Latest Maintenance Technical Articles

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

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

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

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

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

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

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

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

Learn how substation commissioning verifies design intent and system integration through FAT, SAT, cold…

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

Learn how smart substations can leverage IEC 61850 and CIM for data flow. Advanced analytics and machine learning (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…

In the final part of this series, we examine substation design practices for managing two critical issues: oil…

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

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

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

As we wrap up this series, this article outlines the purpose of substation grounding, the IEE Std 80 design, and…

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

Explore electro-thermal cooling design and reliability validation for high-voltage SiC and IGBT power modules.

Explore electro-thermal cooling design and reliability validation for high-voltage SiC and IGBT power modules.

In substations, the DC system is critical for protection, control, and SCADA during AC loss. Learn about the relevant…

In substations, the DC system is critical for protection, control, and SCADA during AC loss. Learn about the relevant IEEE standards, choosing the…

This article explains the role of substation isolators, covering their purpose in visible isolation and safe operating…

This article explains the role of substation isolators, covering their purpose in visible isolation and safe operating sequences with breakers and…

In this article, learn methods for mitigating lightning- and switching-induced overvoltages in high-voltage networks…

In this article, learn methods for mitigating lightning- and switching-induced overvoltages in high-voltage networks through surge arresters,…

Here, in Part 2, we examine insulation coordination and Basic Insulation Level (BIL) in high-voltage systems for…

Here, in Part 2, we examine insulation coordination and Basic Insulation Level (BIL) in high-voltage systems for reliability against transient…

In this article, we explore high-voltage insulation coordination, focusing on the nature of overvoltages, standardized…

In this article, we explore high-voltage insulation coordination, focusing on the nature of overvoltages, standardized impulse and withstand…

Learn how to optimize and design a reliable insulation framework for an HVDC network, focusing on aspects like insulation…

Learn how to optimize and design a reliable insulation framework for an HVDC network, focusing on aspects like insulation clearance, voltage surge…

In this article, we will examine power transfer and angle stability. This is the final article in a 3-part series on long…

In this article, we will examine power transfer and angle stability. This is the final article in a 3-part series on long transmission line behavior.

In this article, we will examine wave propagation effects. This is the second article of a 3-part series on long…

In this article, we will examine wave propagation effects. This is the second article of a 3-part series on long transmission line behavior.

In this article, we will examine surge impedance loading and voltage profiles. This is the first article of a 3-part…

In this article, we will examine surge impedance loading and voltage profiles. This is the first article of a 3-part series on long transmission…