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Simplified modeling simulation method for complex roof grid structure of bridge arm reactor chamber

A reactor room and grid structure technology, applied in design optimization/simulation, geometric CAD, calculation, etc., can solve the problems of over-dense division, difficult modeling, complex structure, etc.

Pending Publication Date: 2022-05-27
CENT SOUTHERN CHINA ELECTRIC POWER DESIGN INST CHINA POWER ENG CONSULTING GROUP CORP +2
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Problems solved by technology

However, the actual steel structure, such as the roof grid of the converter station, has a complex structure and is difficult to model, and the finite element mesh division after modeling tends to be too dense and consume too much computing resources to calculate

Method used

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  • Simplified modeling simulation method for complex roof grid structure of bridge arm reactor chamber
  • Simplified modeling simulation method for complex roof grid structure of bridge arm reactor chamber
  • Simplified modeling simulation method for complex roof grid structure of bridge arm reactor chamber

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Embodiment Construction

[0022] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0023] A simplified modeling and simulation method for a complex roof grid structure of a bridge arm reactor room, comprising the following steps:

[0024] A) According to the structural drawings of the roof grid, a pyramid grid unit model is established in the finite element software. The pyramid grid unit model is a parametric three-dimensional model, including parametric grid rods 1 and welding balls 2. The grid Rod 1 includes transverse rods and longitudinal rods. Since the grids at different positions in the drawings use grids with different models of rods 1 and sizes of welding balls 2, the control parameters of the pyramid grid unit model include grids. The inner and outer diameters of rod 1, the inner and outer diameters of welded ball 2, the lengths of transverse rods and longitudinal rods, such as figure 1 As shown, use Comsol Mu...

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Abstract

The invention relates to the technical field of finite element simulation modeling in reliability verification of electrical equipment, and discloses a simplified modeling and simulation method for a complex roof grid structure of a bridge arm reactor room, which comprises the following steps of: establishing a pyramid grid unit model in finite element software; performing array operation to obtain a local net rack model, placing the local net rack model above a single bridge arm reactor, applying excitation current to the bridge arm reactor, performing heating simulation rule research on a local steel structure in finite element software, and simplifying a pyramid net rack unit model; and selecting a pyramid net rack unit model capable of reflecting the maximum temperature rise to perform array or rotation operation, and establishing an overall model. According to the simplified modeling simulation method for the complex roof grid structure of the bridge arm reactor chamber, the research on the local heating law and the simplification of the whole model are carried out on the grid structure, the grid number of the whole grid model is reduced to an acceptable range, and reference value is provided for actual engineering.

Description

technical field [0001] The invention relates to the technical field of finite element simulation modeling in reliability verification of electrical equipment, in particular to a simplified modeling and simulation method for a complex roof grid structure of a bridge arm reactor room. Background technique [0002] As a new generation of DC transmission technology, flexible DC transmission is different from the current source converter type HVDC transmission based on phase-controlled commutation technology. The converter in flexible DC transmission is a voltage source converter (VSC), and its largest It is characterized by the use of turn-off devices (usually IGBTs) and high-frequency modulation techniques. By adjusting the amplitude of the converter outlet voltage and the power angle difference with the system voltage, the output active power and reactive power can be independently controlled. In this way, through the control of the converter stations at both ends, the mutual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/10G06F119/08
CPCG06F30/23G06F30/10G06F2119/08Y02E60/60
Inventor 陈鹏周国梁马亮梁言桥胡德芳庄清寒戴显康雷肖杨张斌彭代晓陈晨杨金根尚宇星文韬戚乐
Owner CENT SOUTHERN CHINA ELECTRIC POWER DESIGN INST CHINA POWER ENG CONSULTING GROUP CORP
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