New DC decoupling technology provides operators with a solution to capacitance-related data accuracy challenges seen with traditional devices when recording structure to electrolyte potentials. When CP current sources are interrupted for systems that utilize DC decouplers, the capacitors discharge. If structure to electrolyte potentials are taken prior to full discharge, data inaccuracies can result. Data accuracy challenges have historically been difficult to predict definitively, which can present challenges in selecting the appropriate device prior to mitigation installation. Computer modelling in the mitigation design phase can proactively predict the magnitude of capacitance and rate of capacitive discharge. Further, different interruption cycles and their effect on capacitive discharge can be analyzed to determine the magnitude of the issue, so the optimal DC decoupler can be chosen, minimizing project inefficiencies and costs.

Subject
Electric current, Test methods, Voltage, Cathodic protection, Capacitors, Soil resistivity, Installation, Grounding, Capacitance, Electrochemical current, Equipment, AC mitigation, Surveys
Keywords:
AC Interference, Decoupler, Capacitance, Isolation, Mitigation, Cathodic Protection, Energy Transmission, Testing, Corrosion Control, Simulation and Modelling
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2022
Association for Materials Protection and Performance (AMPP)
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