Power distribution method based on wind power and thermal power combined power generation

Abstract

The invention provides a power distribution method based on wind power and thermal power combined power generation. According to the power distribution method, adjustment of a thermal power generating unit is started by judging whether the cross section margin of grid connection point exceeds an upper limit value or a lower limit value, so that the adjustment frequency of the thermal power generating unit is reduced; under the condition that the wind power generation output is larger, the strategy that the wind power is restrained appropriately is taken into consideration, shutdown operation of the thermal power unit is not likely to happen, and harmful operation conditions of a thermal power plant are reduced; under the condition of a certain power instruction, the strategy that wind power and thermal power are delivered out in a bundled mode is adopted, wherein the priority is given to wind power during delivery, when the total generated power of the wind power and the thermal power exceeds the power instruction, reduction of the output of the thermal power unit is taken into consideration, and if when the thermal power unit operates at the minimum technical output, the total power of the wind power and thermal power stills exceeds the power instruction, the measure that a wind power plant stops wind power generation so as to enable the total delivered power to be controlled within the power instruction is taken into consideration.

Description

technical field [0001] The invention belongs to the technical field of power system power generation, and mainly relates to how to increase the output of wind power generation and make full use of green energy under the current situation of a large number of restrictions on wind power generation and wind abandonment. The utilization rate of wind power can be improved by adopting the strategy of combining wind power generation and thermal power generation for bundling and sending out. The present invention proposes a power distribution method based on wind power generation and thermal power generation. Background technique [0002] With the concentrated construction of large-scale wind farms in my country, the installed capacity of wind farms continues to increase, and the proportion of wind power in the power grid is increasing. Due to the characteristics of randomness, intermittentness, and uncontrollability of wind power output, this brings many problems to the safety disp...

AI Technical Summary

Problems solved by technology

Due to the randomness and volatility of wind turbine output, its daily output varies greatly. In order to meet the system's peak regulation and frequency regulation requirements, if the shutdown strategy is adopted for the thermal power unit when the wind turbine is in full swing, the thermal power unit needs frequent start and stop operations. This is not only unfavorable to the operation of the thermal power plant, but also will cause a lot of start-up and stop costs, so the shutdown of the thermal power unit is not considered when the wind power is large

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