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电力变压器油箱内部故障压力特征建模及仿真

DOI: 10.13334/j.0258-8013.pcsee.2014.01.021, PP. 179-185

Keywords: 油浸式电力变压器,内部故障,电弧能量,压力震源,压力波传播,有限元仿真

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Abstract:

鉴于变压器内部故障后压力升高可能导致油箱开裂、起火及爆炸等事故,长期以来,电力变压器一般装有瓦斯继电器和压力释放阀用于故障切除及油箱过压力释放。但由于业界对其深入研究不足,且鲜有理论创新和性能改进,目前广泛使用的瓦斯继电器存在速动性不足、可靠性较低及阈值难以整定等缺陷。

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