Electrical Lectures
Basic measuring devices explained through cute simple schemes
In this technical article, you should gain a basic understanding of the desirable properties of practical devices for the measurement of electrical parameters. The measurements most often of interest are those of current, voltage, power, and resistance. In analogy with… Read more
Oct 21, 2015 | By Edvard Csanyi
Energy and Power
Phases and wires in distribution of AC power
AC power transmission is always at high voltage and mostly by 3-phase system. The use of single-phase system is limited to single-phase electric railways. Single-phase power transmission is used only for short distances and for relatively low voltages. By the… Read more
Oct 19, 2015 | By Edvard Csanyi
Energy and Power
4 Things Soil Resistivity Depends On
Though the ground itself being a very large body can act as an infinite sink for currents flowing into it and can be considered to be having very low resistance to current flow, the resistance of soil layers immediately adjacent to the… Read more
Oct 17, 2015 | By Edvard Csanyi
Energy and Power
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, which can be found in various technical standards and regulations… Read more
Oct 16, 2015 | By Edvard Csanyi
High Voltage
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 insulator performance. The most frequently used methods are: Increasing leakage… Read more
Oct 14, 2015 | By Edvard Csanyi
Energy and Power
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 enable protective devices to operate correctly. A substation must have… Read more
Oct 12, 2015 | By Edvard Csanyi
Electrical Lectures
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 overcurrent through it. Let’s talk about ten important definitions that are… Read more
Oct 10, 2015 | By Edvard Csanyi
Power Substation
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 most important. These definitions are: Ground potential rise (GPR) Mesh… Read more
Oct 09, 2015 | By Edvard Csanyi
Power Substation
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 the voltage-regulating apparatus required for converting the high incoming sub-transmission… Read more
Oct 07, 2015 | By Edvard Csanyi
Energy and Power
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 reactive power to motors and other loads with low power… Read more
Oct 05, 2015 | By Edvard Csanyi
Industrial Automation
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 with one pump controlled by one variable speed drive (VSD)…. Read more
Oct 03, 2015 | By Edvard Csanyi
Energy and Power
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 measurements or indications, which can be used for synchronizing a… Read more
Oct 02, 2015 | By Edvard Csanyi
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
High Voltage
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 transfer capability, transient and dynamic stability improvements, voltage regulation etc…… Read more
Sep 28, 2015 | By sajna soman
Energy and Power
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 typical power supply system at an industrial or mining plant… Read more
Sep 26, 2015 | By Edvard Csanyi
