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Power Systems Technical Articles

Our experts continuously work on power systems problems, and we share solutions with Practical Reference Articles.

The main topics are earthing system modeling, power cable ratings, HV/LV electrical design, protective device coordination, and arc flash studies. We cover IEC and IEEE standards.

Sign up for my email newsletter and I will send you the latest technical articles as they are released – Jayson Patrick

Photo of Jayson Patrick for Technical Articles page about electrical power systems Design

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Low Voltage Design
Earthing Design
High Voltage Cable Design
Arc Flash Studies
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A person wearing an orange safety vest holds a cross-section of a high-voltage power cable, showing multiple concentric copper segments.
17 mins read

HVDC Cable Current Ratings: Thermal and Electrical Stress Constraints

Comprehensive analysis of field inversion, IEC 60287 Standards, finite element modelling, and case studies to optimise HVDC cable ampacity and insulation design.
Offshore wind farm with several turbines above water and underwater cables visible, set against a calm sea and a partly cloudy sky.
4 mins read

Thermal Analysis for HVDC Submarine Cables: Meeting the 2 K Criterion

Learn about thermal analysis for HVDC submarine cables, focusing on the 2 K Criterion to minimize environmental impacts.
Cable laying vessel lays cable at sea for an offshore wind farm 1170x585 - Articles - High Voltage Cable Design
10 mins read

Submarine Power Cable Current Ratings (2025 update)

The calculation of submarine cable current ratings is different from land cables due to their complex construction and installation conditions.
A trench with several large orange pipes protruding through a rectangular board. Workers and construction materials are in the background.
5 mins read

Soil Temperature Calculations for Power Engineering

Soil temperature affects high voltage cable and earthing systems. Equations for soil temperature calculations based on air temperature are provided.
Close-up of a high-voltage power cable, showing layers of insulation, copper conductors, and outer black sheath.
5 mins read

Summary of Electric Power Cable History

This article provides a timeline of the key milestones from early 19th century insulated wires through to modern innovations in high-voltage cables.
Four thermal maps display varying heat distributions in a target area, with colors ranging from blue (cool) to red (hot).
7 mins read

Advanced Soil Drying for Accurate Ampacity Calculations

New methods address IEC 60287 limitations for soil drying calculations. Considers multiple circuits, load factor, and backfill installations for accurate power cable ampacity.
Infrared image of cable tray showing temperature gradients with adjacent diagrams labeled Flat (1), Flat (2), Trefoil (1), Trefoil (2), and check or crossmarks indicating status.
8 mins read

Ampacity of Power Cables Installed in Trays

Explore the factors affecting cable ampacity in trays, including thermal and electromagnetic effects. Learn calculation methods and best practices for safe power cable installations.
Offshore Wind Farm ELEK Software 1170x585 - Articles - High Voltage Cable Design
2 mins read

Cable Tray Material Selection for Offshore Facilities

Based on extensive field experience, this article recommends the best materials for cable trays for use in offshore facilities such as offshore wind, solar, and oil rigs.
Cable trench being backfilled by an excavator 1170x585 - Articles - High Voltage Cable Design
5 mins read

Typical Thermal Resistivity of Backfill Soils and Concrete

It's difficult to decide on the thermal resistivity of soil or backfill to use for cable rating studies. The typical thermal resistivities of common native soils and engineered materials used as backfills for buried cables are provided in tables.
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