Power Substation
The essentials of necessary auxiliary relays in tripping and control applications
Tripping circuit breakers and operating alarms in control and protection applications usually require more than one relay contact. Tripping relays are used to multiply the number of contacts available, provide isolation between the source and system operating element and meet… Read more
Feb 28, 2022 | By Edvard Csanyi
Power Substation
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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
Energy and Power
Emergency breaking, stop and isolation intended to eliminate danger as quickly as possible
As their name indicates, emergency operations are intended to eliminate, as quickly as possible, a danger that occurs unexpectedly. The emergency break is designed to cut off the electrical power, whereas the emergency stop takes account of the danger of… Read more
Feb 14, 2022 | By Edvard Csanyi
Power Substation
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The limit of the substation noise level over which it begins to irritate the community
This article will try to shed some light on the most common noise-related concerns associated with existing substations and provide mitigation methods to address these concerns. The continuous noise created by the operation of power transformers and reactors, as well…...
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Jan 24, 2022 | By Edvard Csanyi
Energy and Power
Learn how to prevent unplanned downtime and keep critical operations up and running
Power availability and reliability is a persistent problem and no matter the industry, or type of facility you run, downtime presents a costly risk to your operations and bottom line. Detecting electrical system vulnerabilities to prevent potential issues while planning… Read more
Jan 17, 2022 | By Edvard Csanyi
Power Substation
Differential protection (87R/∆I) applied to bus connected oil-immersed shunt reactors
Differential protection is the most commonly applied protection function for bus-connected oil-immersed shunt reactors. The function offers instantaneous protection for internal phase to phase and phase to ground faults. Internal in this context means faults located in the area between… Read more
Jan 03, 2022 | By Edvard Csanyi
Premium Content
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Where and how to find the root cause of a power transformer failure (troubleshooting guide)
When Whatsapp, Facebook, or Gmail is down, it’s manageable, but if transformers fail, the entire business comes to a standstill. No-power-no-business transformers, as the heart of every substation, impact industries and affect the country’s economy and have social and political…...
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Dec 27, 2021 | By Rahmatullah Alam
Electric Motor
Eight most damaging overvoltages in industrial systems (root causes and prevention)
Electric insulation in energized systems is continuously under stress. Electric systems are subject to disturbances of many types which unavoidably produce overvoltages. However, the application engineer has at his command many system design principles which will greatly curb the magnitude… Read more
Dec 20, 2021 | By Edvard Csanyi
Energy and Power
How to modernize a power system while carrying the cost (examples of existing plant)
Existing power systems are often modernized although there is no expansion involved at the moment. The switchgear may be obsolete, representing a real hazard to the operating personnel and property. The circuit breakers may also have an inadequate interrupting capacity…. Read more
Dec 06, 2021 | By Edvard Csanyi
Power Substation
How breaker failure relaying works?
Primary relays operate for a fault in their zone of protection in the shortest time and remove the fewest system elements to clear the fault. On the other hand, backup relays operate in the event that the primary relays fail…. Read more
Oct 15, 2021 | By Edvard Csanyi
Power Substation
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AC substation detailed design guidelines: Best practice, dos and don’ts
Substation design is a very complex process that involves many professional engineers in many different areas. However, there are always few people who are leading the whole design process both from the technical and economical aspects. This technical article covers…...
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Oct 11, 2021 | By Edvard Csanyi
High Voltage
Design issues in HV busbar protection systems (substation topology and DC power supply)
This technical article discusses criteria and requirements for designing protection systems for busbars in HV/EHV networks. One of the most critical requirements is reliable busbar relay protection to assure power system integrity during fault conditions. This requirement is further emphasized because… Read more
Sep 27, 2021 | By Edvard Csanyi
Energy Generation
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Four abnormal operating conditions of a generator that could shut down the power plant
To be clear, the generator is very simple in construction and yet very complicated in operation rotating equipment. In a power plant, a generator cannot be considered in isolation because of a very large number of other equipment connected to…...
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Sep 06, 2021 | By Edvard Csanyi
Energy and Power
Isolation power solutions for ultimate power availability, efficiency and safety in hospitals
Things are changing fast, really fast. Technology we used a few years ago is now obsolete, and if you take a look for a second – it’s always about power availability, efficiency, and safety. This technical article deals with Schneider… Read more
Aug 04, 2021 | By Edvard Csanyi
Medium Voltage
Special measures needed for switching MV capacitor banks and filter circuits
Switching of medium voltage capacitor banks and filter circuits poses special demands on the circuit-breaker. Potentially critical impacts are the inrush current and the stress of the recovery voltage. This technical article deals with the requirements of capacitor banks without… Read more
Aug 02, 2021 | By Edvard Csanyi
