Spline function-based adaptive overcurrent grading for multifeed distribution systems

Abhishek Khanna

International Journal of Energy Technology and Policy, 2007, vol. 5, issue 5, 569-583

Abstract: In spite of the changes in the hardware and the principle of operation, the characteristic of the overcurrent relays has not undergone much change. The scheme proposed in this paper is based on the spline function characteristic rather than the conventional overcurrent characteristic and is adaptive in nature. Also, the fault clearing time for each fault current level is based on system fault washstand level. The concept is proposed for a system that has four buses forming a ring and each bus has a generator connected to it. One of the relays has two characteristics and is provided with automatic selection of the characteristics and this way adaptability is built in the system. This scheme is easy to implement using a numerical relay and utilises the capability of the numerical relays in a better way.

Keywords: spline function; fault clearing security factor; FCSF; adaptive relaying; maximum fault clearing time; MFCT; in-feed ratio; overcurrent grading; multifeed distribution systems; overcurrent relays; power systems. (search for similar items in EconPapers)
Date: 2007
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.inderscience.com/link.php?id=15512 (text/html)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:ids:ijetpo:v:5:y:2007:i:5:p:569-583

Access Statistics for this article

More articles in International Journal of Energy Technology and Policy from Inderscience Enterprises Ltd
Bibliographic data for series maintained by Sarah Parker ().