- Email: [email protected]
00492 Selecting branch-circuit short-circuit protective devices
06
Electric power generation
96lQQ479
Power system harmonics. Part 3. Problems caused by distorted supplies (Tutorial) Yacamini,R. Power Engng. J., Oct. 1995, 9, (S), 233-238. The firstpartof thistutorialseries dealt with harmonic sources, the second with calculations and measurements. This third in the series deals with the effects of distortion and the fourth and last, to be published in near future, will discuss interharmonics. 96/00460
Power
system
protection.
1. Principles and
comoonents
IEE,‘Michael Faraday House, Six Hills Way, Stevenage, Herts, SGl 2AY, UK f69.00, 544 pp.
Power system protection. 2. Systems and methods 96lQQ461 IEE, Michael Faraday House, Sir Hills Way, Stevenage, Herts, SGl 2AY, UK f65.00, 344 pp. Power system protection. 3. Application 96/00462 IEE, Michael Faraday House, Six Hills Way, Stevenage, Herts, SGI 2AY, UK f67.00, 492 pp. QSlOO463
Power system protection. 4. Digital protection and
slgnalllng IEE, Michael Faraday House, Sk Hills Way, Stevenage, Herts, SGI 2AY, UK, f25.00, I32 pp.
Radiation effects on Insulators for superconductQsloo464 ing fusion magnets Humer, K. et al., Cryogenics, Dec. 1995, 35, (12), 871-882. Fibre-reinforced elastics (FRPs1 are candidate materials for the insulation of superconducting maghet c&Is in future fusion reactors. The paper reports on a test programme performed to assess the mechanical properties of these materials and to obtain information on the damage and fracture mechanisms.
96/00465 Rapid transmission capacity margin determination for dynamic security assessment using artificial neural netwoiks McCallev, J. D. and Krause, B. A. Electric Power Systems Res., Jul. 1995, 3&(l), 37-45. The paper presents a method for rapidly computing transmission capacity margin for security problems. The method uses an artifical neural network to model a delineating surface between the region of security and the region of insecurity in the space of most critical parameters. 96/00466
Real-time
slmulatlon
of a
twelve-pulse
full
converter
Haskew, T. A. and Byakod, R. Electric Power Systems Rex, Jul. 1995, 34, (l), 57-63. Describes a method for the real-time simulation of a twelve-pulse full converter. The method is based on a finite-difference simulation of the homogeneous state model of the converter with the inputs clamped over an integer multiple of solution time steps. The simulation code described was written in FORTRAN and executed on IBM RISC System/6000 machines.
Recent developments In decentrallsed mlnl-grld diesel power systems In Australla
96/00467
Nayar, C. V. Applied Energy, 1995, 52, (2), 229-242. Electrical energy for remote areas has traditionally been obtained from diesel-engine driven alternators characterised by high running costs, low efficiency and high maintenance. Hybrid energy systems integrate renewable enerev technoloeies with diesel generators. batteries. and inverters to provide Highly reliaae 24-h grid qualzy AC ower lo remote communities. The paper describes the application of hybri ‘8energy systems to the electrificatlon of remote communities in Australia. Results from a few field installations using solar and wind power are also included.
Recent progress of applled superconductlvlty In Ya, L. G. and Lin, L. Z. Cryogenics, Dec. 1995, 35, (12), 843-851. China has been involved for many years in the development of superconducting magnets for high energy physics, fusion research, magnetohydrodynamic power generation, magnetic separator, magnetic resonance imaging and other applications. The research activity in superconducting magnets has been intensified and diversified at the Institute of Electrical Engineering Academia Sinica and other laboratories. This paper reviews the recent progress of applied superconductivity in China. A possible future programme in also outlined m this paper.
Reduction of swltchlng overvoltages on composite feeders-transformer feeders
and utilisation (economics,
policy, supplies, forecasts)
96/00490
Redundancy Is key to Internal Revenue Service’s data centre reliability
Hughes, R. M. Consul. Specify Engr., Apr. 1995, 17, (4), 18-26. Describes how 15, 1500 kW diesel generators provide 20 MW Of standby power and reliability for a continuously-operating data centre. Nearly 12 MW of critical load is served by four UPS Systems.
