Travelling-wave techniques applied to the protection of teed circuits:-multi-phase/multi-circuit system

Journal Article · Sun Dec 01 04:00:00 EST 1985 · IEEE Trans. Power Appar. Syst.; (United States)

DOI:https://doi.org/10.1109/MPER.1985.5528634· OSTI ID:6098030

Rajendra, S; McLaren, P G

In a preceding paper, the authors had described new techniques based on the h.f. travelling-wave information contained in the post fault voltage and current signals. In an attempt to present the underlying principles without undue complications, the study was limited to a lossless, frequency independent single phase line model. The present paper considers the extension of the various techniques to a more practical 3-phase system. A uniformly distributed parameter line model is employed which includes the frequency dependent variations in the line parameters and the effect of the earth return. The paper evaluates the performance of the techniques with respect to both a single circuit and a double circuit tee line for various fault locations, both internal and external to the local tee branch. A particularly unfavourable network configuration in relation to the protection of teed circuits is the presence of a feed-around path. In this study, the validity of the techniques when applied to such a circuit arrangement will also be investigated. Modifications to the simplified algorithm described previously will be required for particular system configurations and implementation of the travelling-wave relay will be based on a multi-processor relay configuration which is optimised for a given network configuration.

• Research Organization: Cambridge University Engineering Dept., Cambridge
• OSTI ID: 6098030
• Journal Information: IEEE Trans. Power Appar. Syst.; (United States), Journal Name: IEEE Trans. Power Appar. Syst.; (United States) Vol. PAS-104:12; ISSN IEPSA
• Country of Publication: United States
• Language: English

Related Subjects

200300* -- Electric Power Engineering-- Power Transmission & Distribution-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
ALGORITHMS
COMPUTERIZED CONTROL SYSTEMS
COMPUTERIZED SIMULATION
CONTROL SYSTEMS
CURRENTS
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRICAL FAULTS
ELECTRONIC CIRCUITS
EQUIPMENT
FREQUENCY DEPENDENCE
MATHEMATICAL LOGIC
POWER CONDITIONING CIRCUITS
POWER TRANSMISSION LINES
RELAYS
SIMULATION
TRAVELLING WAVES