一起110 kV变压器绕组变形故障诊断分析

Fault Diagnosis and Analysis of 110 kV Transformer Winding Deformation

针对一起110kV变压器近区短路故障,通过绕组频率响应等多种试验方法对变压器进行综合诊断分析,结果显示,变压器35kV侧绕组遭受冲击导致绕组变形,并吊罩解体检查得到验证。通过诊断性试验,有效避免了1次变压器潜伏性故障的发生,为相关变压器状态检修维护提供一定参考。

Aiming at a 110 kV transformer near-field short-circuit fault,it comprehensively diagnoses and analyzes the transformer through various test methods such as winding frequency response.The result shows that the winding of transformer 35 kV side suffers shock, which causes winding deformation.The conclusion is verified by disintegration inspection.Through diagnosis testing,the occurrence of a transformer latent fault is effectively avoided, and it supports suggestions for transformer state maintenance.