What do you need to know about designing a switchyard? Well, to simplify, you need a lot and it’s not that simple. Switchyards need to be designed with respect to... Read more
The post The facts about switchyards, incoming and outgoing feeder connections, CTs and VTs appeared first on EEP - Electrical Engineering Portal.
Erection and commissioning of MV/HV switchgear are quite complex and full of tiny little details that can easily make your project slow down or even stop. Not to mention deadlines... Read more
The post Guide to erection and commissioning of MV/HV switchgears (Inspection, installation and assembly) appeared first on EEP - Electrical Engineering Portal.
This article continues the series of articles dedicated to erection, testing and commissioning of MV/HV switchgears by describing the most important precautions and recommendations in various procedures and steps. Starting... Read more
The post Testing and commissioning of MV/HV switchgears (wiring, final inspection and checks) appeared first on EEP - Electrical Engineering Portal.
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... Read more
The post Improving the cybersecurity of substations using intrusion detection appeared first on EEP - Electrical Engineering Portal.
Medium voltage substations fall within the sub-transmission power system category, which feeds the bulk consumers directly or facilitates the secondary and tertiary distribution to small industrial and household consumers over... Read more
The post My experience in drafting the layout & arrangement drawing of 33/11 kV distribution substation appeared first on EEP - Electrical Engineering Portal.
Control circuits are vital to the operation of medium voltage switchgear. The integrity of these control circuits is essential to the switchgear’s proper operation, so commissioning and maintenance activities records... Read more
The post Mastering switchgear control circuits – AC/DC circuits and circuit breaker closing circuit appeared first on EEP - Electrical Engineering Portal.
In the last article, an introductory part of the switchgear control circuits, including DC/AC circuit and breaker closing circuit, was discussed thoroughly. This article continues the discussion with a breaker... Read more
The post Mastering switchgear control circuits: trip, BCPU and alarm, indication, and interlock circuits appeared first on EEP - Electrical Engineering Portal.
The first protection devices based on microprocessors were employed in 1985. The widespread acceptance of numerical technology by the customer and the experiences of the user helped in developing the... Read more
The post The facts about numerical relays that every electrical engineer should know appeared first on EEP - Electrical Engineering Portal.
Selectivity study of a power system is usually considered as an advanced job for advanced engineers, mostly relay protection engineers. This article will try to get close to a few important selectivity principles in a... Read more
The post Four ways of ensuring proper selectivity in MV/HV electrical network protection appeared first on EEP - Electrical Engineering Portal.
A gas-insulated substation (GIS) is usually utilized in high voltage applications in which all conductive parts are encapsulated in sealed cylinders with SF6 as the insulating medium. The air-insulated substation (AIS), on the other hand,... Read more
The post Mastering GIS control circuits: AC/DC auxiliary circuits and circuit breaker closing circuit appeared first on EEP - Electrical Engineering Portal.
Previously, an introductory part of the GIS and its components were discussed to pave the way for the GIS control circuits. Moreover, the single-line diagram example for a double-bus and a single breaker clarifies several... Read more
The post Learn how to read and analyze control circuits of MV gas insulated switchgear (GIS) appeared first on EEP - Electrical Engineering Portal.
Electrical engineers working on project execution know that switchgear erection brings many challenges, no matter the voltage level. The switchgear cannot always be assembled in the factory and shipped to... Read more
The post Recommendations for the successful erection of medium voltage switchgear appeared first on EEP - Electrical Engineering Portal.
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... Read more
The post Functional testing of IEC 61850 based Substation Automation Systems appeared first on EEP - Electrical Engineering Portal.
An auxiliary DC power system that consists of a charger, battery bank, DC distribution system, and monitoring system is a critical part of the primary/secondary substation. It is directly associated... Read more
The post Sizing of 110V DC charger for MV panels – Auxiliary power supply in power substations appeared first on EEP - Electrical Engineering Portal.
This technical article deals with transformer failure incidents due to nuisance tripping caused by various design flaws, operational conditions, or improper protection relay settings. The focus is on differential protection... Read more
The post The mystery of nuisance tripping incidents in transformer protection that worry engineers appeared first on EEP - Electrical Engineering Portal.
Medium voltage substations fall within the sub-transmission power system category, which feeds the bulk consumers directly or facilitates the secondary and tertiary distribution to small industrial and household consumers over... Read more
The post My experience in drafting the layout & arrangement drawing of 33/11 kV distribution substation appeared first on EEP - Electrical Engineering Portal.
This technical article deals with transformer failure incidents due to nuisance tripping caused by various design flaws, operational conditions, or improper protection relay settings. The focus is on differential protection... Read more
The post The mystery of nuisance tripping incidents in transformer protection that worry engineers appeared first on EEP - Electrical Engineering Portal.
This technical article will shed some light on fundamental schemes and arrangements of connections for supply at generator voltage, higher than generated voltage, and a few basic transmission schemes. It... Read more
The post Fundamental electrical schemes of connections for supply at generator voltage and higher appeared first on EEP - Electrical Engineering Portal.
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... Read more
The post My experience in drafting the layout of an LV switchgear (equipment, inside installations) appeared first on EEP - Electrical Engineering Portal.
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,... Read more
The post My advice in successful reading single-line, schematic, P&ID, logic, and wiring diagrams appeared first on EEP - Electrical Engineering Portal.
