Energy and Power
How To Control Reactive Power In Larger Electrical Plants With Multiple Incomers
Most compensation banks are controlled stepwise. For this purpose it is essential to ‘know’ when it is allowed to (de)activate a capacitor step by the power factor relay (controller). The so-called C/k value is calculated by the step size C… Read more
Nov 15, 2017 | By Edvard Csanyi
Energy and Power
Improvement of Power Quality via Dynamic Reactive Power Compensation Systems
In many cases, industrial plants are characterized in particular by the use of highly dynamic drive technology. In addition to the undeniable advantages of these modern technologies, there is the disadvantage that the electrical networks are strained because of frequent… Read more
Oct 11, 2017 | By Edvard Csanyi
Energy and Power
Ten equipment you MUST recognize in every distribution substation
Distribution substation is a substation from which electric supply is distributed to the different users. In a substation there are numbers of incoming and outgoing circuits each having its isolator, circuit breaker, transformers etc. connected to bus-bar system. These equipment… Read more
Aug 11, 2017 | By Edvard Csanyi
Energy and Power
Three proven ways to reduce electrical energy losses in buildings
As savings in terms of costs are the main concern for the operators, the first approach is to try to reduce electrical energy losses in buildings. Also, the electricity supply network itself consumes energy. Moreover, if it is not suitably… Read more
Jul 24, 2017 | By Edvard Csanyi
Renewable Energy
Low voltage ride through in grid connected hybrid renewable energy systems
Researches so far shows that, by 2020, around 20% of the total energy production worldwide will be generated from renewable energy. But the major problem with the standalone system is that the sources are not continuous. This intermittent nature of… Read more
Jun 02, 2017 | By sajna soman
Electrical Lectures
How to calculate number of steps & reactive power of the capacitor banks
Depending on the size of a compensation unit, it is assembled with capacitors of equal size (in bigger units) or of different size. A unit with a total reactive power of, for example, 300 kvar consists of six power capacitors,… Read more
May 17, 2017 | By Edvard Csanyi
Energy and Power
Wiring of power factor relay on LV and MV side (circuit diagrams)
In order to measure electrical power the relay needs to receive the line voltage and current from a current transformer (CT) installed close to the metering point, if possible. To measure reactive power at the power factor relay especially, it… Read more
Mar 31, 2017 | By Edvard Csanyi
Energy and Power
Top six solutions to achieve a high level of energy efficiency in buildings
Energy efficiency in commercial buildings involves providing a given level of performance, cost, quality, availability, and comfort at a minimal level of energy usage throughout the lifecycle of a given asset or process. Generally speaking, energy efficiency involves reducing energy… Read more
Mar 27, 2017 | By Edvard Csanyi
Electrical Lectures
What is the complex power and how it figures in power analysis
Considerable effort has been expended over the years to express power relations as simply as possible. Power engineers have coined the term complex power, which they use to find the total effect of parallel loads. Complex power is important in… Read more
Mar 17, 2017 | By Edvard Csanyi
Electric Motor
The essentials of synchronous machines in power distribution networks
Synchronous machines can be used as generators or motors. They are of 3-phase construction, even though some special exceptions can be found. A bulk of the applications are within power ranges roughly varying from a megawatt level to several tenths… Read more
Mar 06, 2017 | By Edvard Csanyi
Electric Motor
Detailed calculation of currents and power according to the type of load
Currents and power analysis are key factors in any design or redesign of an installation they will enable the source(s) to be sized according to the purpose of the installation, the intended use of the circuits and the receivers to… Read more
Feb 13, 2017 | By Edvard Csanyi
Energy and Power
4 example calculations of compensation for reactive power
First, let’s say some words about basics of the reactive power in system. Reactive current arises in every electrical system. Not only large loads, but smaller loads as well require reactive power. Generators and motors produce reactive power, which causes unnecessary… Read more
Jan 20, 2017 | By Edvard Csanyi
Energy and Power
Tips for power factor correction and good protection of capacitors
Loads such as induction motors draw significant reactive power from the supply system, and a poor overall power factor may result. The flow of reactive power increases the voltage-drops through series reactances such as transformers and reactors, it uses up… Read more
Oct 26, 2016 | By Edvard Csanyi
Energy and Power
Calculate reactive power of the capacitor bank and improve power factor
For the dimensioning of the capacitor bank to be installed in order to improve the power factor of a plant, it is necessary to calculate correctly the power factor according to the consumption or to the load cycle of the… Read more
Aug 24, 2016 | By Edvard Csanyi
Electrical Lectures
The basics of power in alternating current circuits (you MUST NEVER forget)
In a DC circuit, the power is equal to the voltage times the current, or P=V×I. This is also true in an AC circuit when the alternating current and voltage are in phase. That is, when the circuit is resistive…. Read more
Jul 08, 2016 | By Edvard Csanyi
