Energy and Power
Substation AC Auxiliary Supply For Inessential Loads
The purpose of auxiliary power supply systems is to cater for the necessary energy for the operation of primary and secondary devices at the substation. The auxiliary power systems are normally divided in two categories, namely the AC system and… Read more
Sep 30, 2015 | By Edvard Csanyi
Energy and Power
Substation DC Auxiliary Supply – Battery And Charger Applications
A power substation can have one or several DC systems. Factors affecting the number of systems are the need for more than one voltage level and the need for duplicating systems. Today, normal DC auxiliary supply systems in power substations are… Read more
Sep 21, 2015 | By Edvard Csanyi
Medium Voltage
SF6 or Vacuum MV Circuit Breaker In Specific Switching Applications
Many years of experience in developing both SF6 and vacuum medium-voltage circuit breakers has yielded up ample evidence that neither of the two technologies is generally better than the other, and especially that they are complementary from the application point… Read more
Sep 14, 2015 | By Edvard Csanyi
Energy and Power
6 Customer Requirements For a Generator Regarding Power Demand
To select an on-site engine/generator sets (gensets), you’ll need to determine the power demand requirements which must be met under operating conditions, of course. Let’s talk about six recognized customer genset requirements regarding power demand // On Site Power Requirement Load… Read more
Sep 12, 2015 | By Edvard Csanyi
Cables
Differences in size and weight of equipment using copper and aluminium conductors
It is a common misconception that electrical equipment built using aluminum conductors will always be larger than the same equipment using copper conductors. While the actual conductor within the equipment will be larger with aluminum, many times the enclosure for… Read more
Jul 13, 2015 | By Edvard Csanyi
Medium Voltage
Medium Voltage Earthing Systems – Arrangements and Comparison
First, let’s define the different medium voltage earthing systems and then compare the advantages and disadvantages of each one. Earthing systems in medium voltage can be differentiated according to the neutral point connection method. The various earthing systems in medium… Read more
Jul 03, 2015 | By Edvard Csanyi
Power Substation
Basic Stand-Alone Application of Reclosers
Reclosers are self-contained fault interrupting and reclosing devices, specifically designed for overcurrent protection in secondary distribution systems. Reclosers are situated in selected locations within the overhead distribution network. With the correct protection setting and MV fuse selection coordination, concerning the… Read more
Apr 15, 2015 | By Edvard Csanyi
Power Substation
Configurations and characteristics of distribution substations
Distribution substations come in many sizes and configurations. A small rural substation may have a nominal rating of 5 MVA while an urban station may be over 200 MVA. Figures 1 through 3 show examples of small, medium, and large… Read more
Apr 13, 2015 | By Edvard Csanyi
Power Substation
Important primary distribution (radial and loop) system considerations
The primary distribution system is that part of the electric distribution system between the distribution substation and distribution transformers. It is made up of circuits called primary feeders or distribution feeders. These feeders include the primary feeder main or main… Read more
Apr 06, 2015 | By Edvard Csanyi
Power Substation
6 Transformer Types You Can See In Commercial Installations
Transformers in commercial installations are normally used to change a voltage level from a utility distribution voltage to a voltage that is usable within the building, and are also used to reduce building distribution voltage to a level that can… Read more
Mar 16, 2015 | By Edvard Csanyi
Energy and Power
How can I select the right capacitors for my specific application needs?
Once you’ve decided that your facility can benefit from power factor correction, you’ll need to choose the optimum type, size, and number of capacitors for your plant. There are two basic types of capacitor installations: individual capacitors on linear or… Read more
Feb 13, 2015 | By Edvard Csanyi
Energy and Power
Ring Main Unit (RMU) as an important part of secondary distribution substations
Before getting into “What is RMU” question, let’s say a word about the distribution system where RMU is often used. Distribution systems encompass power lines that transport energy from the transmission network or other sources to consumers, along with the… Read more
Feb 11, 2015 | By Edvard Csanyi
Energy and Power
Important generator set (genset) rating considerations
A generator set (genset) consists of an engine and a generator and it is best to consider each of them as a system. Individually, each has unique characteristics, but together these qualities have a significant impact on the performance and sizing of the genset… Read more
Jan 30, 2015 | By Edvard Csanyi
High Voltage
Main and Transfer (Inspection) Bus Arrangement commonly used in AIS
The main and transfer bus configuration connects all circuits between the main bus and a transfer bus (sometimes referred to as an inspection bus). Some arrangements include a bus tie breaker and others simply utilize switches for the tie between… Read more
Aug 13, 2014 | By Edvard Csanyi
Power Substation
Site selection considerations for the future power substation
At this stage, a footprint of the future power substation should be developed, including the layout of the major equipment. A decision on the final location of the facility can now be made and various options can be evaluated. Final grades,… Read more
Jul 30, 2014 | By Edvard Csanyi
