Title :
Design and evaluation of a circulating current differential relay test system
Author :
Crossley, P.A. ; Li, H.Y. ; Parker, A.D.
Author_Institution :
Dept. of Electr. Eng., Univ. of Manchester Inst. of Sci. & Technol., UK
fDate :
4/1/1998 12:00:00 AM
Abstract :
This paper describes how an EMTP-based simulator can be used in conjunction with a relay test set to type-test a protection relay operating within a circulating current differential protection scheme. The combination of a simulator and a test-set is designed to replace a high power synthetic test plant that has been used for more than 30 years for type and approval testing of differential protection relays. The paper includes results that describe the operating performance of the new test system, on both internal and external faults, and these are compared with experimental results obtained from an identical set of tests on the synthetic test plant
Keywords :
automatic testing; electrical faults; power system analysis computing; power system measurement; power system protection; power system relaying; relay protection; software packages; test facilities; EMTP; approval testing; circulating current differential relays; computer simulation; external faults; internal faults; operating performance; power system protection test system; synthetic test plant; testing automation; type testing; Circuit faults; Current transformers; Fault currents; Magnetic cores; Power system protection; Power system relaying; Protective relaying; Relays; System testing; Transformer cores;
Journal_Title :
Power Delivery, IEEE Transactions on
