Title :
A VI for estimating electrical quantities in power systems over long time intervals
Author :
Peretto, Lorenzo ; Tinarelli, Roberto
Author_Institution :
Dept. of Electr. Eng., Bologna Univ., Italy
Abstract :
In this paper, an instrument based on the virtual instrumentation (VI) technique is presented. It allows estimating the trend of electrical quantities in power systems over long observation intervals by acquiring and processing a limited amount of data. An application example dedicated to a daily current profile estimation is presented and the relevant combined standard uncertainty, arising from the uncertainty sources located in the measurement hardware, is evaluated. Finally, the results of a statistical test are presented aiming at verifying the correctness of the gauged relationship.
Keywords :
digital signal processing chips; power supply quality; power system measurement; power system parameter estimation; statistical testing; virtual instrumentation; combined standard uncertainty; daily current profile estimation; digital signal processing; electrical-quantity measurements; measurement hardware; power systems estimation; statistical analysis; statistical tests; uncertainty sources; virtual instrumentation technique; Bandwidth; Current measurement; Instruments; Measurement standards; Power system measurements; Power systems; Sampling methods; Statistical analysis; Testing; Voltage;
Conference_Titel :
Power Tech Conference Proceedings, 2003 IEEE Bologna
Print_ISBN :
0-7803-7967-5
DOI :
10.1109/PTC.2003.1304807
