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IEEE/PES Transmission and Distribution Conference and Exhibition最新文献

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New maintenance method of circuit breaker driving by DC solenoid making use of the closing current waveform measurement 利用合闸电流波形测量的直流螺线管驱动断路器维修新方法
IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1177575
T. Sugimoto, T. Watanabe, I. Iwamoto
{"title":"New maintenance method of circuit breaker driving by DC solenoid making use of the closing current waveform measurement","authors":"T. Sugimoto, T. Watanabe, I. Iwamoto","doi":"10.1109/TDC.2002.1177575","DOIUrl":"https://doi.org/10.1109/TDC.2002.1177575","url":null,"abstract":"Maintenance style of electric power facilities such as power stations, substations and switching stations has been changed from lime Based Maintenance (TBM) which implements maintenance every constant period, to Condition Based Maintenance (CBM) which changes maintenance schedule by the condition of the equipment. Yet CB driving by DC solenoid magnet would be short of checking condition. Specifically, the analysis of close operation process was not found fully for the maintenance method of the CB, so the defect and degradation in driving gear were not discovered. Therefore, close operation current waveform measurement has been developed as a new maintenance method of the CB. In detail, a). The systematic diagram, which makes to find the failure position by analyzing the deformation of waveform on the site, has been developed. b). The numerical management method, which is gotten to divide the waveform, has been worked out. This paper deals with the development circumstances and results of the new maintenance method.","PeriodicalId":289535,"journal":{"name":"IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123284372","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: 9
PMU based midterm stability evaluation of wide-area power system 基于PMU的广域电力系统中期稳定性评估
IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1176852
Y. Ota, H. Ukai, K. Nakamura, H. Fujita
{"title":"PMU based midterm stability evaluation of wide-area power system","authors":"Y. Ota, H. Ukai, K. Nakamura, H. Fujita","doi":"10.1109/TDC.2002.1176852","DOIUrl":"https://doi.org/10.1109/TDC.2002.1176852","url":null,"abstract":"Since the aspect of instability phenomena during midterm is complicated, the stability analysis is significant in order to keep the power system stable. Synchronized phasor angles obtained by the PMU (phasor measurement unit) provide the effective information for evaluating the stability of a bulk power system. This paper proposes a midterm stability evaluation method of the wide-area power system by using the synchronized phasor measurements. Clustering and aggregating the power system to some coherent generator groups, the stability margin of each coherent group is quantitatively evaluated on the basis of the one machine and infinite bus system. The midterm stability of a longitudinal power system model of Japanese 60 Hz systems constructed by the PSA (Power System Analyzer), which is a hybrid-type power system simulator, is practically evaluated using the proposed method.","PeriodicalId":289535,"journal":{"name":"IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123606125","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: 23
Nonlinear control of one-machine power system by exact linearization using optimal parameters 采用最优参数精确线性化的单机电力系统非线性控制
IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1178284
S. Kawomoto, M. Fujii
{"title":"Nonlinear control of one-machine power system by exact linearization using optimal parameters","authors":"S. Kawomoto, M. Fujii","doi":"10.1109/TDC.2002.1178284","DOIUrl":"https://doi.org/10.1109/TDC.2002.1178284","url":null,"abstract":"The aim of this paper is to newly introduce optimal parameters to the exact linearization, and to apply the proposed method to the nonlinear control of one-machine power system. First, the method introducing parameters is formulated, and the one-machine model system is treated as an example for the application. Then, the power system is exactly linearized without any approximation by the proposed method, and control responses depending on the parameters are numerically calculated. Finally, it is concluded that the method introducing the parameters gives fairly improved control responses of the original power system than the usual exact linearization does.","PeriodicalId":289535,"journal":{"name":"IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123692726","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: 13
Investigation results on semiconducting glaze and polymer insulators removed from a heavy contamination condition in China 在国内重污染条件下制备半导体釉料和聚合物绝缘体的研究结果
IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1177803
L. Wang, Y.S. Liu, Z. Liu, T. Imakoma, O. Fujii, K. Kondo
