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03665 Genetic algorithm for open-loop distribution system design
06
06 ELECTRIC POWER
GENERATION AND UTILISATION Scientific,
Technical
Advanced materials ‘93, VI - Transactions of the 95103652 Materials Research Sot. of Japan Vol.19, Part A. Superconductors, surfaces and su erlattices. Part B. Frontiers in materials science and engineer Png Elsevier Science B.V., PO Box 211, 1000 AE Amsterdam, The Netherlands, DJ? 895.00, lJ.?$511.50, 1994, 1228~~. An approach to bulk power system performance 95103653 assessment Schilling, M. T. and Gomes, P. Electric tower Sysfems Rex, Feb. 1995, 32, (2), 145-151. The paper focuses on the main characteristics, basic concepts an& preliminaryhiantitative results of an integrated power system performance evaluation system, which is currently being developed in Brazil by several electrical utilities. Assessing the residential lighting efficiency oppor95103654 tunities In Guadalajara and Monterrey, Mexico Friedmann, R. and De Buen, 0. ( Energy Int. J., Feb. 1995, 20, (2), 151-159. 95103655 Breaking with tradition Sherry, S. Elect. Rev., Dec. 1994, 227, (24), 35-37. The article describes a new generatidn of miniature circuit breakers. Changes in distribution feeder pillars and cutouts 95103656 Mennell, T. W. Power Engng. J., Apr. 1495, 9, (2), 69-73. The requirements and standards for feeder pillars have advanced considerably in the last ten years, and continue to do so. The need for much improved operator safety, fewer restrictions in operation and more flexibility in use, has had and continues to have considerable influence on feeder pillar designs. Computer simulation of RAPS 95103657 Jennings, S. U. et al., Proc. Solar ‘94, ANZSES Administrator, PO Box 124, Caulfield East, VIC.3145, Australia.. Discusses the Energy SlMulation (ESIM) program, originating from the simulation program RAPSIM, which now incorporates the object-orientated programming features within C++ language, that are desirable for simulation. Hybrid, with or without renewable components, the stand-alone renewable energy systems can be simulated, meeting a variety of load types. Dayllght use In open-plan offices - The opportuni95103656 ties and the fantasies Bordass, B. et al., National Lightink Con&, Cambridge, UK, 1994, CIBSE, 251-259. Discusses lighting in open-plan offices. Points out that office buildings are also often very different from the contexts in which earlier research was done. Draws conclusions for future research and practice. 95103659 Design of compensation schemes for long AC transmission lines for maximum pqwer transfer limited by voltaae stabllitv Elect. Power & Energy Systems, Rzmar, K. aid Raviprakasha, M. S. 1995, 17, (2), 83-89. A general&d approach to reactive power management in AC transmission lines for maximum power transfer limited by voltage stability is considered. The transmission line is represented by its pi-equivalent model. Use of controlled shunt compensation and series and shunt compensation schemes are separately analysed for different load models and supported with illustrative examples. The voltage constraints are also taken into consideration during the design of compensation schemes. 95103660 Direct torque control of AC motor drlves Aaltonen, M. et al., AEB Review, 1995, (3), 19-24. Development of the speed-controlled AC motor drive has proceeded at an enormous pace in the last two decades, mainly as a consequence of advances in power electronics. New signal processing technology, for example, has opened the door to completely new control principles. One of the latest and most important innovations is Direct Torque Control (DTC). Developed by ABB, DTC exhibits outstanding control characteristics without pulse encoder feedback from the induction motor shaft. 95103661 Drives and controls Sacks, T. Elect. Rev., Feb. 1995, 228;(4), Z-30. A survey of current manufacturers and distributors of electric motors, drives and controls, including a three-page guide to companies world wide.
