Calculation Method of Temperature and Humidity Distribution of Three-Dimensional Switchgear Based on Electromagnetic-Temperature-Humidity Coupling

A distributed computing, temperature and humidity technology, applied in computing, computer-aided design, electrical and digital data processing, etc., can solve problems such as the inability to accurately and clearly grasp switch cabinets, achieve great application value, guide design and operation and maintenance, and real-time monitoring The effect of temperature and humidity distribution

Active Publication Date: 2019-03-22
STATE GRID CORP OF CHINA +3
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AI Technical Summary

Problems solved by technology

At present, most of the calculations of the temperature and humidity distribution inside the switchgear use two-dimensional simple models, which cannot accurately and clearly grasp the temperature and humidity distribution inside the switchgear. Factors to guide the optimal design of anti-condensation in the switchgear

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  • Calculation Method of Temperature and Humidity Distribution of Three-Dimensional Switchgear Based on Electromagnetic-Temperature-Humidity Coupling
  • Calculation Method of Temperature and Humidity Distribution of Three-Dimensional Switchgear Based on Electromagnetic-Temperature-Humidity Coupling
  • Calculation Method of Temperature and Humidity Distribution of Three-Dimensional Switchgear Based on Electromagnetic-Temperature-Humidity Coupling

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Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0043] Such as figure 1 As shown, the present invention provides a three-dimensional switch cabinet temperature and humidity distribution calculation method based on electromagnetic-temperature-humidity coupling, including the establishment of a three-dimensional calculation model, electromagnetic-temperature field coupling and temperature-humidity field coupling.

[0044] 1. The establishment of a three-dimensional calculation model includes the following steps:

[0045] The switchgear is composed of multiple compartments, mainly including busbar room, cable room, instrument room, circuit breaker room, etc. These compartments also include multiple components, such as isolating switches, current transformers, and lightning arresters. In the simulation calculation, the calculation efficiency is negatively correlated with the size of the model....

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Abstract

The invention discloses a Calculation Method of Temperature and Humidity Distribution of Three-Dimensional Switchgear Based on Electromagnetic-Temperature-Humidity Coupling. The method comprises the following of construction of the three-dimensional computational model include adopting simplified switch cabinet structure and using structured mesh generation to improve the accuracy and efficiency of computation; (2) Electromagnetism is considered in the calculation The temperature distribution inside the switchgear caused by the Joule heat is calculated by using the large current flowing through the conductor, which is consistent with the actual operating condition of the switchgear. (3) Temperature is taken into account in the calculation In the coupled process of humidity field, the influence of humid air diffusion is considered in the calculation of temperature distribution. In the humidity calculation, the influence of temperature distribution is also considered. The calculation result of the invention can display the temperature and humidity distribution inside the switch cabinet in real time, and can provide guidance for the optimization design of the switch cabinet.

Description

technical field [0001] The invention belongs to the technical field of diagnosis and evaluation of the insulation state of electric equipment, and in particular relates to a three-dimensional switch cabinet temperature and humidity distribution calculation method based on electromagnetic-temperature and humidity coupling. Background technique [0002] With the rapid development of my country's power system, high-voltage switchgear is widely used in the power system distribution network due to its advantages of compact structure and small footprint. At present, the high-voltage switchgear tends to be miniaturized gradually, and the occupied area is greatly reduced. The distance between the metal conductors and the distance between the metal conductors and the ground electrode is also reduced. At this time, the humidity distribution of the environment inside and outside the switchgear must be strictly controlled. Once the moisture diffuses into the switch cabinet, its miniatur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2119/08G06F30/20Y02E60/00
Inventor 任双赞吴经锋刘晶杨传凯刘伟师一卿李元吴昊李文慧郝东新雷琅
Owner STATE GRID CORP OF CHINA
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