Numerical Simulation Study on the Elevated Base with Pressure Relief Device in Response to Internal Arc Faults

DENG Jun; XIE Zhicheng; GUAN Qinggang; CHEN Xing; ZHOU Haibin; FU Yao; WANG Ning; HAO Rui; XU Qiang; CHEN Jianyun

doi:10.13296/j.1001-1609.hva.2026.04.009

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Numerical Simulation Study on the Elevated Base with Pressure Relief Device in Response to Internal Arc Faults

Research & Analysis | 更新时间：2026-04-08

- Numerical Simulation Study on the Elevated Base with Pressure Relief Device in Response to Internal Arc Faults
- High Voltage Apparatus Vol. 62, Issue 4, Pages: 82-88(2026)
- 作者机构：
  
  中国南方电网有限责任公司超高压输电公司电力科研院，广州 510663
  沈阳变压器研究院有限公司，沈阳 110000
  大连理工大学工程抗震研究所，辽宁大连 116024
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.04.009
  CLC：
- Received：10 August 2025，
  
  Revised：2025-11-05，
  
  Published：16 April 2026
- 稿件说明：
移动端阅览
DENG Jun, XIE Zhicheng, GUAN Qinggang, et al. Numerical Simulation Study on the Elevated Base with Pressure Relief Device in Response to Internal Arc Faults[J]. High Voltage Apparatus, 2026, 62(4): 82-88.
DOI：

DENG Jun, XIE Zhicheng, GUAN Qinggang, et al. Numerical Simulation Study on the Elevated Base with Pressure Relief Device in Response to Internal Arc Faults[J]. High Voltage Apparatus, 2026, 62(4): 82-88. DOI： 10.13296/j.1001-1609.hva.2026.04.009.

摘要

变压器发生内部电弧放电故障时，如不能有效泄压将导致破坏爆炸，为减少爆炸的隐患和经济损失进行了变压器加装泄压装置数值模拟研究。在变压器升高座模型上，加装了压力释放阀的泄压装置，同时设置了未加装压力释放阀的升高座模型作为对照组，对比分析了泄压装置对变压器升高座抗爆的影响。运用Autodyn软件建立了变压器升高座CEL多物质流固耦合模型，进行爆炸模拟和动力结果分析，得到变压器爆炸动态响应的变形云图和应力云图，通过与试验结果的对比，验证了所建耦合模型的可靠性。在此基础上，通过在变压器升高座内壁上布置测点，得到爆炸动态响应的压强曲线和应力曲线，掌握了内爆过程中封闭装置内壁超压分布情况，进一步揭示内爆规律。结果表明：与未设置泄压装置的仿真结果进行对比分析，增加压力释放阀泄压装置能够安全、可靠的预防变压器超压爆裂损坏，研究结果有助于变压器防爆装置的合理优化设计，避免变压器油箱内部电弧放电真实尺寸模拟试验的复杂性与危险性。

Abstract

In case of internal arc discharge in the transformer

if the pressure can not be effectively released

it will lead to destructive explosition.Therefore

a numerical simulation study on installing pressure relief devices to transformers is conducted to reduce explosion risk and economic losses.A pressure relief device with pressure relief valve is installed on the elevated base model of transformer and

at the same time

the elevated base model without installing pressure relief valve is set as the control group. The influence of pressure relief device on the anti-explosion of transformer elevated base is compared and analyzed. The Autodyn software is used to set up the CEL multi-material fluid-solid coupling model of the transformer elevated base for explosion simulation and dynamic result analysis. The deformation cloud diagram and stress cloud diagram of the explosion dynamic response of transformer are obtained. By comparing with the test results

the reliability of the coupling model is verified through comparison with the test results. On this basis

the pressure curve and stress curve of the explosion dynamic response are obtained by arranging the measuring points on the inner wall of the elevated bushing of transformer. The overpressure distribution on the inner wall of the closed device during the implosion process is mastered

and the implosion pattern is revealed further. The results show that compared with the simulation results without setting pressure relief device

installation of pressure relief device with pressure relief valve can safely and reliably prevent overpressure burst damage of transformer. The study results are helpful to the reasonable optimization design of explosion-proof device of transformer and avoid the complexity and danger of the real size simulation test of the arc discharge inside the transformer tank.

关键词

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