Hydrogen production system for controlling the power output of power stations based on renewable energy sources and control process

摘要

It stands out mainly for consisting of a nested configuration of electrolysis units (5), independently operated, the nominal power values of which are descendant in such a manner that, for any unit of the system, the sum of the nominal power of the smaller electrolysis units (5) is always greater than or equal to the “dead band” (DB) of said units, allowing reduction of the dead band of said hydrogen production system (4) to negligible levels, avoiding loss or discharge of the energy generated in said renewable power stations, preferably one or several wind farms (2) formed by a group of wind turbines (1), connected to the power grid (3) as a consequence of the implementation of a primary control service therein or, in general, of any other active power control service, thereby optimizing the total energy obtained.

主权项

1. A hydrogen production system for controlling power in power stations based on renewable energy sources, comprising at least one level of two electrolysis units that are independently controlled comprising a larger electrolysis unit and a smaller electrolysis unit, the at least one level of electrolysis units being disposed in a descending nominal power configuration such that, for any level of electrolysis units, the nominal power of the smaller electrolysis unit is approximately equal to a dead band of the larger electrolysis unit, said dead band being the region in which the electrolysis unit cannot operate;
wherein the hydrogen production system is continuous throughout the operating range of the system thus reducing the dead band of said hydrogen production system to a negligible value, said value being lower than the dead band of a system with a single electrolysis unit and avoiding the loss or discharge of energy generated in a grid connected to renewable power stations.