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Transformer substation main transformer earthquake risk assessment method and system

A technology of main transformer and risk, which is applied in the field of earthquake risk assessment of substation main transformer, can solve the lack of assessment of the possibility of main transformer being damaged by earthquakes, and achieve the effect of accurately evaluating the seismic damage resistance and risk

Pending Publication Date: 2019-07-12
STATE GRID SHANDONG ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of the lack of assessment of the possibility of earthquake damage to the main transformer in the prior art, the present invention provides a method and system for assessing the earthquake risk of the main transformer of a substation

Method used

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  • Transformer substation main transformer earthquake risk assessment method and system
  • Transformer substation main transformer earthquake risk assessment method and system
  • Transformer substation main transformer earthquake risk assessment method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] S1: Based on the pre-established earthquake loss index system, conduct experiments on the main transformer to be evaluated under different earthquake intensities and according to different performance requirements:

[0051]The main transformers of high-voltage substations have common characteristics in structure, and are composed of main body oil tanks, windings, external bushings, external fan heating devices, external oil conservator and key components of measurement and control devices. The types of earthquake damage under the action of earthquake reciprocating inertial force can be summarized as follows: overall overturning, component damage, and seal failure, which can be specifically divided into:

[0052] The overturning of the main transformer body refers to the overturning of the main transformer under the joint action of horizontal and vertical seismic forces when the main transformer body and the foundation are not firmly fixed, including toppling and obvious ...

Embodiment 2

[0085] Based on the same inventive idea, the present invention also provides a substation main transformer earthquake risk assessment system, including:

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Abstract

The invention discloses a transformer substation main transformer earthquake risk assessment method and system, and the method comprises the steps: carrying out the experiment of a to-be-assessed maintransformer under different earthquake intensities based on a preset earthquake loss index system according to different performance level requirements; judging the obtained experimental result and safety critical values under different earthquake intensity and performance level requirements to obtain a vulnerable probability; and evaluating the risk of the main transformer based on the vulnerability probability. According to the method, the anti-seismic level is divided into three indexes, the range of each anti-seismic performance index corresponding to each index is provided, and comprehensive and accurate risk assessment is carried out on multiple components of the main transformer in an earthquake prone area.

Description

technical field [0001] The invention relates to the field of substation design, in particular to a method and system for assessing the earthquake risk of a main transformer of a substation. Background technique [0002] For earthquakes, especially in earthquake-prone areas, the power system is seriously damaged by earthquakes. Under the background that modern life has been highly electrified, electrification in disaster-stricken areas after the earthquake has become the most urgent need after access. The main transformer is the key equipment for electric energy conversion in the power grid system. It is divided into boost, step-down and converter types. This type of equipment is responsible for the structure and involves many components. damage. Due to the complex structure and strict test requirements of the transformer, it is difficult to repair the substation damaged by the earthquake at the substation site. In high-voltage substations, the main transformer equipment i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 程永锋李圣卢智成朱祝兵刘振林钟珉刘海龙王海波张谦林森孙宇晗朱照清韩嵘刘志清
Owner STATE GRID SHANDONG ELECTRIC POWER
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