96lOO491
Secondary llthlum batterles wlth Improved anodes and manufacture of the anodes
Mifuji, Y. et al., (Assigned to) Matsushita Electric Ind. Co.Ltd, JAP. Pat. JP.O7,73,86& Mar. 1995.
Selecting ::%:2 Valvoda, F. R. and Farrell,
branch-circuit shorttlrcult G. W.
protective
Consul. Specif: Engr., Jun. 1995, 17,
(7), 46-52. This is Part 29 of a series, and examines the protection of induction motors against short-circuit or earth faults. Quotes section 430-52 of the USA National Electrical Code.
96100493
State-of-the-art flbre-reinforced-plastic cryostats in
Japan
Okada, T. and Nishijima, S. Cryogenics, 1995, 35, (ll), 801-804. Fibre-reinforced-plastic (FRP) cryostats have been developed for various cryogenic fields, kuch as‘supeicoriducting magnets and cryogenic electronics. The FRP cryostats ought to be used as liquid-helium containers for the operation of a.c. and/or pulse superconducting magnets because the eddy current losses induced in the metallic cryostats would be too large to op&ate the magnets stably. They are also needed for SQUID (superconductina quantum interference device) operation because the metailic-cryostats di< turb the weak magnetic signals that are to be detected by the SQUID system. The material problems and possible answers are summarized. The construction of FRP cryostats is demonstrated. Recently developed FRP cryostats for practical applications in Japan are reviewed. 96100494 A study of swltchlng overvoltage8 on composite feeders-line-cable feeders Hamza, A. S. Energy Convers. Mgmt., Dec. 1995, 36, (12), 1153-1165. The study is concerned with the overvoltages produced as a result of switchine ooerations on comuosite feeders. this is when a circuit-breaker closes iti c&acts at the pea’k values of the applied voltage. Line-cable feeders are considered in the study. The means by which such overvoltages can be reduced are also included. Also, the eff&ts of system parameters and factors on the initial voltage applied and accompanied overvoltages are covered.
96tOQ495 Supplylng power on prescrlptlon Warland, S. Bldg. Serv. CIBSE J., Sep. 1995, 17, (9), 49-50. The article describes how 20 MVA of electrical power is supplied to the f700 million Glaxo-Wellcome Medicines Research Centre in Stevenage, UK. The system has been designed to be resilient and reliable. By fan cooling, the two 11 kV transformers are each capable of carrying the full load demand, and duplication of the incoming cables and the ring mains ensures a fault-tolerant supply.
96100496 TCC curves - A crltlcal element In protectlon y;t;da, F. and Farrell, G. W. Consul. Specif Engr., Apr. 1995, 17, (4), - . This is Pan 28 of a series, and examines the protection of induction motors against overload rather than short-circuits or earth faults. Quotes the safety requirements in section 430-31 in the USA National Electrical Code.
96100497 Voltage translents on restrlcted systems Byers, K. Simtars, Sep. 1995, 2, (4), 4-6. Typical sources of transient over voltages (TOV) in restricted systems due to various phenomena are discussed with TOV waveform examples recorded from tests conducted at a Bowen Basin coal mine (Australia). The mechanism by which TOVs are generated by switching of vacuum circuit breakers is described in detail.
Economics,
Policy, Supplies,
Forecasts
96lOQ409
Hamza, A. H. Energy Convers. Mgmt., Dec. 1995, 36, (12), 1139-1152. The paper describes fie overvoltage-produced on composite feeders when a circuit breaker closes at the peak of the applied voltage. Transformer feeders are considered. The means of reducing such overvoltages are also included, and the effect of the system parameters and factors on the initial voltage applied and the accompanying overvoltages are covered.
Analysls of electrlcal energy generatlon and consumption In Jordan
96100496
Tamimi, A. and O’Jailat, S. 1059-1062. Electrical energy generation discussed. The consumption expressed by polynomials of
Energy Convers. Mgmt., Nov. 1995,36,
(ll),
and consumption in Jordan are analysed and levels in various sectors were correlated and second or third degree with an error of +/-5%.
