Power Substation
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Single phase and three phase capacitive-load switching in transmission & distribution systems
The interruption of capacitive currents is a usual switching case, unlike the making and breaking of fault currents. The usual cases, in which a capacitive current is switched, are switching of unloaded overhead transmission lines, local substation components, cables, capacitor…...
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Aug 30, 2018 | By Edvard Csanyi
Power Substation
The four most common switchgear-based substation types
The subject of this article is to discuss few most common types of MV/HV power substations based on the type of distribution switchgear, which can be seen in every distribution network. There are a number of methods of construction of… Read more
Aug 29, 2018 | By Edvard Csanyi
Power Substation
The zone selective interlocking logic of protection relays
This function significantly reduces the tripping time of the circuit breakers closest to the source. It can be used for zone selective interlocking (ZSI) in closed ring networks. It applies to the phase overcurrent 50/51, directional phase overcurrent 67, ground fault… Read more
Aug 27, 2018 | By Edvard Csanyi
Power Substation
Protocols applied for time synchronization in a digital substation automation
Substation automation is a mission-critical task and electric power utilities must synchronize across large-scale distributed power grid switches in a substation to enable smooth power transfer and maintain power supply integrity. Precise time synchronization is therefore required to ensure that… Read more
Aug 22, 2018 | By Edvard Csanyi
Energy and Power
The study of harmonics and LV energy compensation
The harmonic currents are mainly down to the nonlinear loads in the installations. The most frequent harmonic sources are linked to the use of electric arcs (welding, arc furnaces, discharge lamps, etc.) and to magnetic machines. Power electronics (converters, variable… Read more
Aug 20, 2018 | By Edvard Csanyi
Electric Motor
Practical tips on how not to burnout an electric motor
There are many reasons why an electric motor could start heating up. For example, when another starting duty is used then the informed one on the motor nameplate may result in motor overheating and consequent motor damage. Due to high… Read more
Aug 15, 2018 | By Edvard Csanyi
Protection
The fundamentals of protection relay co-ordination and time/current grading principles
Transmission and distribution systems are exposed to overcurrent flow into their elements. In an electric power system, overcurrent or excess current is a situation where a larger than intended electric current exists through a conductor, leading to excessive generation of… Read more
Aug 13, 2018 | By Edvard Csanyi
Energy and Power
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The technology behind distributed control system (DCS) in a thermal power plant
A DCS is the heart of a thermal power plant’s instrumentation and control systems. DCS stands for ‘distributed control system’, and the term ‘distributed’ means that several processors are operating together. This is usually achieved by dedicating tasks to different…...
Membership Upgrade Required
This content is not available in your premium membership plan. Please upgrade your plan in order to access this content. You can choose an annually based Basic, Pro, or Enterprise membership plan. Subscribe and enjoy studying specialized technical articles, online video courses, electrical engineering guides, and papers.With EEP's premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.
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Aug 09, 2018 | By Edvard Csanyi
Energy and Power
8 practical applications of testing ground system using clamp-on tester
First of all, it is extremely important that the operator/engineer understand the ground system that is being tested. The clamp-on measurement works well in many situations, but it has limitations and is not applicable in some configurations. Clamp-on ground testing… Read more
Aug 08, 2018 | By Edvard Csanyi
Energy and Power
Generator earthing and stator earth fault protection
Generating unit is a pretty complex system made up of the generator stator winding, its transformer and unit transformer (if present), the rotor with its field winding and excitation system, and the prime mover with its associated auxiliaries. Many different… Read more
Aug 06, 2018 | By Edvard Csanyi
Energy and Power
An algorithmic approach to space optimized design of modular switchboards
Modular Switchboards are used for electrical power distribution in industrial and commercial locations. It is often important to know the dimensions of the Switchboards beforehand, especially in case of large installations like a Power Plant. The details are used for… Read more
Aug 01, 2018 | By Apurva Singh
