High Voltage
Power Fuses in High Voltage
Power fuses are a generally accepted means of protecting power transformers in distribution substations. The primary purpose of a power fuse is to provide interruption of permanent faults. Fusing is… Read more
Jul 11, 2011 | By Edvard Csanyi
Hydropower
Economic analysis of an mini hydro power plant (MHPP)
Micro hydro projects must be proven to attract the interest of investors. It is also of key importance in enabling financial institutions to supply the funds necessary to finance the… Read more
May 20, 2011 | By Edvard Csanyi
Energy and Power
Improve power transfer with shunt capacitor banks
Shunt capacitor banks are used to an increasing extent at all voltage levels. There are a variety of reasons for this like the growing need for power transfer on existing… Read more
Apr 24, 2011 | By Edvard Csanyi
Electric Motor
VSD – Power supply connections and earthing
In accordance with accepted practice and the local, power is normally provided to a VSD from a distribution board (DB) or a motor control center (MCC). Adequate arrangements should be… Read more
Apr 13, 2011 | By Edvard Csanyi
IEC Standards
EN61800-3 (IEC1800-3) – Adjustable speed electrical power drive systems
The countries of the European Economic Area (EEA) have agreed on common minimum regulatory requirements in order to ensure the free movement of products within the EEA. The CE marking… Read more
Jan 14, 2011 | By Edvard Csanyi
Power Substation
Establishing New Power Substation
The construction of new substations and the expansion of existing facilities are common place projects in electric utilities. However, due to the complexity, very few utility employees are familiar with… Read more
Dec 20, 2010 | By Edvard Csanyi
Cables
Shielding Of Power Cables
Medium and high-voltage power cables, in circuits over 2000 volts, usually have a shield layer of copper or aluminum tape or conducting polymer. If an unshielded insulated cable is in… Read more
Dec 12, 2010 | By Edvard Csanyi
Technical Guide/Paper
A Complete Guide to Transmission And Distribution Electrical Engineering
A load flow analysis allows identification of real and reactive power flows, voltage profiles, power factor and any overloads in the network. Once the network parameters have been entered into… Read more
Dec 08, 2010 | By Edvard Csanyi
Technical Guide/Paper
How To Apply Capacitors To Low Voltage Power Systems
In most modern electrical distribution systems, the predominant loads are resistive and inductive. Resistive loads are incandescent lighting and resistance heating. Inductive loads are A.C. Motors, induction furnaces, transformers and… Read more
Dec 08, 2010 | By Edvard Csanyi
Energy and Power
Historical Review of Power System Stability Problems
As electric power systems have evolved over the last century, different forms of instability have emerged as being important during different periods. The methods of analysis and resolution of stability… Read more
Dec 08, 2010 | By Edvard Csanyi
Energy and Power
Electrical Power System Overcurrents
Electrical power systems must be designed to serve a variety of loads safely and reliably. Effective control of short-circuit current, or fault current as it is commonly called, is a… Read more
Nov 27, 2010 | By Edvard Csanyi
Energy and Power
The Need for Reactive Power Compensation
Except in a very few special situations, electrical energy is generated, transmitted, distributed, and utilized as alternating current (AC). However, alternating current has several distinct disadvantages. One of these is… Read more
Nov 19, 2010 | By Edvard Csanyi
Technical Guide/Paper
Maximum Power Transfer Theorem
The Maximum Power Transfer Theorem is not so much a means of analysis as it is an aid to system design. Simply stated, the maximum amount of power will be… Read more
Oct 31, 2010 | By Edvard Csanyi
Technical Guide/Paper
Selecting Energy Efficient Distribution Transformers
Transformer losses can be divided into two main components: no-load losses and load losses. These types of losses are common to all types of transformers, regardless of transformer application or… Read more
Oct 03, 2010 | By electrowsky
Technical Guide/Paper
Power Transformer Maintenance And Acceptance Testing
This manual contains a generalized overview of the fundamentals of transformer theory and operation. The transformer is one of the most reliable pieces of electrical distribution equipment. It has no… Read more
Oct 03, 2010 | By electrowsky
