{"title":"Switching Of Disconnectros In Gis Laboratory And Field Tests","authors":"E. Kynasi, H. Luehrmann","doi":"10.1109/TPAS.1985.318823","DOIUrl":"https://doi.org/10.1109/TPAS.1985.318823","url":null,"abstract":"Field tests on the subject switching of capacitive currents with disconnectors were carried out in a 420 kV Gas Insulated Substation (GIS). The overvoltages and transients occurring were recorded at several points within the GIS while different disconnectors were operated.","PeriodicalId":227345,"journal":{"name":"IEEE Transactions on Power Apparatus and Systems","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125041600","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}
{"title":"Carrier Frequency Interference From HVDC Systems","authors":"Neal A. Patterson","doi":"10.1109/TPAS.1985.318839","DOIUrl":"https://doi.org/10.1109/TPAS.1985.318839","url":null,"abstract":"DC converter stations produce high levels of carrier frequency noise which can cause harmful interference to power-line carrier and open-wire carrier systems. The types of interference and coupling mechanisms are described. Calculation and measurement techniques and several suitable remedial measures are discussed. The app used on various HVdc projects are briefly described. Typical costs of carrier frequency filters are stated.","PeriodicalId":227345,"journal":{"name":"IEEE Transactions on Power Apparatus and Systems","volume":"PAS-104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128675184","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}
{"title":"A Tapping Range and Voltage Level Analysis Chart for Tap Changing Transformers","authors":"A. Baitch, R. Barr","doi":"10.1109/TPAS.1985.318841","DOIUrl":"https://doi.org/10.1109/TPAS.1985.318841","url":null,"abstract":"The operation of On Line Tap Changing (O.L.T.C.) transformers is subject to many power system variables and characteristics. These conditions include voltage variations, load fluctuations, transformer configurations and settings of tap changing relays. In this paper a graphical method is presented which simplifies analysis of O.L.T.C. transformer operation for variation in all the power system parameters. The graphical method eliminates the need for tedious repetitive calculations and allows the distribution engineer to readily determine transformer tapping requirements. The tapping range compatability of existing transformers can easily be determined in addition to the optimisation of system voltage float levels.","PeriodicalId":227345,"journal":{"name":"IEEE Transactions on Power Apparatus and Systems","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122004109","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}
{"title":"Iron Core Modeling For Electrical Transients","authors":"J. Avila-Rosales, A. Semlyen","doi":"10.1109/TPAS.1985.318829","DOIUrl":"https://doi.org/10.1109/TPAS.1985.318829","url":null,"abstract":"A model for the magnetizing branch of the single phase transformer or iron core reactor is presented for the calculations of transients. Eddy currents in the core and saturation are taken into account. The finite dimensional model results from the numerical approximation of the nonlinear partial differential equations representi the diffusion of the electromagnetic field in the laminations of the core [1]1. Second order central difference formulae, trapezoidal integrtiona (with damping, if desired ( 2D, and Newton's method are used for the numerical solution. A Norton/Thevenin equivalent for the core is developed to permit using it as a component in a complete transformer or reactor model.","PeriodicalId":227345,"journal":{"name":"IEEE Transactions on Power Apparatus and Systems","volume":"297 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124256919","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}
{"title":"Factors Affecting The Development Of An Industrial Customer Damage Function","authors":"R. Subramaniam, R. Billinton, G. Wacker","doi":"10.1109/TPAS.1985.318832","DOIUrl":"https://doi.org/10.1109/TPAS.1985.318832","url":null,"abstract":"Reliability cost/reliability worth assessment is an important aspect of power system planning and operation. Evaluation of reliability cost and its use by utility planners is becaning a standard procedure, while by cocmparison, evaluation of reliability worth is a relatively immnature and imprecise technique. This paper presents the results of an investigation of the effect, of standby equipment on consumption or demand normalized outage costs. A comprehensive study was conducted to find the outage costs for respondents with and without standby systems, ard the variation of the outage costs with time of the year, week and day. The paper then illustrates the development of a localized custamer damage function utilizing these data.","PeriodicalId":227345,"journal":{"name":"IEEE Transactions on Power Apparatus and Systems","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116758618","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}
J. Bunch, L. Demian, C. Gentz, K. Tanis, H. Fiedler
