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Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance最新文献

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Cracked insulators create hazardous working conditions during restoration after extreme ice storm 在极端冰暴后的修复过程中，破裂的绝缘体会造成危险的工作条件
Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Pub Date : 1995-10-29 DOI: 10.1109/TDCLLM.1995.485049
J. Pohlman, C.R. Davis
{"title":"Cracked insulators create hazardous working conditions during restoration after extreme ice storm","authors":"J. Pohlman, C.R. Davis","doi":"10.1109/TDCLLM.1995.485049","DOIUrl":"https://doi.org/10.1109/TDCLLM.1995.485049","url":null,"abstract":"On February 9 and 10, 1994, parts of the service territory of ENTERGY were subjected to an extreme ice storm that damaged over 2600 miles of overhead lines leaving more than 220,000 customers without power. Hundreds of linemen and support personnel were recruited from noneffected utilities in the surrounding territories and mobilized to make emergency restoration of power supply. While inventories of new materials were being brought in on an expedited basis, repair crews were encouraged to reuse components from damaged lines that appeared to still be in operational condition. Many porcelain insulators had been cracked internally by overloads resulting from heavy ice accretion. Such cracks can have subtle openings to the outside that are not visible from field inspection. Accordingly, some cracked insulators were contained in reinstalled dead-end strings. Subsequent rains filled the cracks with moisture. When it came time to reenergize restored lines, some of the dead-ended strings flashed over. Heat of the resulting power arc vaporized the moisture in the cracks creating tremendous pressures which, in turn, caused the insulator to explode. In some cases, the explosion expelled the pin, causing the conductor to drop and trip out the line. In all cases, the explosion sprayed sharp porcelain shrapnel over the surrounding area. The first contingency created delays in the quick restoration of power. The second, however, created a very dangerous hazard for repair personnel working in the area. This paper describes the design and deployment of a disciplined inspection program to locate and remove the dangerous insulators.","PeriodicalId":197796,"journal":{"name":"Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116367396","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}
引用次数: 6
Practical considerations for the applications of polymer post insulators in transmission class switch installations 聚合物柱式绝缘子在传输级开关装置中应用的实际考虑
Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Pub Date : 1995-10-29 DOI: 10.1109/TDCLLM.1995.485042
M.P. Gustek, T. Grisham, A. D. Crino
{"title":"Practical considerations for the applications of polymer post insulators in transmission class switch installations","authors":"M.P. Gustek, T. Grisham, A. D. Crino","doi":"10.1109/TDCLLM.1995.485042","DOIUrl":"https://doi.org/10.1109/TDCLLM.1995.485042","url":null,"abstract":"The demonstrated advantages of polymer insulators have been verified by field experience, and these products are becoming widely accepted for suspension and horizontal line post applications. The use of polymer station posts has been comparatively small and mostly limited to bus support applications. This document reviews the characteristics of polymer posts for vertical break switch applications. Information is presented which indicates that polymer station posts may be used as direct replacements for porcelain station posts in transmission class switch installations.","PeriodicalId":197796,"journal":{"name":"Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114629745","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}
引用次数: 1
Tubular steel transmission structures 钢管传动结构
Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Pub Date : 1995-10-29 DOI: 10.1109/TDCLLM.1995.485036
H. Heerspink
{"title":"Tubular steel transmission structures","authors":"H. Heerspink","doi":"10.1109/TDCLLM.1995.485036","DOIUrl":"https://doi.org/10.1109/TDCLLM.1995.485036","url":null,"abstract":"This paper shows that through the use of tubular steel products, transmission lines can be built economically when comparing this product against other products such as wood, lattice steel, tapered and other formed steel poles. H-frame, single and double circuit, single pole and Y-guyed structure designs has shown that the design of the tubular structure at all transmission voltage levels has proved itself to be a very good economical option, and a high quality transmission line design.","PeriodicalId":197796,"journal":{"name":"Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133324812","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}
