Thermal network dynamic simulation method and device

Abstract

The invention relates to a thermal network dynamic simulation method and device, and belongs to the technical field of comprehensive energy service. The method comprises the steps: establishing a hydraulic working condition model and a thermal working condition model of a thermal network; in a pipeline characteristic equation of the hydraulic working condition model, enabling the density, which reflects the influence of the physical parameter, on the hydraulic working condition in the state that the temperature of a heat supply network medium changes, to serve as a variable for processing; inan energy equation of the thermal working condition model, taking the density and the specific heat capacity, which reflects the influence of the two physical property parameters on the thermal working condition in the state that the temperature of a heat supply network medium changes, as variables,. According to the invention, the temperature results calculated by the hydraulic working conditionmodel and the thermal working condition model are closer to the actual temperature, the error is small, and the reliability is high; through the specific heat capacity serving as the variable quantityin the energy equation, the energy storage effect of the stock working medium in the pipe network in the energy conveying process of the heat supply pipe network is fully considered, and the dynamiccharacteristics in the energy conveying process of the heat supply pipe network can be effectively reflected.

Description

technical field [0001] The invention belongs to the technical field of comprehensive energy services, and in particular relates to a dynamic simulation method and device for a thermal network. Background technique [0002] Integrated energy service is an energy service method to meet the diversified energy production and consumption of end customers. The integrated energy service provider uniformly manages its internal power distribution network, gas supply network, heat pipe network, water supply network and other energy equipment assets. Under the traditional energy infrastructure structure, there are obvious supply and demand boundaries between different types of energy, energy regulation and utilization efficiency is low, and it is impossible to accommodate distributed power sources such as wind energy and solar energy and flexible loads such as electric vehicles on a large scale. In contrast, the new energy system architecture, namely "Energy Internet", can use renewabl...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a thermal network dynamic simulation method and device, which is used to solve the problem that the temperature error of the fluid medium in the pipe section cannot be calculated by the thermal network dynamic simulation in the prior art.

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