电工技术学报2012，Vol.27Issue(5)：13-20,8.
基于云理论的电力变压器绝缘状态评估方法
An Assessment Method for Insulation Condition of Power Transformer Based upon Cloud Model
张镱议 1廖瑞金 1杨丽君 1郑含博 1孙才新1
作者信息
- 1. 重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030
- 折叠
摘要
Abstract
Failure mechanisms of fuzzy membership function is subjective power transformers are complex, and fails to take randomness into and the determination of account. Beside, dissolved gas analysis （DGA） alone does not provide sufficient information to predict potential failures of a transformer. Aiming at these problems, an assessing model of transformer insulation is proposed base upon fuzzy cloud theory. Based on the determination of variable index weights, insulation condition system was established and insulation grade was classified. The cloud model was used to describe the fuzziness and randomness of the transformer and assess the condition of transformer insulation combined with infrared thermal imaging method and DGA method. Case studies and comparison analyses with other assessing method show that fuzzy cloud model analysis method is feasible and effective, and the method also offers a new way of assessment for transformer insulation condition.关键词
电力变压器/状态评估/状态检修/云模型/隶属云函数/变权Key words
Power transformer/condition assessment/condition maintenance/cloud model/cloudmembership function/variable weight分类
信息技术与安全科学引用本文复制引用
张镱议,廖瑞金,杨丽君,郑含博,孙才新..基于云理论的电力变压器绝缘状态评估方法[J].电工技术学报,2012,27(5):13-20,8.
