基于C8051F330D的三相供电系统智能保护设计

Intelligent Protection for Power Supply system based on C8051F330D

通过电压和电流互感器,获取供电系统的各相电压值和电流值,在精密整流的基础上,运用C8051F330D单片机对信号进行采样及外部通信,实现过电压、过电流、三相不平衡检测,从而实现对供电系统的保护。实验结果表明本设计灵敏度高,反应速度快,可靠性高。

With voltage and current mutual inductors, we obtain the voltage and current for every phase of powersystem. Based on accu- rate reatification, the signals can be sampled by the C8951F330D microchip, which can communicate with external parts. The design can realize the measurement on over voltage, over current and unbalance in hopases, and protect the power supply system. The experi- ment shows high sensitivity, rapid response and high reliabality in the system.