Electricity Today T&D Magazine – Intelligent Transformers & Substations Fall 2025 Special Edition

In this issue, we take a focused look at how intelligent transformers and digital substations are reshaping modern power systems. As utilities embrace data informed decision making and smarter infrastructure, technologies such as AI analytics, digital twins, IEC 61850 Edition 2.1, and advanced monitoring tools are becoming essential for improving reliability and operational awareness.

Intelligent transformers now provide continuous insight into equipment health through real time data, allowing utilities to identify emerging problems earlier and plan maintenance with greater accuracy. At the same time, digital substations are evolving through streamlined process bus architectures, interoperable testing practices, and modern communication networks that support safe and dependable protection performance. Cybersecurity expectations are also rising, with zero trust principles and stronger supply chain oversight becoming fundamental to substation risk management.

Together, these developments reflect a clear industry movement toward smarter, more resilient, and more connected grid assets. This edition brings these themes together to help professionals understand the technologies and engineering practices that define the next generation of transformer and substation intelligence.

Read Our Feature Articles

• Artificial Intelligence and Machine Learning for Predicting Transformer Faults

• Zero Trust Substations and the Shift in Cybersecurity Risk Management

• Inside the Digital Substation Upgrade with IEC 61850 Edition 2.1

• Deterministic Communications with Time Sensitive Networking and Private 5G

• AI at the Substation Edge using Digital Twins and Predictive Maintenance