Proactive Diagnostics Are the Key to Keeping the Lights On | Diego Robalino Vanegas, Megger

Proactive Diagnostics Are the Key to Keeping the Lights On | Diego Robalino Vanegas, Megger

by Diego Robalino (guest), Chris Gerber (host) · View the channel on PSI

Applied Sciences & Engineering Energy THEnergy technology and engineeringTHRElectrical engineering
🎙 Diego Robalino (guest), Chris Gerber (host) 👥 597 📅 September 30, 2026 ⏱ 18 min 👁 15 📄 expert opinion 🧭 2026-10-06
Available in: English (current) Français

Keywords

transformerDGAoil samplingpredictive maintenancepower grid

Summary

At CIGRE 2026, Dr. Diego Robalino of Megger discusses transformer diagnostics, focusing on liquid insulation as an information carrier for condition monitoring. He explains the role of DGA in detecting thermal faults, arcing, and partial discharge, and highlights the importance of combining online and offline monitoring. He addresses data overload by introducing the Megger Transformer Intelligence Center, which provides a fleet-wide health index. A practical roadmap for oil sampling is presented: dielectric breakdown, dissipation factor at 25 and 90 degrees, and Karl Fischer moisture test, enabling same-day energization decisions. He emphasizes the difference between risk and criticality, using a traffic light system for maintenance prioritization. The interview covers testing frequency (every three months after commissioning, then annually) and the value of proactive maintenance over reactive ‘firefighting’.

126 words

Critical Evaluation

Value of the Information & Strength of the Argument

The video offers valuable practical insights into transformer maintenance, drawing on the guest’s 16 years of experience. The argumentation is clear and logical, focusing on how liquid insulation provides critical information without shutting down equipment. The emphasis on onsite testing for rapid decisions is well-argued, and the distinction between criticality and risk is a useful concept. However, the argument is largely based on anecdotal experience and company perspective, lacking quantitative evidence or case studies.

Scientific Rigor, Source Quality, Title Accuracy

The video references industry standards (IEC, IEEE) and methodologies like Duval triangles and Karl Fischer titration, indicating a foundation in established practice. However, it provides no specific studies or external research, and the sources cited are promotional links to company social media and website. The title accurately reflects the content, which focuses on proactive diagnostics to prevent transformer failures.

148 words

Title / Content Match

The title accurately reflects the central theme of proactive diagnostics to prevent failures.

Quality & Reliability

7/10

Best practices from a veteran Megger expert, aligned with industry standards (IEC, IEEE), but presented in a promotional context with no independent verification or specific data references.

Chapters

Cited Sources

Contribution & Novelties

The main contribution is a structured approach to transformer oil diagnostics, offering a practical roadmap for onsite testing and a traffic-light decision framework. It also highlights the importance of considering criticality in asset management. While not groundbreaking, it consolidates existing knowledge into actionable steps for utilities.

Pour aller plus loin :

79 words

Radar Profile

The radar shows moderate scores across the board, with quality slightly higher than quantity, indicating a concentrated but reliable presentation of industry practices. Technical level is moderate, accessible to engineers.

Reliability 7/10