System for reducing power consumption of electrostatic dust collector and control method thereof

Abstract

The invention provides a system for reducing power consumption of an electrostatic dust collector and a control method thereof. The input end of a microcomputer controller of the system is further connected with a manual / automatic switching module, the input end of the manual / automatic switching module is connected with a high-voltage electric field parameter manual setting module and a high-voltage electric field parameter automatic controller, and the input end of the high-voltage electric field parameter automatic controller is connected with a load feedback module, a water-coal ratio feedback module and a smoke content feedback module. The method comprises the following steps: acquiring parameters such as the unit load P of a generator set, the water-coal ratio D of a power generationsteam boiler and the smoke content G of a total exhaust port of a power plant; operating parameters of a high-voltage electric field of the electrostatic dust collector are automatically adjusted; flexibly adjusting the secondary voltage U2 and the secondary current I2 of the high-voltage electric field of the electrostatic dust collector according to the actual field work condition of a power plant. the power consumption of the electrostatic dust collector is reduced, the power supply coal consumption of a coal-fired power plant is reduced, the overall power generation benefit of a unit is improved, meanwhile, smoke dust emission is reduced, and contributions are made to environmental protection.

Description

technical field [0001] The invention relates to the technical field of energy saving and emission reduction, specifically a system for reducing power consumption of an electrostatic precipitator and a control method thereof. Background technique [0002] As a large power consumer of coal-fired power plants, electrostatic precipitators have a great influence on the power consumption rate of the plant, which is directly related to the size of coal for power supply, and coal consumption for power supply is the three major indicators of coal-fired power plants (electricity, power supply Coal consumption, plant power consumption rate) is the top priority. How to improve the dust collection efficiency of the dust collector, ensure that the discharge meets the environmental protection standards, reduce the power consumption rate of the electrostatic precipitator plant, and realize the optimized operation of the dust collector for energy saving and environmental protection are urgen...

AI Technical Summary

Problems solved by technology

[0003] The parameters of the high-voltage electric field of the existing precipitator are manually set at one time. In order to ensure the discharge of smoke and dust, they are basically set according to the highest parameters, that is, to keep the high-voltage electric field of the electrostatic precipitator operating near the rated voltage and rated current, and cannot follow the load. In the low load period, the actual amount of smoke is much smaller than that under the rated load, and the total amount of smoke in the smoke is not large, so it can be completely reduced at this time. It is very uneconomical to maintain the high-parameter operation of the high-voltage electric field

[0004] Secondly, the dust collection efficiency of the electrostatic precipitator is closely related to the specific resistance of the fly ash. After the characteristics of the fly ash in the dust change, the dust collection efficiency will change greatly. Therefore, the setting of the high-voltage electric field parameters should also consider this part of the factor , while prior art does not take into account

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