The method of using the heat supply time lag to realize the thermal power unit participating in the system peak regulation dispatching method

Abstract

The invention relates to a method for enabling a thermoelectric unit to participate in system peak-load regulation scheduling by using heat supply time lag. The method comprises the following steps that: mathematical expression forms of heat supply time lag are provided; optimization scheduling of total heat load is carried out; the output range of a thermoelectric unit is regulated based on time lag; a wind-electricity-heat integrated scheduling model is built; and an optimization model solving strategy is adopted. The heat supply time lag is utilized, and therefore, difficulties in the peak-load regulation of a power grid caused by a situation that a thermoelectric unit does not participate in peak-load regulation or rarely participates in peak-load regulation in the past can be eliminated to a certain extent with work and life needs of people not affected. The method has the advantages of simple calculation, reasonable results, easiness in implementation, high application value and the like.

Description

technical field [0001] The invention relates to the field of active power dispatching of electric power systems, and relates to a method for realizing the participation of thermal power units in peak-shaving dispatching of the system by utilizing the heat supply time lag. Background technique [0002] At present, during the winter heating period in northern my country, thermal power units operate according to the constraints of "heat-based power generation". The peak-shaving range of thermal power units is small. In addition to the reverse peak-shaving characteristics of wind power, the phenomenon of wind abandonment is serious, resulting in a large amount of waste of clean energy. At present, in the power grid, the structure of traditional units has been basically fixed, and the combination mode of units is difficult to change. Therefore, in order to improve the peak-shaving capability of the system, it is particularly important to tap the output of thermal power units. In ...

AI Technical Summary

Problems solved by technology

The combination of combined heat and power and heat supply is not enough to meet the quality of heat supply; the user's demand for heat supply has a certain time lag, and the adjustment of heat supply in a short period of time will not affect the user's demand on a large scale

Research on the impact of reducing heat supply and reducing time on the user's room temperature will help to apply the heat supply time lag to the peak regulation of thermal power units; heat storage devices can store excess energy and release it when needed. Currently, heat storage devices are mainly installed Near the thermal power plant, and its economic benefit is not high, for the thermal power system, the user is a good heat storage carrier, and does not need to spend extra costs

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