A coal-burning reserve early warning method for coal-fired power plants considering the influence of precipitation

Abstract

The invention discloses a coal-fired reserve early warning method for a coal-fired power plant considering the influence of precipitation. The method is as follows: 1) Obtain meteorological data, power generation related data and transportation data; 2) Input meteorological data and power generation related data into the model of the influence of precipitation on coal consumption of coal-fired power plants, and calculate the coal consumption of coal-fired power plants on day t 3) Input the meteorological data and transportation data into the impact model of the coal-fired land transportation channel blocked by precipitation, and calculate the total coal-fired delivery amount Tt received by the coal-fired power plant on day t; 4) Combine the two models to get Calculate the predicted value of the coal-fired power plant's coal reserve under the influence of precipitation, and compare the standard coal reserve Rstd of the coal-fired power plant to obtain the reserve situation and take different early warning measures. This method gives the early warning criteria before and after the occurrence of precipitation, which makes the early warning of coal combustion more in line with the actual situation, effectively improves the accuracy and timeliness of the early warning of coal storage, and ensures the safe and stable operation of the power grid.

Description

technical field [0001] The invention belongs to the technical field of electric meteorological early warning, and in particular relates to a coal-fired reserve early warning method of a coal-fired power plant considering the influence of precipitation. Background technique [0002] As of the end of November 2013, the installed capacity of power plants with a capacity of 6,000 kilowatts and above was 1.18 billion kilowatts, of which thermal power installed capacity was 848 million kilowatts, accounting for 71.86% of the total installed capacity; from January to November 2013, power plants above designated size nationwide The output is 4,741.3 billion kwh, of which thermal power plants above designated size generate 3,812.6 billion kwh, accounting for 80.41% of the total. Among the installed capacity of thermal power, the installed capacity of coal-fired power plants accounts for more than 90%. It can be seen that coal-fired power plants play an extremely important role in the...

AI Technical Summary

Problems solved by technology

But in reality, there are many factors that will destroy this balance, resulting in fluctuations in coal reserves, and even shortages in severe cases, thus affecting the normal operation of coal-fired power plants

Precipitation is one of its important factors. On the one hand, precipitation will increase the moisture content of coal-fired coal and reduce the calorific value, resulting in an increase in daily coal consumption; on the other hand, continuous precipitation will also affect the capacity of coal-fired transportation channels, resulting in daily Reduced coal delivery

Taken together, the increase in daily coal consumption and the decrease in daily coal delivery will lead to a reduction in coal reserves, which may lead to insufficient coal reserves, resulting in insufficient output of coal-fired generating units, or even Stop due to lack of coal

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