Novel wind power generation comprehensive benefit assessment method

Abstract

The invention relates to a novel wind power generation comprehensive benefit assessment method, which is characterized in that: according to acquired data, the wind power generation benefit and thermal power generating cost are assessed under different load levels; and the comprehensive benefit of the wind power generation is assessed by considering the wind power generation additional benefit and the thermal power generation cost increment comprehensively, so that network-wide wind power generation benefit and the thermal power generation cost which are caused by the additional generation of the generated power of wind power station groups are assessed quantitatively under different load levels, and the comprehensive benefit of the network-wide wind power generation is assessed effectively so as to measure the effect of wind power fluctuation on the comprehensive benefit of network-wide power generation. The assessment method is scientific and reasonable.

Description

technical field [0001] The invention relates to the field of wind power generation, and is a novel comprehensive benefit evaluation method for wind power generation. Background technique [0002] With the depletion of fossil energy and the intensification of environmental pollution, the development and utilization of renewable energy has become a research hotspot in various countries. As a renewable clean energy, wind energy has been widely developed and utilized in recent years, and wind power generation is an effective way to realize large-scale development and utilization of wind energy. However, since the output power of wind turbines depends on the natural wind speed, it is volatile and unpredictable. Therefore, when the capacity of wind turbines accepted in the grid exceeds a certain proportion, the fluctuation of wind power will increase the peak load of the grid. [0003] For a power grid dominated by thermal power peak regulation, during peak load hours, thermal po...

AI Technical Summary

Problems solved by technology

However, during the low load period, the thermal power peak-shaving units in the system usually enter the low-load operation state, and their downward peak-shaving ability is very limited, which has become the main bottleneck of system operation adjustment. The unit will enter an unconventional peak-shaving operation state, and the unit will be forced to operate with oil to ensure stable combustion. Under this operating state, pulverized coal combustion is insufficient, and the amount of smoke and dust increases, resulting in a decrease in boiler combustion efficiency and an increase in coal consumption for power generation. , may also induce secondary combustion of pulverized coal and oil sticky matter in the tail flue of the boiler, threatening the safe operation of the boiler

Therefore, during the low load period, the power generation of the wind farm group increases, which may cause the thermal power peaking unit in the grid to enter an unconventional peaking operation state, resulting in an increase in the operating cost of the thermal power peaking unit and the increase in power generation smoke and dust emissions

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