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Distribution Transformers and Voltage Regulation—Part 2: Step-Down Transformers

Distribution Transformers and Voltage Regulation—Part 2: Step-Down Transformers

Distribution transformers shape network voltage and fault behavior. Learn how winding configurations, vector groups, and grounding methods impact…


More Power, More Tokens: How SSTs Are Reshaping Data Center Infrastructure

More Power, More Tokens: How SSTs Are Reshaping Data Center Infrastructure

The transition from AC distribution to the 800 V DC architecture is reshaping the data center power infrastructure, boosting token generation and…


Distribution Transformers and Voltage Regulation—Part 1: Introduction

Distribution Transformers and Voltage Regulation—Part 1: Introduction

Learn how distribution transformers bridge medium-voltage feeders and end-use equipment, ensuring stable voltage through strategic placement,…


Primary Distribution Systems—Part 5: Planning for Today’s Grid

Primary Distribution Systems—Part 5: Planning for Today’s Grid

This article connects primary distribution to feeder upgrades (FLISR, right-sizing, DER/DCFC siting) for safety, quality, and restoration.


Primary Distribution Systems—Part 4: Fault Levels and Short Circuits

Primary Distribution Systems—Part 4: Fault Levels and Short Circuits

Learn about fault levels and short-circuit protection for medium-voltage distribution. We’ll examine current sources, fault types, symmetrical…


Primary Distribution Systems—Part 3: Overhead and Underground Choices

Primary Distribution Systems—Part 3: Overhead and Underground Choices

Overhead vs. underground power distribution: Learn the cost, reliability, and design trade-offs for medium voltage power systems across urban,…


Primary Distribution Systems—Part 2: Protective Devices, Automation

Primary Distribution Systems—Part 2: Protective Devices, Automation

Protective devices, such as reclosers and sectionalizers, along with automation, can quickly detect, isolate, and restore service after faults.


Primary Distribution Systems—Part 1: Design of Feeders and Laterals

Primary Distribution Systems—Part 1: Design of Feeders and Laterals

This article discusses primary distribution system transport of medium-voltage power from substations via feeders to local transformers to ensure…


Distribution System Fundamentals—Part 2: Topologies and Reliability

Distribution System Fundamentals—Part 2: Topologies and Reliability

Explore distribution topologies, from simple radial feeders to complex networks, and examine reliability metrics, common causes of outages, and…


Distribution System Fundamentals—Part 1: Networks

Distribution System Fundamentals—Part 1: Networks

This overview develops distribution’s role within the power system hierarchy, its functional objectives and constraints, and the common voltage…


Substation Commissioning and Testing—Part 4: SCADA and Comms Systems

Substation Commissioning and Testing—Part 4: SCADA and Comms Systems

Learn how modern substation commissioning extends beyond plant checks to verify SCADA, comms, cybersecurity, and data integrity for safe operation…


Substation Commissioning and Testing—Part 3: Field Testing

Substation Commissioning and Testing—Part 3: Field Testing

Substation field testing ensures long-term reliability. It verifies instrument transformers , circuit breakers, and protection relays against…


Choosing Between Gas-Insulated and Air-Insulated Substations

Choosing Between Gas-Insulated and Air-Insulated Substations

This article compares gas-insulated (GIS) and air-insulated substations (AIS), outlining their design principles, performance characteristics, and…


Substation Commissioning and Testing—Part 2: Pre-Commissioning Inspections

Substation Commissioning and Testing—Part 2: Pre-Commissioning Inspections

This article walks through pre‑commissioning inspections and electrical tests commonly used in utility and industrial substations, translating…


High-Precision Digital Temperature Sensors Thanks to Wafer-Based Calibration

High-Precision Digital Temperature Sensors Thanks to Wafer-Based Calibration

Power electronics plays a crucial role in modern temperature sensor systems, enabling efficient signal conditioning, energy management, and data…


Beyond Mobility: Delivering Proven SiC Technology Where Performance and Reliability Matter the Most

Beyond Mobility: Delivering Proven SiC Technology Where Performance and Reliability Matter the Most

Learn how Mitsubishi Electric’s latest Unifull SiC modules combine advanced performance with enhanced power cycling capability enabled by…


Substation Commissioning and Testing—Part 1: Scope and Workflow

Substation Commissioning and Testing—Part 1: Scope and Workflow

Learn how substation commissioning verifies design intent and system integration through FAT, SAT, cold (pre-energization), and hot…


Smart Substations and Digitalization—Part 5: Future Trends

Smart Substations and Digitalization—Part 5: Future Trends

This article discusses trends in AI-assisted smart substations, including sensor density, autonomous and self-healing networks, and inverter-based…


Solving Military-Avionics DC-DC Power Challenges with Modularity—Part 4

Solving Military-Avionics DC-DC Power Challenges with Modularity—Part 4

While the first three parts in this article series detailed military and avionic standards and front-end solutions, this last Part 4 delves into…


Smart Substations and Digitalization—Part 4: Data Analytics and ML

Smart Substations and Digitalization—Part 4: Data Analytics and ML

Learn how smart substations can leverage IEC 61850 and CIM for data flow. Advanced analytics and machine learning (ML) can turn high-res data into…