Protection of double-circuit transmission line integrated with a wind farm using daubechies-5 wavelet transform

Abstract EN

In this study, a new concept of Daubechies-5 wavelet transform (Db5WT)-based technique is introduced to detect various types of shunt faults in the wind farm-integrated double-circuit transmission line (WFIDCTL).

The information of fault contained in the current signals of both circuits is captured using Db5WT.

The fifth-level Db5WT coefficients of current signals of both circuits are then calculated, which aspires at the fault detection and faulty phase recognition.

The fault factors of the MATLAB model of WFIDCTL are varied.

The results show that the Db5WT effectively detects the fault and discriminates the faulted phase.

The Db5WT offers primary protection to the total transmission length using the fault currents recorded at the single side only.