基于单片机的漏电保护装置设计

In this paper introduced the characteristics and leakage current leakage protection device useing in low-voltage power supply system, And analysis of leakage protection device in the system of difference. Designed a leakage protection devices based on MCU for TT system.The device with leakage currents of the phase and amplitude detection, line temperature measurement, fire detection and fire interaction and feedback. The device can quickly analyze the fault phase, make appropriate treatment measures based on information fusion technology to achieve intelligent leakage protection device. Use Matlab and Protues software, single-phase, two-phase characteristics of leakage current waveform simulation of TT system and the microcontroller operation simulation.The results show that the design meets the design requirements.