Lessons I learned during the start-up of an MV switchgear
In the world of electrical engineering, a term start-up assumes all works which are necessary to be done for putting in operation already tested switchgear, as close as possible installed in position and ambient defined by design documentation and employer’s…...
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Oct 31, 2019 | By Miodrag Kokotovic
Reactive power compensation in electrical plants with generators
Compensation of reactive power applied in buildings or small facilities operates in the first and second quadrants of the coordinate system. Increasingly, complex industrial plants, for example plants burning wood dust, are using generators driven by steam engines running parallel… Read more
Oct 30, 2019 | By Edvard Csanyi
Principles and applications of busbar protection schemes (you SHOULD know about)
In the olden days, the clearance of busbar faults was done by time-delayed distance relays or overcurrent relays, resulting in an extension of fault for a longer duration of time. In the present day’s networks, which are highly interconnected, having… Read more
Oct 28, 2019 | By Edvard Csanyi
Power supply conceptual schemes for small, medium-sized and large industrial plants
This technical article presents preferred system structures and power supply concepts for small, medium-sized and large industrial plants that meet the different requirements for power demand and supply quality. For each plant size, Siemens’s LV/MV distribution switchgear and distribution transformer…...
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Oct 22, 2019 | By Edvard Csanyi
Standard cubicle configurations for a medium voltage metal-enclosed switchgear
This technical article will shed some light on the standard design of medium voltage metal-enclosed switchgear cubicles in terms of enclosure configurations as well as the characteristics of busbar system. Article explains the following cubicles types: incomer feeder, direct incomer,… Read more
Oct 21, 2019 | By Edvard Csanyi
IED (Intelligent Electronic Device) advanced functions that make our life better
Intelligent electronic devices (IEDs) have been deployed extensively in power automation systems recently, and the shift from RTUs to IEDs is evident due to the integration and interoperability features of the IEDs. This technical article briefly explains the IED advanced… Read more
Oct 16, 2019 | By Edvard Csanyi
Occurrence and detection of an earth fault in MV power systems with isolated neutral
The mode of operation of an MV industrial power system that is galvanically isolated from the public power supply is determined by the method of neutral earthing on the secondary side of the transfer transformer. The following methods of neutral… Read more
Oct 14, 2019 | By Edvard Csanyi
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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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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Oct 10, 2019 | By Ali Bahonar
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
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
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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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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Oct 03, 2019 | By Miodrag Kokotovic
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