Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)最新文献
Pub Date : 1999-05-16DOI: 10.1109/PICA.1999.779395
B.D. Pitt, D.S. Kitschen
In the UK supply market, customers can purchase electricity from any supplier regardless of size and location. Accordingly there is special interest in understanding the nature of variations in load shape, to devise better competitive tariff structures and facilitate aggressive niche marketing. Utilities have databases of half-hourly loads too large to be interpreted by hand and eye; potentially valuable information is hidden therein which is not revealed by coarse statistics. The heterogeneity of response, the large number of predictors, and the sheer size of these databases impose severe theoretical and computational difficulties on load shape modeling. Data mining refers (in part) to the use of adaptive nonparametric models (which vary their strategy according to the local nature of the data) for efficiently discovering knowledge in just such databases. A method centering on adaptive decision tree clustering of load profiles is presented, and results utilising an actual database are discussed.
{"title":"Application of data mining techniques to load profiling","authors":"B.D. Pitt, D.S. Kitschen","doi":"10.1109/PICA.1999.779395","DOIUrl":"https://doi.org/10.1109/PICA.1999.779395","url":null,"abstract":"In the UK supply market, customers can purchase electricity from any supplier regardless of size and location. Accordingly there is special interest in understanding the nature of variations in load shape, to devise better competitive tariff structures and facilitate aggressive niche marketing. Utilities have databases of half-hourly loads too large to be interpreted by hand and eye; potentially valuable information is hidden therein which is not revealed by coarse statistics. The heterogeneity of response, the large number of predictors, and the sheer size of these databases impose severe theoretical and computational difficulties on load shape modeling. Data mining refers (in part) to the use of adaptive nonparametric models (which vary their strategy according to the local nature of the data) for efficiently discovering knowledge in just such databases. A method centering on adaptive decision tree clustering of load profiles is presented, and results utilising an actual database are discussed.","PeriodicalId":113146,"journal":{"name":"Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)","volume":"325 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133953513","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 : 1999-05-16DOI: 10.1109/PICA.1999.779396
R.E. Brown, A. Hanson, M. Marshall, H. Willis
This paper presents a load forecasting method that yields results useful for substation and feeder planning while providing a conceptually simple framework for data entry. The method couples existing system and load knowledge, load growth patterns and horizon year information to permit development of multiple scenarios for spatial load growth progression from existing land use patterns. In addition, the method allows for an intimate connection between the spatial load forecasting model, a circuit model, and a reliability model. This results in a fully integrated planning tool where the impact of load growth on both electrical performance and reliability performance can be quantified. This type of analysis will be critical for utilities subject to performance based rates.
{"title":"Reliability and capacity: a spatial load forecasting method for a performance based regulatory environment","authors":"R.E. Brown, A. Hanson, M. Marshall, H. Willis","doi":"10.1109/PICA.1999.779396","DOIUrl":"https://doi.org/10.1109/PICA.1999.779396","url":null,"abstract":"This paper presents a load forecasting method that yields results useful for substation and feeder planning while providing a conceptually simple framework for data entry. The method couples existing system and load knowledge, load growth patterns and horizon year information to permit development of multiple scenarios for spatial load growth progression from existing land use patterns. In addition, the method allows for an intimate connection between the spatial load forecasting model, a circuit model, and a reliability model. This results in a fully integrated planning tool where the impact of load growth on both electrical performance and reliability performance can be quantified. This type of analysis will be critical for utilities subject to performance based rates.","PeriodicalId":113146,"journal":{"name":"Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127474084","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 : 1999-05-16DOI: 10.1109/PICA.1999.779506
B.S. Gisin, M.V. Obessis, J. Mitsche
The rapid deregulation of the US power industry and the exploding number of bilateral transactions between control areas has necessitated the development of new tools and methods calculating and updating available transfer capability (ATC). ATC values must be rapidly updated for new capacity reservations, schedules or transactions. There is a strong demand to improve the uncertainty analysis of the ATC limits for a number of varying factors, including uncertainties in the location of the delivery and receiving points. New tools are required to compute capacity benefits and transmission reliability margins. This paper describes some of the novel practical methods for ATC sensitivity and uncertainty analysis that have been recently developed by the authors and have been used by numerous utilities in the US On large scale load flow cases with over 30,000 buses representing the entire Eastern interconnection.
