Abstract :
The ability to perform power system measurements synchronously over large areas opens a new window on dynamics occurring within the power system. A number of events were recorded by GPS satellite-locked disturbance recorders, and the records illustrate the frequency variation that exists across a network during transients, the swinging of various points in the system with respect to each other during a disturbance, and the effects of loss of generation or load over extremely long distances. Measurements are made possible by the use of embedded computers and digital signal processing technology. The author discusses the use of phasor measurement unit, a microprocessor based data acquisition system and signal processing platform with an integral GPS clock and multiple inputs. The system allows more accurate recording of power system phenomena that would otherwise remain undetected. System response data permits the validation of models, real-time measurement of protection characteristics, and early detection of potential system instabilities or equipment malfunction
Keywords :
Global Positioning System; data acquisition; fault location; microcomputer applications; power engineering computing; power system measurement; power system protection; power system stability; power system transients; real-time systems; synchronisation; GPS satellite-locked disturbance recorders; digital signal processing; disturbance recorders; embedded computers; equipment malfunction detection; integral GPS clock; loss of generation; loss of load; microprocessor based data acquisition system; multiple inputs; phasor measurement unit; protection characteristics measurement; real-time measurement; synchronous power system measurements; system instabilities detection; transients; Digital signal processing; Embedded computing; Frequency; Global Positioning System; Performance evaluation; Power system dynamics; Power system measurements; Power system modeling; Power system protection; Power system transients;
