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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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Offshore wind turbine being constructed 2 1170x585 - Articles - High Voltage Cable Design
2 mins read

Wind Farm Dynamic Cable Ratings

This article explains why dynamic ratings are important when dealing with long AC cables for wind farms. An example calculation of a dynamic rating which uses the measured load profile is given.
A diagram illustrating various cable types used in renewable energy software.
3 mins read

Waveform Cables Current Ratings

Waveform cables are commonly used in the UK for low-voltage power networks. The term waveform refers to the way the neutral/earth wires are laid around the cores/bedding. Using this configuration enables the neutral/earth wires to be opened so a connection can be made to the conductors anywhere along its length.
figure 4 1170x585 - Articles - High Voltage Cable Design
10 mins read

Magnetic Fields from High Voltage Power Cables

This article analyses the magnetic fields produced by electrical power cables installed in various configurations under varying conditions in the context of a health and safety-related issue. A software program has been used for calculating the results based on the Biot-Savart law. Techniques for the mitigation of magnetic fields are also presented.
ELEK Cable HV Software Screenshot - Articles - High Voltage Cable Design
2 mins read

Comparison of CYMCAP with Cable HV Software Results

We have benchmarked our Cable HV Software current rating results for 110 kV cables against the well-known software CYMCAP. We have shown the results are virtually identical (under 1.5 % difference).
Overhead power line with sun 1170x585 - Articles - High Voltage Cable Design
8 mins read

Factors Affecting Bare Conductor Current Ratings

The current rating of bare conductors is affected by the conductor temperature, weather parameters, heat losses due to convection and radiation, the solar heat gain and conductor resistance, the calculation of which is governed by a steady-state and a non-steady-state heat balance equation.
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