The Design of Power Supply System for Oil Well Casing Cathodic Protection with Pulse Current Based on C8051F020
Using ordinary DC-based potentiostat can not achieve real protection depth of well casing, as a result,this cathiod protection is not comprehensive.This paper presents a special pulse cathodic protection system of well casing using power supply, based on the core unit of 8051MCUF020, the power supply use the second inverter form as main circuit structure, and use phase-locked loop frequency multiplier to ensure the accuracy of the sampling, use PID closed-loop method as control strategy.The prototype has perfect functional, adjustable pulse parameters, stable and reliable.
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