Electric power generation
and utilisation (scientific, technical)
95103662 Electrochemical membrane separation devices and the effect of networking Wimer, J. G. ehd., Gas Separation & Purification, 1995, 9, (2), 121-124. The US Department of Energy’s Morgantown Energy Technology Center (METC) sponsors the research and development for two technologies involving electrochemical membranes: fuel cells and separation devices. METC also works towards develo ing electric power generation systems which utilize both of these techno Pogles. The paper discusses the general theory and operation of electrochemical membrane separation devices, the advantages of networking them, and some potential applications. 95103663 EMC. Safe as houses Moehr, D. *Elect. Rev., Jan. 1995, 228, (2), 20-22. Discusses how the European Directive on electromagnetic will affect buildings and their installations.
compatibility
95103664 Evaluation of the transient performance of cascade induction motors Abedi, M. et-al., Electric Power Systems Rex, Feb. 1995, 32, (2), 133-140. The paper demonstrates an effective method to predict the transient performance of common-shaft cascade induction motors. This system is commonly used in deep well digging plant (i.e. oil wells). The transient events presented in this paper are obtained by using a PC based simulation %“gram. These events Include system starting, system loading and unloa mg, three-phase fault occurrence and clearance, disconnection and reconnection of the supply, and plugging. 95103665 Genetic algorithm for open-loop distribution system design Levitin, G. ef al., Electric Power Systems Res., Feb. 1995, 32, (2), 81-87. To ensure a given level of reliability of energy sup ly, distribution networks shoyld be configured in such a way that eat R load point may be supplied from alternative sources. The method proposed in this paper is aimed at designing such distribution systems with minimal feeder length, energy losses and load imbalance between transformers, subject to voltage drop and capacity constraints. The method is based on the biologically inspired genetic algorithm (GA). Basic GA procedures adapted to the given problem are presented and five versions of the GA are compared. Test results are reported which demonstrate that the chosen version of the proposed algorithm outperforms a heuristic procedure proposed previously. Handbook of batteries 95103666 Linden, D. (ed), McGraw-Hill, 1995, 1088 pp. This second edition covers all batteries and battery technology, with the emphasis on providing detailed, up-to-date information on the advantages, disadvantages, characteristics, properties and performance of all types of electric batteries and fuel cells. The book is written for the battery developer and technologist and the designer/engineer of battery-operated equipment and the battery user to enable them to determine the performance characteristics of batteries under all conditions of use. Harmonic compensation of Induction watthour 95103667 meter performance Chou, C. J. pnd Liu, C. C. Electric Power Systems Rex, Feb. 1995, 32, (2), 89-99. The paper analyzes the variation of the registration error of an induction watthour meter (IWHM) with respect to those parameters concerning the harmonic characteristics of the load and harmonic performance of the IWHM. Based on an analysis of the results of error variation, two types of compensation methods, namely, meter external methods and meter internal methods, are proposed to improve the accuracy of the IWHM when operated in harmonic situations. The meter external methods are related to the harmonic characteristics of the load, while the meter internal methods are associated with the harmonic performance of the IWHM. Each compensation method is comprised of several measures. The paper presents these measures for each compensation method, and gives detailed illustrations of the practical aspects for each measure. 95103666 Harmonics for nonelectrical englneers Peterson, C. D. Plant Engng., Dec. 1994, 48, (16), 88-90. Discusses the mechanical analogy for the effect of harmonics in an electrical power system generated by electronic equipment. Describes how they arise from rectifiers and solid state devices but can be reduced by the mechanical equivalent of a passive or active intelligent filter or parallel resonant circmt. Compares the two types of active harmonics compensator. 95103669 Impedance boundary condltlons In electromagnetlcs Hoppe, D. J. and Rahmat-Samii, Y. Taylor & Francis, 1900 Frost Road, Suite 101, Bristol, PA.19007, USA, 1995, 176 pp. Electromagnetic scattering from complex objects has been an area of indepth research for many years. A variety of owerful solution methodologies have been developed and utilized for tKe clever solution of increasingly complex problems. The book presents one such method, impedance boundary conditions, in a unified and thorough style. The book will prove valuable to researchers and scholars in the areas of electromagnetic scattering and advanced solution techniques.
