A method and system for calculating and monitoring primary frequency modulation capability

Abstract

The invention discloses a method and system for calculating and monitoring the primary frequency modulation capability, which can obtain the main steam valve opening degree, real-time main steam temperature and main steam pressure of a heating unit; input them into a pre-trained calculation model, and output real-time actual The predicted value of power and the predicted value of standard coal consumption; the difference between the predicted value of actual power and the real-time value of the current actual power is calculated to obtain the real-time calculation value of the primary frequency regulation capability; the predicted value of standard coal consumption and the corresponding load under the theoretical sliding pressure of the unit The difference calculation of the standard coal consumption under the condition of the current primary frequency regulation capacity is performed to obtain the standard coal consumption loss; the real-time calculation value of the primary frequency regulation capability is used as the abscissa, and the standard coal consumption loss is used as the ordinate to display the curve. Advantages: the present invention has higher calculation accuracy and self-learning correction capability, which provides a basis for better understanding of the primary frequency regulation margin of the unit and the economic loss of the thermal power unit.

Description

technical field [0001] The invention relates to a primary frequency regulation capability calculation and monitoring method and system, belonging to the technical field of thermal power engineering and thermal control of power plants. Background technique [0002] At this stage, the power grid dispatching agency can only judge the effect of the primary frequency regulation after the unit load is actuated by the frequency regulation on-line monitoring system, and cannot continuously monitor the primary frequency regulation capability of the unit in real time. Therefore, under different conditions of the power grid, it is necessary to make an online assessment of the primary frequency regulation capability of the power grid, so that the power grid can have sufficient primary frequency regulation capability under the changing load demand, so that the operating state of the power grid can be more controllable improve the ability of large power grids to cope with sudden load chan...

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Problems solved by technology

[0003] In addition, for thermal power units, especially ultra-supercritical units, the throttling loss is the smallest when the control door is fully open, and the economy is the best, but the primary frequency regulation capability is the weakest. The problem that enterprises pursue the economic benefits of units and ignore the primary frequency regulation capability has long plagued power management. and scheduling department

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