Desktop and field evaluation of dielectric response diagnostic measurement system for medium voltage underground cable

TNB as a utility company, recognized MVUG cables is a critical asset group as asset performance and life cycle cost has significant impact on service level standards and business objectives of TNB. Asset Operation & Maintenance strategy for MVUG cables has been focus on the continuous development of condition assessment and condition-based maintenance methodology to identify predominantly weak spots or localized insulation defects in joints and terminations. The next phase will involve application of diagnostic technologies to assess the condition and remaining life of global insulation of MVUG cables (both PILC and XLPE), assessment of risk and to prioritize investment on replacement of aging cables and optimized maintenance cycles. This project reported work done to conduct an evaluation of Dielectric Response Measurement based on desktop and field testing analyses and findings on areas related to applicability, suitability and effectiveness of Dielectric Response Measurement in determining the health condition of MVUG Cables.