Energy and Power
Micro Hydro Power Plant With Automatic Frequency and Excitation Control
First of all, I am very glad to say that our project was successful. It is hydro power plant which was completed totally by our five members team namely me, Chitransh Shrivastava, Akshay Tiwari, Pranjan Lele, Pankaj Sonwane and special… Read more
Jul 19, 2013 | By Aakash Johari
Energy and Power
NEC Branch Circuit Requirements
The National Electrical Code (NEC 2011) provides guidance for electrical contractors and electricians, but it is really intended for use by governmental agencies that have legal jurisdiction over electrical installations and authorized electrical and insurance inspectors. The many mandatory chapters… Read more
Jul 15, 2013 | By Edvard Csanyi
Energy and Power
Calculation Example of Small Photovoltaic (PV) Residential Stand-Alone System
– Array Size: 10, 12-volt, 51-watt modules; Isc= 3.25 amps, Voc= 20.7 volts – Batteries: 800 amp-hours at 12 volts – Loads: 5 amps DC and 500-watt inverterwith 90% efficiency. The PV modules are mounted on the roof. Single-conductor cables… Read more
Jul 12, 2013 | By Edvard Csanyi
Electrical Lectures
Development of a Sine-Wave Output In AC Generator
The elementary AC generator (Figure 1) consists of a conductor, or loop of wire in a magnetic field that is produced by an electromagnet. The two ends of the loop are connected to slip rings, and they are in contact with two… Read more
Jul 08, 2013 | By Edvard Csanyi
Energy and Power
A Few Words About Battery Hazards and Why They Happen
Because batteries store large amounts of energy, there are certain hazards that are associated with battery operation. These hazards must be fully understood to ensure safe operation of batteries. Cell short circuits can be caused by several conditions, which include… Read more
Jul 03, 2013 | By Edvard Csanyi
Energy and Power
Surge protective categories defined by ANSI/IEEE C62.41
Three different surge protective classes or zones have been defined by ANSI/IEEE C62.41, Recommended Practice on Surge Voltages in Low Voltage Power Circuits. These classes are illustrated in the pictorial diagram Fig. 12-1. Category C (outdoors) is the region outside the… Read more
Jun 28, 2013 | By Edvard Csanyi
Energy and Power
Thinking About Security Considerations in SCADA Systems (2)
Continued from previous part: Thinking About Security Considerations in SCADA Systems (1) In this part of technical article, I will focus on various types of threats which must be considered in order to plan the security management of a SCADA… Read more
Jun 26, 2013 | By Bipul Raman
Energy and Power
Thinking About Security Considerations in SCADA Systems (1)
SCADA System can be affected by a number of threats, which may be natural or intentional. So it is very much important to focus on security aspects of SCADA Systems. In this article, I will focus on various types of threats… Read more
Jun 24, 2013 | By Bipul Raman
Electric Motor
Mysterious synchronous operation of generator solved
To many people, the operation of a synchronous generator is very mysterious and strange. Here is this huge machine which runs are a constant speed whether the 4 – 24 inch steam valves are wide open or shut tightly the machine speed is… Read more
Jun 21, 2013 | By Edvard Csanyi
Energy and Power
An Introduction To SCADA For Electrical Engineers – Beginners
It is impossible to keep control and supervision on all industrial activities manually. Some automated tool is required which can control, supervise, collect data, analyses data and generate reports. A unique solution is introduced to meet all this demand is… Read more
Jun 19, 2013 | By Bipul Raman
Energy and Power
How to calculate voltage regulation of distribution line
Introduction to voltage regulation Voltage Regulation for 11KV, 22KV, 33KV Overhead Line Permissible Voltage Regulation (As per REC) Voltage Regulation Values Required Size of Capacitor Optimum location of capacitors Voltage Rise due to Capacitor installation Calculate % Voltage Regulation of… Read more
Jun 10, 2013 | By Jignesh Parmar
Energy and Power
Impacts of Voltage Dips on Power Quality Problems
Figure 1 shows the profile of a voltage dip, together with the associated definitions. The major cause of voltage dips on a supply system is a fault on the system, that is sufficiently remote electrically that a voltage interruption does… Read more
Jun 07, 2013 | By Edvard Csanyi
Energy and Power
Transformer temperature, oil level and pressure gauges
Temperature controls are required in order to turn on and off the cooling equipment. These controls are usually combined with a visible dial-type gauge that measures ‘winding temperature’. This is really a misnomer because the gauge does not actually contact… Read more
Jun 03, 2013 | By Edvard Csanyi
Energy and Power
MCset – Air Insulated Switchgear with SF6 CB
MCset is Schneider Electric‘s AIS – Air Insulated Switchgear (indoor metal-enclosed device) intended for the MV section of HV/MV substations and high power MV/MV substations up to 24kV. Main component of MCset is circuit breaker which is SF6 type. MCset – Air… Read more
May 31, 2013 | By Edvard Csanyi
Electric Motor
Three Phenomenons In The Iron Of AC Machines
Most of our practical AC machines (motors, generators ad transformers) depend heavily on the magnetic field for operation. The core iron of the machine provides a path for the magnet field. There are a number of phenomena in the iron… Read more
May 29, 2013 | By Edvard Csanyi
