Issues with distributed generation protection (bulk power and distributed generators)

Besides a number of benefits, there are some technical problems with relay protection of distributed generators. It turned out to be one of the most problematical technical issues since its… Read more

Jul 10, 2019 | Energy Generation

Practical tips for installing surge protection devices in low voltage panel

In an electrical systems, surge protection devices (SPDs) are usually installed in tap-off configuration (in parallel) between the live conductors and the earth. The operating principle of SPD can be… Read more

Jul 08, 2019 | Energy and Power

How harmonic filters prevent distortions in networks with high harmonic levels

The subject of this technical article are harmonic filters and their design. Filtering measures are recommended and may be required for electrical systems with too high harmonic levels. Filter circuits… Read more

Jul 03, 2019 | Energy and Power

Protection of pumped storage power plants using vacuum generator circuit breaker (VGCB)

The pumped storage power plants (PSPP) are one of the commercially proven methods available for grid-scale energy storage. Building additional PSPPs particularly in the areas with high installed capacities of… Read more

Jul 01, 2019 | Energy and Power

Lightning protection system – How much of design and material is really needed?

Within this article, an overview of fundamental principles regarding design and construction of lightning protection system (LPS) will be given. Relevant IEC 62305 standard will be used as a reference…....

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Jun 28, 2019 | Premium Content ♛

Differential protection of a transmission line with digital communication via pilot wires

Wire connections have a limited transmission bandwidth (3.4 kHz in the case of telephone twisted pairs). In the past they were used for differential protection with analog (50 Hz) measured… Read more

Jun 26, 2019 | Protection

MV/LV transformers – The most common power supply in low voltage networks

The general term power supply in LV networks refers to the supply of electrical energy. The power supply, and more generally the different supplies, are provided by sources (mains supply,… Read more

Jun 24, 2019 | Energy and Power

Fuses as the oldest and simplest method of protecting rural distribution systems

Fuses are the oldest and simplest methods of protecting rural networks. There is no method as simple as fuses, but don’t be tricked, modern fuses are very reliable devices. All… Read more

Jun 19, 2019 | Protection

Using earth & phase directional protection where power flow direction might change

Directional protection relay is often used in all network parts in which the direction of flow of power might change, notably in the instance of a short circuit between phases… Read more

Jun 17, 2019 | Protection

The most important precautions during commissioning and start up of LV switchgear

Low voltage switchgear can often be very complex and expensive piece of electrical equipment, usually representing one of the most critical and crucial parts of the project. In order to…...

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Jun 13, 2019 | Low Voltage ♛