Abstract—Harmonics and interharmonics may introduce operational
problems in electrical and electronic equipment. Therefore,
monitoring harmonics/interharmonics for improving the
power quality is of importance for both electric utilities and their
customers. In this paper, a cascaded two-stage adaptive linear
element (ADALINE) structure for both harmonics and interharmonics
measurement is proposed. In addition, a simple laboratory
setup implemented by MATLAB and the dedicated hardware
for measuring power signals is built to verify the performance
of proposed method. Results are compared with those obtained
by short-time Fourier transform and two other conventional
ADALINE-based methods. It shows that the proposed method
is with a better accuracy, even if the power frequency deviation
and interharmonic components are present in the measured signal.
The proposed method also can be adopted for harmonic/
interharmonic compensation devices in real time.
Relation:
IEEE Transactions on Industrial Electronics 56(6) : 2220-2228
