9 basic rules for dimensioning of electric circuits
Basically, the dimensioning process itself is easy to understand and can be performed using simple means. Its complexity lies in the procurement of the technical data on products and systems,… Read more
Oct 16, 2015 | By Edvard Csanyi
7 Methods To Avoid Insulator Flashovers
Contamination caused insulator flashovers produce frequent outages in severely contaminated areas. Lines closer to the ocean are in more danger of becoming contaminated. Several countermeasures have been proposed to improve… Read more
Oct 14, 2015 | By Edvard Csanyi
Testing Challenges in Large Ground Systems
Large ground systems, such as those found in substations and power stations, are an important part of the protection of the electricity supply network. They ensure that fault current will… Read more
Oct 12, 2015 | By Edvard Csanyi
10 Important Definitions Applied To Low Voltage Fuses
The simplest of all overcurrent protective devices are fuses. A fuse is an overcurrent protective device with a circuit-opening fusible part that is heated and severed by the passage of the… Read more
Oct 10, 2015 | By Edvard Csanyi
6 Voltages a Person Can Be Exposed To In a Substation
Figures 1 and 2 show the voltages a person can be exposed to in a substation. There are many definitions related to these voltages, but the following six are the… Read more
Oct 09, 2015 | By Edvard Csanyi
The Basics Of Distribution Substations For Electrical Engineers (Beginners)
Distribution substations serve a wide range of private and public customers in distributing electric power. They can be shareholder, cooperatively, privately, and government owned. All substations contain power transformers and… Read more
Oct 07, 2015 | By Edvard Csanyi
Few things that capacitors do perfectly
Capacitors provide tremendous benefits to distribution system performance. Most noticeably, capacitors reduce losses, free up capacity, and reduce voltage drop. Let’s go a little bit into details. By canceling the… Read more
Oct 05, 2015 | By Edvard Csanyi
Applying Variable Speed Drives To Control Pressure
Using variable speed drives (VSDs) to control pressure reduces the electrical energy requirements by reducing the amount of hydraulic energy actually produced. A basic pressure control pump station is equipped… Read more
Oct 03, 2015 | By Edvard Csanyi
Synchronizing Generator To The Grid
Having discussed the principles of synchronizing the generator to the grid, we will look briefly at the physical method of accomplishing it. In theory, there are at least two simple… Read more
Oct 02, 2015 | By Edvard Csanyi
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… Read more
Sep 30, 2015 | By Edvard Csanyi
FACTS Devices To Enhance Power System Performance
Flexible Alternating Current Transmission System (FACTS) simply refers to a combination of power electronics components with traditional power system components. They are intended to improve our power system reliability, power… Read more
Sep 28, 2015 | By sajna soman
Acceptable levels of distortion in the mains supply system
In the mains supply system, harmonic voltage distortion is the consequence of the flow of harmonic currents through the impedances in the power supply circuit connected to the converter. A… Read more
Sep 26, 2015 | By Edvard Csanyi
Surge Protective Devices In TN Systems (Guide For Low Voltage Electricians)
For “protection against electric shock under fault conditions“ in TN systems, overcurrent and residual current devices have been approved. For the use of surge protective devices (SPDs) this means that… Read more
Sep 25, 2015 | By Edvard Csanyi
Analysis of pole-mounted MV/LV transformer grounding
Let’s discuss in some detail the reasons for the grounding philosophy adopted for pole-mounted MV/LV transformer substations illustrated in Figure 0. Contents: LV grounding MV grounding Combined MV/LV grounding Separate… Read more
Sep 23, 2015 | By Edvard Csanyi
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… Read more
Sep 21, 2015 | By Edvard Csanyi