Steam upgrading system for flexible peak regulation of fossil power plant and control method

Abstract

The invention relates to a steam upgrading system for flexible peak regulation of a fossil power plant and a control method. The steam upgrading system comprises a boiler, a main steam outlet of the boiler is communicated with a high-pressure cylinder, and a reheater of the boiler is communicated with the steam discharging end of the high-pressure cylinder; steam passes through the reheater of theboiler and then is output to a middle-pressure cylinder, discharged steam of the middle-pressure cylinder enters a low-pressure cylinder, and discharged steam of the low-pressure cylinder enters an air cooling island; a steam outlet of the reheater is communicated with the high-pressure steam inlet side of a jet device through a first steam pumping pipe in the signal direction; a steam pumping port of the low-pressure cylinder is communicated with the low-pressure steam inlet side of the jet device through a second steam pumping pipe; a steam pumping port of the middle-pressure cylinder is communicated with the high-pressure steam inlet side of the jet device through a third steam pumping pipe in the single direction; a first valve set is arranged on the first steam pumping pipe, and a second valve set is arranged on the second steam pumping pipe; a third valve set is arranged on the third steam pumping pipe.

Description

technical field [0001] The invention relates to a steam quality improvement system and a control method for flexible peak regulation of a thermal power unit, and belongs to the fields of thermal power unit peak regulation and industrial steam supply. Background technique [0002] According to statistics, the national average wind abandonment rate in 2015 was 15%, and the wind abandonment problem in the "Three North" region was particularly severe, with the wind abandonment rate exceeding 30%. Thermoelectric unit. In winter, thermal power units operate in a thermally constant power mode, and their peak-shaving capacity is very limited, resulting in unnecessary waste of renewable energy. [0003] Since 2006, my country's new energy industry has developed rapidly, and the capacity of wind power and solar energy has continued to increase. However, due to the slowdown of economic development and social electricity consumption, as well as the volatility of new energy, the level ...

AI Technical Summary

Problems solved by technology

However, due to factors such as economic development and the slowdown of social electricity consumption, as well as the volatility of new energy, the level of management and utilization, and the imperfection of supporting policies, the consumption of new energy has become a new problem that needs to be solved urgently in the field of energy and power.

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