{"title":"Practical methods for transfer limit analysis in the power industry deregulated environment","authors":"B.S. Gisin, M.V. Obessis, J. Mitsche","doi":"10.1109/PICA.1999.779506","DOIUrl":"https://doi.org/10.1109/PICA.1999.779506","url":null,"abstract":"The rapid deregulation of the US power industry and the exploding number of bilateral transactions between control areas has necessitated the development of new tools and methods calculating and updating available transfer capability (ATC). ATC values must be rapidly updated for new capacity reservations, schedules or transactions. There is a strong demand to improve the uncertainty analysis of the ATC limits for a number of varying factors, including uncertainties in the location of the delivery and receiving points. New tools are required to compute capacity benefits and transmission reliability margins. This paper describes some of the novel practical methods for ATC sensitivity and uncertainty analysis that have been recently developed by the authors and have been used by numerous utilities in the US On large scale load flow cases with over 30,000 buses representing the entire Eastern interconnection.","PeriodicalId":113146,"journal":{"name":"Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128361865","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 : 1999-05-16DOI: 10.1109/PICA.1999.779409
G. Chown, M. Coetzee
This paper describes the implementation of regulation as a competitive ancillary service in Eskom. Eskom is presently forming a grid operator business, which is responsible for buying ancillary services and providing a reliable transmission network. The process of defining system performance criteria is described. The total costing of the regulation service to a single coal-fired generator was done using EPRI cost calculations. The performance of an individual generator is calculated along the guidelines of NERC Policy 10, with no allowance for over-control. This performance criterion determines regulation performance and payment to the generator. Over 750 points an downloaded every 4 seconds from the energy management system. System performance and individual unit performance are calculated using standard packages. This information is then made available in near-real time on the Eskom internal web in graphic and tabular form. This allows each generator to continually see its actual performance.
{"title":"Implementation of regulation as an ancillary service in Eskom and the use of Eskom internal web for this service","authors":"G. Chown, M. Coetzee","doi":"10.1109/PICA.1999.779409","DOIUrl":"https://doi.org/10.1109/PICA.1999.779409","url":null,"abstract":"This paper describes the implementation of regulation as a competitive ancillary service in Eskom. Eskom is presently forming a grid operator business, which is responsible for buying ancillary services and providing a reliable transmission network. The process of defining system performance criteria is described. The total costing of the regulation service to a single coal-fired generator was done using EPRI cost calculations. The performance of an individual generator is calculated along the guidelines of NERC Policy 10, with no allowance for over-control. This performance criterion determines regulation performance and payment to the generator. Over 750 points an downloaded every 4 seconds from the energy management system. System performance and individual unit performance are calculated using standard packages. This information is then made available in near-real time on the Eskom internal web in graphic and tabular form. This allows each generator to continually see its actual performance.","PeriodicalId":113146,"journal":{"name":"Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114845695","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 : 1999-05-16DOI: 10.1109/PICA.1999.779392
H. Adleman, D. C. Haigh
The integration of applications has been a longtime goal of electric utilities, their business systems providers, and operations systems providers. In the past, application integration has been proposed but not successfully implemented because it failed to accommodate future technologies. This paper describes a computer architecture that not only delivers enterprise application integration solutions today, but also provides a framework that enables an easy evolution to tomorrow's technologies. This framework: is dynamic, because it allows for flexible workflow management and data re-mapping capabilities; enables application integration by providing interoperability of both data and functions across and between enterprise applications; and provides a foundation for expansion and evolution to new technologies using ANSI standard building blocks with proven integration capabilities today. This architecture, the utilities dynamic integration foundation, is illustrated by focusing on a solution for the needs of power distribution management.
