高电压技术2011，Vol.37Issue(5)：1100-1105,6.
电力变压器油纸绝缘可靠性与老化特征参量间的相关性
Relationship Between Power Transformer Oil-paper Insulation Reliability and Aging Characteristic Parameters
摘要
Abstract
Studying the relationship between the oil-paper insulation reliability of transformer and aging characteristics parameters can help accurately determine the reliability level of power transformer, and can help ensure the safe and stable operation of power transformer. We designed and carried out oil-paper insulation reliability tests, and employed the maximum likelihood parameter estimation method to calculate the parameters of Weibull distribution model. Moreover, we provided the linear fitting curves between various characteristic parameters values and oil-paper insulation reliability under different life stages. The results of reliability test show that the degree of polymerization, furfural content, oil breakdown voltage, and total hydrocarbon content can reflect the oil-paper insulation reliability level very well, providing a technical support for the characteristic parameter determination of the transformer reliability assessment.关键词
变压器/油纸绝缘/可靠性试验/老化/特征参量/线性拟合Key words
transformers/ oil-paper insulation/ reliability test/ aging/ characteristic parameters/ linear fitting分类
信息技术与安全科学引用本文复制引用
王有元,龚森廉,廖瑞金,李剑,何志满..电力变压器油纸绝缘可靠性与老化特征参量间的相关性[J].高电压技术,2011,37(5):1100-1105,6.基金项目
国家重点基础研究发展计划(973计划)(2009CB724505) （973计划）
国家自然科学基金(51077136). （51077136）
