System and method for optimizing combustion of boiler

A method of controlling a boiler having a plurality of areas, the method comprising:

• collecting information on a current operating state of the boiler to determine whether to perform a combustion optimization operation for the boiler;
• pre-processing data collected from the boiler;
• creating a boiler combustion model based on the pre-processed data;
• performing the combustion optimization operation using the boiler combustion model and the pre-processed data to calculate an optimum control value for a first time period;
• and
• controlling a plurality of control objects of the boiler by reflecting the optimum control value to a boiler control logic, the plurality of control objects including control of an amount of coal that is fed from a coal feeder to a combustion chamber of the boiler and an adjustment of a damper angle of each of a plurality of dampers installed in the boiler,
• wherein each of the plurality of control objects of the boiler is controlled by:
• dividing a control range of a corresponding control object of the plurality of control objects of the boiler into a plurality of continuous stage sub-ranges;
• checking a current operating state of the corresponding control object prior to the controlling of the executed program steps;
• and
• reflecting the optimum control value in the boiler control logic existing for the current operating state,
• wherein the corresponding control object is controlled for each stage of the plurality of continuous stage sub-ranges and is controlled during each of a plurality of second time periods respectively corresponding to the plurality of continuous stage sub-ranges, each of the plurality of second time periods being shorter than the first time period,
• wherein the plurality of dampers includes a group of dampers installed in each area of the plurality of areas of the boiler, each of the groups of dampers including a plurality of parts of damper groups, each of the plurality of parts of damper groups including at least one unit of dampers, each of the at least one unit of dampers comprising a damper that is separate from all other dampers,
• wherein the optimum control value is calculated for each damper of the plurality of dampers such that the combustion optimization operation includes a plurality of operations,
• wherein the combustion optimization operation is performed by a first operation of the plurality of operations, a second operation of the plurality of operations, and a third operation of the plurality of operations,
• wherein the first operation of the plurality of operations is performed over a large scale range on each damper of the plurality of dampers,
• wherein the second operation of the plurality of operations is performed over a medium scale range on the dampers for each area on the basis of a value calculated by the first operation, the medium scale range being a smaller scale range than the large scale range, and
• wherein the third operation of the plurality of operations is performed over a small scale range on individual dampers in each area of the plurality of areas, respectively, the small scale range being a smaller scale range than the medium scale range.

A non-transitory computer-readable storage medium storing instructions of executing a method of controlling a boiler having a plurality of areas, the method comprising:

• collecting information on a current operating state of the boiler to determine whether to perform a combustion optimization operation for the boiler;
• pre-processing data collected from the boiler;
• creating a boiler combustion model based on the pre-processed data;
• performing the combustion optimization operation using the boiler combustion model and the pre-processed data to calculate an optimum control value for a first time period;
• and
• controlling a plurality of control objects of the boiler by reflecting the optimum control value to a boiler control logic, the plurality of control objects including control of an amount of coal that is fed from a coal feeder to a combustion chamber of the boiler and an adjustment of a damper angle of each of a plurality of dampers installed in the boiler,
• wherein each of the plurality of control objects of the boiler is controlled by:
• dividing a control range of a corresponding control object of the plurality of control objects of the boiler into a plurality of continuous stage sub-ranges;
• checking a current operating state of the corresponding control object prior to the controlling of the executed program steps;
• and
• reflecting the optimum control value in the boiler control logic existing for the current operating state,
• wherein the corresponding control object is controlled for each stage of the plurality of continuous stage sub-ranges and is controlled during each of a plurality of second time periods respectively corresponding to the plurality of continuous stage sub-ranges, each of the plurality of second time periods being shorter than the first time period,
• wherein the plurality of dampers includes a group of dampers installed in each area of the plurality of areas of the boiler, each of the groups of dampers including a plurality of parts of damper groups, each of the plurality of parts of damper groups including at least one unit of dampers, each of the at least one unit of dampers comprising a damper that is separate from all other dampers,
• wherein the optimum control value is calculated for each damper of the plurality of dampers such that the combustion optimization operation includes a plurality of operations,
• wherein the combustion optimization operation is performed by a first operation of the plurality of operations, a second operation of the plurality of operations, and a third operation of the plurality of operations,
• wherein the first operation of the plurality of operations is performed over a large scale range on each damper of the plurality of dampers,
• wherein the second operation of the plurality of operations is performed over a medium scale range on the dampers for each area on the basis of a value calculated by the first operation, the medium scale range being a smaller scale range than the large scale range, and
• wherein the third operation of the plurality of operations is performed over a small scale range on individual dampers in each area of the plurality of areas, respectively, the small scale range being a smaller scale range than the medium scale range.