Power Substation
The essentials of electrical distribution systems every engineer should know
Electrical distribution systems are an essential part of the electrical power system. In order to transfer electrical power from an alternating current (AC) or a direct current (DC) source to the place where it will be used, some type of… Read more
Sep 03, 2018 | By Edvard Csanyi
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
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
Power Substation
The network of data acquisition in a digital substation
The data acquisition in electric power system is very important and includes a lot of areas such as substation. Digital substation is one of the key parts of smart grid and the network of process layer is an important foundation… Read more
Jul 30, 2018 | By Edvard Csanyi
Medium Voltage
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Nine topologies of medium voltage ring-main systems you should know about
Power systems are constructed can be operated as radial systems, ring-main systems or meshed systems. This technical article deals with nine most common topologies of ring-main systems, their characteristics and applications. Ring-main systems are common in the medium voltage range…....
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Jul 27, 2018 | By Edvard Csanyi
High Voltage
Concerns over electromagnetic fields below three-phase high voltage overhead lines
In relation with the increased use of mobile phones during the last decades more concerns about possible harmful effects of electro-magnetic fields to human beings have been expressed. Overhead lines cause both electric and magnetic fields. An important difference between… Read more
Jul 16, 2018 | By Edvard Csanyi
Power Substation
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Reasons and duties for switching in power transmission and distribution systems
The purpose of a power system is to transport and distribute the electric energy generated in the power plants to the consumers in a safe and reliable way. Generators take care of the conversion of mechanical energy into electric energy,…...
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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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Jul 12, 2018 | By Edvard Csanyi
Power Substation
How Arc suppression reactors (Earth fault neutralisers or Petersen-coils) work?
Arc-suppression reactors are also named earth fault neutralisers or Petersen-coils after W. Petersen who launched the idea of this particular reactor application early in the previous century. In high voltage power systems single-phase earth faults may take place. These may… Read more
Jun 25, 2018 | By Edvard Csanyi
Protection
Communications in power system protection (medias, protocols and network topologies)
A communication system consists of a transmitter, a receiver and communication channels. Type of medias and network topologies in communications provide different opportunities to advance the speed, security, dependability, and sensitivity of protection relays. There are a several types of… Read more
Jun 04, 2018 | By Edvard Csanyi
Protection
What’s really important to achieve in transmission line protection relaying?
As you already know, the real purpose of transmission line protection is to detect faults or abnormal operating conditions and to initiate corrective action. Protective relays must be able to evaluate a lot of parameters to choose and establish right… Read more
May 21, 2018 | By Edvard Csanyi
Power Substation
The Most Used Outdoor Switchyard Layouts You Should Know About
The arrangement of outdoor switchgear layouts and installations is mostly influenced by economic considerations, in particular adaptation to the space available and the operational requirements of reliability and ease of supervision. Contents: Switchyard layout in general Selected layout examples: Low… Read more
May 07, 2018 | By Edvard Csanyi
Cables
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High Voltage Cables In a Nutshell (Technology, Bonding, Installation and Service)
Differences between the electrical characteristics of overhead transmission lines and high voltage AC cables are fundamental and must be considered. This article gives a brief introduction to cable technology, with focus on the topics which must be considered when designing…...
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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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May 04, 2018 | By Edvard Csanyi
Transformers
Where and Why Do We Use Phase-Shifting Transformers?
Because of the predominantly inductive character of the power system, an active power flow between source and load must be accomplished with a phase lag between the terminals. Phase-shifting transformers are a preferred tool to achieve this goal. Two principal… Read more
Apr 23, 2018 | By Edvard Csanyi
