Online monitoring method for hour-level carbon emission of thermal power plant

Abstract

The invention discloses a thermal power plant hour-level carbon emission on-line monitoring method, which comprises the following steps: forming a unit output-carbon emission intensity characteristic curve by using historical data learning based on a generating capacity method, and calculating the carbon emission according to the real-time output of a unit; calculating to obtain power generation carbon emission intensity by using the material consumption of the previous day based on a material method, and then calculating the carbon emission according to the real-time output of a unit; and calculating the carbon emission by using the carbon dioxide concentration or the oxygen concentration in the CEMS system based on a flue gas method. And determining the final unit hour-level carbon emission according to whether the carbon emission curves calculated by the three methods are in the same group or not. According to the method, hour-level accurate online monitoring of the carbon emission of the thermal power plant can be realized, the defects of a single calculation method are overcome, calculation result deviation caused by errors of a certain calculation method is avoided, and support is provided for accurate monitoring of the hour-level carbon emission of the thermal power plant.

Description

technical field [0001] The invention relates to an on-line monitoring method of hourly carbon emission in a thermal power plant, belonging to the technical field of carbon emission monitoring. Background technique [0002] As the executor of carbon reduction goals, the power system is the key to implementing policies. [0003] Electricity data is not only a barometer of the economy and society, but also an indicator light of carbon emission levels. The power system, especially the power grid as a hub platform, shoulders the dual challenges of ensuring energy supply security and substantially reducing total carbon emissions, and is the main supporter for continuously ensuring energy security and realizing energy clean and low-carbon transformation. [0004] The direct carbon emissions of the power system mainly come from the combustion of fossil fuels in thermal power plants, but the current calculation of carbon emissions from thermal power plants is mainly carried out in a...

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Problems solved by technology

[0004] The direct carbon emissions of the power system mainly come from the combustion of fossil fuels in thermal power plants, but the current calculation of carbon emissions from thermal power plants is mainly carried out in accordance with the greenhouse gas accounting guidelines for power generation companies. The calculation results of this method are relatively accurate, but at least there is a daily level. Time lag; although real-time monitoring can be carried out based on the power generation method, it lacks the carbon emission intensity parameters of the unit; because the domestic CEMS system does not contain a carbon dioxide concentration measurement module, and the measurement of flue gas flow rate and concentration is prone to large errors, the method based on the actual measurement of flue gas Not yet widely available

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