An Automated Noncontact Measurement System for Current Harmonics in Aerial Transmission and Distribution Systems

Using magnetic field data from under aerial power transmission lines, tomographic reconstruction techniques have been applied to determine the magnitudes and phases of currents in each power conductor. Phasor current values at fundamental (60 Hz) and harmonic frequencies are produced. This measureme...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 1984-01, Vol.33 (1), p.31-36
Main Authors: Cyganski, David, Orr, John A., Emanuel, Alexander Eigeles, Gulachenski, Edward M., Pileggi, David J.
Format: Article
Language:English
Subjects:
Applied sciences
Conductors
Current measurement
Electrical engineering. Electrical power engineering
Electrical power engineering
Exact sciences and technology
Frequency
Magnetic field measurement
Measurement techniques
Monitoring
Overhead networks
Power networks and lines
Power transmission lines
Tomography
Transformers
Transmission line measurements
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Description
Summary:Using magnetic field data from under aerial power transmission lines, tomographic reconstruction techniques have been applied to determine the magnitudes and phases of currents in each power conductor. Phasor current values at fundamental (60 Hz) and harmonic frequencies are produced. This measurement technique requires no physical contact with power lines (even by clamp-around transformers) and hence should be convenient for monitoring and trouble-shooting cases of excessive harmonic currents on transmission and distribution facilities. The method has been implemented experimentally, and laboratory and initial field tests have demonstrated its basic validity.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.1984.4315147