{"title":"Dynamic integration foundation for the utilities industry","authors":"H. Adleman, D. C. Haigh","doi":"10.1109/PICA.1999.779392","DOIUrl":"https://doi.org/10.1109/PICA.1999.779392","url":null,"abstract":"The integration of applications has been a longtime goal of electric utilities, their business systems providers, and operations systems providers. In the past, application integration has been proposed but not successfully implemented because it failed to accommodate future technologies. This paper describes a computer architecture that not only delivers enterprise application integration solutions today, but also provides a framework that enables an easy evolution to tomorrow's technologies. This framework: is dynamic, because it allows for flexible workflow management and data re-mapping capabilities; enables application integration by providing interoperability of both data and functions across and between enterprise applications; and provides a foundation for expansion and evolution to new technologies using ANSI standard building blocks with proven integration capabilities today. This architecture, the utilities dynamic integration foundation, is illustrated by focusing on a solution for the needs of power distribution management.","PeriodicalId":113146,"journal":{"name":"Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134249466","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 : 1999-05-16DOI: 10.1109/PICA.1999.779393
Hua Li, H. Chiang, R. Jones
This paper describes an integrated system for developing an intelligent, electronic standards book with Internet capability. The developed electronic standards book contains computer-aided design (CAD) drawings with hyperlinks to descriptive text, material management data, and procedures for safety, operating, and installation. A unique aspect is the set of hyperlinks to an expert system shell that aids field workers as the company moves to a process-oriented environment. The developed electronic standards book resides on the corporate server and appears as a well-linked web site. The book also resides on CD-ROM for field crews and has the same web site appearance as the corporate version. The CD-ROM version receives update information from the server. The full Internet capability and a seamless switch between those two web sites, based on a comprehensive logic, is provided by our developed Standards Book Viewer which integrates the standard web browser MSIE 4.0. The integrated system is developed within a mixed language programming environment of Microsoft Visual++, Java, and HTML. The digitalization of the standards books is performed using an interactive approach.
{"title":"Integrated system for developing intelligent electronic standards book with Internet capability","authors":"Hua Li, H. Chiang, R. Jones","doi":"10.1109/PICA.1999.779393","DOIUrl":"https://doi.org/10.1109/PICA.1999.779393","url":null,"abstract":"This paper describes an integrated system for developing an intelligent, electronic standards book with Internet capability. The developed electronic standards book contains computer-aided design (CAD) drawings with hyperlinks to descriptive text, material management data, and procedures for safety, operating, and installation. A unique aspect is the set of hyperlinks to an expert system shell that aids field workers as the company moves to a process-oriented environment. The developed electronic standards book resides on the corporate server and appears as a well-linked web site. The book also resides on CD-ROM for field crews and has the same web site appearance as the corporate version. The CD-ROM version receives update information from the server. The full Internet capability and a seamless switch between those two web sites, based on a comprehensive logic, is provided by our developed Standards Book Viewer which integrates the standard web browser MSIE 4.0. The integrated system is developed within a mixed language programming environment of Microsoft Visual++, Java, and HTML. The digitalization of the standards books is performed using an interactive approach.","PeriodicalId":113146,"journal":{"name":"Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128960728","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 : 1999-05-16DOI: 10.1109/PICA.1999.779507
E. D. Tuglie, M. Dicorato, M. L. Scala, P. Scarpellini
This paper deals with the development of a nonlinear programming methodology for evaluating available transfer capability. The main feature of the approach is the capability to treat static and dynamic security constraints in a unique integrated piece of software. The algorithm has been implemented and tested on an actual power system.
{"title":"A static optimization approach to assess dynamic available transfer capability","authors":"E. D. Tuglie, M. Dicorato, M. L. Scala, P. Scarpellini","doi":"10.1109/PICA.1999.779507","DOIUrl":"https://doi.org/10.1109/PICA.1999.779507","url":null,"abstract":"This paper deals with the development of a nonlinear programming methodology for evaluating available transfer capability. The main feature of the approach is the capability to treat static and dynamic security constraints in a unique integrated piece of software. The algorithm has been implemented and tested on an actual power system.","PeriodicalId":113146,"journal":{"name":"Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)","volume":"365 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115861391","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 : 1999-05-16DOI: 10.1109/PICA.1999.779386
Daoyuan Zhang, Yajun Wang, P. Luh
With the deregulation of electric power systems, market participants are facing an important task of bidding energy to an independent system operator (ISO). This paper presents a model and a method for optimization-based bidding and self-scheduling where a utility bids part of its energy and self-schedules the rest as in New England. The model considers ISO bid selections and uncertain bidding information of other market participants. With appropriately simplified bidding and ISO models, closed-form ISO solutions are first obtained. These solutions are then plugged into the utility's bidding and self-scheduling model which is solved by using Lagrangian relaxation. Testing results show that the method effectively solves the problem with reasonable amount of CPU time.
