaga Nasional Berhad distribution network. A better understanding of the in-service LSA monitoring technology working principles and feasibility of wide implementation in the Distribution Network Medium Voltage overhead line network system has been achieved through this project.
{"title":"Surge Arrester Monitoring Implementation at 33kV Distribution Overhead Line in Malaysia","authors":"N. Abdullah, M. F. Ariffin, N. Hatta, M. F. Nozlan, Azwadi Mohamad, M. Osman","doi":"10.1109/APL57308.2023.10181389","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181389","url":null,"abstract":"Aged and failed line surge arresters (LSA) would reduce the overvoltage protection for the equipment, leave equipment unprotection and shorten its lifetime. LSA failure can cause transient and nuisance tripping in the system reducing the overall work performance index (SAIDI) in a distribution network system. Pilot implementation of suitable technologies for LSA monitoring available in the market was conducted on a 33kV study line for 10 months since September 2020. The project has provided inputs for the development of a guideline document for the in-service LSA health conditions monitoring which is used as an operation & maintenance reference. The potential LSA monitoring system with IoT capability implemented in this project is to be considered for future deployment as part of SmartUtility 2025 initiatives in enhancing work management and increasing system reliability and efficiency in the Tenaga Nasional Berhad distribution network. A better understanding of the in-service LSA monitoring technology working principles and feasibility of wide implementation in the Distribution Network Medium Voltage overhead line network system has been achieved through this project.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127901390","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 : 2023-06-12DOI: 10.1109/APL57308.2023.10181557
G. Finis, T. Meyer, Hannes Sagebiel
To ensure highest availability of a low-voltage power supply system (LV PSS) in case of surge and lightning current events, surge protective devices (SPDs) have to be used. SPDs can provide reliable protection against these disturbances without causing negative impacts on the operational condition of the system itself. In this regard, their performance and reliability have to be proved with qualification tests which cover the whole range of the operational conditions of the LV PSS with the installed SPDs. Investigations setting a focus on the impact of the applied surge-current impulse amplitude on the operational behavior of the system in combination with SPD are carried out. Additionally, the impact of the prospective short-circuit current of the LV PSS on the operational behavior of the SPD is under investigation. A further focus is set on the evaluation of the discharge capability of lightning current arresters. Thereby, the impact of the amplitude, the number of applied impulses and the temporal interval between the single impulses applied are in the scope of these investigations. These investigations are carried out by using a newly developed class I lightning current arrester. Finally, a comparison of the suitability of the test procedures for the qualification testing of lightning current arresters given by the present IEC 61643-11 standard compared to procedures with enhanced requirements took place.
{"title":"Advanced Performance Testing of a Lightning Current Arrester Based on Spark-Gap Technology","authors":"G. Finis, T. Meyer, Hannes Sagebiel","doi":"10.1109/APL57308.2023.10181557","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181557","url":null,"abstract":"To ensure highest availability of a low-voltage power supply system (LV PSS) in case of surge and lightning current events, surge protective devices (SPDs) have to be used. SPDs can provide reliable protection against these disturbances without causing negative impacts on the operational condition of the system itself. In this regard, their performance and reliability have to be proved with qualification tests which cover the whole range of the operational conditions of the LV PSS with the installed SPDs. Investigations setting a focus on the impact of the applied surge-current impulse amplitude on the operational behavior of the system in combination with SPD are carried out. Additionally, the impact of the prospective short-circuit current of the LV PSS on the operational behavior of the SPD is under investigation. A further focus is set on the evaluation of the discharge capability of lightning current arresters. Thereby, the impact of the amplitude, the number of applied impulses and the temporal interval between the single impulses applied are in the scope of these investigations. These investigations are carried out by using a newly developed class I lightning current arrester. Finally, a comparison of the suitability of the test procedures for the qualification testing of lightning current arresters given by the present IEC 61643-11 standard compared to procedures with enhanced requirements took place.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132108341","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 : 2023-06-12DOI: 10.1109/APL57308.2023.10181352
Wei Cao, S. Gu, Jian Li, Shuai Wan, Xiumin Chen, Zihao Liu
In order to meet the requirement of deeply limiting the operating overvoltage level of a 500 kV AC power system, a controllable metal oxide surge arrester with a trigger switch was developed. The key technical parameters of the arrester, such as rated voltage, reference voltage, insulation withstand, partial discharge, radio interference voltage, and residual voltage, were introduced. The prototype structures of the arrester body, such as the fixed part, the controlled part, and the gap switch, were designed, and the test verification work was carried out. The research results show that the DC 4mA reference voltage of the fixed part and the controlled part of the arrester body is 462.2kV and 180.2kV, respectively. The partial discharge is not more than 2.56pC, and the radio interference voltage is 195.7μV. The operating impulse residual voltage of the lightning arrester body at 15kA is 776.5kV. The external insulation of the fixed part has passed the lightning impulse test with an amplitude of 685kV, 650kV operating impulse test, and 452kV power frequency voltage test. At the same time, it has undergone two times the 4/10μs waveform with an amplitude of 105kA. The gap switch can effectively operate and achieve reliable coordination with the arrester body. All experimental results indicate that the performance indicators of the controllable arrester developed fully meet the technical requirements and meet the conditions for grid operation.
