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首页> 外文会议>World conference on earthquake engineering;WCEE >QUALITATIVE ASSESSMENT OF SEISMIC RESPONSE OF INTERNALCOMPONENTS OF POWER TRANSFORMERS
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QUALITATIVE ASSESSMENT OF SEISMIC RESPONSE OF INTERNALCOMPONENTS OF POWER TRANSFORMERS

机译：电力变压器内部组件地震反应的定性评估

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This paper discusses internal packaging of transformers and will identify possible dynamic responsecharacteristics and modes of failure important to their seismic performance. Optimal electricalperformance requires boltless design of core, which consists of sheets of steel laminations. This requires ahigh degree of design sophistication to ensure that adequate structural strength and rigidity are provided.Fault and gravity forces have so far determined the design stresses. The objective of this ongoing study isto determine if seismic forces can have adverse effect on internal packaging that can impact long termperformance of transformers. A challenge to quantifying this is that inspection of internal componentsafter an earthquake is not conducted. However, there has been reportedly unexpected loss of manytransformers in the years following past earthquakes that can be attributed to sustained internal damageduring these events and loss of longevity. The objective of this ongoing analytical study is to determinethe impact of seismic forces on internal components of typical transformer and to qualitatively assess itsimpact on transformer electrical performance. This will also allow better determination of economicjustification of base-isolation, as discusses in a companion paper, as a rehab strategy.
机译：本文讨论了变压器的内部包装，并将确定可能对变压器的抗震性能具有重要影响的动态响应特性和故障模式。最佳的电气性能要求铁芯采用无螺栓设计，该设计由钢板叠层组成。这就要求高度复杂的设计，以确保提供足够的结构强度和刚度。迄今为止，断裂力和重力决定了设计应力。这项正在进行的研究的目的是确定地震力是否会对内部包装产生不利影响，从而影响变压器的长期性能。量化这一点的挑战是地震后不对内部组件进行检查。但是，据报道，在过去的地震之后的几年中，许多变压器出现了意外损失，这可能归因于这些事件的持续内部损坏和寿命的延长。这项正在进行的分析研究的目的是确定地震力对典型变压器内部组件的影响，并定性评估其对变压器电气性能的影响。如配套文件中所述，这还将允许更好地确定基础隔离的经济合理性，作为修复策略。

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