Fuel and Energy Abstracts January 1996 29
Electric power generation
96lQQ479
Power system harmonics. Part 3. Problems caused by distorted supplies (Tutorial) Yacamini,R. Power Engng. J., Oct. 1995, 9, (S), 233-238. The firstpartof thistutorialseries dealt with harmonic sources, the second with calculations and measurements. This third in the series deals with the effects of distortion and the fourth and last, to be published in near future, will discuss interharmonics. 96/00460
Power
system
protection.
1. Principles and
comoonents
IEE,‘Michael Faraday House, Six Hills Way, Stevenage, Herts, SGl 2AY, UK f69.00, 544 pp.
Power system protection. 2. Systems and methods 96lQQ461 IEE, Michael Faraday House, Sir Hills Way, Stevenage, Herts, SGl 2AY, UK f65.00, 344 pp. Power system protection. 3. Application 96/00462 IEE, Michael Faraday House, Six Hills Way, Stevenage, Herts, SGI 2AY, UK f67.00, 492 pp. QSlOO463
Power system protection. 4. Digital protection and
slgnalllng IEE, Michael Faraday House, Sk Hills Way, Stevenage, Herts, SGI 2AY, UK, f25.00, I32 pp.
Radiation effects on Insulators for superconductQsloo464 ing fusion magnets Humer, K. et al., Cryogenics, Dec. 1995, 35, (12), 871-882. Fibre-reinforced elastics (FRPs1 are candidate materials for the insulation of superconducting maghet c&Is in future fusion reactors. The paper reports on a test programme performed to assess the mechanical properties of these materials and to obtain information on the damage and fracture mechanisms.
96/00465 Rapid transmission capacity margin determination for dynamic security assessment using artificial neural netwoiks McCallev, J. D. and Krause, B. A. Electric Power Systems Res., Jul. 1995, 3&(l), 37-45. The paper presents a method for rapidly computing transmission capacity margin for security problems. The method uses an artifical neural network to model a delineating surface between the region of security and the region of insecurity in the space of most critical parameters. 96/00466
Real-time
slmulatlon
of a
twelve-pulse
full
converter
Haskew, T. A. and Byakod, R. Electric Power Systems Rex, Jul. 1995, 34, (l), 57-63. Describes a method for the real-time simulation of a twelve-pulse full converter. The method is based on a finite-difference simulation of the homogeneous state model of the converter with the inputs clamped over an integer multiple of solution time steps. The simulation code described was written in FORTRAN and executed on IBM RISC System/6000 machines.
Recent developments In decentrallsed mlnl-grld diesel power systems In Australla
96/00467
Nayar, C. V. Applied Energy, 1995, 52, (2), 229-242. Electrical energy for remote areas has traditionally been obtained from diesel-engine driven alternators characterised by high running costs, low efficiency and high maintenance. Hybrid energy systems integrate renewable enerev technoloeies with diesel generators. batteries. and inverters to provide Highly reliaae 24-h grid qualzy AC ower lo remote communities. The paper describes the application of hybri ‘8energy systems to the electrificatlon of remote communities in Australia. Results from a few field installations using solar and wind power are also included.
Recent progress of applled superconductlvlty In Ya, L. G. and Lin, L. Z. Cryogenics, Dec. 1995, 35, (12), 843-851. China has been involved for many years in the development of superconducting magnets for high energy physics, fusion research, magnetohydrodynamic power generation, magnetic separator, magnetic resonance imaging and other applications. The research activity in superconducting magnets has been intensified and diversified at the Institute of Electrical Engineering Academia Sinica and other laboratories. This paper reviews the recent progress of applied superconductivity in China. A possible future programme in also outlined m this paper.
Reduction of swltchlng overvoltages on composite feeders-transformer feeders
and utilisation (economics,
policy, supplies, forecasts)
96/00490
Redundancy Is key to Internal Revenue Service’s data centre reliability
Hughes, R. M. Consul. Specify Engr., Apr. 1995, 17, (4), 18-26. Describes how 15, 1500 kW diesel generators provide 20 MW Of standby power and reliability for a continuously-operating data centre. Nearly 12 MW of critical load is served by four UPS Systems.