Fuel and Energy Abstracts
July 1995
265
06 ELECTRIC POWER
GENERATION AND UTILISATION Scientific,
Technical
Advanced materials ‘93, VI - Transactions of the 95103652 Materials Research Sot. of Japan Vol.19, Part A. Superconductors, surfaces and su erlattices. Part B. Frontiers in materials science and engineer Png Elsevier Science B.V., PO Box 211, 1000 AE Amsterdam, The Netherlands, DJ? 895.00, lJ.?$511.50, 1994, 1228~~. An approach to bulk power system performance 95103653 assessment Schilling, M. T. and Gomes, P. Electric tower Sysfems Rex, Feb. 1995, 32, (2), 145-151. The paper focuses on the main characteristics, basic concepts an& preliminaryhiantitative results of an integrated power system performance evaluation system, which is currently being developed in Brazil by several electrical utilities. Assessing the residential lighting efficiency oppor95103654 tunities In Guadalajara and Monterrey, Mexico Friedmann, R. and De Buen, 0. ( Energy Int. J., Feb. 1995, 20, (2), 151-159. 95103655 Breaking with tradition Sherry, S. Elect. Rev., Dec. 1994, 227, (24), 35-37. The article describes a new generatidn of miniature circuit breakers. Changes in distribution feeder pillars and cutouts 95103656 Mennell, T. W. Power Engng. J., Apr. 1495, 9, (2), 69-73. The requirements and standards for feeder pillars have advanced considerably in the last ten years, and continue to do so. The need for much improved operator safety, fewer restrictions in operation and more flexibility in use, has had and continues to have considerable influence on feeder pillar designs. Computer simulation of RAPS 95103657 Jennings, S. U. et al., Proc. Solar ‘94, ANZSES Administrator, PO Box 124, Caulfield East, VIC.3145, Australia.. Discusses the Energy SlMulation (ESIM) program, originating from the simulation program RAPSIM, which now incorporates the object-orientated programming features within C++ language, that are desirable for simulation. Hybrid, with or without renewable components, the stand-alone renewable energy systems can be simulated, meeting a variety of load types. Dayllght use In open-plan offices - The opportuni95103656 ties and the fantasies Bordass, B. et al., National Lightink Con&, Cambridge, UK, 1994, CIBSE, 251-259. Discusses lighting in open-plan offices. Points out that office buildings are also often very different from the contexts in which earlier research was done. Draws conclusions for future research and practice. 95103659 Design of compensation schemes for long AC transmission lines for maximum pqwer transfer limited by voltaae stabllitv Elect. Power & Energy Systems, Rzmar, K. aid Raviprakasha, M. S. 1995, 17, (2), 83-89. A general&d approach to reactive power management in AC transmission lines for maximum power transfer limited by voltage stability is considered. The transmission line is represented by its pi-equivalent model. Use of controlled shunt compensation and series and shunt compensation schemes are separately analysed for different load models and supported with illustrative examples. The voltage constraints are also taken into consideration during the design of compensation schemes. 95103660 Direct torque control of AC motor drlves Aaltonen, M. et al., AEB Review, 1995, (3), 19-24. Development of the speed-controlled AC motor drive has proceeded at an enormous pace in the last two decades, mainly as a consequence of advances in power electronics. New signal processing technology, for example, has opened the door to completely new control principles. One of the latest and most important innovations is Direct Torque Control (DTC). Developed by ABB, DTC exhibits outstanding control characteristics without pulse encoder feedback from the induction motor shaft. 95103661 Drives and controls Sacks, T. Elect. Rev., Feb. 1995, 228;(4), Z-30. A survey of current manufacturers and distributors of electric motors, drives and controls, including a three-page guide to companies world wide.
