Sub-critical thermal power generating unit enhancing stimulation and simulation modeling method based on LABVIEW

Abstract

The invention discloses a sub-critical thermal power generating unit enhancing stimulation and simulation modeling method based on LABVIEW and belongs to the field of simulation data modeling. The method comprises the following steps that 1, boundary conditions for enhancing stimulation and simulation modeling are defined; 2, according to the boundary conditions defined in the step 1, all related online unit data in the boundary conditions described in the step 1 are classified; 3, a unit enhancing stimulation and simulation model is set up; 4, the online unit data and the unit enhancing stimulation and simulation model are in butt joint, and unit operation control data and a DCS(distributed control system) correlated to the sub-critical thermal power generating unit simulation model are in butt joint; 5, the deviation between parameters of the unit enhancing stimulation and simulation model and actual unit characteristic parameters is compared, and parameter values in a boiler side and turbine side enhancing stimulation and simulation model are corrected and optimized to obtain a simulation model; 6, stability precision is verified; 7, transient state precision is verified; 8, online simulation modeling is adjusted. According to the method, the simulation model meeting the production test requirement and approximate to the actual unit characteristic can be obtained.

Description

technical field [0001] The invention belongs to the modeling field of simulation data, in particular to a LABVIEW-based enhanced excitation simulation modeling method for a subcritical thermal power unit. Background technique [0002] First, the characteristics of the original simulation model and the characteristics of the actual industrial process on site did not consider the time problems caused by the actual storage lag and transmission, so the simulation model obtained based on this must have a large deviation from the actual production characteristics; second, The original subcritical thermal power simulation model only stimulates the simulation at several static load points such as 50%, 80%, and 100%, so as to obtain model data and parameters under static conditions. It is not enough to truly reflect the changes in the working conditions on site; [0003] Third, there are many types of thermal power units on site, and there is no common data interface and simulation ...

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Problems solved by technology

[0002] First, the characteristics of the original simulation model and the characteristics of the actual industrial process on site did not consider the time problems caused by the actual storage lag and transmission, so the simulation model obtained based on this must have a large deviation from the actual production characteristics; second, The original subcritical thermal power simulation model only stimulates the simulation at several static load points such as 50%, 80%, and 100%, so as to obtain model data and parameters under static conditions

It is not enough to truly reflect the changes in the working conditions on site;

[0003] Third, there are many types of thermal power units on site, there is no common data interface and simulation model interface compatible with all thermal power unit equipment, the development interface is not uniform, and it is difficult to debug and field application

It is not enough to truly reflect changes in on-site working conditions; there are many types of thermal power units on site, there is no common data interface and simulation model interface that can be compatible with all thermal power unit equipment, the development interface is not uniform, and it is difficult to debug and field application

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