A Two-Stage ADALINE for Harmonics and Interharmonics Measurement

• Published in: IEEE transactions on industrial electronics (1982) Vol. 56; no. 6; pp. 2220 - 2228
• Main Authors: Chang, G.W., Cheng-I Chen, Quan-Wei Liang
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.06.2009; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Adaptive linear element (ADALINE); Customers; Electric power generation; Electronic equipment; Fourier transforms; frequency deviation; Hardware; Harmonics; Interharmonics; Laboratories; MATLAB; Monitoring; nonlinear loads; Power industry; Power measurement; Power quality; Power system harmonics
• ISSN: 0278-0046; 1557-9948
• DOI: 10.1109/TIE.2009.2017093

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.