Title :
Real-time accurate power system frequency meter and its quality evaluation based on simulations and large area system observations
Author :
Winek, Tomasz ; Staroszczyk, Zbigniew
Author_Institution :
Inst. of the Theory of Electr. Eng. & Electr. Meas., Warsaw Univ. of Technol., Poland
Abstract :
The solution of accurate power system frequency meter/registrator is presented. The meter is equipped with a standard PC DAQ-card which is able to perform the background data acquisition process. The method is based on system voltage signal zero-crossings observations, and zero positions processing targeted to instant system frequency estimation. Different observations of the real power system signals are presented-local and distanced, where two parallel observations were made in 25 km distanced subsystems. The results were verified with the standard signals from AFG of the known frequency and it was confirmed that the accuracy is a few hundred μHz
Keywords :
data acquisition; frequency measurement; frequency meters; power system measurement; step response; virtual instrumentation; absolute measurements; accurate power system frequency meter; background data acquisition process; instant system frequency estimation; large area system observations; quality evaluation; real power system signals; simulations; standard PC DAQ-card; step response; system voltage signal zero-crossings; virtual panel; zero positions processing; Frequency measurement; Noise measurement; Paper technology; Pollution measurement; Power measurement; Power system measurements; Power system simulation; Power systems; Real time systems; Voltage;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-5890-2
DOI :
10.1109/IMTC.2000.848869