96lOO491
Secondary llthlum batterles wlth Improved anodes and manufacture of the anodes
Mifuji, Y. et al., (Assigned to) Matsushita Electric Ind. Co.Ltd, JAP. Pat. JP.O7,73,86& Mar. 1995.
Selecting ::%:2 Valvoda, F. R. and Farrell,
branch-circuit shorttlrcult G. W.
protective
Consul. Specif: Engr., Jun. 1995, 17,
(7), 46-52. This is Part 29 of a series, and examines the protection of induction motors against short-circuit or earth faults. Quotes section 430-52 of the USA National Electrical Code.
96100493
State-of-the-art flbre-reinforced-plastic cryostats in
Japan
Okada, T. and Nishijima, S. Cryogenics, 1995, 35, (ll), 801-804. Fibre-reinforced-plastic (FRP) cryostats have been developed for various cryogenic fields, kuch as‘supeicoriducting magnets and cryogenic electronics. The FRP cryostats ought to be used as liquid-helium containers for the operation of a.c. and/or pulse superconducting magnets because the eddy current losses induced in the metallic cryostats would be too large to op&ate the magnets stably. They are also needed for SQUID (superconductina quantum interference device) operation because the metailic-cryostats di< turb the weak magnetic signals that are to be detected by the SQUID system. The material problems and possible answers are summarized. The construction of FRP cryostats is demonstrated. Recently developed FRP cryostats for practical applications in Japan are reviewed. 96100494 A study of swltchlng overvoltage8 on composite feeders-line-cable feeders Hamza, A. S. Energy Convers. Mgmt., Dec. 1995, 36, (12), 1153-1165. The study is concerned with the overvoltages produced as a result of switchine ooerations on comuosite feeders. this is when a circuit-breaker closes iti c&acts at the pea’k values of the applied voltage. Line-cable feeders are considered in the study. The means by which such overvoltages can be reduced are also included. Also, the eff&ts of system parameters and factors on the initial voltage applied and accompanied overvoltages are covered.
96tOQ495 Supplylng power on prescrlptlon Warland, S. Bldg. Serv. CIBSE J., Sep. 1995, 17, (9), 49-50. The article describes how 20 MVA of electrical power is supplied to the f700 million Glaxo-Wellcome Medicines Research Centre in Stevenage, UK. The system has been designed to be resilient and reliable. By fan cooling, the two 11 kV transformers are each capable of carrying the full load demand, and duplication of the incoming cables and the ring mains ensures a fault-tolerant supply.
96100496 TCC curves - A crltlcal element In protectlon y;t;da, F. and Farrell, G. W. Consul. Specif Engr., Apr. 1995, 17, (4), - . This is Pan 28 of a series, and examines the protection of induction motors against overload rather than short-circuits or earth faults. Quotes the safety requirements in section 430-31 in the USA National Electrical Code.
96100497 Voltage translents on restrlcted systems Byers, K. Simtars, Sep. 1995, 2, (4), 4-6. Typical sources of transient over voltages (TOV) in restricted systems due to various phenomena are discussed with TOV waveform examples recorded from tests conducted at a Bowen Basin coal mine (Australia). The mechanism by which TOVs are generated by switching of vacuum circuit breakers is described in detail.
Economics,
Policy, Supplies,
Forecasts
96lOQ409
Hamza, A. H. Energy Convers. Mgmt., Dec. 1995, 36, (12), 1139-1152. The paper describes fie overvoltage-produced on composite feeders when a circuit breaker closes at the peak of the applied voltage. Transformer feeders are considered. The means of reducing such overvoltages are also included, and the effect of the system parameters and factors on the initial voltage applied and the accompanying overvoltages are covered.
Analysls of electrlcal energy generatlon and consumption In Jordan
96100496
Tamimi, A. and O’Jailat, S. 1059-1062. Electrical energy generation discussed. The consumption expressed by polynomials of
Energy Convers. Mgmt., Nov. 1995,36,
(ll),
and consumption in Jordan are analysed and levels in various sectors were correlated and second or third degree with an error of +/-5%.
Fuel and Energy Abstracts January 1996 29