Doubly-fed induction generator (DFIG) based wind turbines with traditional maximum power point tracking (MPPT) control provide no inertia response under system frequency events. Recently, the DFIG wind turbines have been equipped with virtual inertia controller (VIC) for supporting power system frequency stability. However, the conventional VICs with fixed gain have negative effects on inter-ar...

Virtual inertia is an effective control approach to attenuate sudden voltage changes during transient events in low-inertia dc grids. While methods have been proposed implement virtual inertia, its impact on grid stability the presence of constant power loads (CPLs) remains unclear. In this letter, we perform a rigorous analysis for grids with CPLs powered by virtual-inertia-enhanced converters...

New types of power system transients with lower time constants are emerging due to the replacement synchronous generation converter interfaced and challenging modeling approaches conventionally applied in simulation. Quasi-stationary simulations based on classical phasor models, whereas EMT calculate instantaneous values models domain. In addition these conventional approaches, this paper inves...

Fossil Fuels are always considered as environmental pollutants. On the other hand, the political and economic situations highly affect the price of these fuels. Offshore wind and wave, as renewable energy sources, represent the better alternatives for electricity generation. Therefore, it is necessary that wind speeds effectively be estimated due to the absence of field measurements of the wind...

Virtual synchronous machine (VSM) based high voltage dc systems enhance the inertia of power system. However, dynamic interactions between VSM-based rectifier station, inverter and grid could induce system oscillation, which has been investigated in this article. At first, hybrid ac–dc impedance models VSMs considering coupling ac dynamics are established. Then, relationships impedance, <italic...

In this paper, the development and optimization of Power Distribution Control Strategy (PDCS) have been performed for a Hybrid Energy Storage Systems (HESS) of a Series Hybrid Electric Bus (SHEB). A common PDCS is based on the use of Ultra-Capacitor (UC) pack. A new simple PDCS is developed as a battery based one. For the battery based PDCS, four parameters ar...

Primary frequency control in power systems is becoming more difficult as levels of non-synchronous generation grow. This paper explores how implementing a strategy based on the concept virtual inertia, supported by use battery energy storage (BESS), might positively impact stability grid. Particularly, this work centers its effort islanded microgrids hybrid generation: photovoltaic and diesel. ...