Title :
Frequency relaying based on instantaneous frequency measurement [power systems]
Author :
Moore, P.J. ; Allmeling, J.H. ; Johns, A.T.
Author_Institution :
Sch. of Electron. & Electr. Eng., Bath Univ., UK
fDate :
10/1/1996 12:00:00 AM
Abstract :
A frequency relay capable of under/over frequency and rate of change of frequency measurements has been implemented on a digital signal processor using an instantaneous frequency measuring algorithm. Careful attention to the filtering aspects of the relay is needed under dynamic conditions due to frequency modulation of the input signal. An algorithm for avoiding unwanted relay operation due to impulsive changes in the input signal is presented. Results are shown for simulated tests using computer-based relay testing equipment, and for overloads on a micromachine power system simulator
Keywords :
automatic test equipment; automatic testing; frequency measurement; power system analysis computing; power system measurement; power system relaying; algorithm; dynamic conditions; filtering aspects; frequency modulation; frequency relay; input signal; instantaneous frequency measurement; micromachine power system simulator; overfrequency measurement; power systems; rate of change of frequency measurement; relay testing equipment; test automation; underfrequency measurement; Computational modeling; Computer simulation; Digital relays; Digital signal processors; Frequency measurement; Power system dynamics; Power system relaying; Power system simulation; Signal processing algorithms; System testing;
Journal_Title :
Power Delivery, IEEE Transactions on
