1 Electric Power Systems, The Faculty of Engineering and Science, Aalborg University, VBN2 Department of Energy Technology, The Faculty of Engineering and Science, Aalborg University, VBN
This paper deals with the subband coding (wavelet multiresolution analysis) and Wavelet packet signal processing tool on corrected PSCAD/EMTD® simulations and some results of a full scale earth fault experiment carried out on the Petersen-Coil compensated 10 kV research/laboratory distribution network at Kyndbyvaerket, Denmark. The PSCAD/EMTD® simulation model is equivalent to the research/laboratory network at Kyndbyvaerket, build on 25 corrected cable models and 4 line models in a radial network of approximately 7.4 km length connected to four distribution transformers. The purpose is to show that the transient sequence of currents and voltages not exceed a bandwidth of approximately 10 kHz, for which signal measurements on conventional current transformers (CT's) and voltage transformers (VT's) is sufficient. Further analysis with the Prony signal processing tool will show the connexion of the earth fault transients and the Prony estimated exponential damped sinusoids.
Nordac 2002 : Nordic Distribution and Asset Management Conference, November 7-8, 2002, Copenhagen, 2002