断路器瞬动特性检测技术的研究

Study on Technique of Circuit Breaker's Behaviors of Instantaneous Release

介绍了断路器瞬动特性的检测技术。为了产生不同等级试验电流 ,采用改变变压器变比与电动调压相结合的方法 ,为了消除暂态电流 ,保证检测精度 ,阐述了一种基于快速傅立叶变换 (FFT)的交流选相合闸技术的原理以及实现方法 ,最后介绍了计算机控制的断路器瞬动特性检测设备。

This paper introduced the technology of testing instantaneous characteristics for circuit breaker.The combining of changing the transformer's ratio and power regulating voltage is used to yield various levels of testing current.In order to ensure the test precision and avoid transient current,the principle and the method of phase selection of the AC based on FFT(Fast Fourier Transform Algorithm)are described.The test equipment of circuit breaker's instantaneous characteristics controlled by computer is introduced in the end.