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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.

Join 23K+ engineers and get our latest technical articles direct to your inbox as they are released – Jayson Patrick

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Low Voltage Design
Earthing Design
High Voltage Cable Design
Arc Flash Studies
ELEK vs Competitors
Electrical Software
4 mins read

Use of Rods to Improve Grid Safety

To show how and when earthing rods can be used to improve the safety of earthing grids by reducing the grid resistance and potential rise (GPR) as well as surface, step and touch potentials.
Digital illustration of an electrical substation with blue and orange energy flows, representing the transfer and distribution of electrical power in a grid network.
6 mins read

CDEGS vs. ELEK SafeGrid Software

Compare CDEGS vs ELEK SafeGrid for earthing design software. See differences in features, soil modelling, safety calculations, accuracy, and usability for substation earthing 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.
7 mins read

Derating for Cable Crossings

Crossing multiple cables or heat sources at a crossing angle causes a current rating reduction, calculated using IEC Standard 60287.
5 mins read

Current Rating of Cables in Ventilated Tunnels

The methods for calculating the current rating of multiple cables installed in ventilated tunnels are explained with example calculations. Overall tunnel length and air velocity inside the tunnel have a significant impact on cable current ratings.
A group of thick black cables secured with zip ties is arranged in front of a metal support structure. Some cables are marked with blue or red labels.
4 mins read

Current Rating of Ten Cables Touching in Air

The standard HV cable rating calculation methods do not cover all real-world situations. This article proposes a new method of finding the current rating for 10 cables touching in the air.
Offshore wind farm with several turbines above water and underwater cables visible, set against a calm sea and a partly cloudy sky.
7 mins read

Cable Current Rating in J-Tubes for Offshore Windfarms

This article explains how to calculate the current rating of cables in J-tubes. Typically J-tubes are the thermal bottleneck of submarine power cable routes.
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.
3 mins read

Lightning Strikes to Buildings with Earthing Systems

This report shows the effects of a direct lightning strike to an air terminal installed on top of a building which is connected to a buried earthing system.
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