关于±1100 kV换流变压器现场故障检修及试验探讨

Field Failure Overhaul and Test of ±1100 kV Converter Transformer

随着换流变电压等级的增加,换流变压器的体积和质量也不断增大,现场检修及试验已成为一种趋势。论文就±1 100k V低端换流变压器为例,对特高压换流变压器的现场故障进行了分类,并针对不同的故障类型提出了相应的处理措施,制定了检修后的试验方案。通过与传统的返厂维修进行了对比,对其经济性和可行性进行了验证,为后续±1 100k V高低端换流变压器的现场工程应用提供了参考依据。

With the increase of commutation voltage level, the volume and weight of converter transformer are also increasing, and on-site maintenance and test has become a trend. Taking ＋1 lOOkV low-end converter transformer as an example, paper classifies the field failure of UHV converter transformer, and puts forward corresponding measures for different fault types, and makes the test plan after the maintenance. Compared with the traditional back repair, the feasibility and economy of the converter are verified, which provides a reference for the field engineering application ofthe ±1 100kV high and low end converter transformer.