microgrids are nowadays used to produce electric energy with more efficiency and advantage. however, the use of microgrids presents some challenges. one of the main problems of the microgrids widely used in electrical power systems is the control of voltage, frequency and load sharing balance among inverter- based distributed generators (dgs) in islanded mode. droop method performance degrades ...

The changing nature of the distribution grid leads to new concerns in system operation. New resources connected at the distribution level, changing load characteristics, and increased reliability requirements all point to the need for improved monitoring and control capabilities. Many existing synchrophasor applications have been installed to address distribution concerns. These applications in...

The rapid growth of the power demand in the transport sector results in a dramatic increase of carbon dioxide emissions. This is only one of many reasons why alternative drive concepts, especially electric mobility, have never been more in focus than today. A future change from combustion engines to electric drives leads to additional loads, which gives rise to the necessity to take corrective ...

In developing countries, power system planning faces nowadays enormous challenges and various problems as, for example, future load growth in the face of uncertainties associated with future load forecasting, the constraints imposed on investment, the type and availability of fuel for the generating units, the need for consolidating dispersed electric utilities in the isolated regions as a prer...

The speed profile of the train will be determined according to criteria such as safety, travel convenience, and the type of electric motor used for traction. Due to the passengers and cargo on the train, the electric train load is constantly changing. This will require reassigning the speed controller’s parameters of the electric train. For this purpose, the Gravitational Search optimization Al...

The electrical mobility is no universal remedy, but possibly the best alternative to gasoline and diesel. The power requirement of the traffic sector grows with an incredible speed, in particular stronger than in all other sectors of the final consumption and therefore the carbon dioxide emissions rises too. To achieve a reduction in green house gases, the search for alternative drive concepts ...