{"title":"Development of controllable metal oxide surge arrester with trigger switch for 500kV AC power system","authors":"Wei Cao, S. Gu, Jian Li, Shuai Wan, Xiumin Chen, Zihao Liu","doi":"10.1109/APL57308.2023.10181352","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181352","url":null,"abstract":"In order to meet the requirement of deeply limiting the operating overvoltage level of a 500 kV AC power system, a controllable metal oxide surge arrester with a trigger switch was developed. The key technical parameters of the arrester, such as rated voltage, reference voltage, insulation withstand, partial discharge, radio interference voltage, and residual voltage, were introduced. The prototype structures of the arrester body, such as the fixed part, the controlled part, and the gap switch, were designed, and the test verification work was carried out. The research results show that the DC 4mA reference voltage of the fixed part and the controlled part of the arrester body is 462.2kV and 180.2kV, respectively. The partial discharge is not more than 2.56pC, and the radio interference voltage is 195.7μV. The operating impulse residual voltage of the lightning arrester body at 15kA is 776.5kV. The external insulation of the fixed part has passed the lightning impulse test with an amplitude of 685kV, 650kV operating impulse test, and 452kV power frequency voltage test. At the same time, it has undergone two times the 4/10μs waveform with an amplitude of 105kA. The gap switch can effectively operate and achieve reliable coordination with the arrester body. All experimental results indicate that the performance indicators of the controllable arrester developed fully meet the technical requirements and meet the conditions for grid operation.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134355922","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 : 2023-06-12DOI: 10.1109/APL57308.2023.10181558
Siti Nur Aishah Binti Azman, N. H. Nik Ali, Atip Doolgindachbaporn, A. M. Ariffin, N. Azis, N. Aminudin
The International Electrotechnical Commission (IEC) has created standards for transformers, which are normally adhered to by the great majority of those that are used in locations all over the world. When it comes to calculating transformer ratings, Malaysia is one of the nations that use the International Electrotechnical Commission’s (IEC 60076-72018) for power transformers. Based on the equations in the standard, transformer rating can be affected by changes of the environmental conditions, e.g. ambient temperature. The recent climate change in Malaysia had an influence on the transformer rating that has been mentioned in the IEC standard. This situation is the impetus for conducting this research in the first place. The ambient temperature profile which is based on a few of the world continents’ profiles and also specifically the ambient temperature profile in Malaysia are studied and presented by varying ambient temperatures in the IEC Standard mathematical algorithm. The IEC 60076-7 offers recommendations for the specification and loading of power transformers with regard to operating temperature and thermal ageing. This work will focus on the hot spot and top oil temperature of a transformer. The result shows that by changing the ambient temperature by 10 degrees will give effect to the hot spot and top oil temperature and therefore, the ratings of the transformer will also be affected.
{"title":"Top-Oil Thermal Model for Power Transformers that Reflects Ambient Temperature Profile in Malaysia","authors":"Siti Nur Aishah Binti Azman, N. H. Nik Ali, Atip Doolgindachbaporn, A. M. Ariffin, N. Azis, N. Aminudin","doi":"10.1109/APL57308.2023.10181558","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181558","url":null,"abstract":"The International Electrotechnical Commission (IEC) has created standards for transformers, which are normally adhered to by the great majority of those that are used in locations all over the world. When it comes to calculating transformer ratings, Malaysia is one of the nations that use the International Electrotechnical Commission’s (IEC 60076-72018) for power transformers. Based on the equations in the standard, transformer rating can be affected by changes of the environmental conditions, e.g. ambient temperature. The recent climate change in Malaysia had an influence on the transformer rating that has been mentioned in the IEC standard. This situation is the impetus for conducting this research in the first place. The ambient temperature profile which is based on a few of the world continents’ profiles and also specifically the ambient temperature profile in Malaysia are studied and presented by varying ambient temperatures in the IEC Standard mathematical algorithm. The IEC 60076-7 offers recommendations for the specification and loading of power transformers with regard to operating temperature and thermal ageing. This work will focus on the hot spot and top oil temperature of a transformer. The result shows that by changing the ambient temperature by 10 degrees will give effect to the hot spot and top oil temperature and therefore, the ratings of the transformer will also be affected.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133571391","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 : 2023-06-12DOI: 10.1109/APL57308.2023.10181607
Yasuharu Yamada
SITs (Surge Isolation Transformers) are products that have enhanced withstand voltage performance against surges by enhancing the withstand voltage performance of isolation transformers. In addition, SITs can greatly attenuate common mode surges. Because of this performance, it can build a safer LPZ (Lightning Protection Zone) by using it in combination with SPDs (Surge Protective Devices). This document provides the performance of SIT and its performance when combined with SPD.
{"title":"Surge protection with SPDs and SITs","authors":"Yasuharu Yamada","doi":"10.1109/APL57308.2023.10181607","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181607","url":null,"abstract":"SITs (Surge Isolation Transformers) are products that have enhanced withstand voltage performance against surges by enhancing the withstand voltage performance of isolation transformers. In addition, SITs can greatly attenuate common mode surges. Because of this performance, it can build a safer LPZ (Lightning Protection Zone) by using it in combination with SPDs (Surge Protective Devices). This document provides the performance of SIT and its performance when combined with SPD.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115393853","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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