CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Analysis of Power Disturbances from Monitoring Multiple Levels and Locations in a Power System

Cuong Duc Le (Institutionen för signaler och system, Signalbehandling) ; M. H. J. Bollen ; Irene Y.H. Gu (Institutionen för signaler och system, Signalbehandling)
The 14th IEEE Int'l Conf. on Harmonics and Quality of Power, 26-29 Sep. 2010, Bergamo, Italy (2010)
[Konferensbidrag, refereegranskat]

This paper proposes a new methodology for diagnosing the original source and underlying causes of power system disturbances, where voltage and current recordings from different locations of a power system are collected. In the proposed method, disturbances are first pre-classified based on the number of transition segments. The spatial zone of the source of disturbances is coarsely determined from voltage recordings only. Disturbances are then further analyzed and characterized by extracting information from both voltages and currents. Finally more accurate information about the location of the source of disturbances is obtained by different techniques depending on the type of disturbances. Several underlying causes are analyzed and classified by using the proposed features extracted from both voltage and current waveforms. Finally, the location of the source of disturbances is refined once the underlying causes are found. Case studies were performed on a large grid-connected wind farm with disturbances from several underlying causes, including: fault, unit tripping, transformer, capacitor, and cable energizing generated by PSCAD/EMTDC.

Nyckelord: Power transmission and distribution, signal-processing applications, power–system disturbances, power quality, power-system monitoring, disturbance location.



Denna post skapades 2010-09-20. Senast ändrad 2011-01-11.
CPL Pubid: 126622

 

Läs direkt!


Länk till annan sajt (kan kräva inloggning)


Institutioner (Chalmers)

Institutionen för signaler och system, Signalbehandling (1900-2017)

Ämnesområden

Elektronisk mät- och apparatteknik
Signalbehandling
Elkraftteknik

Chalmers infrastruktur