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This paper presents an adaptive discrete wavelet transform (DWT) based genetic algorithm (GA) technique for automatic generation control (AGC) systems. The controller ensures a zero steady state error for frequency deviation, mitigates inter area oscillations between interconnected power system and damps out noise from the Area Control Error (ACE) signal. The non-orthogonal DWT with GA optimization...
The rise in penetration levels of distributed generation (DG) poses some challenges to distribution networks. This paper presents the results of an investigation into the effect of high DG penetration levels on thermal limits of distribution lines, and voltage rise at the point of common coupling. The study system used was the 16-bus UK distribution test system. The results obtained indicate voltage...
Shunt Active Power Filters (APFs) play an important role in mitigating load current related power quality (PQ) challenges. Their dynamic performance largely depends on the control technique deployed. This paper proposes a simple and novel 2nd order low pass filter (LPF) wavelet based control scheme for Shunt APF. The control technique is driven on the concept of wavelet based multiresolution analysis...
A scheme to predict transient stability status following a disturbance is presented. The scheme is activated upon the tripping of a line or bus and operates as follows: Samples of frequency deviations of all generator buses are obtained using a sampling frequency of 32 samples per cycle. For each generator bus, the maximum frequency deviation within the first two samples is obtained. A vector is then...
A novel scheme is presented for real-time prediction of rotor angle stability status. The scheme is activated following a large disturbance and operates by obtaining a set of two rotor angles for each generator. Each set of two rotor angles sampled is decomposed using the fast Walsh-Hadamard transform resulting in two Walsh coefficients. The absolute value of each coefficient is obtained and the maximum...
This paper presents the results of a survey conducted to determine the extent of students' awareness of energy conservation measures in the use of various electrical appliances as well as their preparedness to support efforts towards reducing energy wastage in institutions. The survey was carried out through the administration of questionnaires. Nine hundred and seventy questionnaires were administered...
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