重庆电力高等专科学校学报
重慶電力高等專科學校學報
중경전력고등전과학교학보
Journal of Chongqing Electric Power College
2015年
5期
28-32,37
,共6页
袁波%席世友%李学伟%杨庭志%徐章亮
袁波%席世友%李學偉%楊庭誌%徐章亮
원파%석세우%리학위%양정지%서장량
绝缘线%鼓包%交联聚乙烯%降解%热稳定
絕緣線%鼓包%交聯聚乙烯%降解%熱穩定
절연선%고포%교련취을희%강해%열은정
overhead insulated wire%bulge%cross-linked polyethylene%decomposition%thermal stability
针对全线架空绝缘线发生的鼓包、散股、燃烧现象,分析绝缘线内部气体的来源,并应用架空线路的热平衡方程式,结合CIGRE标准对其进行理论推理验证,证明了是由于电流发热,交联聚乙烯高温下分解气体,气体膨胀于瞬间迸发而产生上述现象.最后提出了防止类似事故发生的措施与建议.
針對全線架空絕緣線髮生的鼓包、散股、燃燒現象,分析絕緣線內部氣體的來源,併應用架空線路的熱平衡方程式,結閤CIGRE標準對其進行理論推理驗證,證明瞭是由于電流髮熱,交聯聚乙烯高溫下分解氣體,氣體膨脹于瞬間迸髮而產生上述現象.最後提齣瞭防止類似事故髮生的措施與建議.
침대전선가공절연선발생적고포、산고、연소현상,분석절연선내부기체적래원,병응용가공선로적열평형방정식,결합CIGRE표준대기진행이론추리험증,증명료시유우전류발열,교련취을희고온하분해기체,기체팽창우순간병발이산생상술현상.최후제출료방지유사사고발생적조시여건의.
In order to solve the problems of the overhead insulated wire such as bulges,scattering of strands and combustion, this article analyzes the source of the internal gas of the insulated wire based on the thermal balance equation of the overhead lineThrough relevant theoretical reasoning verification by means of the CIGRE standards,it proves that the above problems can be attributed to the sudden gas expansion due to the decomposition of cross-linked polyethylene under high temperature caused by the heat emission of electric current.Finally,it presents relevant preventive measures for similar accidents.
