J. Griffith, S. Erwin, J. T. Wood, K. Le, J. Day, C. K. Yin
The authors describe the software tools that are currently used at Southern Company Services, Inc. (SCS) to perform postanalysis and present two case studies to illustrate the use of the tools in the day-to-day operating environment. This postanalysis practice has proved to be very effective in enhancing the cost awareness among system dispatchers and sharpening their intuitive knowledge about overall system economics. By running postanalysis on a daily basis, SCS observed a number of concrete benefits: (1) with postanalysis, dispatchers have concrete feedback on how well the system was dispatched the previous day; (2) a target ration can be established to monitor the real-time pool performance; and (3) through postanalysis, the benefits for improving various aspects of system operation can be easily and reliably quantified.<>
作者描述了目前在Southern Company Services, Inc. (SCS)用于执行后期分析的软件工具，并提供了两个案例研究来说明这些工具在日常操作环境中的使用。事实证明，这种事后分析的做法在提高系统调度员的成本意识和增强他们对整个系统经济的直观认识方面非常有效。通过每天运行后分析，SCS观察到一些具体的好处:(1)通过后分析，调度员对系统前一天的调度情况有具体的反馈;(2)可以建立目标比率来监控池的实时性能;(3)通过事后分析，可以方便、可靠地量化改进系统运行各方面的效益。
{"title":"Using a cost-reconstruction tool to analyze historical system operation","authors":"J. Griffith, S. Erwin, J. T. Wood, K. Le, J. Day, C. K. Yin","doi":"10.1109/PICA.1989.39011","DOIUrl":"https://doi.org/10.1109/PICA.1989.39011","url":null,"abstract":"The authors describe the software tools that are currently used at Southern Company Services, Inc. (SCS) to perform postanalysis and present two case studies to illustrate the use of the tools in the day-to-day operating environment. This postanalysis practice has proved to be very effective in enhancing the cost awareness among system dispatchers and sharpening their intuitive knowledge about overall system economics. By running postanalysis on a daily basis, SCS observed a number of concrete benefits: (1) with postanalysis, dispatchers have concrete feedback on how well the system was dispatched the previous day; (2) a target ration can be established to monitor the real-time pool performance; and (3) through postanalysis, the benefits for improving various aspects of system operation can be easily and reliably quantified.<<ETX>>","PeriodicalId":371044,"journal":{"name":"Conference Papers Power Industry Computer Application Conference","volume":"255 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123235162","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}
The authors describe a project in which the capabilities of fast phasor measurements were applied to power system problems. They describe the phasor measurement units and the central host of the monitoring system, the expected kinds of power system dynamics that are sensed and recorded, the anticipated triggering problems, and an analysis of initial siting considerations. In addition, the following applications of phasor measurement are discussed: disturbance monitoring, system protection and state estimation.<>
{"title":"Applications of fast phasor measurements on utility systems","authors":"R. Schulz, L. Vanslyck, S. Horowitz","doi":"10.1109/PICA.1989.38973","DOIUrl":"https://doi.org/10.1109/PICA.1989.38973","url":null,"abstract":"The authors describe a project in which the capabilities of fast phasor measurements were applied to power system problems. They describe the phasor measurement units and the central host of the monitoring system, the expected kinds of power system dynamics that are sensed and recorded, the anticipated triggering problems, and an analysis of initial siting considerations. In addition, the following applications of phasor measurement are discussed: disturbance monitoring, system protection and state estimation.<<ETX>>","PeriodicalId":371044,"journal":{"name":"Conference Papers Power Industry Computer Application Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114138794","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}
D. J. Boratynska-Stadnicka, M. Lauby, J. V. Van Ness
The authors describe the utilization of SYREL, a computer program which finds the upper and lower bounds on the reliability indices for an electric utility system. It tests a list of contingencies for violations of line loadings or voltage limits, and then uses the results from that to compute the reliability indices by a tree search. These two parts of the program have been modified to run on a hypercube computer. A major change that had to be made in the program in order to utilize the capability of the hypercube was to move the storage of the contingency evaluation results that would be used in the tree enumeration from the disk to the large memory available in each node. A commercial unit, the iPSC/1-MXD4, was used in the program development. A later and more powerful model, the iPSC/2, became available for testing at the end of the project, and test results on it are included.<>
{"title":"Converting an existing computer code to a hypercube computer","authors":"D. J. Boratynska-Stadnicka, M. Lauby, J. V. Van Ness","doi":"10.1109/PICA.1989.39022","DOIUrl":"https://doi.org/10.1109/PICA.1989.39022","url":null,"abstract":"The authors describe the utilization of SYREL, a computer program which finds the upper and lower bounds on the reliability indices for an electric utility system. It tests a list of contingencies for violations of line loadings or voltage limits, and then uses the results from that to compute the reliability indices by a tree search. These two parts of the program have been modified to run on a hypercube computer. A major change that had to be made in the program in order to utilize the capability of the hypercube was to move the storage of the contingency evaluation results that would be used in the tree enumeration from the disk to the large memory available in each node. A commercial unit, the iPSC/1-MXD4, was used in the program development. A later and more powerful model, the iPSC/2, became available for testing at the end of the project, and test results on it are included.<<ETX>>","PeriodicalId":371044,"journal":{"name":"Conference Papers Power Industry Computer Application Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125001857","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}
