Ianniello, Giacomo
(2013)
Power quality measurement methods aimed at disturbances detection and instrumentation susceptibility assessment.
[Tesi di dottorato]
| Tipologia del documento: |
Tesi di dottorato
|
| Lingua: |
English |
| Titolo: |
Power quality measurement methods aimed at disturbances detection and instrumentation susceptibility assessment |
| Autori: |
| Autore | Email |
|---|
| Ianniello, Giacomo | giacomo.ianniello@unina.it |
|
| Data: |
2 Aprile 2013 |
| Numero di pagine: |
90 |
| Istituzione: |
Università degli Studi di Napoli Federico II |
| Dipartimento: |
Ingegneria Elettrica e delle Tecnologie dell'Informazione |
| Scuola di dottorato: |
Ingegneria industriale |
| Dottorato: |
Ingegneria elettrica |
| Ciclo di dottorato: |
25 |
| Coordinatore del Corso di dottorato: |
| nome | email |
|---|
| Rubinacci, Guglielmo | rubinacci@unina.it |
|
| Tutor: |
| nome | email |
|---|
| D'Apuzzo, Massimo | dapuzzo@unina.it | | D'Arco, Mauro | darco@unina.it |
|
| Data: |
2 Aprile 2013 |
| Numero di pagine: |
90 |
| Parole chiave: |
power quality; Power meter, ADC |
| Settori scientifico-disciplinari del MIUR: |
Area 09 - Ingegneria industriale e dell'informazione > ING-INF/07 - Misure elettriche e elettroniche |
[error in script]
[error in script]
| Depositato il: |
10 Dic 2013 10:25 |
| Ultima modifica: |
15 Lug 2014 13:13 |
| URI: |
http://www.fedoa.unina.it/id/eprint/9380 |
Abstract
In this work several important aspects of power quality are discussed, and measurement methods aimed at disturbances detection are proposed.
A first aspect, investigated throughout laboratory tests, concerns the effects of poor power quality on measurement instrumentation. Susceptibility studies have been carried out considering the disturbances referred into standard CEI EN 50160. Controlled power quality disturbances have been injected in instrumentation and both reliability and accuracy issues have been checked in the test.
A second aspect taken into account is that related to the instrumentation needed for the analysis of the power quality. An original contribution that consists in the design and implementation of a distributed low cost Arm based network analyzer has been presented. The network analyzer is able to measure the power quality characteristics by each appliance. Furthermore, the proposed distributed analyzer includes a web server that allows to collect the statistics of each meter. A client can connect to the server to analyze meter group measurement results.
Several details related to suitable strategies to increase measurement resolution have also been considered. In particular a pre processing scheme to enhance resolution of data acquisition systems mainly in presence of band bass input signals has been investigated. This solution permits to acquire a seamless data stream with improved vertical resolution. An important feature is that this solution shows efficient in terms of hardware requirements and processing time.
Finally, since in power quality assessment harmonic analysis plays a key role, modeling and analysis of the functioning of power systems in time varying conditions has been studied with the purpose of understanding how harmonic analysis could be used effectively in these scenarios. In particular the power systems have been described trough simplified approaches by recognizing load conditions that can be considered stationary within limited time intervals. A data segmentation approach to distinguish the time intervals in which stationary load conditions can be recognized has been proposed and assessed.
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