描述
怎樣對變壓器進行特殊巡視?
當系統(tǒng)發(fā)生短路故障或天氣突變時,值班人員應(yīng)對變壓器及其附屬設(shè)備進行特殊巡視。下雪天氣,應(yīng)檢查變壓器引線接頭部分有無落雪立即融化或蒸發(fā)冒氣現(xiàn)象,導(dǎo)電部分有無積雪、冰柱。氣溫驟變時,應(yīng)檢查變壓器的油位和油溫是否正常,伸縮節(jié)導(dǎo)線和接頭有無變形或發(fā)熱現(xiàn)象。雷雨天氣,應(yīng)檢查瓷套管有無放電閃絡(luò)現(xiàn)象(大霧天氣也應(yīng)進行此項檢查),以及避雷器放電記錄器的動作情況。大風天氣,應(yīng)檢查引線擺動情況和是否搭掛雜物。
當系統(tǒng)發(fā)生短路故障時,應(yīng)立即檢查變壓器系統(tǒng)有無爆裂、斷脫、移位、變形、焦味、燒損、閃絡(luò)、煙火和噴油等現(xiàn)象。下雪天氣,應(yīng)檢查變壓器引線接頭部分有無落雪立即融化或蒸發(fā)冒氣現(xiàn)象,導(dǎo)電部分有無積雪、冰柱。
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