In this article, we embark on a journey through various components commonly found in various electrical diagrams, control and protection schematics, shedding light on their functions, symbols, and significance in... Read more
The post A journey through components commonly found in control and protection schematics appeared first on EEP - Electrical Engineering Portal.
To ensure the substation is run efficiently, a control and monitoring systems are needed. These systems should display the current status of all plant equipment, including alarms and secondary system... Read more
The post Substation control and monitoring systems: The eyes and ears of every power system appeared first on EEP - Electrical Engineering Portal.
Electrical systems normally use current and voltage transformers for protection and measurement purposes. They represent the power system’s eyes and ears, and it’s essential to fully understand how they work,... Read more
The post What steps should be taken to avoid choosing the incorrect current and voltage transformers? appeared first on EEP - Electrical Engineering Portal.
Relay protection and the whole bunch of protection system engineering around the substation are quite interesting from the point of view of creativity. The Control and Protection System technology in... Read more
The post Practical guidelines for protection system engineering appeared first on EEP - Electrical Engineering Portal.
This article delves into the realm of pole discrepancy in high voltage circuit breakers, shedding light on its mechanisms, applications, and the pivotal role it plays in enhancing system reliability.... Read more
The post Intricacies of a breaker pole discrepancy and its implications for substation operation appeared first on EEP - Electrical Engineering Portal.
A local control cabinet (LCC) is commonly installed at each bay location to house the wiring of the GIS bay circuits and connect it to the substation control room. The... Read more
The post The Brain of a Gas-Insulated Switchgear (GIS): The Bay Local Control Cabinet (LCC) appeared first on EEP - Electrical Engineering Portal.
Terminals and other connecting elements, such as CT/VT shorting and isolating links, test blocks, and earthlings, often need to be better understood in analysing wiring diagrams and schematics. This can... Read more
The post Often wrongly interpreted: Terminals, isolating links and bars in wiring diagrams and schematics appeared first on EEP - Electrical Engineering Portal.
This technical article delves into the necessity of Standard Operating Procedures (SOPs) at GIS substations, emphasizing the importance of meticulous documentation, regular review, and formal approval processes to ensure that... Read more
The post Standard Operating Procedures (SOPs) for GIS Substations You MUST Fully Respect appeared first on EEP - Electrical Engineering Portal.
This article aims to provide a comprehensive guide to the standard operating procedures (SOPs) for the isolation, maintenance, and restoration of a 132kV GIS Transformer Bay and Line Bay. It... Read more
The post How to: Isolation, maintenance, and restoration of a 132kV GIS Transformer Bay and Line Bay appeared first on EEP - Electrical Engineering Portal.
This article aims to cover the activity of electrical commissioning. Such a task in its entirety would be immense. Commissioning can mean many things in different instances. This article aims... Read more
The post The Challenging Job of an Electrical Commissioning Engineer (Activities and Real World Examples) appeared first on EEP - Electrical Engineering Portal.
Substation earthing, or grounding, is essential for electrical safety and reliability in substations, which are critical nodes in the power distribution network. Proper earthing ensures safe dissipation of fault currents... Read more
The post Mechanical Check, Visual Inspection and Electrical Test of the Substation Grounding System (1) appeared first on EEP - Electrical Engineering Portal.
At the beginning of my career in 2005, I had the opportunity to work at a 500kV substation with the National Transmission and Dispatch Company in Pakistan. During this time,... Read more
The post Mechanical Check, Visual Inspection and Electrical Test of the Substation Grounding System (2) appeared first on EEP - Electrical Engineering Portal.
The objective of the site inspection and test plan for testing and commissioning is to establish a comprehensive framework for conducting site testing and commissioning activities. It’s as simple as... Read more
The post Dos and don’ts in site testing and commissioning distribution and transmission plants appeared first on EEP - Electrical Engineering Portal.
Utilities are under intense pressure to maximize the use of their current transformer asset base in order to keep rates down while yet providing excellent reliability. In order to achieve... Read more
The post Managing power transformers in service: The most important economic aspects appeared first on EEP - Electrical Engineering Portal.
With the exception of SF6-to-air bushings terminals, all active portions of gas-insulated switchgear (GIS) are contained within grounded enclosures, which means that they are not susceptible to inadvertent contact. This... Read more
The post Practical lesson in grounding and bonding of Gas-Insulated Switchgear (GIS) appeared first on EEP - Electrical Engineering Portal.
It is essential that the electrical engineers, or operators who will be in charge of switching, isolating, and earthing operations of the switchgear have a good understanding of the rules... Read more
The post Electrical thumb rules for switching, isolating and earthing appeared first on EEP - Electrical Engineering Portal.
Generator field winding is an integral part of the generator set which is responsible for generating the magnetic field that induces the stator emf when the rotor rotates. Regulation of... Read more
The post Failures, Testing and Protections Associated with Field Winding of a Generator appeared first on EEP - Electrical Engineering Portal.
An increasing number of substations globally are aging, while the construction of new ones is hindered by competitive limitations, rigorous environmental rules, and community acceptance issues. Simultaneously, the demand for electricity is consistently escalating, resulting in increased short circuit levels... Read more
The post Bringing new life to an old Air-Insulated Substation (AIS) appeared first on EEP - Electrical Engineering Portal.
This discussion will focus on the on-site overhauling of a gas-powered generator, detailing the essential procedures for its enhancement. It is a common practice for utilities to test electrical assets periodically after a certain interval of time mainly as part... Read more
The post Maintenance Practices to be Followed for On-Site Generator Overhauling appeared first on EEP - Electrical Engineering Portal.
Phase sequence or phase rotation is one of the most confusing concepts in the electrical engineering. It is often confused with motor rotation. For instance, one would say: “If it doesn’t turn the way you want it, just rewire two... Read more
The post The issue of a proper phase sequence (CW or CCW) on electric motors and generators appeared first on EEP - Electrical Engineering Portal.
