ISSN:1479-8344    

DOI:10.1049/pe:19900014

出版商:IEE    

年代:1990

数据来源: IET

ISSN:1479-8344    

DOI:10.1049/pe:19900016

出版商:IEE    

年代:1990

数据来源: IET

摘要:

Continued load growth at the Sellafield nuclear chemical site caused a review of the high-voltage system and its cabling. Type-test evidence was not available for the newer XLPE cabling systems. Tests in conjunction with the manufacturers generated the necessary evidence

ISSN:1479-8344    

DOI:10.1049/pe:19900017

出版商:IEE    

年代:1990

数据来源: IET

摘要:

The next couple of years will see the need for replacement of a large amount of life-expired switchgear on the UK 11 kV distribution system. Latest technology and alternative equipment have made the choice of replacement a complex task. In this article, an expert system is presented as an aid to the decision process for the design of the 11 kV power distribution network

ISSN:1479-8344    

DOI:10.1049/pe:19900018

出版商:IEE    

年代:1990

数据来源: IET

摘要:

Users of power transformers often ask if the nameplate rating may be exceeded so that some exceptionally large load may be supplied. The cyclical nature of loads suggests that it may be possible to exploit the inherent delays in the thermal response of a transformer to changes in heating. Using accepted formulas and international standards it is shown that, in particular cases, loads exceeding rated values may be sustained

ISSN:1479-8344    

DOI:10.1049/pe:19900019

出版商:IEE    

年代:1990

数据来源: IET

摘要:

Most of the underground distribution cable in use in the United Kingdom is insulated by windings of paper tape which are impregnated with compounds of oil, wax and resin, in various proportions. The structure of this type of insulation is expected to deteriorate with time so that, even if the cable is mechanically undisturbed, the insulation may eventually be unable to withstand the applied electrical stress, and the cable will fail. Under favourable circumstances a well-made cable may survive for several decades, but failures sometimes occur in cables only a few years old

ISSN:1479-8344    

DOI:10.1049/pe:19900020

出版商:IEE    

年代:1990

数据来源: IET

摘要:

The use of compressed air for sootblowing, rather than steam, can give added benefits to power-station efficiency in both economic and technical terms

ISSN:1479-8344    

DOI:10.1049/pe:19900021

出版商:IEE    

年代:1990

数据来源: IET

摘要:

This article examines some special applications of power reactors in HV power systems. It describes their principle of operation, the problems of harmonics and their suppression

ISSN:1479-8344    

DOI:10.1049/pe:19900022

出版商:IEE    

年代:1990

数据来源: IET