DC distribution systems are a typical power electronic system with low inertia, low-rotational kinetic energy, and poor antidisturbance capability when loads fluctuate or parameters change. In this paper, virtual inertia control an additional first-order filtering link is proposed on the basis of P-Udc droop control. The results simulations experiments verify that reduces voltage change rate im...

The optical storage microgrid system composed of power electronic converters is a small inertia system. Load switching and supply intermittent will affect the stability direct current (DC) bus voltage. Aiming at this problem, virtual optimal control strategy applied to proposed. Firstly, signal model established theoretically analyze influence damping coefficient on DC voltage obtain constraint...

Variable speed hydropower (VSHP) is well suited for virtual inertia(VI) control as it can utilize the kinetic energy of turbineand generator to provide a fast power response frequencydeviation.

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...

With the increasing penetration of wind power, using turbines to participate in frequency regulation support power system has become a clear consensus. To accurately quantify inertia provided by doubly-fed induction generator (DFIG) based farm, response model DFIG with additional control is established, and then Routh approximation, explicit expression virtual moment derived for grid-connected ...

Renewable energy sources (RESs) are generally connected to the grid through power electronic interfaces, which generate electrical instantaneously with little inertia. With increasing penetration of RESs, will gradually develop into a low inertia and underdamped system, results in serious frequency stabilization problems. The virtual synchronous generator (VSG) is an emerging technology that mi...