自适应电流速断保护分析

Analysis of adaptive instantaneous trip current protection

介绍了自适应电流速断保护的原理,短路故障类型的识别方法,系统阻抗的在线实时计算方法,电流突变量的提取方法及自适应电流速断保护的保护范围.自适应电流速断保护区大于常规电流速断保护区,是一种电流速断保护区始终处于最佳状态的保护措施.

Introducing the principle of adaptive instantaneous trip current protection, the discrimination method of short circuit fault type, the real time and on-line calculation method of system impedance, the calculation method of jump-value of current and the protection area of adaptive instantaneous trip current protection respectively. The protection area of adaptive instantaneous trip current protection is larger than that of traditional instantaneous trip current protection. Adaptive instantaneous trip current protection is a protection precaution with which the protection area of instantaneous trip current protection always keeps in optimal state.