Title :
Upgrading the protection of industrial-sized generators using digital technology
Author :
Mozina, Charles J.
Author_Institution :
Beckwith Electr. Co. Inc., Largo, FL, USA
Abstract :
This paper presents the reasons why industrial generator owners should consider upgrading the electrical protection of their generators to meet today´s standards. It specifically outlines the risks assumed in five functional areas where 20+ year old generator protection is inadequate. These areas include: negative sequence (unbalanced current) protection, sensitive stator ground fault protection, sensitive overexcitation protection, inadvertent (accidental) generator energizing, and voltage transformer fuse loss protection. It also outlines the need to provide generator oscillographic monitoring. The paper discusses the advantages of digital versus conventional technology for such an upgrade program
Keywords :
computerised monitoring; digital systems; electric fuses; electric generators; machine protection; oscillographs; power engineering computing; relay protection; stators; accidental generator energizing; digital technology; generator oscillographic monitoring; generator protection upgrade; industrial-sized generators; negative sequence protection; relay protection; sensitive overexcitation protection; sensitive stator ground fault protection; unbalanced current protection; voltage transformer fuse loss protection; Circuits; Costs; Frequency; Fuses; Power generation; Power system protection; Reluctance generators; Rotors; Skin effect; Stators;
Conference_Titel :
Industry Applications Conference, 1996. Thirty-First IAS Annual Meeting, IAS '96., Conference Record of the 1996 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-3544-9
DOI :
10.1109/IAS.1996.563892
