Title :
An Improved Technique for Calibrating and Testing Power System Generator Automatic Synchronizing and Speed Hatching Relays
Author :
Nagy, David C. ; Richards, Earl F.
Author_Institution :
Union Electric Co.
Abstract :
The design of a unique special purpose instrument for calibrating and testing power system automatic synchronizing and speed matchiing relays is described. The unit is constructed using inexpensive integrated circuit components and provides a direct digital readout of slip frequency from 0.05 Hz to 0.50 Hlz resolution and advance angle from 0 to 99.9 degrees with 0.1 degree resolution. This device eliminates the need for expensive test equipment previously required, expedites the test procedure and solves the problem of referencing against a variable bus frequency source.
Keywords :
Automatic testing; Circuit testing; Digital integrated circuits; Digital relays; Frequency synchronization; Instruments; Power generation; Power system relaying; System testing; Test equipment;
Journal_Title :
Power Apparatus and Systems, IEEE Transactions on
DOI :
10.1109/TPAS.1980.319619