Title :
A power system digital harmonic analyzer
Author :
Mortensen, A. Norman ; Johnson, Gary L.
Author_Institution :
Kansas State Univ., Manhattan, KS, USA
fDate :
12/1/1988 12:00:00 AM
Abstract :
The authors describe the design of a harmonic analyzer for use in studying the harmonic content of commercial electric power. This MC 68000-based instrument samples the waveform and calculates the first 63 harmonics of the 60-Hz fundamental for both a voltage and current waveform. The 64-kbyte memory is adequate for one week of hourly samples for a power-quality survey by an electrical utility. The analyzer is quickly attached to the outputs of potential and current transformers by alligator clips and a current plug. The harmonic data are retrieved from the instrument by a portable computer. A separate personal computer (PC) program is then used for data analysis. Accuracy is shown to be about 0.1%, more than adequate for power quality surveys
Keywords :
computerised instrumentation; data analysis; digital instrumentation; electric current measurement; harmonic analysis; microcomputer applications; power engineering computing; power measurement; voltage measurement; 60 Hz; 64 kBytes; MC 68000-based instrument; current waveform; data analysis; digital harmonic analyzer; harmonic data; personal computer; portable computer; power quality surveys; voltage waveform; Current transformers; Harmonic analysis; Industrial power systems; Information retrieval; Instruments; Plugs; Power quality; Power system analysis computing; Power system harmonics; Voltage transformers;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
