变压器差动保护二次谐波制动判据的仿真研究  

The simulation of the scheme of second harmonic restraint for power transformer

作　　者：吕珍[1] 岳蔚[1] 刘沛[1] 

机构地区：[1]华中科技大学电力工程系,湖北武汉430074

出　　处：《继电器》2003年第6期69-72,84,共5页Relay

摘　　要：利用二次谐波制动原理防止励磁涌流造成差动保护误动作是目前最普遍应用的方法。通过建立合理的变压器模型,在不同的运行情况下对现行的各种二次谐波制动判据进行仿真,比较,得出了一些有益的结论。To avoid differential protection mal - operation's of a power transformer due to inrush currents, the scheme of second harmonic restraint is widely used. In this paper, the reasonable transformer model is established, some harmonic restraint criteria are emulated and compared for different situations, then some useful conclusions are given.

关 键 词：变压器 差动保护 二次谐波制动原理 仿真 励磁涌流 电力系统 

分 类 号：TM41[电气工程—电器]