Pub Date : 2006-05-21DOI: 10.1109/TDC.2006.1668640
O. Visata, J. Bessede, G. Montillet
This study describes the development of new electrical contacts technology for high voltage (HV) applications, especially circuit breakers. A new type of arcing contact material, based on carbon/copper composite (C-Cu), has been compared with a more common one, based on tungsten/copper W-Cu material. It can be seen that carbon/copper composite materials is able to behave reasonably well. In particular, their erosion during switching tests was not excessive compared to those of W-Cu contacts. In addition, it is shown that, in some applications, the erosion of the circuit breaker nozzle due to arcing was lower than the one obtained with copper/tungsten composites. In parallel, the plasma composition calculations showed that, depending on conditions, graphite formation within the arcing chamber can be avoided. Such carbon/copper composite contacts present a promising technology
{"title":"New Type of Electrical Contacts for High Voltage Switchgear Applications","authors":"O. Visata, J. Bessede, G. Montillet","doi":"10.1109/TDC.2006.1668640","DOIUrl":"https://doi.org/10.1109/TDC.2006.1668640","url":null,"abstract":"This study describes the development of new electrical contacts technology for high voltage (HV) applications, especially circuit breakers. A new type of arcing contact material, based on carbon/copper composite (C-Cu), has been compared with a more common one, based on tungsten/copper W-Cu material. It can be seen that carbon/copper composite materials is able to behave reasonably well. In particular, their erosion during switching tests was not excessive compared to those of W-Cu contacts. In addition, it is shown that, in some applications, the erosion of the circuit breaker nozzle due to arcing was lower than the one obtained with copper/tungsten composites. In parallel, the plasma composition calculations showed that, depending on conditions, graphite formation within the arcing chamber can be avoided. Such carbon/copper composite contacts present a promising technology","PeriodicalId":123024,"journal":{"name":"2005/2006 IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130508464","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 : 2006-05-21DOI: 10.1109/TDC.2006.1668694
D. Chatrefou, J. Dupraz, G. Montillet
Further to papers presented two years ago, at the IEEE T&D in Dallas, on non conventional instrument transformers (NCIT), advancement of the interoperability between sensors and processes are updated. Electronic technology has dramatically evolved in the last decade and the consequence is the generalization of digital designs for merging-units (MU) and intelligent electronic devices (IDE). Digital apparatus are an obvious improvement in output accuracy. These digital apparatus offer many potential advantages and are expected to grow in importance in the next decade
{"title":"Interoperability Between Non Conventional Instrument Transformers (NCIT) and Intelligent Electronic Devices (IDE)","authors":"D. Chatrefou, J. Dupraz, G. Montillet","doi":"10.1109/TDC.2006.1668694","DOIUrl":"https://doi.org/10.1109/TDC.2006.1668694","url":null,"abstract":"Further to papers presented two years ago, at the IEEE T&D in Dallas, on non conventional instrument transformers (NCIT), advancement of the interoperability between sensors and processes are updated. Electronic technology has dramatically evolved in the last decade and the consequence is the generalization of digital designs for merging-units (MU) and intelligent electronic devices (IDE). Digital apparatus are an obvious improvement in output accuracy. These digital apparatus offer many potential advantages and are expected to grow in importance in the next decade","PeriodicalId":123024,"journal":{"name":"2005/2006 IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129185645","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 : 2006-05-21DOI: 10.1109/TDC.2006.1668496
K. Wang
Small, distributed resources provide benefits to both utilities and end users, and installation of these resources continues to grow in number. Small generators located at or near the loads they serve have the technical and economic advantage over large remote plants when siting, construction time, reliability, and operational flexibility are considered. Among these advantages include avoidance of significant grid construction and maintenance costs and improvements to utility grid performance. This presentation starts with a historical look at the evolution of steam turbine power stations from local, neighborhood-scale generators into huge, remote power plants in the 1960s. It also discusses the technical and economic impacts of DER on the existing grid infrastructure
