A New Computer-Based Flux-Restrained Current-Differential Relay for Power Transformer Protection
- 1 November 1983
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems
- Vol. PAS-102 (11), 3624-3629
- https://doi.org/10.1109/tpas.1983.317711
Abstract
The paper begins with a review of techniques for computer based protection of multi-winding three-phase power transformers. After reviewing the principles of harmonic-restraint and voltage-restraint current differential protection, the paper develops a technique which computes and uses flux-current relationship of the transformer to obtain. the restraint function. It is shown that this protection technique requires fewer computations as compared to the harmonic current computation, and hence can be implemented on a microcomputer of modest. capability. The principle has been tested. in the'laboratory on a model power transformer. The relay based on this flux-restraint principle performs well on all the system phenomena simulated in the laboratory. It is expected that a relay based on this principle will be tested in the field on a power transformer.Keywords
This publication has 3 references indexed in Scilit:
- A Microprocessor Based Three-Phase Transformer Differential RelayIEEE Transactions on Power Apparatus and Systems, 1982
- A Microcomputer Based Ultra-High-Speed Dostance Relay: Field TestsIEEE Transactions on Power Apparatus and Systems, 1981
- Principles and Practices of Relaying in the United StatesTransactions of the American Institute of Electrical Engineers, 1948