{"title":"Optimization based bidding strategies in the deregulated market","authors":"Daoyuan Zhang, Yajun Wang, P. Luh","doi":"10.1109/PICA.1999.779386","DOIUrl":"https://doi.org/10.1109/PICA.1999.779386","url":null,"abstract":"With the deregulation of electric power systems, market participants are facing an important task of bidding energy to an independent system operator (ISO). This paper presents a model and a method for optimization-based bidding and self-scheduling where a utility bids part of its energy and self-schedules the rest as in New England. The model considers ISO bid selections and uncertain bidding information of other market participants. With appropriately simplified bidding and ISO models, closed-form ISO solutions are first obtained. These solutions are then plugged into the utility's bidding and self-scheduling model which is solved by using Lagrangian relaxation. Testing results show that the method effectively solves the problem with reasonable amount of CPU time.","PeriodicalId":113146,"journal":{"name":"Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131007383","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 : 1999-05-16DOI: 10.1109/PICA.1999.779515
M. Delfanti, G. Granelli, P. Marannino, M. Montagna
A procedure for solving the power capacitor placement problem is presented. The objective is to determine the minimum investment required to satisfy suitable reactive constraints. Due to the discrete nature of reactive compensation devices, optimal capacitor placement leads to a nonlinear programming problem with mixed (discrete and continuous) variables. It is solved with an iterative algorithm based on successive linearizations of the original nonlinear model. The mixed integer linear programming problem to be solved at each iteration of the procedure is tackled by applying both a deterministic method (branch and bound) and genetic algorithm techniques. A hybrid procedure, aiming to exploit the best features of both algorithms is also considered. The proposed procedures are tested and compared with reference to a small CIGRE system and two actual networks derived from the Italian transmission and distribution system.
{"title":"Optimal capacitor placement using deterministic and genetic algorithms","authors":"M. Delfanti, G. Granelli, P. Marannino, M. Montagna","doi":"10.1109/PICA.1999.779515","DOIUrl":"https://doi.org/10.1109/PICA.1999.779515","url":null,"abstract":"A procedure for solving the power capacitor placement problem is presented. The objective is to determine the minimum investment required to satisfy suitable reactive constraints. Due to the discrete nature of reactive compensation devices, optimal capacitor placement leads to a nonlinear programming problem with mixed (discrete and continuous) variables. It is solved with an iterative algorithm based on successive linearizations of the original nonlinear model. The mixed integer linear programming problem to be solved at each iteration of the procedure is tackled by applying both a deterministic method (branch and bound) and genetic algorithm techniques. A hybrid procedure, aiming to exploit the best features of both algorithms is also considered. The proposed procedures are tested and compared with reference to a small CIGRE system and two actual networks derived from the Italian transmission and distribution system.","PeriodicalId":113146,"journal":{"name":"Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115265260","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 : 1999-05-16DOI: 10.1109/PICA.1999.779505
G. Ejebe, J. Waight, M. Santos-Nieto, W. Tinney
This paper presents a detailed formulation and implementation of a fast program for power system available transfer capability (ATC) calculations. The formulation is based on the linear incremental power flow to account for the line flow thermal loading effects. An efficient linear ATC implementation enhances speed in processing a large number of contingencies to determine ATC for each specified transfer. Test and performance results for practical power system models are presented.
{"title":"Fast calculation of linear available transfer capability","authors":"G. Ejebe, J. Waight, M. Santos-Nieto, W. Tinney","doi":"10.1109/PICA.1999.779505","DOIUrl":"https://doi.org/10.1109/PICA.1999.779505","url":null,"abstract":"This paper presents a detailed formulation and implementation of a fast program for power system available transfer capability (ATC) calculations. The formulation is based on the linear incremental power flow to account for the line flow thermal loading effects. An efficient linear ATC implementation enhances speed in processing a large number of contingencies to determine ATC for each specified transfer. Test and performance results for practical power system models are presented.","PeriodicalId":113146,"journal":{"name":"Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127457549","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}
Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)
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：