System and method for acquiring power supply coal consumption characteristic curve of coal-fired power generating unit under deep peak load adjustment load

Abstract

The invention provides a system and a method for acquiring a power supply coal consumption characteristic curve of a coal-fired power generating unit under deep peak adjustment load. The method comprises the following steps: step 1, acquiring a data frame of the coal-fired power generating unit; step 2, obtaining an effective data frame from the data frames; respectively calculating a daily load rate, a daily depth peak adjustment load rate, a daily non-depth peak adjustment load rate and a daily depth peak adjustment generating capacity proportion corresponding to each group of effective observation data in the effective data frame; 3, setting a quadratic function between the unit load rate and the power supply coal consumption; 4, setting a target function; obtaining a power supply coal consumption characteristic curve under the deep peak load adjustment load of the unit; according to the method, the power supply coal consumption characteristic curve under the deep peak adjustment load is obtained by using the actual operation parameters of the coal-fired unit, and the defect of high cost of an existing performance test method can be effectively solved.

Description

technical field [0001] The invention relates to the field of calculation of energy consumption indicators of coal-fired generating sets, in particular to a system and method for obtaining coal consumption characteristic curves of power supply under deep peak-shaving loads of coal-fired generating sets. Background technique [0002] With the continuous increase in the installed capacity of new energy and the continuous decline in the curtailment of wind and light caused by the rapid development of power grid construction, the utilization hours of coal-fired power plant units have continued to decline, and the long-term low load has become normal. In order to enhance the profitability of enterprises, domestic coal-fired power stations have successively carried out flexibility transformation work, so as to carry out deep peak regulation to earn two subsidy rules of the power grid. The backlash was severe. In order to further carry out the work of energy saving and consumption ...

AI Technical Summary

Problems solved by technology

The theoretical method is to predict the coal consumption of deep peak load power supply by establishing a variable working condition calculation model of the unit, but the thermal system of the unit under deep peak regulation may change according to the actual operation needs, so the limitation of the theoretical method is that it cannot predict the thermal system The impact of changes on coal consumption; second, the theoretical method is based on the assumption of small disturbances, and the prediction error will increase significantly under large changes in parameters such as deep peak shaving; the test method can obtain accurate results, but the test method has high manpower and material resources , financial costs, and the test results can only represent the operating status of the unit during the test

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