{"title":"The DER Revolution and Right Sizing of Energy Resources","authors":"K. Wang","doi":"10.1109/TDC.2006.1668496","DOIUrl":"https://doi.org/10.1109/TDC.2006.1668496","url":null,"abstract":"Small, distributed resources provide benefits to both utilities and end users, and installation of these resources continues to grow in number. Small generators located at or near the loads they serve have the technical and economic advantage over large remote plants when siting, construction time, reliability, and operational flexibility are considered. Among these advantages include avoidance of significant grid construction and maintenance costs and improvements to utility grid performance. This presentation starts with a historical look at the evolution of steam turbine power stations from local, neighborhood-scale generators into huge, remote power plants in the 1960s. It also discusses the technical and economic impacts of DER on the existing grid infrastructure","PeriodicalId":123024,"journal":{"name":"2005/2006 IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129230623","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 : 2006-05-21DOI: 10.1109/TDC.2006.1668600
Xu Yan, Liu Qing, Wang Zeng-ping
This paper presents a new scheme for transformer differential protection based on the OCT. The scheme can operate reliably when internal faults occurred and do not operate in the condition of external faults, inrush and overexcitation. This scheme combines harmonic restraint and blocking methods with dc content blocking. In this paper, the digital signal processor (DSP) is applied to improve computation and render fast protection feasible. The novel transformer protection system interface construction, hardware structure, software algorithm are discussed. Performance analysis shows its has distinguish advantages over the traditional transformer protection
{"title":"Study on the Improved Transformer Protection Scheme Based on The OCT","authors":"Xu Yan, Liu Qing, Wang Zeng-ping","doi":"10.1109/TDC.2006.1668600","DOIUrl":"https://doi.org/10.1109/TDC.2006.1668600","url":null,"abstract":"This paper presents a new scheme for transformer differential protection based on the OCT. The scheme can operate reliably when internal faults occurred and do not operate in the condition of external faults, inrush and overexcitation. This scheme combines harmonic restraint and blocking methods with dc content blocking. In this paper, the digital signal processor (DSP) is applied to improve computation and render fast protection feasible. The novel transformer protection system interface construction, hardware structure, software algorithm are discussed. Performance analysis shows its has distinguish advantages over the traditional transformer protection","PeriodicalId":123024,"journal":{"name":"2005/2006 IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"2019 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120909495","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 : 2006-05-21DOI: 10.1109/TDC.2006.1668490
E. Gunther
IEEE Standard 519 is presently under revision and is expected to recommend that harmonic and interharmonic measurements be performed according to the method defined in IEC 61000-4-7. This summary paper and the associated presentation describe important aspects of the 61000-4-7 standard in the context of its intended use in the draft IEEE 519 standards
{"title":"Harmonic and Interharmonic Measurement According to IEEE 519 and IEC 61000-4-7","authors":"E. Gunther","doi":"10.1109/TDC.2006.1668490","DOIUrl":"https://doi.org/10.1109/TDC.2006.1668490","url":null,"abstract":"IEEE Standard 519 is presently under revision and is expected to recommend that harmonic and interharmonic measurements be performed according to the method defined in IEC 61000-4-7. This summary paper and the associated presentation describe important aspects of the 61000-4-7 standard in the context of its intended use in the draft IEEE 519 standards","PeriodicalId":123024,"journal":{"name":"2005/2006 IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127891643","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 : 2006-05-21DOI: 10.1109/TDC.2006.1668679
H. Caswell
As mergers and acquisitions were effected during the 1990's, many performance commitments were established for companies to ensure customers were not negatively impacted as a result of these transactions. Additionally, many companies simultaneously implemented outage management systems or other substantial process improvements that materially impact the resultant data from the systems. This paper presents one company's approach to comparing pre-and post-OMS reliability data, as well as other measurable factors, to establish performance target levels offered during the merger. In doing so, it demonstrates the importance of the use of appropriately categorized performance data to establish reliability trends and comparables, using the material developed within IEEE P1366-2003
