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A new hybrid protection scheme, based on traveling wave protection principle and boundary protection principle for a bi-polar HVDC line is proposed. Stationary wavelet transform (SWT) is adopted in the traveling wave protection to process DC signals and then wavelet modulus maxima are used to further represent useful traveling wave signal. Boundary protection based on SWT is used jointly with traveling...
Implementation of a hybrid protection scheme for bipolar HVDC line with field-programmable gate array (FPGA) is described in this paper. The protection scheme amalgamates a traveling wave protection unit, a boundary protection unit and a lightning unit. Stationary wavelet transform (SWT) and its wavelet modulus maxima are used to remove noise and represent useful traveling wave signal. Boundary protection...
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