Power Substation
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Top ten software for electrical design, analysis and simulation of T&D networks
The importance of stability and maintaining the power quality of the electricity transmission and distribution (T&D) networks necessitates a thorough examination of all aspects of the design, analysis, and simulation of the transmission and distribution networks by all persons associated…...
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Oct 10, 2019 | By Ali Bahonar
Energy and Power
Medium voltage switches for isolation and earthing (applications and IEC 62271 ratings)
Medium voltage switches for use on 1-52kV indoor systems are predominantly used for isolation and earthing. Although the majority of these switches are air insulated, gas insulated (SF6) combination switches are available, which are designed for load and fault current… Read more
Oct 09, 2019 | By Edvard Csanyi
Energy and Power
The art of achieving selectivity between incoming feeders connected in parallel
Calculating selectivity between incoming low voltage feeders connected in parallel is never an easy task. In parallel operation of two, three and more transformers on a common busbar, the partial short-circuit currents flowing in the individual incoming feeders add up… Read more
Oct 07, 2019 | By Edvard Csanyi
Low Voltage
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Automatic transfer switch between three power sources (analysis of schemes)
When a switchboard can be supplied from two or more different sources, transfer between those sources can be done manually or automatically. This kind of configuration is usually designed when reliability and quality of power supply need to be provided…....
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Oct 03, 2019 | By Miodrag Kokotovic
Testing and Commissioning
Pre-commissioning checks and tests of high voltage current transformers (CTs)
Once erection is completed, various pre-commissioning checks and tests are performed to ensure the healthiness of the switchyard equipment prior to their energization. This technical article explains various major electrical tests applicable for current transformers (CTs). Let’s name these tests… Read more
Oct 02, 2019 | By Edvard Csanyi
Energy and Power
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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Good practice rules for electromagnetic compatibility (EMC) of LV conductors
The search for an overall optimization of the installation with regard to electromagnetic compatibility (EMC) and its ability to function without suffering or emitting excessive interference, comes via a set of good practices, which are often simple and based on…...
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Sep 30, 2019 | By Edvard Csanyi
Maintenance
Protective grounding requirements for transmission and distribution lines
This technical article covers protective grounding requirements for steel tower and wood pole supported transmission and distribution lines, and insulated power cables. Protective grounds must be installed so all phases of lines or cable are visibly and effectively bonded together… Read more
Sep 25, 2019 | By Edvard Csanyi
Low Voltage
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Things you MUST know when commissioning low voltage switchgear and circuit breakers
Purchasing low voltage switchgear is not that easy, it’s not like purchasing a new TV or laptop. You have to be very experienced and deadly serious when specifying and ordering LV switchgear, but also during the commissioning and testing. This…...
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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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Sep 23, 2019 | By Edvard Csanyi
Energy and Power
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Why we find temperature so important everywhere in electrical engineering?
The purpose of this article is to underline and illustrate the importance of temperature for various aspects of electrical engineering. This is one of the crucial engineering issues from the very beginning in design and procurement stage, later during exploitation,…...
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Sep 20, 2019 | By Miodrag Kokotovic
High Voltage
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Major components you can spot while looking at HV/EHV GIS (Gas-insulated switchgear)
Gas-insulated switchgear (GIS) is a piece of high voltage equipment that is being constantly developed day by day. The basics of GIS technology is more or less the same, but everything else under the hood is improved a lot comparing…...
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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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Sep 18, 2019 | By Edvard Csanyi
Energy and Power
Operating centralized automatic compensation systems when supplying linear loads
For energy-efficient operation of decentralized multiply-fed industrial networks, each load-centre substation must have its own centralized reactive-power compensation system for automatic PF correction. The automatic reactive-power compensation systems used for load-related control of the reactive power comprise a PF controller… Read more
Sep 16, 2019 | By Edvard Csanyi
Power Substation
Testing and commissioning of HV power transformers, circuit breakers, CTs and VTs
As you already know, substations are the points for controlling the supply of power on different routes by means of various equipment such as power transformers, circuit breakers, CTs/VTs, compensating equipment, isolators, etc. The various circuits are joined together through… Read more
Sep 11, 2019 | By Edvard Csanyi
Protection
Interference and noise affecting transmission media in protection signalling
The transmission media that provide the communication links involved in relay protection signalling are private pilots, rented pilots or channels, power line carrier, radio and the newest and the most advanced technology – optical fibres. Historically, pilot wires and channels… Read more
Sep 09, 2019 | By Edvard Csanyi
Metering
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Field devices and signals used for LV SCADA operations
At low voltage level, SCADA applications are usually used for process control and monitoring of equipment. Furthermore, incoming circuit breakers or switch disconnectors inside large LV switchboards may also be operated remotely, by the command given from the SCADA working…...
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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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Sep 05, 2019 | By Miodrag Kokotovic
Energy and Power
The facts about modern rotary and static uninterruptible power systems (UPS)
This technical article covers the brief explanation of the power quality issues with the reference to the past as well as two main types of modern UPS systems – rotary and static uninterruptible power systems, their characteristics, advantages and disadvantages…. Read more
Sep 04, 2019 | By Edvard Csanyi
