电流互感器伏安特性测试方法的研究  

Research of Measuring Method for V-A Characteristic of Current Transformer

作　　者：张地生[1] 孔忻[2] 李晗[2] 史轶华[1] 杨栋[2] 吴忠英[2] 邹新峰[1] 

机构地区：[1]西安西电高压开关有限责任公司,西安710018 [2]西安交通大学,西安710049

出　　处：《高压电器》2012年第6期80-84,共5页High Voltage Apparatus

摘　　要：依据电力系统电压等级不断提高的工程背景下,采用变频测量保护用电流互感器伏安特性的方法,为电流互感器的现场检验提供了可能。通过研究铁心磁化过程的功率损耗,进而得出激磁频率与功率损耗的内在关系。针对涡流损耗和额外损耗对测量结果的影响,提出了伏安特性变频测量的损耗补偿方法,即在"频率比折算"的前提下,再进行损耗的补偿修正。研究结果表明,改进后的变频测试方法与直接在工频下测得伏安特性具有较高的一致性。Based on the engineering background of power system voltage level continuous increasing, using the method that test current transformer V-A characteristics by frequency conversion, that offers the possibility for the current transformer＇s site inspection. By studying the power loss during the core magnetization process, then obtains there is the internal relation between excitation frequency and power loss. Give solution to compensate loss during frequency conversion of V-A characteristic, that is, frequency ratio convert as the premise, then compensate the loss of correction. The research results show that, the improved solution of frequency conversion test is more similar to V-A characteristic under test of power.

关 键 词：伏安特性 变频测试 损耗补偿 

分 类 号：TM452[电气工程—电器]