Power Substation
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Schematics and docs needed for communication systems of substation protective relaying system
Communication systems of electric utilities have become increasingly critical to electric system protection, operation, and maintenance. For fast tripping and clearing of system faults, communication-aided relaying has become a common protection scheme, particularly in line protection. Control centers depend on…...
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Jun 09, 2021 | By Edvard Csanyi
High Voltage
Parallel switching phenomenon when MV/HV circuit breakers interrupt a shared fault current
Parallel switching occurs when two or more circuit-breakers are tripped to interrupt a shared fault current. This is typically the case for such bus arrangements as a double breaker, breaker-and-a-half, breaker-and-a-third, and ring buses. Ideally, all of the circuit-breakers should… Read more
Jun 07, 2021 | By Edvard Csanyi
Low Voltage
Distribution earthing systems in LV/MV networks (design instructions and precautions)
The electrical earthing system is designed to provide safe and correct operation of the network under normal, earth fault, and transient conditions. During earth fault conditions, large fault currents may flow via the general mass of the earth en route… Read more
Jun 02, 2021 | By Edvard Csanyi
Premium Content
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Power transformers testing and commissioning at the site (instructions and precautions)
Since I started the commissioning work 30 years back, transformer commissioning consisted of more tests, but nowadays, the number of tests has been reduced due to costs and time-saving. This article will go through complete testing that needs to be…...
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May 31, 2021 | By Omar Salah
Power Substation
The essentials of overcurrent protection you are not allowed to forget (types and principles)
Relay protection is nowadays completely digitalized and very sophisticated; there is no doubt about that. But, do electrical engineers really understand what they do when setting parameters and navigate through endless menus on a relay? Most engineers do know, of… Read more
May 24, 2021 | By Edvard Csanyi
Low Voltage
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Dos and don’ts in operating LV/MV circuit breakers, relays, disconnectors and fuses
Typically, protecting an electrical system, low-voltage, medium-voltage, or high-voltage, whichever it is, does not entirely depend upon a single component. The protection system is often a coordinated combination of multiple switching and protection units working in tandem to acquire the…...
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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 17, 2021 | By Bishal Lamichhane
Power Substation
The most common failure modes of electrical equipment in distribution systems
Each piece of electrical equipment on a distribution system has a probability of failing. When first installed, a piece of equipment can fail due to poor manufacturing, damage during shipping, or improper installation. Healthy equipment can fail due to extreme… Read more
May 10, 2021 | By Edvard Csanyi
Premium Content
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My worst experience in testing and commissioning power transformers (and how I fixed things up)
Reliable and secure electric power delivery is dependent on power transformers’ reliability that is enhanced significantly by sound test plans. These test plans shall be prepared by both manufacturers and end-users to develop thorough and effective plans and specifications. The…...
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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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Apr 29, 2021 | By Salem Alshahrani
Cables
Dos, don’ts and precautions in wiring cables and conductors inside low-voltage switchboard
To be clear from the very beginning of this article, there is no standard model for wiring low voltage switchboards and panelboards. However, for the wide variety of installations and ranges of power ratings, there are local work practices, regulations… Read more
Apr 26, 2021 | By Edvard Csanyi
Low Voltage
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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Learn how to operate an unknown energized low voltage switchgear (practical experience)
Switchgear is an integral part of the electrical protection system, which is used for isolating the faulty parts as well as de-energizing the downstream equipment during maintenance or any other usages. “Energized” is the term that signifies that the component…...
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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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Apr 19, 2021 | By Bishal Lamichhane
Power Substation
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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Learn to successfully analyze single-line, schematic, P&ID, logic, and wiring diagrams
Engineering tasks require a good skill in reading and interpreting information on drawings. Engineering drawings are the industry cornerstone of conveying detailed and precise information on how to construct, troubleshoot, maintain, and operate a system. Basic requirements are needed to…...
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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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Apr 05, 2021 | By Salem Alshahrani
Electrical Lectures
Top ten courses on EEP Academy for electrical engineers, technicians and students
Learning and studying have never been easier than nowadays. Since we started the EEP Academy, there are thousands of electrical engineers, students, technicians, and many others who are literally hungry for knowledge and experience. This is where EEP’s contribution comes… Read more
Mar 31, 2021 | By Edvard Csanyi
Protection
Three basic principles of differential protection you SHOULD properly understand
The three basic principles of differential protection explained in this article, which has been known for decades, are still applicable and independent of the specific device technology. The differential protection compares the measured values with regard to magnitude and phase…. Read more
Mar 29, 2021 | By Edvard Csanyi
Low Voltage
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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Learn how to draft the layout of an LV switchgear (sizing, designing equipment, installations)
Low voltage (LV) switchgear is a broad terminology that includes a wide range of equipment like circuit breakers, switches, offload isolators, MCCBs, etc. within the 1 kV rating required to protect the LV system. The most common use of LV…...
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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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Mar 22, 2021 | By Bishal Lamichhane
Low Voltage
The essentials of automation applied to distribution systems via PLCs, SCADA, IEDs, and RTUs
Nowadays, it seems that everything we do tends to be somehow automated. The very same is happening in electrical distribution systems. The distribution system at the medium voltage (MV) or low voltage (LV) levels is designed using different structures such… Read more
Mar 15, 2021 | By Edvard Csanyi
