Control system and method for the influence of atmospheric temperature on the power of combined cycle unit

Abstract

The invention relates to a regulation and control system and a method for effect of atmospheric temperature on power of combined cycle unit, and belongs to the technical field of electric power and energy saving. The method includes the steps that first sample data is collected through a sensing measurement module, original data and generated power data at test points on the combined cycle power generating unit are obtained under conditions of different atmospheric temperatures and a standard generated power, original data and generated power data at test points corresponding to the same atmospheric temperature are stored in a database module as a sample group; then several sample groups are selected from the database module by a simulation calculation module to build a original sample data set, and a maximum value and a minimum value of the original data at test points in the original sample data set are determined, and a maximum value and a minimum value of the generated power data at test points in the original sample data set are also determined; finally, a correction curve of effect of atmospheric temperature on the generated power of the combined cycle power generating unit is calculated by BP neural network. The regulation and control system and the method for effect of atmospheric temperature on the power of combined cycle unit have the advantages that the generated power of the combined cycle power generating unit is corrected without the need for various test debugging, a practical and reliable basis is provided for optimization of the unit and energy saving and emission reduction evaluation.

Description

technical field [0001] The invention relates to a technology in the field of electric power saving, in particular to a control system and method for the influence of atmospheric temperature on the power of a combined cycle unit. Background technique [0002] In recent years, rising coal prices and requirements for energy conservation and emission reduction have prompted power plants to carry out reforms to reduce energy consumption and improve economic efficiency. Therefore, high requirements have been put forward for the evaluation standards of power plant performance analysis. The comparable performance of the unit requires the performance parameters given under a certain design condition, that is, the performance of the unit under given boundary conditions. When performing performance tests on site, due to various reasons, all boundary conditions cannot meet the design conditions. Therefore, it is necessary to correct the boundary conditions during the performance test, t...

AI Technical Summary

Problems solved by technology

Usually the correction curve obtained after correction is provided by the manufacturer, but after the unit has been in operation for a period of time, especially the components of the unit have undergone energy-saving transformation, there have been some changes compared to the original design, and the original correction curve is no longer applicable

[0003] At present, there is still a lack of correction curves for the influence of atmospheric temperature changes on power generation for purely burning low calorific value blast furnace gas gas-steam combined cycle units

If the existing technical methods are used to complete the correction of the power generation, a lot of field tests are required, and other parameters must be adjusted according to the time node of the atmospheric temperature to conduct tests at the same level. Neither the power grid nor the power plant can be realized, and the risk of the test is high. Time long, expensive

Images