李家峡变电所2#主变铁芯多点接地故障诊断与处理

Diagnosis and Treatment of Iron Core Multipoint Earth Fault of Lijiaxia Substation's 2# Main Transformer

文章根据李家峡变电所 2 # 主变压器历次色谱分析数据 ,经过计算分析 ,并与电气试验结论作综合比较 ,阐述了主变压器过热的原因是由变压器铁芯多点接地引起得局部过热性故障 ,及时采取限制铁芯接地电流的过渡性处理措施 ,抑制了过热性故障的发展 ,保证了主变压器的安全。

According to the previous chromatogram data analysis of Lijiaxia substation's 2 # main transformer, the paper makes a calculation and analysis and compares to the electric experiment's conclusion, and diagnoses the reason of the main transformer overheated fault is the transformer's core multipoint, and this leads to the overheat fault of some parts. The paper also proposes the measurement to settle this problem and ensure the main transformer's safe operation.