{"title":"A Distribution Automation Evaluation Using Digital Techniques","authors":"J. Bunch, L. Demian, C. Gentz, K. Tanis, H. Fiedler","doi":"10.1109/TPAS.1985.318826","DOIUrl":"https://doi.org/10.1109/TPAS.1985.318826","url":null,"abstract":"Digital computer programs, developed by Public Service Electric and Gas Company (PSE&G), for determination of revenue requirements for economic evaluation of distribution automation are described. Input requirements and typical output results are described for a part of the PSE&G distribution system using four types of financial analysis: continuing plant, short term, year-by-year, and break even. The programs are an integral part of the methodology for the evaluation of approximately 40 distribution automation functions and subfunctions. They provide economic results based on user input of necessary benefit, equipment requirement, economic factor and other distribution system characteristic information. Economic evaluation summaries are described to illustrate development of necessary data for economic evaluation.","PeriodicalId":227345,"journal":{"name":"IEEE Transactions on Power Apparatus and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133730086","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}
M. V. F. Pereira, L.M.V.G. Pinto, S. Cunha, G. Oliveira
{"title":"A Decomposition Approach To Automated Generation/Transmission Expansion Planning","authors":"M. V. F. Pereira, L.M.V.G. Pinto, S. Cunha, G. Oliveira","doi":"10.1109/TPAS.1985.318815","DOIUrl":"https://doi.org/10.1109/TPAS.1985.318815","url":null,"abstract":"This paper describes a model for automated generation/transmission expansion to be used in longterm system planning studies. The network is represented either by a transportation model or by a linearized power flow model. The solution technique is based on Benders decomposition, maximum flow algorithms and linear programming/optimal dispatch models. Case studies with the system of Southern Brazil are presented and discussed.","PeriodicalId":227345,"journal":{"name":"IEEE Transactions on Power Apparatus and Systems","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131506393","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}
{"title":"Power Calibration Standard Based On Digitally Synthesized Sinewaves","authors":"N. Oldham","doi":"10.1109/TPAS.1985.318820","DOIUrl":"https://doi.org/10.1109/TPAS.1985.318820","url":null,"abstract":"The unit of electric power at 60 Hz is often derived using impedance bridge techniques in which the alternating voltage is referred to the direct voltage standard through a thermal converter. An alternative calibration technique is described in which the ac to dc transfer is made through digital-to-analog converters (DACs) in the form of a dual-channel digital sinewave generator. The power is calculated from measurements of voltage, current, and phase angle, all of which rely on the accuracy of the digital generator and ultimately on the accuracy of the DACs. Measuirement uncertainties of less than 100 ppm have been achieved.","PeriodicalId":227345,"journal":{"name":"IEEE Transactions on Power Apparatus and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125513427","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}
{"title":"Novel Optimization Model For Long Range Distribution Planning","authors":"H. Youssef, R. Hackam, M. Abu-El-Magd","doi":"10.1109/TPAS.1985.318830","DOIUrl":"https://doi.org/10.1109/TPAS.1985.318830","url":null,"abstract":"A new model for both static and time-phased long range planning of large distribution systems is presented. The model takes into account both the fixed and the variable costs for all planned facilities (substations and feeders) as well as the cost of the power losses. The planning model incorporates an accurate formulation of the continuous non-linear cost function in terms of the planning variables (time and power flow through the expanding network). The model also gives the possibility of expanding the capacity of an existing feeder or a substation instead of constructing a new one. The formulation of the problem includes constraints on voltage drop in primary feeders, demand satisfaction constraints, power flow conservation constraints and constraints on feeders and substations overloading. In the present non-discrete model the number of the planning variables is reduced compared to the discrete models used hitherto and thus it is applicable to large distribution systems. Also because of the continuous nature of the formulation, it is suitable for non-linear applications such as contingency and reliability studies. The model has been applied to a section of an electric power utility (Ontario Hydro) distribution system. The results are compared to the findings of the utility earlier application of an optimization model.","PeriodicalId":227345,"journal":{"name":"IEEE Transactions on Power Apparatus and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130785457","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}
{"title":"Bad Data Identification Methods In Power System State Estimation-A Comparative Study","authors":"L. Mili, T. Cutsem, M. Ribbens-Pavella","doi":"10.1109/TPAS.1985.318945","DOIUrl":"https://doi.org/10.1109/TPAS.1985.318945","url":null,"abstract":"The identification techniques available today are first classified into three broad classes. Their behaviour with respect to selected criteria are then explored and assessed. Further, a series of simulations are carried out with various types of bad data. Investigating the way these identification techniques behave allows completing and validating the theoretical comparisons and conclusions.","PeriodicalId":227345,"journal":{"name":"IEEE Transactions on Power Apparatus and Systems","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129028840","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}