Coal-fired power plant fire coal storage early warning method taking rainfall influence into account

Abstract

The invention discloses a coal-fired power plant fire coal storage early warning method taking the rainfall influence into account. The method includes the steps that firstly, meteorological data, power generation relevant data and transport data are acquired; secondly, the meteorological data and the power generation relevant data are input to a model for representing the influence of rainfall on coal consumption of a coal-fired power plant, and fire coal consumption of the coal-fired power plant on the t-th day is calculated; thirdly, the meteorological data and the transport data are input to a model for representing the influence of rainfall on fire coal land transport channel blockage, and the total fire coal feeding amount Tt received by the coal-fired power plant on the t-th day is calculated; fourthly, by the combination of predicted values of the two models, the fire coal storage predicted value of the coal-fired power plant is calculated under the condition that the rainfall influence is taken into consideration and compared with the standard fire coal storage Rstd of the coal-fired power plant, the storage situation is acquired, and different early warning measures are taken. According to the method, early warning criteria before rainfall and after rainfall are given, fire coal early warning can meet the practical situation, accuracy and timeliness of fire coal storage early warning are effectively improved, and it is guaranteed that a power grid safely and stably runs.

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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