The Design of Capacitive Current's Automatic Compensate Device in Mine Power Supply System

摘要

In this paper, power supply coal mine safety requirements, the design of coal Capacitive current power supply system automatic compensation device. The use of the device C8051F021 MCU control system extracts the zero-sequence voltage and zero-sequence current, which measured current of capacitors, and after the necessary calculations of the value of the parallel capacitor size, the use of two-way Thyristor Switched capacitor, the realization of capacitive current automatic Compensation and improved the reliability of power supply system.