An Optimal Control System for No. 0 Height Addition Based on Multi-data Judgment

Abstract

The invention relates to a No. 0 height plus optimization control system based on multi-data judgment, which includes 4 control levels, namely heating pipe control level, environmental protection control level, economic control level and primary frequency modulation control level, and is realized through 4 control levels After the unit is started and connected to the grid, the No. 0 high-pressure generator will be automatically put into operation throughout the whole process, and it will be put into operation according to the 0 pumping pressure, 0 pumping temperature, 0 No. These thermal control measurement values ​​and the primary frequency modulation slip signal can realize the heating pipe control, environmental protection control, economic control and primary frequency modulation control optimization of No. Improve the economic performance of the unit, and the frequency modulation load basically meets the small disturbance requirements, so as to ensure that the No. 0 high load is added at different stages of the unit operation to achieve different control objectives, and realize the maximum economic value of the unit from three aspects of energy saving, environmental protection and frequency modulation.

Description

technical field [0001] The invention relates to the technical field of automatic control of thermal power plants, in particular to a No. 0 height plus optimization control system based on multi-data judgment. Background technique [0002] As the requirements for energy saving, emission reduction and environmental protection are getting higher and higher, domestic power generation groups pay special attention to the application of new technologies for energy saving and environmental protection when building or expanding thermal power units. No. 0 high-pressure heater (No. 0 high-pressure heater) is a new technology with energy-saving and emission-reducing benefits. It can not only increase the flue gas temperature at the denitrification inlet at low load, meet the SCR catalyst activation temperature in a wider range, but also increase the partial load The combined use of the feed water temperature and the low-temperature economizer can improve the economy of the unit to the g...

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Problems solved by technology

[0003] At present, domestic power plants with No. 0 high addition have been put into operation, and the overall operation effect of No. 0 high addition is poor. The main problems are as follows: the temperature rise of the pipeline is not well controlled when it is put into operation, and there is a phenomenon of large vibration of the pipeline; No. 0 No in-depth economic analysis has been carried out by Gaojia; the contribution of No. 0 Gaojia to environmental protection has not been thoroughly investigated and analyzed; the primary frequency adjustment capability of No. 0 Gaojia has not been tested and applied

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