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Single-phase fluid network modeling method

A single-phase fluid network and modeling method technology, applied in the field of real-time simulation of power plants, can solve the problem that the fluid network simulation model cannot accurately reflect the actual operation of the fluid network in real time and so on.

Active Publication Date: 2016-02-03
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

[0010] Based on this, it is necessary to provide a single-phase fluid network modeling method for the technical problem that the fluid network simulation model obtained according to the existing fluid network modeling method cannot accurately reflect the actual operation of the fluid network in real time

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[0021] In order to further illustrate the technical means adopted by the present invention and the achieved effects, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments.

[0022] Such as figure 1 as shown, figure 1 It is a flowchart of a single-phase fluid network modeling method according to an embodiment of the present invention.

[0023] A single-phase fluid network modeling method may include the following steps:

[0024] Step S101: Establish a branch model of the single-phase fluid network according to the characteristics of the single-phase fluid;

[0025] Step S102: according to the mass conservation law of the nodes of the single-phase fluid network, establish a node model of the single-phase fluid network;

[0026] Step S103: According to the branch model of the single-phase fluid network, establish the node pressure equation of the single-phase fluid...

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Abstract

The invention relates to a single-phase fluid network modeling method. The method comprises the following steps: according to single-phase fluid characteristics, establishing a branch model of a single-phase fluid network; according to a mass conservation law of a single-phase fluid network node, establishing a node model of the single-phase fluid network; according to the branch model of the single-phase fluid network, establishing a node pressure equation of the single-phase fluid network; solving the node pressure equation by adopting an improved Gaussian elimination method and a Gauss-Seidel iteration mixed algorithm, and calculating the pressure of the single-phase fluid network node; according to the branch model and the pressure of the single-phase fluid network node, calculating the flow of each branch; and according to the pressure of the single-phase fluid network node and the flow of each branch, establishing a mathematic model of the single-phase fluid network. The mathematic model of the single-phase fluid network, obtained with the single-phase fluid modeling method, can reflect a practical operational condition of the single-phase fluid network accurately in real time.

Description

technical field [0001] The invention relates to the technical field of power station real-time simulation, in particular to a single-phase fluid network modeling method. Background technique [0002] A large-scale thermal power generation unit is a complex large system, including a large number of thermal equipment, which are connected by pipelines, and different working fluids, such as water, steam, lubricating oil, etc., flow in these pipelines in different phases with. A huge heat pipe network is composed of many pipes connecting different heat equipment and systems, and the working medium flowing in the pipes constitutes a fluid network. Specifically, the fluid network refers to a fluid network composed of resistance elements (such as valves), dynamic elements (such as fans), inertial points, material sources, and material trap points, which can be abstracted into two parts: nodes and branches, where , make the following definition: [0003] 1) Branch: a channel throu...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 陈世和张曦罗嘉潘凤萍朱亚清余圣方吴乐史玲玲庞志强任娟娟欧阳春明胡康涛
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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