Energy and Power
Operating centralized automatic compensation systems when supplying linear loads
For energy-efficient operation of decentralized multiply-fed industrial networks, each load-centre substation must have its own centralized reactive-power compensation system for automatic PF correction. The automatic reactive-power compensation systems used for load-related control of the reactive power comprise a PF controller… Read more
Sep 16, 2019 | By Edvard Csanyi
Power Substation
Testing and commissioning of HV power transformers, circuit breakers, CTs and VTs
As you already know, substations are the points for controlling the supply of power on different routes by means of various equipment such as power transformers, circuit breakers, CTs/VTs, compensating equipment, isolators, etc. The various circuits are joined together through… Read more
Sep 11, 2019 | By Edvard Csanyi
Protection
Interference and noise affecting transmission media in protection signalling
The transmission media that provide the communication links involved in relay protection signalling are private pilots, rented pilots or channels, power line carrier, radio and the newest and the most advanced technology – optical fibres. Historically, pilot wires and channels… Read more
Sep 09, 2019 | By Edvard Csanyi
Metering
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Field devices and signals used for LV SCADA operations
At low voltage level, SCADA applications are usually used for process control and monitoring of equipment. Furthermore, incoming circuit breakers or switch disconnectors inside large LV switchboards may also be operated remotely, by the command given from the SCADA working…...
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Sep 05, 2019 | By Miodrag Kokotovic
Energy and Power
The facts about modern rotary and static uninterruptible power systems (UPS)
This technical article covers the brief explanation of the power quality issues with the reference to the past as well as two main types of modern UPS systems – rotary and static uninterruptible power systems, their characteristics, advantages and disadvantages…. Read more
Sep 04, 2019 | By Edvard Csanyi
Electrical Lectures
Reactive power and power factor correction essentials to ALWAYS keep on mind
Why reactive power and power factor correction are so important? Well, for experienced engineers, this is not the question but the fact. For young students who meet this matter and terms for the first time, it’s important to explain the… Read more
Sep 02, 2019 | By Edvard Csanyi
Energy Generation
Generators applicable to high reliability requirements of healthcare and other facilities
Generator systems described in this technical article are applicable to healthcare requirements, as well as other facilities that may require a high degree of reliability. The electrical supply for data centers, financial institutions, telecommunications, government and public utilities also require… Read more
Aug 28, 2019 | By Edvard Csanyi
High Voltage
10 most common locations of shunt capacitors installed in a power system
It’s quite simple, using shunt capacitor banks to supply the leading currents required by the load relieves the generator from supplying that part of the inductive current. Both distribution and transmission systems benefit due to the application of shunt capacitors… Read more
Aug 26, 2019 | By Edvard Csanyi
Premium Content
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Case study: Failure of a transformer & switchgear buses due to a ferroresonance event
First of all, it’s good to know that the possibility of a transformer ferroresonance condition rapidly increases as the transformer is closer to generator zone. This condition may occur when the generator is disconnected, leaving the unit transformer delta winding…...
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Aug 23, 2019 | By Edvard Csanyi
Energy and Power
What do you need for short-circuit calculations? The less you assume, the better!
If you ask any electrical design engineer what is the most time consuming and critical required in short circuit analysis, he/she would say that it’s obtaining available data. The less data that is assumed, the better and more accurate the… Read more
Aug 21, 2019 | By Edvard Csanyi
Energy and Power
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Six beautiful animals that cause interruptions and hazards to electric utilities
Animals are one the largest causes of customer interruptions for nearly every electric utility worldwide, right after human and other factors. Problems and mitigation techniques are as varied as the animals involved. Identifying and addressing physical root causes is often…...
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Aug 19, 2019 | By Edvard Csanyi
Energy and Power
Practical modifications of MV/LV radial distribution systems applied in buildings
This technical article covers low voltage and medium radial distribution systems with their practical modifications: loop-primary system – radial secondary, primary selective system – secondary radial and two-source primary – secondary selective system. This discussion covers the last three modifications… Read more
Aug 14, 2019 | By Edvard Csanyi
Low Voltage
The most common MV/LV radial distribution systems applied in buildings
In many cases, power is supplied by the power utility to a building at the utilization voltage. In these cases, the distribution of power within the building is achieved through the use of a simple radial distribution system. In cases… Read more
Aug 12, 2019 | By Edvard Csanyi
Energy and Power
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Top five software types that LV design engineers MUST know how to work with
Back in the early days, engineers weren’t able to use software tools for the purpose of drawing, calculation, and design. So, how did they do it? Prior to the software era, drawings were made manually, using ink and paper, while…...
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Aug 08, 2019 | By Miodrag Kokotovic
Maintenance
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Maintenance and troubleshooting guidelines for a typical high voltage switchgear
Like any other major component of the high voltage electrical network, a switchgear also needs maintenance schedules for trouble-free operation during its life cycle. No one should work on the system itself or on any plant controlled by it, without…...
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Aug 07, 2019 | By Edvard Csanyi