{"title":"Investigation results on semiconducting glaze and polymer insulators removed from a heavy contamination condition in China","authors":"L. Wang, Y.S. Liu, Z. Liu, T. Imakoma, O. Fujii, K. Kondo","doi":"10.1109/TDC.2002.1177803","DOIUrl":"https://doi.org/10.1109/TDC.2002.1177803","url":null,"abstract":"This paper describes the investigation results of semiconducting glaze porcelain and silicone rubber polymer insulators removed from the transmission line under a heavy contaminated condition, the suburbs of Tianjin in China for 5 years in order to evaluate the long-term reliability of these insulators. Specimen insulator units were removed from the transmission lines periodically and some electrical and mechanical evaluations were carried out. From the evaluation results, no harmful deterioration on the removed semiconducting glaze and polymer insulator surfaces was observed.","PeriodicalId":289535,"journal":{"name":"IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115206834","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 calculation of transient overvoltage for rationalization of insulation design of 22 kV cable system 22kv电缆系统暂态过电压的计算，使绝缘设计合理化
IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1177657
K. Oka, T. Hirai, K. Murata, E. Hashimoto, Y. Ariga
{"title":"A calculation of transient overvoltage for rationalization of insulation design of 22 kV cable system","authors":"K. Oka, T. Hirai, K. Murata, E. Hashimoto, Y. Ariga","doi":"10.1109/TDC.2002.1177657","DOIUrl":"https://doi.org/10.1109/TDC.2002.1177657","url":null,"abstract":"This paper presents a new approach for a reduction of test voltage for power distribution equipment of 22 kV cable system. EMTP calculations are used in this examination for rationalization of insulation design of 22 kV cable system. From the result of parameter analysis by the typical model of 22 kV cable system, the system condition of distribution line that causes the largest transient overvoltage is determined. In the case of switching surge, there is little relationship between neutral resistance and the overvoltage, and then the maximum per unit value of abnormal voltage is approximately 2 pu. On the other side, in the case of fault surge, the overvoltage increases as the neutral resistance increases, and then the maximum per unit value of the abnormal voltage becomes 2.68 pu. According to the above results, the conventional test voltage for 22 kV distribution equipment could be reduced by approximately 20%.","PeriodicalId":289535,"journal":{"name":"IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115337255","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
Scaling of high current GIS contact thermal stability 大电流GIS接触热稳定性的标度研究
IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1178267
S. Boggs, S. Nishiwaki, M. Toyoda, J. Kuang
{"title":"Scaling of high current GIS contact thermal stability","authors":"S. Boggs, S. Nishiwaki, M. Toyoda, J. Kuang","doi":"10.1109/TDC.2002.1178267","DOIUrl":"https://doi.org/10.1109/TDC.2002.1178267","url":null,"abstract":"When two pieces of metal are pushed together with moderate force as in a sliding high current contact, they typically touch at 10 to 50 spots which must carry all the current passing through the contact. The total contact area is determined by the force and hardness of the contact material; however, the number of contact spots and average area of each can vary with the nature of the contact surfaces. Through the use of transient nonlinear finite element analysis, we have solved for the temperature as a function of time in the contact spot to determine the conditions under which a spot is thermally stable. Based on this investigation, we have developed physically based scaling rules for thermal time constants and the maximum current for which the spot will be thermally stable. These scaling rules imply that the total current for stable contact operation goes as the square root of the number of contact spots, recognizing that the total contact area is fixed.","PeriodicalId":289535,"journal":{"name":"IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116145524","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
A study on a mutual grounding impedance and its transient characteristic 互接地阻抗及其暂态特性的研究
IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1177661
M. Nayel, A. Ametani, Y. Baba, N. Nagaoka, S. Sekioka
