解析TA特性与其二次回路通流试验的关系  

Analysis on Relation of TA Characteristic and Its Current Injecting Test

作　　者：占金涛[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《华北电力技术》2005年第8期42-46,50,共6页North China Electric Power

摘　　要：TA二次回路设计的合理性与安装质量的好坏直接会影响到电力系统保护动作的可靠性及测量元件的准确度,因此必须对TA二次回路进行完整的试验。目前在现场试验中对电流回路进行通流试验是最有效和最必要的回路检查方法,因为它不仅可以测量二次回路阻抗,而且也复查了二次回路的完整性。为此详细分析二次回路通流检查试验与TA的特性参数之间的关系,以提高对回路通流试验重要性的认识。The designed rationality and installed quality of TA secondary circuits will influence directly the acting reliability of electric power system protection equipments and the accuracy of measurement, then the complete test of TA secondary circuits must be made. At present,the current injecting test of TA circuit is most effective and most necessary check method. These tests can not only measure the impedance of secondary circuits, but also check the integrity of secondary circuits. This paper analyzes in detail the relation between secondary circuit current check test and characteristic parameters to deepen the understanding to the importance of current injecting test of circuits.

关 键 词：TA 二次回路 10%误差曲线 伏安特性 回路通流 阻抗 

分 类 号：TM452[电气工程—电器]