CT saturation recognition method based on dynamic fuzzy recognition

The invention discloses a CT saturation recognition method based on dynamic fuzzy recognition. The method comprises the following steps: firstly, accurately judging the starting moment of CT saturation in starting judgment; introducing a CT saturation criterion, calculating respective weight values by using a transient-stable asynchronous recognition principle and a waveform sunken harmonic recognition principle respectively, performing voting according to the weight values to judge whether CT is saturated or not, and meanwhile, realizing quick response unlocking by using various unlocking criteria in combination with different working conditions. The method is simple, reliable, good in effect and capable of guaranteeing reliable action of the bus protection device. 本发明公开了一种基于动态模糊识别的CT饱和识别方法，首先是在启动判断中准确的判断出CT饱和的起始时刻，引入CT饱和判据，分别使用暂稳态异步识别原理和波形凹陷谐波识别原理计算各自的权重值，根据权重值进行表决，判断CT是否饱和，同时还结合不同的工况，使用多种解锁判据，实现快速响应解锁。本方法简单可靠，效果良好，可保证母线保护装置可靠地动作。