Method for ordering power by heat of heat supply unit based on turbine energy balance

Abstract

The invention relates to a method for ordering power by heat of a heat supply unit based on turbine energy balance. The method comprises the following steps that according to turbine energy balance, a mathematic model of the heating steam extraction flow and industrial steam extraction flow of the heat supply unit relative to active power is obtained; according to the mathematic model, the relational expression of the minimum load to the maximum load of the unit is determined; stray losses such as valve steam leakage, heat transfer and radiation losses existing in the steam turbine flow process are considered, parameters of the relational expression of the minimum load to the maximum load are recognized and corrected by means of the least square method to obtain a precise mathematic model; data obtained from a unit DCS is transmitted to a system master station, the minimum load value and the maximum load value of the unit are obtained and transmitted to a power grid dispatching control center; integration is performed on the relational expression of the minimum load to the maximum load, an expression of the minimum electric quantity and the maximum electric quantity relative to the heat supply amount relation is obtained, according to the heat supply amount of various power plant reported units, the minimum and maximum electric generation capacities are determined, and the basis is provided for formulating an electric quantity plan.

Description

technical field [0001] The invention relates to a heat-supplying method for heat supply units based on steam turbine energy balance, which is mainly applied to the dispatching of heat supply units in thermal power plants, electric power and electric quantity prediction, and solves the problem of peak regulation in the power grid during the heating period, thereby maximizing the acceptance of hydropower, The purpose of clean energy such as wind power, photovoltaic and nuclear power is to reduce energy consumption and reduce pollutant emissions. Background technique [0002] At present, cogeneration units are mostly used in Northeast and Northwest my country to provide winter heating and heating. When the capacity of heating units accounts for a large proportion of the entire power grid, because the power dispatching department cannot timely grasp the online heating status of each unit, in order to ensure the supply Thermal reliability, the heating unit has a large power genera...

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Problems solved by technology

Publication No. CN101619850A "Scheduling Method and System Based on On-Line Prediction of Thermal Power System Load", the main objects of the dispatching method of this invention are the core equipment boilers and steam generators of the thermal power production system, and there is no regulation on the power grid for the power generation load of the thermal power unit. Elaboration on the influence of the peak

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