电力系统及其自动化学报2017，Vol.29Issue(8)：36-42,7.DOI:10.3969/j.issn.1003-8930.2017.08.006
利用剩余电压法诊断变压器绝缘状态
Insulation Condition of Transformer Diagnosed by Using Residual Voltage Method
摘要
Abstract
It is known that electrical diagnosis method based on time domain dielectric response theory is a nondestruc-tive testing method.In this paper,residual voltage curves are used to diagnose the insulation condition of transformer based on extended Debye model equivalent circuit and time domain dielectric response theory. Considering that the re-sidual voltage curves under different insulation conditions are different,it is suggested that several characteristics can be used to reflect the aging insulation conditions of transformers,i.e.,half-life,surplus energy and initial slope. Based on the study on the residual voltage curves from multiple sets of transformer,it is found that half-life and surplus energy will decrease with the deterioration of insulation condition,while the initial slope will increase.Therefore,the above characteristics can be used as references to diagnose the insulation condition of transformers .关键词
油纸绝缘/介质响应/扩展德拜模型/剩余电压/半衰期Key words
oil-paper insulation/dielectric response/extended Debye model/residual voltage/half-life分类
信息技术与安全科学引用本文复制引用
蔡锋,江修波,蔡金锭..利用剩余电压法诊断变压器绝缘状态[J].电力系统及其自动化学报,2017,29(8):36-42,7.基金项目
国家自然科学基金资助项目(61174117) （61174117）