Electric power generation
and utilisation (scientific, technical)
95103662 Electrochemical membrane separation devices and the effect of networking Wimer, J. G. ehd., Gas Separation & Purification, 1995, 9, (2), 121-124. The US Department of Energy’s Morgantown Energy Technology Center (METC) sponsors the research and development for two technologies involving electrochemical membranes: fuel cells and separation devices. METC also works towards develo ing electric power generation systems which utilize both of these techno Pogles. The paper discusses the general theory and operation of electrochemical membrane separation devices, the advantages of networking them, and some potential applications. 95103663 EMC. Safe as houses Moehr, D. *Elect. Rev., Jan. 1995, 228, (2), 20-22. Discusses how the European Directive on electromagnetic will affect buildings and their installations.
compatibility
95103664 Evaluation of the transient performance of cascade induction motors Abedi, M. et-al., Electric Power Systems Rex, Feb. 1995, 32, (2), 133-140. The paper demonstrates an effective method to predict the transient performance of common-shaft cascade induction motors. This system is commonly used in deep well digging plant (i.e. oil wells). The transient events presented in this paper are obtained by using a PC based simulation %“gram. These events Include system starting, system loading and unloa mg, three-phase fault occurrence and clearance, disconnection and reconnection of the supply, and plugging. 95103665 Genetic algorithm for open-loop distribution system design Levitin, G. ef al., Electric Power Systems Res., Feb. 1995, 32, (2), 81-87. To ensure a given level of reliability of energy sup ly, distribution networks shoyld be configured in such a way that eat R load point may be supplied from alternative sources. The method proposed in this paper is aimed at designing such distribution systems with minimal feeder length, energy losses and load imbalance between transformers, subject to voltage drop and capacity constraints. The method is based on the biologically inspired genetic algorithm (GA). Basic GA procedures adapted to the given problem are presented and five versions of the GA are compared. Test results are reported which demonstrate that the chosen version of the proposed algorithm outperforms a heuristic procedure proposed previously. Handbook of batteries 95103666 Linden, D. (ed), McGraw-Hill, 1995, 1088 pp. This second edition covers all batteries and battery technology, with the emphasis on providing detailed, up-to-date information on the advantages, disadvantages, characteristics, properties and performance of all types of electric batteries and fuel cells. The book is written for the battery developer and technologist and the designer/engineer of battery-operated equipment and the battery user to enable them to determine the performance characteristics of batteries under all conditions of use. Harmonic compensation of Induction watthour 95103667 meter performance Chou, C. J. pnd Liu, C. C. Electric Power Systems Rex, Feb. 1995, 32, (2), 89-99. The paper analyzes the variation of the registration error of an induction watthour meter (IWHM) with respect to those parameters concerning the harmonic characteristics of the load and harmonic performance of the IWHM. Based on an analysis of the results of error variation, two types of compensation methods, namely, meter external methods and meter internal methods, are proposed to improve the accuracy of the IWHM when operated in harmonic situations. The meter external methods are related to the harmonic characteristics of the load, while the meter internal methods are associated with the harmonic performance of the IWHM. Each compensation method is comprised of several measures. The paper presents these measures for each compensation method, and gives detailed illustrations of the practical aspects for each measure. 95103666 Harmonics for nonelectrical englneers Peterson, C. D. Plant Engng., Dec. 1994, 48, (16), 88-90. Discusses the mechanical analogy for the effect of harmonics in an electrical power system generated by electronic equipment. Describes how they arise from rectifiers and solid state devices but can be reduced by the mechanical equivalent of a passive or active intelligent filter or parallel resonant circmt. Compares the two types of active harmonics compensator. 95103669 Impedance boundary condltlons In electromagnetlcs Hoppe, D. J. and Rahmat-Samii, Y. Taylor & Francis, 1900 Frost Road, Suite 101, Bristol, PA.19007, USA, 1995, 176 pp. Electromagnetic scattering from complex objects has been an area of indepth research for many years. A variety of owerful solution methodologies have been developed and utilized for tKe clever solution of increasingly complex problems. The book presents one such method, impedance boundary conditions, in a unified and thorough style. The book will prove valuable to researchers and scholars in the areas of electromagnetic scattering and advanced solution techniques.
Fuel and Energy Abstracts
July 1995
265