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The protection of electrical power systems: a critical review of present-day practice and recent progress

 

作者: H.Leyburn,   C.H.W.Lackey,  

 

期刊: Proceedings of the IEE - Part II: Power Engineering  (IET Available online 1952)
卷期: Volume 99, issue 67  

页码: 47-59

 

年代: 1952

 

DOI:10.1049/pi-2.1952.0013

 

出版商: IEE

 

数据来源: IET

 

摘要:

The paper deals with the protection of generators, power transformers, feeders and busbars and with the characteristics of protective transformers. The subject-matter has been selected for the following purposes:(a) To raise some controversial issues relating to protective-gear practice in order to promote discussion upon them in the hope that this will lead to more general agreement. Among these issues are over-current and negative-phase-sequence protection of generators, earthing of the neutral point, the use of Post Office pilot wires for protection, the application ofcarrier-distance protection, the duplication and supervision of busbar-zone protection, and the overlapping of current-transformers.(b) To outline some new problems which have arisen.(c) To describe some new developments of importance, such as instantaneous differential protective system for power transformers, high-resistance pilot-wire scheme, a starting scheme for carrier protection and a biased differential system of busbar-zone protection.(d) To examine briefly the performance requirements of protective transformers.

 

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