Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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

A power plant and coal-fired technology, applied in instruments, data processing applications, calculations, etc., can solve problems such as fluctuations in coal reserves, increased daily coal consumption, insufficient coal reserves, etc., to reduce the probability of coal shortages , improve accuracy and timeliness, and reduce the effect of coal shortage shutdown accidents

Inactive Publication Date: 2017-01-25
STATE GRID HENAN ELECTRIC POWER +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A coal-burning reserve early warning method for coal-fired power plants considering the influence of precipitation
  • A coal-burning reserve early warning method for coal-fired power plants considering the influence of precipitation
  • A coal-burning reserve early warning method for coal-fired power plants considering the influence of precipitation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0086] 1. Data acquisition.

[0087] Suppose a coal-fired power plant A is supplied with coal by two coal plants H and G. By querying meteorological historical data, traffic historical data and current coal moisture test, the following data are obtained: (1) The data of precipitation intensity q and corresponding air relative humidity h near coal-fired power plant A are shown in Table 1.

[0088] Table 1 Data of precipitation intensity q and corresponding air relative humidity h

[0089] Precipitation intensity q (mm / h) 0.2 5 18 34 66 142 Relative air humidity h (%) 91.85 95.07 96.10 97.57 98.72 99.41

[0090] (2) Air-drying basis moisture M of the coal type used in coal-fired power plant A ad and air relative humidity h data, as shown in Table 2.

[0091] Table 2 Air-dried basis moisture M ad and air relative humidity h data

[0092] Relative air humidity h (%) 50 60 70 80 90 100 Air dry base moisture M ad (%)

7.42...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06Q50/06
Inventor 王子琦郭源善孙建华郑华袁语付红军
Owner STATE GRID HENAN ELECTRIC POWER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products