Tricks in designing and analyzing schematics and diagrams of high voltage substations
High voltage power substations are complex networks of power and control connections, represented by design elements like- Single Line Diagrams, layout and block diagrams, schematics, logic diagrams, schedules, and so many more. Wiring diagrams and schematics, in a sense, are…...
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Aug 08, 2022 | By Bishal Lamichhane
Breaker failure protection applications of modern numerical distance relays
Modern numerical distance relays are equipped with a wide range of protection features, including overcurrent, overvoltage, undervoltage, underfrequency, overfrequency, breaker failure, synchronism check, power swing blocking and tripping, pilot protection schemes, digital relay-to-relay communications capability, logic programmability, and sophisticated math… Read more
Aug 01, 2022 | By Edvard Csanyi
What will happen to digital substations once the internet drops dead for good?
Here at EEP, we have already covered multiple aspects of digital substations, ranging from design, upgradations, and whatnot. We may continue writing till eternity and still be left playing catchups with the latest addition to advancements in power systems design…...
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Jun 27, 2022 | By Bishal Lamichhane
Hints for a good design of an optical communication system for a transmission line network
Communication networks are an integral part of interconnected transmission lines in a power grid, analogous to the spinal cord for control signal and information exchange among substations, data hubs, and load dispatch centers. This article covers the major trend and…...
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May 09, 2022 | By Bishal Lamichhane
How to use Lockout Relay (master trip relay) in substation protection and control design
Lockouts and auto-reclosures are apprentices of power systems protection that have long served to regulate power supply and safeguard important components from probable catastrophes. But are we taking them seriously enough? In implementing the lockout features, apart from their placements…...
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Feb 21, 2022 | By Bishal Lamichhane
Design guide to digital control and communication systems in modern substations
The power system has advanced pretty ahead of days when the power supply mechanism was an enigma, and lighting a bulb was the ultimate goal. Along with the advanced power utilization, the modern power supply system demands control and monitoring…...
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Jan 10, 2022 | By Bishal Lamichhane
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
Functional testing of IEC 61850 based Substation Automation Systems
Testing the protection element settings of IEDs and protection schemes are well established practices when testing a Protection, Automation and Control (PAC) system. Tools and methods are available to support standardized and automated protection testing routines. Test plans can be… Read more
Feb 08, 2021 | By Christian B. and Eugenio C. at OMICRON
Improving the cybersecurity of substations using intrusion detection
Multiple layers are necessary to ensure the cybersecurity of substations. Cryptography allows authentication of devices, but not all attacks can be prevented with these measures. Firewalls and “air gaps” can be circumvented through existing remote access tunnels, or through maintenance… Read more
Nov 16, 2020 | By Andreas Klien
How to convert an old substation into a digital substation?
Typically, substations comprise power elements like power transformers, switches, busbars, etc. and control elements like protection units, metering units, RTUs, SCADA, etc. While the power elements are mandatory requirements, the control elements vary as per the function of a substation…...
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Sep 07, 2020 | By Bishal Lamichhane
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
Integration of IEC 61850 in power plant automation, control, and protection systems
IEC 61850 is much more than a protocol. The general scope of the standard is designed to support the communication of all functions being performed in a substation. Its main goal is interoperability and this is the ability for IEDs… Read more
May 29, 2019 | By Edvard Csanyi
Remote control systems and communication devices in secondary substations
This technical article deals with the devices that make possible the interface with the primary process (e.g. cables and switchgear) in a secondary substation from a central point, like central control databases/systems that facilitate all kinds of stakeholders with data…....
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Mar 25, 2019 | By Edvard Csanyi
Why more and more automation in power distribution? Aren’t we already automated?
One may wonder why is everybody talking more and more about automation in power distribution. Aren’t we already automated? Well, we are not. It can always be better, faster, with more possibilities and more optimized. This is something that pushes…...
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Feb 28, 2019 | By Edvard Csanyi
Six steps for specifying IEC 61850 and substation automation requirements
It is not easy to read the IEC 61850 documents or to comprehend how the pieces all work together. When implementing systems as complex and as new as substation automation, substation engineers will need to work closely together with the… Read more
Feb 06, 2019 | By Edvard Csanyi
