计及Scott牵引变压器的短路计算方法研究  

Research of short circuit calculation method considering Scott traction transformer

作　　者：侯瑞鹏[1] 张永浩 周庆捷 杨明玉[1] 

机构地区：[1]华北电力大学电力系统保护与动态安全监控教育部重点实验室,河北保定071003 [2]北京中恒博瑞数字电力科技有限公司,北京100096

出　　处：《电工电能新技术》2013年第4期102-105,共4页Advanced Technology of Electrical Engineering and Energy

摘　　要：根据Scott接线牵引变压器原、副边电压电流关系,采用相序变换技术,推导出用于故障计算的Scott接线牵引变压器序网通用模型。在Scott接线牵引变压器侧发生不同的短路故障时,应用通用模型计算各序电流分量,进而导出三相系统中的各相电流。最后应用相分量法验证该方法的实用性和准确性。为基于对称分量法计及Scott接线牵引变压器短路计算的计算机算法提供理论依据。According to the voltage and current relationship of Scott transformer＇ s primary and secondary, this pa per uses phase sequence transformation technique to derive the Netcom model of Scott transformer in traction power supply system for fault calculation. Taking different kinds of short circuit at Scott transformer in traction power sup ply system, the paper uses the Netcom model to calculate each sequence current component and then to derive the phase current of threephase current. The paper uses phase component method to verify the practicality of the meth od at last. The paper provides theoretical basis for computer algorithms of fault calculation which is based on sym metrical component by taking Scott transformer into account.

关 键 词：对称分量法 相分量法 Scott接线 相序变换 短路计算 

分 类 号：TM1[电气工程—电工理论与新技术]