Resonant PD signal decoupling circuit for rapidly changing voltages
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2011

A method for electrical detection of partial discharges (PDs) when the voltage is rapidly changing has recently been presented. The method is based on moderately sharp frequency filters in the PD decoupler, highresolution digitizers and time-domain stochastic filtering. A limitation with high-resolution digitizers is their lower sample rate. To enable use of faster digitizers with less resolution, the filters in the PD decoupler must be optimized for voltage slew rate and PD magnitude. In this paper, the design of a versatile PD coupler filter is discussed. Although entirely passive, the filter suppression can be made to change two orders of magnitude in half a decade of frequency. Thus, a lowresolution fast digitizer can be employed with which ns variations in the PD duration can be studied. The filter can be optimized by changing a few parameters only. Examples are presented which illustrates the advantages of this modified PD decoupler on actual measured PDs

PD

Författare

Thomas Hammarström

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Tord Bengtsson

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Jörgen Blennow

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Stanislaw Gubanski

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

22nd Nordic Insulation Symposium (NORDIS 11), June 13-15, Tampere, Finland

149-152

Drivkrafter

Hållbar utveckling

Styrkeområden

Energi

Materialvetenskap

Ämneskategorier

Annan materialteknik

Reglerteknik

Annan elektroteknik och elektronik

ISBN

978-952-15-2562-9

Mer information

Skapat

2017-10-07