Method and device for regulating a process within a system, in particular a combustion process in a power station

A method for controlling a process in a system, particularly a combustion process in a power plant, a waste incineration plant or a cement plant, the process to be controlled comprising pre-processing of a raw material, processing the pre-processed raw material and acquisition of the result of the processing of the pre-processed raw material, the method comprising the following steps:

• capturing input variables of the pre-processing of raw material over a first predetermined period;
• capturing output variables of the pre-processing of raw material 4 over a second predetermined period, which correspond to the input variables of the processing of the pre-processed raw material;
• and
• capturing output variables of the processing of the pre-processed raw material 6 over a third predetermined period, which correspond to the result of the processing of the pre-processed raw material, wherein the process in the system is controlled by:
• adapting the pre-processing of the raw material by means of carrying out actuating actions regarding the pre-processing of the raw material;
• and/or
• by adapting the processing of the pre-processed raw material by carrying out actuating actions regarding the processing of the pre-processed raw material, wherein the method further comprises the following steps:
• creating a first process model, which describes the effects of adapting the pre-processing of raw material on the output variables of the processing of the pre-processed raw material;
• creating a second process model, which describes the effects of adapting the processing of the pre-processed raw material on the output variables of the processing of the pre-processed raw material;
• and
• creating of a third process model, which describes the effects of adapting the pre-processing of raw material and adapting the processing of pre-processed raw material on the output variables of the processing of pre-processed raw material, wherein:
• the first process model, the second process model and the third process model are each created for at least two different time scales;
• the process in the system is controlled by adapting the pre-processing of the raw material and/or adapting the processing of the pre-processed raw material taking into account control objectives for the result of the processing of the pre-processed raw material according to the predictions of at least one of the created process models.