The authors describe a prototype for a hybrid expert system developed to provide advice to station operators in real time. The domain of this expert system is transmission planning as applied to real-time operation. It consists of symbolic and procedural modules that address a variety of electrical concerns at generating stations, including breaker thermal duties, breaker fault duties, and voltage-critical load buses. Once the system is invoked, the prevailing operating state is evaluated for static security-limit violations. If any violations are encouraged, the system searches its knowledge base for plausible plans to alleviate the problem.<>
{"title":"Decision support system for substation operation","authors":"I. Dabbaghchi, Richard J Gursky","doi":"10.1109/PICA.1989.38988","DOIUrl":"https://doi.org/10.1109/PICA.1989.38988","url":null,"abstract":"The authors describe a prototype for a hybrid expert system developed to provide advice to station operators in real time. The domain of this expert system is transmission planning as applied to real-time operation. It consists of symbolic and procedural modules that address a variety of electrical concerns at generating stations, including breaker thermal duties, breaker fault duties, and voltage-critical load buses. Once the system is invoked, the prevailing operating state is evaluated for static security-limit violations. If any violations are encouraged, the system searches its knowledge base for plausible plans to alleviate the problem.<<ETX>>","PeriodicalId":371044,"journal":{"name":"Conference Papers Power Industry Computer Application Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115540583","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}
A review is provided of the sparse formulation of the transient energy function direct stability method with emphasis placed on the issue of mode-of-disturbance selection. The approximate procedure for maximizing the potential energy margin is presented. This is verified by comparative simulations with time-domain techniques. The variations of worst voltage dips and transient energy margins with fault clearing times are illustrated. An application involving the use of postfault capacitor switching to improve the voltage dip stability margin is described. A simplified voltage dip computational approach is proposed and illustrated. All these developments are used in a specification for a modified direct stability program with voltage dip criteria for stability assessment and enhancement.<>
{"title":"Voltage dip at maximum angular swing in the context of direct stability analysis (of power systems)","authors":"A. Debs","doi":"10.1109/PICA.1989.39018","DOIUrl":"https://doi.org/10.1109/PICA.1989.39018","url":null,"abstract":"A review is provided of the sparse formulation of the transient energy function direct stability method with emphasis placed on the issue of mode-of-disturbance selection. The approximate procedure for maximizing the potential energy margin is presented. This is verified by comparative simulations with time-domain techniques. The variations of worst voltage dips and transient energy margins with fault clearing times are illustrated. An application involving the use of postfault capacitor switching to improve the voltage dip stability margin is described. A simplified voltage dip computational approach is proposed and illustrated. All these developments are used in a specification for a modified direct stability program with voltage dip criteria for stability assessment and enhancement.<<ETX>>","PeriodicalId":371044,"journal":{"name":"Conference Papers Power Industry Computer Application Conference","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133974212","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}
S. Calicchio, M. Rodrigues, A.V. Garcia, A. Morelato, A. Monticelli
A status report is presented on a project aimed at implementing new technologies, such as concurrent processing, object-oriented programming, and artificial intelligence techniques, in distribution system control centers. The applications functions include monitoring, diagnosing, switching, and service restoration. A major concern in implementing such technologies is how best to interface existing software (number crunching) with the new tools. The project investigates the possibility of solving the integration problem by using conventional language extensions for coding the new applications. All the required extensions are based on a distributed real-time system which supports process-spawning and message-passing. This project forms part of a more general effort which includes applications to a broader class of power system problems and to such areas as the real-time control of telephony switching systems.<>
{"title":"An evolutionary approach to applications software for distribution power system control centers","authors":"S. Calicchio, M. Rodrigues, A.V. Garcia, A. Morelato, A. Monticelli","doi":"10.1109/PICA.1989.38986","DOIUrl":"https://doi.org/10.1109/PICA.1989.38986","url":null,"abstract":"A status report is presented on a project aimed at implementing new technologies, such as concurrent processing, object-oriented programming, and artificial intelligence techniques, in distribution system control centers. The applications functions include monitoring, diagnosing, switching, and service restoration. A major concern in implementing such technologies is how best to interface existing software (number crunching) with the new tools. The project investigates the possibility of solving the integration problem by using conventional language extensions for coding the new applications. All the required extensions are based on a distributed real-time system which supports process-spawning and message-passing. This project forms part of a more general effort which includes applications to a broader class of power system problems and to such areas as the real-time control of telephony switching systems.<<ETX>>","PeriodicalId":371044,"journal":{"name":"Conference Papers Power Industry Computer Application Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132284311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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