Protection performance is dependent on the availability of accurate and reliable protection relays and their connection to high quality measuring transformers and well designed tripping systems. But it is only in the substation that all elements of protection systems are brought together during site installation and hence can be tested for the first time. The author describes the re-examination of on site testing requirements and methods undertaken during CEGB reorganisation. He shows that the introduction of new technology and increasing system utilisation factor has been fully taken into account
Published in:
Developments in Power Protection, 1989., Fourth International Conference on
Date of Conference: 11-13 Apr 1989