摘要:

The paper surveys the electrical-engineering aspects of the design which are considered to be of general interest, but excludes reactor instrumentation and control equipment.The location of Hunterston and its relationship and connections to the supply system of the South of Scotland Electricity Board are first described. The paper then considers the special operational features of a nuclear station and discusses the overall station-control system.The auxiliary supply system is then dealt with, and the differences between nuclear and conventional station practice are indicated, with particular reference to the extensive ‘essential supplies’ system. The largest electrical auxiliaries are the gas-circulator drives, and since their design is unusual these drives are considered in some detail. The paper concludes with a description of the starting up and operation of the station.

DOI:10.1049/pi-a.1962.0106

出版商:IEE    

年代:1962

数据来源: IET

摘要:

The paper describes how frequent flashovers on powerful ‘limit’ d.c. motors and generators [maximum power-speed product (kW × r.p.m.) = 1.6×106] for gas circulator drives, ascribed to copper drag, have been virtually eliminated, and gives an account of some unusual experiences with carbon brushes and types of brush box.Experience has shown that such machines operating at 600 V (20 V per segment average) can be run day and night continuously at full load with few unscheduled outages, provided that they are kept absolutely clean and maintained at periodic intervals, and copper drag is removed when seen. It is important, therefore, to select a brush grade which produces the minimum commutator wear and does not cause copper dragging.

DOI:10.1049/pi-a.1962.0109

出版商:IEE    

年代:1962

数据来源: IET

摘要:

The paper describes the performance of a simple motor which produces directly a linear oscillatory motion. The amplitude range is of the order of 5–50 cm, and at an amplitude of 25 cm, frequencies of 10–12 c/s have been achieved. The moving member is a conducting metal ring sliding over a laminated bar of iron. The coils are at both ends at a distance apart greater than the oscillatory amplitude. The motor is operated from a single-phase 50 c/s supply.An analysis of the induction mechanism is attempted and several practical machines are described.

DOI:10.1049/pi-a.1962.0112

出版商:IEE    

年代:1962

数据来源: IET

摘要:

The paper presents a theoretical analysis of the asynchronous operation of turbo-generators, and equations are developed for predicting performance characteristics for two important cases in which the field circuit is either open-circuited or short-circuited through a resistor. The basic problem is that of calculating the effects of slip-frequency eddy currents induced in the surface of the highly saturated rotor forging, and the results of an approximate non-linear analysis are used for this purpose.Results of asynchronous tests conducted on a 60MW generator at Marchwood power station in March, 1960, are presented, and the accuracy and validity of the theoretical treatment are examined by comparison with these and earlier test results. The agreement obtained is considered to be sufficiently encouraging to warrant the use of the method of calculation as a basis for assessing the permissible asynchronous loading of turbo-generators.

DOI:10.1049/pi-a.1962.0113

出版商:IEE    

年代:1962

数据来源: IET

摘要:

The address reviews the planning of the original Grid system, and indicates the influence on system planning of the war years and the changes prior to nationalization. It then deals with the changed basis of planning since nationalization, and with the principal factors which have led to the present pattern of system planning and design. These include tariff changes, the changing design of generators and generating stations, the size and type of loads, and the standardization of transmission plant and equipment. Their effect is shown in examples from the North-Eastern Region of the Central Electricity Generating Board.

DOI:10.1049/pi-a.1962.0114

出版商:IEE    

年代:1962

数据来源: IET

摘要:

The paper discusses the contribution that electricity can make towards the advancement and prosperity of world agriculture, particularly in the newly developing countries. Electricity can most profitably be employed to aid human labour, and for controlling animal or plant environment. Data on world agricultural production, and electricity consumption in countries where the majority of the population is employed in agriculture, are given. Technical development in electro-agricultural equipment for the United Kingdom is traced, and the state of rural electrification there in the 1930s is compared with the present position in some developing countries.Large hydro-electric stations have been built with international funds in essentially agricultural countries where, to make good use of such resources, electricity consumption in rural areas must be expanded rapidly. Light networks, with no provision for augmentation, are unlikely to cater for the needs of the rapid intensification of agriculture forecast.Probable advances, known to the authors, in electro-agricultural equipment for the United Kingdom and oversea territories are forecast, and future researches are suggested.Finally, some suggestions are made for methods to be followed in establishing economic rural-electrification schemes as an essential aid to rural prosperity.

DOI:10.1049/pi-a.1962.0115

出版商:IEE    

年代:1962

数据来源: IET