变压器油枕胶囊破裂修复方案探索

Research on Repair Method for Transformer Conservator Capsule Rupture

在电力企业中,大容量的油浸式电力变压器大多采用胶囊式油枕,胶囊式油枕在油浸式电力变压器中起到补偿变压器绝缘油油位变化的作用,在防止变压器绝缘油老化方面起到了很关键的作用.但变压器绝缘油具有极强的腐蚀性,随着变压器的长时间运行,胶囊与绝缘油接触面逐渐老化,在变压器运行中会突发油枕胶囊破裂或裂纹事件,从而造成绝缘进入胶囊内部,导致油位计无法显示甚至损坏,且变压器绝缘油通过破损胶囊直接与空气接触,会加速变压器绝缘油劣化,影响变压器的安全运行.本文简单介绍了一种胶囊破损的临时修复方案,可以确保主变在极短时间内恢复正常运行.

In power enterprises,capsule type oil conservator is mostly used in large capacity oil immersed power transformer.Capsule type oil conservator plays a role in compensating the oil level change of transformer insulation oil in oil immersed power transformer,and also plays a key role in preventing transformer insulation oil aging.However,the insulation oil of transformer is extremely corrosive,with the long-term operation of transformer,the contact surface between the capsule and the insulation oil gradually ages.During the operation of the transformer,the rupture or crack of the oil conservator capsule might occur,resulting in the insulation oil entering into the capsule,causing the oil level gauge unable to work or even damaged.Moreover,the insulation oil of the transformer directly contacts with the air through the damaged capsule,it will accelerate the deterioration of transformer insulation oil and affect the safe operation of transformer.This paper briefly introduces a temporary repair scheme for damaged capsule,which can ensure the normal operation of main transformer in a very short time.