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The development of wind turbine engineering, which can be characterized by large inconsistencies in the amount of delivered electricity over time, generated new problems regarding the regulation of power engineering systems. At high and low wind speeds, the energy production falls rapidly, meaning that the conventional heat or steam-gas blocks have to be activated very quickly. Steam boilers in blocks have to be designed in a way that allows for a start-up of the block within a few dozen minutes. The main elements limiting the quick activation of steam boilers are thick-walled structural elements, in which heat induced stresses can occur during the start-up cycle.

Rapid Start-Up of the Steam Boiler Considering the Allowable Rate of Temperature Changes