Patent ID: 11887753
Assignee: BATTELLE MEMORIAL INSTITUTE
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 12:
13. A system for assessing cable insulation age-related damage, the system comprising:
a cable jacket encompassing cable insulation and conductive material;
at least two tine gap interdigital capacitor assemblies engaged with and residing upon the exterior of the cable jacket; and
a first tine gap interdigital capacitor assembly configured to engage with a first portion of the exterior of the cable jacket, the first tine gap interdigital capacitor assembly comprising a first electrode, and the engaging comprising aligning the first electrode on the exterior of the cable jacket;
a second tine gap interdigital capacitor assembly having a different gap width than the first tine gap interdigital capacitor assembly and configured to engage with a second portion of the exterior of the cable jacket, the second tine gap interdigital capacitor assembly comprising a second electrode, and the engaging comprising aligning the second electrode on the exterior of the cable jacket;
processing circuitry operatively engaged with the capacitor assembles and configured to:
determine a first capacitance or dissipation value of the cable insulation using the first tine gap interdigital capacitor assembly;
determine a second capacitance or dissipation value of the cable insulation using the second tine gap interdigital capacitor assembly; and
estimate capacitance or dissipation factor of the cable insulation using a calibrated regression model, wherein said estimating includes calibrating the regression model by determining 2-factor linear regression coefficients of the regression model based on the first and second values.