基于多相位原理的长距离短路保护设计

Design on Short-circuit Protection Over Long Distance Based on Multiphase

多相位短路保护是目前性能较为完善的保护技术,其基本理论是用电压与电流、电流与电流相位角检测短路状态。通过对多相位检测原理的分析和现场试验的数据分析计算,设计出符合现场要求的检测电路。此设计是在分析了以往的短路保护检测方法的基础上,综合了各种检测方法的优点和不足而提出的改进方法。

Multiphase short-circuit protection is a relatively thorough protection technology at present. Its basic principle is to detect short-circuit condition by comparing phase angle of voltage and current,current and current. Getting through the analysis of the theory of multiphase,design a detection circuit meeting the requirement of field. The design is a improved method based on the previous detection methods of shortcircuit protection,and combining the advantages and disadvantages of various detection methods.