{"title":"Use of Statistical Methods to Evaluate OMS Impact on Reliability Indices","authors":"H. Caswell","doi":"10.1109/TDC.2006.1668679","DOIUrl":"https://doi.org/10.1109/TDC.2006.1668679","url":null,"abstract":"As mergers and acquisitions were effected during the 1990's, many performance commitments were established for companies to ensure customers were not negatively impacted as a result of these transactions. Additionally, many companies simultaneously implemented outage management systems or other substantial process improvements that materially impact the resultant data from the systems. This paper presents one company's approach to comparing pre-and post-OMS reliability data, as well as other measurable factors, to establish performance target levels offered during the merger. In doing so, it demonstrates the importance of the use of appropriately categorized performance data to establish reliability trends and comparables, using the material developed within IEEE P1366-2003","PeriodicalId":123024,"journal":{"name":"2005/2006 IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128100513","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 : 2006-05-21DOI: 10.1109/TDC.2006.1668736
T. Nguyen, R. Gianto
This paper presents an approach for designing coordinated controllers of power system stabilizers (PSSs) and FACTS devices stabilizers for enhancing small-disturbance stability. The control co-ordination problem is formulated as a constrained optimization with eigenvalue-based objective function without any need for the linear approximation by which the sensitivities of eigenvalues of state matrix to controller parameters are formed. The eigenvalue-eigenvector equations are used as the equality constraints in the optimization. The controller parameters bounds are formulated as the inequality constraints. Simulation results show that the controller design approach is able to provide better damping and small-disturbance stability performance
{"title":"Application of Optimization Method for Control Co-ordination of PSSs and FACTS Devices to Enhance Small-Disturbance Stability","authors":"T. Nguyen, R. Gianto","doi":"10.1109/TDC.2006.1668736","DOIUrl":"https://doi.org/10.1109/TDC.2006.1668736","url":null,"abstract":"This paper presents an approach for designing coordinated controllers of power system stabilizers (PSSs) and FACTS devices stabilizers for enhancing small-disturbance stability. The control co-ordination problem is formulated as a constrained optimization with eigenvalue-based objective function without any need for the linear approximation by which the sensitivities of eigenvalues of state matrix to controller parameters are formed. The eigenvalue-eigenvector equations are used as the equality constraints in the optimization. The controller parameters bounds are formulated as the inequality constraints. Simulation results show that the controller design approach is able to provide better damping and small-disturbance stability performance","PeriodicalId":123024,"journal":{"name":"2005/2006 IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"212 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121618839","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 : 2006-05-21DOI: 10.1109/TDC.2006.1668486
T. Hope, R. Reymers
This paper addresses outsourcing from a contractor perspective that is tempered by the extensive utility experience of the lead author. Because the scarcity of in-house resources is most often the driver for outsourcing, the paper stresses the need to establish a target based on the minimum number of in-house resources available and then deploy an outsourcing approach that is consistent with that value. This effort needs to include the effort required to manage the outsourced portion of the work. The successful execution of an outsourced project and the ability to meet the resource target lie in minimizing the uncertainty surrounding the contractor's work scope. Since outsourced work will generally be awarded on a fixed price basis, it is critical that the contractor and the utility tightly define the scope of the effort and then aggressively manage to it. Although the paper identifies means of specifying, awarding and executing an outsourced project, investments in the initial request for proposal development effort will be most cost effective
{"title":"Outsourcing T&D Infrastructure Projects - ABB","authors":"T. Hope, R. Reymers","doi":"10.1109/TDC.2006.1668486","DOIUrl":"https://doi.org/10.1109/TDC.2006.1668486","url":null,"abstract":"This paper addresses outsourcing from a contractor perspective that is tempered by the extensive utility experience of the lead author. Because the scarcity of in-house resources is most often the driver for outsourcing, the paper stresses the need to establish a target based on the minimum number of in-house resources available and then deploy an outsourcing approach that is consistent with that value. This effort needs to include the effort required to manage the outsourced portion of the work. The successful execution of an outsourced project and the ability to meet the resource target lie in minimizing the uncertainty surrounding the contractor's work scope. Since outsourced work will generally be awarded on a fixed price basis, it is critical that the contractor and the utility tightly define the scope of the effort and then aggressively manage to it. Although the paper identifies means of specifying, awarding and executing an outsourced project, investments in the initial request for proposal development effort will be most cost effective","PeriodicalId":123024,"journal":{"name":"2005/2006 IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121743706","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 : 2006-05-21DOI: 10.1109/TDC.2006.1668483
