普洱换流站换流变压器检修试验厂房电磁屏蔽研究

摘要

The Converter Transformer Repair and Test Plant at Pu'er converter station of Nuozhadu UHVDC project, CSG, is located in a area of the station’s AC field, and thus there are serious problems of electromagnetic interference to the plant operation such as measuring the partial discharge of converter transformer. To fulfill the requirements of the plant, and according to the existing standards, this paper proposes the electromagnetic interference limits for the plant, and suggests its shielding requirement based on strength analysis of the station’s radio electric field and AC power frequency magnetic field in the plant area.%　　南方电网糯扎渡特高压直流工程普洱换流站换流变压器检修试验厂房位于换流站交流场区域，在直流系统运行时厂房区域存在较大的电磁干扰问题，将严重影响在厂房内开展的换流变压器局放测量。为了满足检修试验厂房的功能要求，基于现有标准提出了检修厂房内部电磁干扰限值要求，在分析换流站内辐射电场和工频磁场在检修试验厂房区域的强度基础上提出了检修试验厂房应具备的屏蔽效能。