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This paper presents a wavelet based technique for monitoring and measuring nonstationary power system disturbances. A significant improvement in monitoring efficiency is achieved by processing signals through Kaiser's window. The maximum expansion coefficient extracted at each resolution level, the indices and sign of these coefficients at a super-resolution are used to monitor and measure the nonstationary...
Defining the resolution levels where a PD signal is localized and selecting an automated threshold values for on-line de-noising and measurement are the main challenging task in wavelet multi-resolution analysis (WMRA) application for PD detection and measurement. This paper proposes a new wavelet- based technique for monitoring PD signals embedded in high noise levels. The data is decomposed while...
This paper introduces a new methodology for instantaneous measurement of symmetrical components utilizing the energy operator concept. The energy operator is used to measure the changes in the amplitudes and the angles of the three phases which are then processed to calculate the symmetrical components. The proposed technique is robust, fast, simple, stable and easy to implement. Various signals experienced...
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