{"title":"A study on a mutual grounding impedance and its transient characteristic","authors":"M. Nayel, A. Ametani, Y. Baba, N. Nagaoka, S. Sekioka","doi":"10.1109/TDC.2002.1177661","DOIUrl":"https://doi.org/10.1109/TDC.2002.1177661","url":null,"abstract":"Self and mutual impedances of grounding electrodes are experimentally investigated for various grounding arrangements and electrode shapes. A transient induced voltage to an electrode is observed to be similar to transient voltages of the electrode and the inducing one when a step-like current is applied individually. Correspondingly, the frequency characteristic of the mutual impedance evaluated by numerical Fourier transform from the measured voltage and current is similar to that of the self impedance. An equivalent model circuit of the grounding impedance is derived from the frequency characteristic, and an EMTP simulation using the model circuit agrees reasonably well with the measured result.","PeriodicalId":289535,"journal":{"name":"IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116432457","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
66/77 kV transmission line arrester with new silicon rubber 66/77千伏输电线路避雷器，新型硅橡胶
IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1178506
M. Kan
{"title":"66/77 kV transmission line arrester with new silicon rubber","authors":"M. Kan","doi":"10.1109/TDC.2002.1178506","DOIUrl":"https://doi.org/10.1109/TDC.2002.1178506","url":null,"abstract":"The subject of the cost reduction of 66/77 kV transmission line arresters is discussed. In order to expand the application fully satisfying the large demands in 66/77 kV class, the remarkable cost reduction is needed. To realize this subject, the following concepts and technical resources would be applied in the future: (1) Light duty specification, which neglects the direct stroke to the power line. (2) The small and light-weight design with new silicon rubber (3) The application of the recent technological progress such as higher discharge energy capacity and higher gradient technology.","PeriodicalId":289535,"journal":{"name":"IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122825176","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
High-power testing: key to quality assurance of circuit breakers in a deregulated environment 大功率测试:在放松管制的环境下保证断路器质量的关键
IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1177693
R. Paul
{"title":"High-power testing: key to quality assurance of circuit breakers in a deregulated environment","authors":"R. Paul","doi":"10.1109/TDC.2002.1177693","DOIUrl":"https://doi.org/10.1109/TDC.2002.1177693","url":null,"abstract":"In the past, system operators (SO) and power companies had long term relations with some (mostly local) suppliers/manufacturers. The (sometimes) high costs of the components were not under discussion because the prime target was reliability and the ability to meet considerable growth in the (far) future. Nowadays SOs and power companies are in the process of privatization. Cost need to be reduced, the time span of planning is shortened and manufacturers from all over the world supply \"equal\" equipment. At the same time, technical expertise fades away from the equipment users and is (going to be) left in the hand of the supplier or is outsourced to third party consultants. Meanwhile the operation of the network is becoming more complicated due to a variety of economy-driven reasons. Its components have to cope with higher and more varying stresses. In this diffuse field, the independent certifying laboratories, nowadays more than before, play the important role to intermediate in the process of guaranteeing that key components (such as circuit breakers and power transformers) meet the requirements of the user, also in nonstandard situations.","PeriodicalId":289535,"journal":{"name":"IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"249 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114244726","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
New trends in protection relays and substation automation systems in Japan 日本继电保护和变电站自动化系统的新趋势
IEEE/PES Transmission and Distribution Conference and Exhibition Pub Date : 2002-10-06 DOI: 10.1109/TDC.2002.1178496
N. Kusano
{"title":"New trends in protection relays and substation automation systems in Japan","authors":"N. Kusano","doi":"10.1109/TDC.2002.1178496","DOIUrl":"https://doi.org/10.1109/TDC.2002.1178496","url":null,"abstract":"This paper describes the status and trends of the technical activities ongoing, as well as background circumstances, in protection and control systems in Japan to achieve ensuring stable power supply, improving efficiency, reducing cost, and protecting the natural environment at the same time. Several measures and systems accomplished to establish a reliable power supply network system are reported. Status on applying IT technologies to wide area communication and substation facilities are explained with several examples. Approaches to improve the reliability in the distribution substation are presented, followed by the anticipated effects of introducing distributed generation into the distribution networks.","PeriodicalId":289535,"journal":{"name":"IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114435510","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: 9
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