换流变压器试验及局放干扰抑制措施  

Study on ACLD Test of Converter Transformer and Suppression of Interference Suppression

作　　者：宋作森 刘东[1] 钱国超[1] 楚金伟[1] 

机构地区：[1]中国南方电网超高压输电公司检修试验中心,广州510663

出　　处：《云南电力技术》2015年第6期29-31,共3页Yunnan Electric Power

摘　　要：换流变压器因其电磁结构和绝缘设计的复杂性,其内部绝缘易存在薄弱点。为了全面了解和掌握绝缘薄弱点放电情况,换流变压器现场长时感应电压及局放测量(ACLD)试验是一项重要的测试方法。本文结合现场试验设备条件,给出换流变压器单边和双边加压的总体接线方案;为了避免试验过程中换流变铁心发生饱合,对试验电源频率选择进行分析;为了解决两端加压不平衡问题,提出相应的补偿方案,并通过仿真验证了补偿的可行性;此外针对现场局放测试干扰源类型的不同,提出了相应的抗干扰措施,以保证测量结果的精度。the internal insulation of the converter transformer is vulnerable to the complexity of its electromagnetic structure and in- sulation design. In order to fully understand and master the insulation weak point discharge, the voltage and PD measurement （ACLD） test is an important method for the transformer field. Based on field test equipment, and according to the different ratio of the proposed converter transformer ACLD test unilateral and bilateral compression scheme and test wiring scheme, to solve the prob- lem of iron core magnetic saturation increase test power supply frequency and to resolve bilateral pressure imbalance in the proposed one kind of effective compensation scheme, and simulation verify the feasibility; in addition to local discharge test interference source types of different proposed corresponding anti-interference measures, to ensure the accuracy of the measurement results.

关 键 词：换流变压器 接线方案 双边加压 干扰源 抑制措施 

分 类 号：TM406[电气工程—电器] TM721.1