引用次数: 0
Lightweight and low-cost HV-testing system with power frequency 轻便、低成本的工频高压测试系统
Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Pub Date : 1995-10-29 DOI: 10.1109/TDCLLM.1995.485054
Huang Weishu
{"title":"Lightweight and low-cost HV-testing system with power frequency","authors":"Huang Weishu","doi":"10.1109/TDCLLM.1995.485054","DOIUrl":"https://doi.org/10.1109/TDCLLM.1995.485054","url":null,"abstract":"A new type of 500 kV AC voltage testing system operating at power frequency was developed by the Electric Power Research Institute and has been used for electric power apparatus for 10 years. This AC voltage testing system consists of a reactor with fixed inductances and capacitors with step-adjusted capacities. This paper provides a summary of the development of this testing system. The major features of the testing system and experience with electric power apparatus onsite tests are also described in the paper.","PeriodicalId":197796,"journal":{"name":"Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125043435","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}
引用次数: 1
Considerations in the design of three phase compact transmission lines 三相紧凑型输电线路设计中的注意事项
Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Pub Date : 1995-10-29 DOI: 10.1109/TDCLLM.1995.485044
Thomas J. F. Ordon, K. Lindsey
{"title":"Considerations in the design of three phase compact transmission lines","authors":"Thomas J. F. Ordon, K. Lindsey","doi":"10.1109/TDCLLM.1995.485044","DOIUrl":"https://doi.org/10.1109/TDCLLM.1995.485044","url":null,"abstract":"Recent concerns of the public about possible health effects of magnetic fields has resulted in an increased emphasis on the use of compact transmission lines as a means of managing (i.e. reducing) magnetic fields. This paper examines how one utility, Niagara Mohawk Power Corporation, investigated 115 kV compact transmission configurations and used a full scale prototype to determine the impact of the proposed design on work practices.","PeriodicalId":197796,"journal":{"name":"Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128857075","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}
引用次数: 3
Use of portable protective gaps on the California-Oregon transmission project compact 550 kV line 在加州-俄勒冈州输电项目紧凑的550千伏线路上使用便携式保护间隙
Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Pub Date : 1995-10-29 DOI: 10.1109/TDCLLM.1995.485051
G. Gela, H. Kientz, D. Gillies, J. D. Mitchell, P. Lyons
{"title":"Use of portable protective gaps on the California-Oregon transmission project compact 550 kV line","authors":"G. Gela, H. Kientz, D. Gillies, J. D. Mitchell, P. Lyons","doi":"10.1109/TDCLLM.1995.485051","DOIUrl":"https://doi.org/10.1109/TDCLLM.1995.485051","url":null,"abstract":"This paper presents result of research on the application of a portable protective gap (PPG) to live work on a compact 550 kV steel lattice tower, The objective of the research was to provide experimental evidence which confirms the needed coordination of the PPG sparkover characteristics with the sparkover characteristics of the worksite on the compact tower during live work. Sparkover characteristics of the worksite are strongly affected by the presence of the worker, the live working tools, and damaged insulators.","PeriodicalId":197796,"journal":{"name":"Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance","volume":"198200 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116373605","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}
引用次数: 1
A testing research on composite air clearance for live line working on 500 kV DC transmission lines 500kv直流输电线路带电线路复合空气间隙试验研究
Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Pub Date : 1995-10-29 DOI: 10.1109/TDCLLM.1995.485055
Wang Ruzhang, Hunag Weishu, Yin Goxiang
