Real-Time Monitoring of ENF and THD Quality Parameters of the Electrical Grid in Portugal

Campos N, Ferreira A. Real-Time Monitoring of ENF and THD Quality Parameters of the Electrical Grid in Portugal. In: AES Conference: 54th International Conference: Audio Forensics. Audio Engineering Society; 2014. Paper 4-4. Available from: https://aes.org/publications/elibrary-page/?id=17332

@inproceedings{Campos2014_17332,
  author = {Campos, Nuno and Ferreira, Aníbal},
  title = {{Real-Time Monitoring of ENF and THD Quality Parameters of the Electrical Grid in Portugal}},
  booktitle = {AES Conference: 54th International Conference: Audio Forensics},
  note = {Paper 4-4},
  year = {2014},
  month = jun,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=17332}
}

TY  - CPAPER
TI  - Real-Time Monitoring of ENF and THD Quality Parameters of the Electrical Grid in Portugal
AU  - Campos, Nuno
AU  - Ferreira, Aníbal
T2  - AES Conference: 54th International Conference: Audio Forensics
M1  - Paper 4-4
PY  - 2014
DA  - 2014/06/06
UR  - https://aes.org/publications/elibrary-page/?id=17332
PB  - Audio Engineering Society
LA  - en
AB  - In audio forensics, the Electrical Network Frequency (ENF) has been shown to be a very useful and reliable reference signal. Since the Total Harmonic Distortion (THD) is another relevant quality parameter, we studied the variation of both ENF and THD in different locations of the electric grid in Portugal. To this purpose, we describe the design and test of a complete ENF and THD monitoring system which includes autonomous sensors that are able to extract these parameters, and send them via web to a server. An interactive web interface is also integrated which allows real-time monitoring and access to stored data. ENF and THD data have been collected on different periods and locations of the Portuguese electric grid. Besides confirming the known features of the ENF parameter, results have shown that THD data is strongly affected by local factors and therefore exhibits little geographical consistency. In a forensic perspective, while the ENF is tailored to spot events in time, the THD has the potential to spot events in space.
ER  -