摘要
提出一种适用于微处理器完成脱扣器保护的算法原理。长延时采用计算电流真有效值 ,累计热效应判别。用窗口实时移动的思想计算当前时刻以前一周波电流方均根值平方作为瞬动脱扣的判断依据。给出了长延时和瞬动二段保护的算法流程。
A proper principle of algorithm for release used by MPU was proposed. Inverse time current protection is judged by calculating the RMS of current and adding up heating effect. Using the method of window moving in real time, the root mean square value of current of the last cycle was calculated as the criteria for instantaneous overcurrent protection. Flow diagrams of algorithm for inverse time current protection and instantaneous over current protection were given as well.
出处
《低压电器》
2002年第2期8-10,共3页
Low Voltage Apparatus
