Combination method of combined heat-power unit based on heat storage efficiency of heating pipe network

Abstract

The invention relates to an electricity and heat combined unit combination method based on heating pipe network heat storage efficiency, belonging to the technical field of operation and control of a power system of multiple energy coupling. According to the method, firstly, an electricity and heat combined unit combination model related to an integrated heating pipe network heat storage characteristic is established, and the model is formed by a target function and constraint conditions. The target function of the model is electricity and heat combined system operation total cost minimization, the constraint conditions are divided into a power system operation constraint condition and a heating system operation constraint condition, wherein the heating system operation constraint condition comprises an integrated heating system model reflecting the integrated heating pipe network heat storage characteristic. Finally the electricity and heat combined unit combination model is solved by an iterative solution algorithm, and an obtained optimal solution is taken as an electricity and heat combined unit combination scheme. According to the electricity and heat combined unit combination method, the heat storage efficiency of a heating pipe network can be fully developed, and the problem of wind power consumption shortage in the northern China in the winter can be solved.

Description

technical field [0001] The invention belongs to the technical field of operation and control of a power system coupled with multiple energy sources, and in particular relates to a combination method of heat-electricity combined units based on the heat storage efficiency of a heating pipe network. Background technique [0002] A large amount of wind power is gathered in northern my country, and wind abandonment is particularly serious in winter. During winter, the urban heating network mainly provides centralized heating through large-scale cogeneration units. In the "power-by-heat" operating mode, the cogeneration units are limited by the minimum power supply output to ensure that the heat supply meets the heat load demand. Restricted by the operation mode of "heating to determine power", a large number of combined heat and power units start up during winter heating and keep running at the minimum power output state. At the same time, the output space of conventional units ...

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Problems solved by technology

The method of the invention can fully develop the heat storage efficiency of the heat network pipe network, and effectively solve the problem of insufficient wind power consumption in winter in northern my country

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