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Circuit breaker (CB) installed for capacitor bank is the CB which commonly experiences the switching process due to the capacitor bank function as a voltage regulator. In closing switching process, CB encounter transient condition due to inrush current. In this paper, the simulation for studying the inrush current characteristic of capacitor bank switching in Indonesia has been performed. Simulation...
Mechanically switched capacitors (MSC) are very well known reactive power compensation devices which are extensively in use in power transmission systems. However, during switching of MSC in a high voltage grid, significant transients are found to appear across the capacitor bank bus as well as different elements of MSC which may lead to insulation degradation affecting the long term performance of...
Over-voltage and over-current of grid-connected inverters not only affect their grid-connected or isolated operation modes directly, but also relate to the safety of their components. Over-voltage and over-current of grid-connected inverters in non-fault conditions are investigated in this paper. The over-voltage on dc-link and the filter capacitor as well the over-current caused by inrush current...
Distribution transformers operating in modern system grids or in industrial networks are subjected to many switching transients. They may occur due to routine operations, network reconfigurations or reaction on protection signals. Depending on the network configuration and parameters such events my lead to external overvoltages and result in additional stresses on the insulation system. The paper...
This paper deals with damping modeling for transformer energization studies for system restoration purposes. A review of some of the literature recommendations for these studies is presented. Then, several damping models for generators, lines and transformers are benchmarked by means of simulation vs. field test measurements comparison. For the field test case considered, results show that simple...
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