Application of out-of-step relaying for small generators in distributed generation

Author

Malmedal, Keith ; Sen, P.K. ; Nelson, John P.

Author_Institution

NEI Electr. Power Eng., Arvada, CA, USA

fYear

2004

fDate

23-25 May 2004

Lastpage

42380

Abstract

The recent popularity of distributed generation (DG) has caused an increasing number of small generators (rated between 100 kVA - 12.5 MVA) to be connected to the power system at the distribution level (480 V - 12.47 kV). Some utilities require that out-of-step relays be installed by the generation owner at the point of common coupling (PCC). This paper will examine out-of-step relaying practices as they apply to small generation protection. It will consider the value, purpose, and applicability and provide guidelines for setting of this type of relay, when employed.

Keywords

distributed power generation; machine protection; power distribution protection; power system transient stability; relay protection; 100 kVA to 12.5 MVA; 480 V to 12.47 kV; circuit breaker; critical clearing angle; distributed generation; generation protection; line-to-line-to-ground fault; out-of-step relaying; point of common coupling; rotor swing; small generators; system stability; transient stability; Distributed control; Distributed power generation; Energy management; Power engineering and energy; Power generation; Power system interconnection; Power system protection; Power system relaying; Protective relaying; Relays;

fLanguage

English

Publisher

ieee

Conference_Titel

Rural Electric Power Conference, 2004

Print_ISBN

0-7803-8298-6

Type

conf

DOI

10.1109/REPCON.2004.1307051

Filename

1307051