曲线拟合法在反时限过流继电器中的应用

Application of curve-fitting for inverse time overcurrent relays

对通用的三种标准反时限特性曲线的数学模型进行了分析,提出了一种用曲线拟合的算法,根据拟合结果研制成的微机线路保护装置,经测试:继电器的动作特性较好,具有较高的工程实用价值。

This paper analyzes in detail the models of three inverse time over-current curves and presents a algorithm by curve-fitting. The protection has been finished by the algorithm based on Motorola 32-bits Microprocessor. It has been tested that the relay has better characteristic and better practicality worth in engineering.