Generator Differential Protection Using a Hybrid Computer
- 1 November 1973
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems
- Vol. PAS-92 (6) , 2063-2072
- https://doi.org/10.1109/tpas.1973.293735
Abstract
This paper presents a rea1-time hybrid, analog-digital, computer technique for differential protection of generators. The fault/no fault decisions are based on the amplitude ratio of the "fault"' and "average through" currents from a selected generator phase. Analog input data pre-processor, fault monitor and soft-ware segments suitable for valid comparison during the transient period after the inception of a fault are described. Typical examples, from out of approximately 800 case studies, including internal and external faults using a three phase generator are presented.Keywords
This publication has 4 references indexed in Scilit:
- A Proposed Method of Harmonic Restraint Differential Protecting of Transformers by Digital ComputerIEEE Transactions on Power Apparatus and Systems, 1972
- Relaying a Three Phase Transmission Line with a Digital ComputerIEEE Transactions on Power Apparatus and Systems, 1971
- Digital Calculation of Impedance for Transmission Line ProtectionIEEE Transactions on Power Apparatus and Systems, 1971
- Fault Protection with a Digital ComputerIEEE Transactions on Power Apparatus and Systems, 1969