It’s not unusual to see graduates and engineers from other disciplines experience difficulties in properly interpreting the terminology used in applying relays, analyzing their performance, and designing protection systems. Actually,... Read more
The post 13 terms concerning relaying, measurements, and breakers used by protection engineers 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.
It’s always important to identify the real cause of burned windings and not just to replace the electric motor. Motor windings have a different appearance in all these failure situations:... Read more
The post Troubleshooting the most typical winding problems of three phase electric motors appeared first on EEP - Electrical Engineering Portal.
Measuring power quality and finding a bugbear in the network which is messing with the power are considered a highly paid job. Every electrical network and its problems with harmonics, transients, or disturbances are unique... Read more
The post How to measure power quality? What devices should you use and what to measure? 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.
This technical article provides guidance on the possible causes of Buchholz relay operation and recommends actions following the receipt of a Buchholz surge trip or gas collection alarm. It covers... Read more
The post Troubleshooting Buchholz relay and recommended actions when it operates appeared first on EEP - Electrical Engineering Portal.
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... Read more
The post My worst experience in testing and commissioning power transformers (and how I fixed things up) appeared first on EEP - Electrical Engineering Portal.
Welcome to the second part of our three-part series on current transformers (CTs) and their secondary circuits. In Part 1, we explored the fundamental principles of CT operation, the importance... Read more
The post Comprehensive Guide to Secondary Injection Testing of the Current Transformers (Part 2) appeared first on EEP - Electrical Engineering Portal.
For the last sixty years, gas-insulated substation (GIS) has been used in applications related to substations all over the world, and this use of the technology is becoming an increasingly... Read more
The post Choosing between AIS and GIS substation design: Factors you MUST take into consideration appeared first on EEP - Electrical Engineering Portal.
Gas-insulated substations (GIS) are critical components of modern electrical power systems, providing efficient and compact solutions for the transmission and distribution of electricity. These substations utilize sulfur hexafluoride (SF6) gas... Read more
The post A detailed checklist for the installation and commissioning of Gas-Insulated Substations (GIS) appeared first on EEP - Electrical Engineering Portal.
In the realm of electrical power systems, current transformers (CTs) play a vital role in accurately measuring and monitoring current levels. Proper sizing of CTs is essential to ensure their... Read more
The post Never underestimate how important it is to choose the right CT size in fault detection and protection appeared first on EEP - Electrical Engineering Portal.
Let’s discuss the visual and mechanical inspection procedures for oil-filled power transformers. It’s important, very important to examine a variety of key checkpoints, both external and internal to transformers, all... Read more
The post Field secrets and warnings in power transformer mechanical check and visual inspection appeared first on EEP - Electrical Engineering Portal.
This technical article discusses the essentials of transformer differential protection and restricted earth fault protection schemes, contrasting the two and elaborating on why the latter is necessary. Furthermore, it reveals... Read more
The post Mastering stability test of power transformer: Differential and Restricted Earth Fault (REF) protection appeared first on EEP - Electrical Engineering Portal.
Voltage transformer supervision, often referred to as VT fuse fail supervision relay, plays a pivotal role in safeguarding electrical systems. Its primary objective is to detect any potential failure within... Read more
The post A comprehensive guide to voltage transformer (VT) circuit supervision techniques appeared first on EEP - Electrical Engineering Portal.
As we delve deeper into this article, we will explore the various types of interlocking mechanisms used for Gas-Insulated Substation (GIS), their applications in substations, power plants, and electrical installations,... Read more
The post Mastering Interlock Logic and Schemes for a Gas-Insulated Substation (132 kV GIS Example) appeared first on EEP - Electrical Engineering Portal.
The objective of this technical article is to provide certain criteria and time intervals for conducting insulation tests on electric motors, generators and other electrical equipment. Testing is done to... Read more
The post Insulation tests on electric motors and generators: DC High Potential Testing (HiPot) appeared first on EEP - Electrical Engineering Portal.
This article aims to provide a comprehensive analysis of the essential inspection and testing processes, emphasizing their importance in the effective functioning of medium-voltage switchgear. The inspection and testing standards... Read more
The post Prepare yourself for successful inspection and testing of MV metal-clad switchgear appeared first on EEP - Electrical Engineering Portal.
