Electrical Lectures
Reactive Power and Compensation Solution Basics For Students
The total power, the so-called apparent power, of a transmission network is composed of active and reactive power (Figure 1). While the power consumers connected into supply transform the active power into active energy, the reactive energy pertaining to the… Read more
Feb 17, 2016 | By Edvard Csanyi
Energy and Power
Real time reactive compensation – A case with 5 problems and solutions
A car equipment manufacturer’s plant in Concord (Ontario, Canada) is supplied by a transformer rated at 2000 kVA – 27.6 kV / 600 V – Yy – Ucc = 5.23 %. It manufactures exhaust assemblies from steel plate using spot welders and… Read more
Dec 11, 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
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
Can you really reduce kVA billing after installing power capacitors?
This technical article I dedicate to stubborn factory owners who still don’t believe and don’t want to spend the money on optimizing the factory costs. Not all of them are like that, but the most of them ‘not-much-electrically-educated’ are. So,… Read more
Sep 04, 2015 | By Edvard Csanyi
Electrical Lectures
4 Main Means For The Generation Of Reactive Power
The four main means for the generation of reactive power are: synchronous alternators, synchronous compensators (SC), static var compensators (SVC) and banks of static capacitors. Contents Synchronous alternators Synchronous compensators (SC) Static var compensators (SVC) and Banks of static capacitors… Read more
Jun 29, 2015 | By Edvard Csanyi
Energy and Power
Why it’s important to know which type of power factor correction to use
It’s important to understand where the capacitors are to be installed for a better exploitation of such advantages. There are no general rules applicable to every type of installation and, in theory, capacitors can be installed at any point, but it… Read more
Mar 09, 2015 | By Edvard Csanyi
Transmission and Distribution
HVDC VSC Technology For Offshore Wind Farm Applications
The demand for the power is increasing day by day. The only one solution for this is to use the renewable sources of energy like wind, solar, water etc. Among this wind can produce major amount of power. Since the… Read more
Jan 19, 2015 | By Midhun Krishnan
Testing and Commissioning
Testing of power transformer – Measurement of impedance voltage and load loss
The measurement is carried out to determine the load-losses of the transformer and the impedanse voltage at rated frequency and rated current. On Figure 1 above (Circuit for the impedance and load-loss measurement) there are following figures: G1 – Supply… Read more
Mar 12, 2014 | By Edvard Csanyi
High Voltage
8 main disadvantages of HVDC transmission
Few weeks back I posted an article about advantages of HVDC over HVAC transmission systems. Advantages of HVDC are numerous and very well recognized, but like everything on this earth this system has other side too. The eight main disadvantages… Read more
Jan 10, 2014 | By Edvard Csanyi
High Voltage
Talking about HV shunt reactor switching (1)
These notes aim to give basic idea of the main criticalities related to HV shunt reactor switching, particularly in terms of voltage, and how such problems are faced and solved by modern switching technology. Content: Shunt reactors application Closing operation… Read more
Jul 29, 2013 | By Nicola
Energy and Power
Preparing to synchronize a generator to the grid
Synchronizing the generator to the grid can be tricky if you don’t know what you’re doing. But let’s start from the beginning. A device that transforms mechanical power from a prime mover into AC electric power at a particular voltage… Read more
Mar 27, 2013 | By Edvard Csanyi
Low Voltage
Defining Size and Location of Capacitor in Electrical System (2)
Continued from part 1: Defining Size and Location of Capacitor in Electrical System (2) Size of circuit breaker (CB), fuse and conductor of capacitor bank: A. Thermal and magnetic setting of a circuit breaker B. Fuse selection C. Size of… Read more
Mar 11, 2013 | By Jignesh Parmar
Energy and Power
What’s common for Beer Mug and Power Factor?
Understanding power factor is not that hard. We have some very common example from the real life you will understand for sure, but first let’s start with some introduction of power factor. To understand power factor, we’ll first start with… Read more
Nov 15, 2012 | By Edvard Csanyi
Transformers
Differences between Shunt Reactor and Power Transformer
Shunt Reactor and Transformer both appear similar in construction. Reactors are also often equipped with Fans for cooling similar to Power Transformers. However, there are major differences between the two. While a Power Transformer is designed for efficient power transfer… Read more
Sep 18, 2012 | By Edvard Csanyi
