Hot steam network steady state simulation method, system, equipment and medium

Abstract

The invention discloses a hot steam network steady state simulation method, system and device and a medium. The method comprises the following steps: step 1): establishing a hot steam network steady state simulation model which comprises a pipe section momentum balance equation, a node mass flow balance equation, a pipe section mass flow balance equation and a pipe section energy balance equation; step 2): determining a hot steam network solving condition; step 3), determining a hot steam network solving algorithm; and 4) solving and calculating, and performing result analysis. According to the method, the model is simplified by utilizing piecewise linearization of the saturated steam property, so that the model solving speed is greatly increased while the solving accuracy is ensured; condensed water loss in the hot steam transmission process is accurately considered; and a heat dissipation loss correction coefficient is introduced, so that the accuracy of heat dissipation loss calculation is improved. According to the hot steam network steady-state simulation analysis method provided by the invention, steady-state real-time simulation of the hot steam network with high simulation precision and simulation speed can be realized.

Description

technical field [0001] The invention relates to the technical field of simulation analysis of energy systems, and in particular to a method, system, equipment and medium for steady-state simulation of hot steam networks based on saturated steam density-pressure segmental linear fitting. Background technique [0002] Central heating systems can be divided into hot water heating systems and steam heating systems according to the type of heat medium. The hot water heating system is mainly used for central heating of urban residences and public buildings, while the steam heating system is mainly used for production heat in industrial enterprises because of its large heat supply and fast heat transfer. In recent years, with the rapid development of the global economy, the demand for industrial steam heat continues to grow. For example, in southern China, many cities or regions have formed light industry clusters, and steam heating networks are widely used. [0003] At present, ...

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Problems solved by technology

The temperature, pressure and density of the steam will change during the flow of the heating pipeline, and there will be a large heat loss along the transmission, and there may be a phase change and condensed water, which may even cause the flow and pressure of the hot steam to reach the final heat user. , temperature and other parameters do not meet user needs

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