{"title":"A testing research on composite air clearance for live line working on 500 kV DC transmission lines","authors":"Wang Ruzhang, Hunag Weishu, Yin Goxiang","doi":"10.1109/TDCLLM.1995.485055","DOIUrl":"https://doi.org/10.1109/TDCLLM.1995.485055","url":null,"abstract":"In this paper, the insulation characteristics of composite air clearances of both tension towers and suspension towers for live line working on 500 kV DC transmission lines are introduced. The tests are carried out in two ways. One is to simulate the man riding on the tension insulator strings moving to the conductor side. The other is to simulate the soft ladder carrying a man slipping to the conductor side along the slideway which is mounted on the crossarm. During the test, different working conditions are considered, such as tests with different switching impulse waveforms, the existence of damaged insulators within the string and so on. As a result, the safety and reliability of live line working on 500 kV DC power transmission lines has been confirmed.","PeriodicalId":197796,"journal":{"name":"Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133601449","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}
引用次数: 1
Accurate modelling of rod driven tower footing 杆驱动塔基础的精确建模
Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Pub Date : 1995-10-29 DOI: 10.1109/TDCLLM.1995.485038
M. Almeida, M. T. Correia de Barros
{"title":"Accurate modelling of rod driven tower footing","authors":"M. Almeida, M. T. Correia de Barros","doi":"10.1109/TDCLLM.1995.485038","DOIUrl":"https://doi.org/10.1109/TDCLLM.1995.485038","url":null,"abstract":"For evaluating the lightning performance of transmission lines by computer simulation, the accurate modelling of tower footing is very important. In particular, the decrease of the earth resistance observed for high values of the current flowing from the tower to earth has to be considered. In this paper, different modelling approaches allowing to take into account the nonlinear behaviour of the tower footing are overviewed, and a new model to describe the soil ionization process is presented. The proposed model corresponds to considering the ionized soil region as an equifield shell. In order to represent the ionization phenomena, the values of the resistivity on the ionized region are decreased according to the local current density, and the electric field is kept at a critical value. Deionization of the soil is also taken into account. Simulation results are presented, and compared to the published results of experimental tests.","PeriodicalId":197796,"journal":{"name":"Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117311199","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}
引用次数: 25
Electrical performance of conductive suits 导电套装的电气性能
Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Pub Date : 1995-10-29 DOI: 10.1109/TDCLLM.1995.485053
P. Hotte, G. Gela, J. D. Mitchell, P. Lyons
{"title":"Electrical performance of conductive suits","authors":"P. Hotte, G. Gela, J. D. Mitchell, P. Lyons","doi":"10.1109/TDCLLM.1995.485053","DOIUrl":"https://doi.org/10.1109/TDCLLM.1995.485053","url":null,"abstract":"Induced suit and body currents are described and evaluated. A suit and body resistance model is used to evaluate the effect on wearer comfort of suit resistance and suit-to-body bonding. Suit resistance is not constant, but depends on the measuring current. The resistance increases with laundering, and its effective value falls sharply in a strong electric field. Mechanisms are proposed to explain these effects. A recommendation is made regarding the maximum suit resistance.","PeriodicalId":197796,"journal":{"name":"Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123746873","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}
引用次数: 15
The effects of tension on vibration of all-dielectric self-supporting fiber optic cable 张力对全介质自支撑光缆振动的影响
Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Pub Date : 1995-10-29 DOI: 10.1109/TDCLLM.1995.485057
D. Sunkle, D. Christian
{"title":"The effects of tension on vibration of all-dielectric self-supporting fiber optic cable","authors":"D. Sunkle, D. Christian","doi":"10.1109/TDCLLM.1995.485057","DOIUrl":"https://doi.org/10.1109/TDCLLM.1995.485057","url":null,"abstract":"The vibration tendencies of conventional strand and conductor with regard to tension have been established for some time. The same cannot be said for all dielectric self-supporting (ADSS) fiber optic cables. This paper describes a field study undertaken to evaluate the effects of tension on the aeolian vibration levels of ADSS cable. In addition, tests were conducted to verify that vibration could be reduced with dampers. The investigation found that as tension increases on ADSS cables, so does the vibration severity.","PeriodicalId":197796,"journal":{"name":"Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127793535","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}
引用次数: 4
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