A power generation energy consumption evaluation method of an energy balance unit of a thermal power plant

Abstract

The invention provides a power generation energy consumption evaluation method of an energy balance unit of a thermal power plant, which comprises the following steps: (1) calculating a total fuel energy Q1 input to the energy balance unit; (2) calculating the energy Q2 of the external steam and the high temperature medium input to the energy balance unit; (3) calculating the medium energy Q3 outside the output unit of the energy balance unit; (4) calculating the standard coal consumption B1 of the power generation of the energy balance unit, This is calculated as follows in the description, calculating the standard coal consumption B2 of the energy balance unit. This is calculated as follows in the description, where Wf is the external electrical energy of the energy balance unit, W1 is the output power of the energy balance unit, and W3 is the output power of the energy balance unit. The power plant energy consumption evaluation method of the invention adopts the overall energy balance mode, only testing and calculating the energy input and the energy output of the energy balance unit can calculate the power generation standard coal consumption and the power supply standard coalconsumption of the energy balance unit.

Description

technical field [0001] The invention relates to a power generation energy consumption evaluation method of an energy balance unit of a thermal power plant. Background technique [0002] At present, when thermal power plants conduct unit performance tests, the standard coal consumption for power generation and the standard coal consumption for power supply are used as the final performance indicators. When calculating the standard coal consumption of generators for power generation and power supply, due to the positive balance accounting method, the accuracy of weighing coal into the boiler is very low, which will lead to excessive uncertainty. After the coal is burned in the boiler, the heat is transferred to the steam, and then enters the steam turbine to do work to drive the generator to generate electricity and output electric energy. This process lasts for a long time. Generally, for large-scale thermal power generation units, it takes at least a few minutes from the co...

AI Technical Summary

Problems solved by technology

The test period is long, the measurement points are numerous, the cumulative error in the calculation process is large, the cost of accounting performance indicators is high and the accuracy is low

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