IEC 61850-based islanding detection and load shedding in substation automation systems

Authors

CAGIL OZANSOY
KEITH FREARSON

DOI

10.3906/elk-1412-143

Abstract

Distributed generation (DG) systems are common within industrial plants and allow continuity of supply to critical loads. In cases when DG cannot support the entire system load, islanding detection (ID) and load shedding (LS) schemes are required. Such an automation scheme serves to monitor the connection to the grid and generation-load imbalance, and it controls the load shedding process. The design of such schemes has undergone significant revolution from electromechanical relays and PLC systems to the use of communications-enabled intelligent electronic devices. This paper discusses the design of an IEC 61850-based smart ID and LS scheme using a complete system design approach. Novel control algorithms are presented for the ID and initiation processes as well as the LS process. The study proposes an innovative system, which incorporates the generator governor gain factor in LS decisions, and assists in avoiding unnecessary amounts of LS.

Keywords

Load shedding, load shedding controller, IEC 61850, islanding detection, GOOSE messaging, governor gain factor

First Page

4858

Last Page

4873

Recommended Citation

OZANSOY, CAGIL and FREARSON, KEITH (2016) "IEC 61850-based islanding detection and load shedding in substation automation systems," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 24: No. 6, Article 24. https://doi.org/10.3906/elk-1412-143
Available at: https://journals.tubitak.gov.tr/elektrik/vol24/iss6/24