Jong-su Yoon, B. Chang, Soo-yeol Kim, Y. Jeon, D. Baek
This paper describes the impact of the FACTS application on the power network using EMTDC simulation package. KEPCO (Korea Electric Power Corporation) has begun the operation of the plusmn80 MVA UPFC (unified power flow controller) from the year 2003 on the 154 kV transmission system. The UPFC consists of two voltage source inverters (VSI), STATCOM and SSSC, which are connected through a common DC link capacitor. Through a combination of both VSIs, the UPFC can control bus voltage, real and reactive power flow. But, in some cases, each VSI can be operated independently according to operation modes. After all, The UPFC can be operated 3 operation mode; SSSC, STATCOM and UPFC mode. The paper describes the fundamental operating effects and basic control approach of a SSSC mode operation of KEPCO UPFC to the power system
{"title":"EMTDC Simulation Model for FACTS Device","authors":"Jong-su Yoon, B. Chang, Soo-yeol Kim, Y. Jeon, D. Baek","doi":"10.1109/TDC.2006.1668483","DOIUrl":"https://doi.org/10.1109/TDC.2006.1668483","url":null,"abstract":"This paper describes the impact of the FACTS application on the power network using EMTDC simulation package. KEPCO (Korea Electric Power Corporation) has begun the operation of the plusmn80 MVA UPFC (unified power flow controller) from the year 2003 on the 154 kV transmission system. The UPFC consists of two voltage source inverters (VSI), STATCOM and SSSC, which are connected through a common DC link capacitor. Through a combination of both VSIs, the UPFC can control bus voltage, real and reactive power flow. But, in some cases, each VSI can be operated independently according to operation modes. After all, The UPFC can be operated 3 operation mode; SSSC, STATCOM and UPFC mode. The paper describes the fundamental operating effects and basic control approach of a SSSC mode operation of KEPCO UPFC to the power system","PeriodicalId":123024,"journal":{"name":"2005/2006 IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132018204","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 : 2006-05-21DOI: 10.1109/TDC.2006.1668689
P. Doig, C. Gunn, L. Durante, C. Burns, M. Cochrane
A system has been developed to enable the reuse of existing relay-class current transformers (CT) for revenue metering applications. In this paper, a new methodology demonstrates the ability to perform live, dynamic characterization and reclassification of existing relay-class CTs. The system relies on a highly accurate split-core reference current sensor that is live-line deployed at high voltage (HV) substations, and rated up to 765 kV. Through the comparison of the measurements from the reference current sensor and the existing relay-class CT, the system can produce error correction parameters for the reclassification of the existing CT. These error correction parameters are programmed into an advanced revenue meter, which in turn dynamically corrects and effectively reclassifies the accuracy rating of the existing relay-class CT. Experimental results from laboratory and field testing illustrate the effectiveness of the new system and its ability to increase the accuracy of the overall revenue metering system
{"title":"Reclassification of Relay-Class Current Transformers for Revenue Metering Applications","authors":"P. Doig, C. Gunn, L. Durante, C. Burns, M. Cochrane","doi":"10.1109/TDC.2006.1668689","DOIUrl":"https://doi.org/10.1109/TDC.2006.1668689","url":null,"abstract":"A system has been developed to enable the reuse of existing relay-class current transformers (CT) for revenue metering applications. In this paper, a new methodology demonstrates the ability to perform live, dynamic characterization and reclassification of existing relay-class CTs. The system relies on a highly accurate split-core reference current sensor that is live-line deployed at high voltage (HV) substations, and rated up to 765 kV. Through the comparison of the measurements from the reference current sensor and the existing relay-class CT, the system can produce error correction parameters for the reclassification of the existing CT. These error correction parameters are programmed into an advanced revenue meter, which in turn dynamically corrects and effectively reclassifies the accuracy rating of the existing relay-class CT. Experimental results from laboratory and field testing illustrate the effectiveness of the new system and its ability to increase the accuracy of the overall revenue metering system","PeriodicalId":123024,"journal":{"name":"2005/2006 IEEE/PES Transmission and Distribution Conference and Exhibition","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131235472","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：