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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 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…


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…


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…


What We Can Learn From Five California Microgrids

What We Can Learn From Five California Microgrids

Learn how California microgrids offer resilience and cost savings for critical facilities like data centers, using hybrid renewable systems (solar,…


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…


The Hidden Costs of Outdated Power Plant Practices — And How to Fix Them Fast

The Hidden Costs of Outdated Power Plant Practices — And How to Fix Them Fast

Building integrated and modern systems enable resilient, efficient, and safer operations that…


Smart Substations and Digitalization—Part 3: Comms and Data Integration

Smart Substations and Digitalization—Part 3: Comms and Data Integration

This article focuses on practical implementation details for communications and data integration in smart substations and reviews predictive…


Smart Substations and Digitalization—Part 2: IoT Devices and Sensors

Smart Substations and Digitalization—Part 2: IoT Devices and Sensors

Learn how smart substations use synchronized IoT devices compliant with key standards for high-fidelity data, enabling real-time protection and…


Smart Substations and Digitalization—Part 1

Smart Substations and Digitalization—Part 1

Digitalization replaces conventional substations with smart, standards-based systems to address modern grid demands through interoperability,…


Substation Design and Layout Planning—Part 3: Noise and Oil Control Issues

Substation Design and Layout Planning—Part 3: Noise and Oil Control Issues

In the final part of this series, we examine substation design practices for managing two critical issues: oil containment and noise control.


Substation Design and Layout Planning—Part 2: Safety and Thermal Controls

Substation Design and Layout Planning—Part 2: Safety and Thermal Controls

This article explains how a substation’s physical layout must integrate safety clearances, grounding, and thermal management.


Switching and Converter Substations

Switching and Converter Substations

This article explores the various functions of switching and converter substations, including network reconfiguration, fault isolation, and AC/DC…


Substation Design and Layout Planning—Part 1: Early Stage Decisions

Substation Design and Layout Planning—Part 1: Early Stage Decisions

In this new article series, we look at substation design and layout planning, starting here with early stage choices and physical layout.


Substation Components—Part 8: Grounding/Earthing Systems

Substation Components—Part 8: Grounding/Earthing Systems

As we wrap up this series, this article outlines the purpose of substation grounding, the IEE Std 80 design, and best-practice field testing.