Stator earth-leakage protection for large generators

Abstract

In the paper a generator protection is described which is capable of detecting earth leakages in any point of the stator winding and deterioration of insulation over parts of the winding adjacent to the neutral point. The theoretical considerations in conjunction with the application or the protection nave been dealt with in Paper 34-01 of the 1972 session of CIGRE1. In the present paper, after giving a description of the operating principle, an account of some recent results of development and experiments will be given. Copyright © 1975 by The Institute of Electrical and Electronics Engineers, Inc.