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During energisation of a power transformer, inrush current phenomenon happens which is able to be ended up with a collection of undesirable consequences. This inrush current could lead to mal-operation of protection system, considerable stresses over transformer (electrical, mechanical and thermal stresses) and electrical transient tension on the power system network. Accordingly, transformer energisation...
This paper engaged with the 1) optimal STATCOM sizing to achieve required power factor as per the grid code requirement at the Point of Common Coupling (PCC) under various loading and operating conditions and 2) STATCOM dynamic performance during large motor starting and under fault conditions by monitoring the bus voltage recovery, STATCOM reactive power supply, synchronous machine rotor angle using...
This paper mainly demonstrates several case studies to show the power system performance enhancement by offline power system studies. The off-line study cases includes both industrial and utility systems and describes about (i) blackout analysis for an oil and gas plant (ii) substation insulation coordination studies and (iii) substation equipment failure analysis. Full analysis of the results for...
One of the main characteristics of Smart Grids is self healing. This means that the grid should rapidly detects, analyzes, acts and restores for system instabilities. Controlled islanding is one of the techniques used to mitigate these system instabilities. System islanding is often considered as the final stage of power system defense plans. The goal is to preserve stable areas of the faulted power...
Increasing expansion of power systems and grids are accompanied nowadays by innovation in smart grid solutions to maintain systems stability. This paper proposes an intelligent wide area synchrophasor based system (IWAS) for predicting and mitigating transient instabilities. The IWAS incorporates artificial neural networks (ANN) for transient stability prediction. The ANN makes use of the advent of...
One of the main characteristics of Smart Grids is self healing. This means that the grid should rapidly detects, analyzes, acts and restores for system instabilities. Controlled islanding is one of the techniques used to mitigate these system instabilities. In order to split the system into islands, groups of coherent generators should be firstly identified. This paper proposes a k-means technique...
This paper proposes an Artificial Neural Networks (ANN) based technique for transient stability prediction. The ANN makes use of the advent of Phasor Measurements Units (PMU) for real-time prediction. Rate of change of bus voltages and angles is used to train a two layers ANN. Potential of the proposed approach is tested using the Egyptian Power System (EPS) as a study system.
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