Recognizing the type of transmission & distribution pylons and their equipment is kind of hard if you don’t know where to look for. There are many variations that look similar… Read more
Feb 20, 2019 | Edvard
The installations wherein CTs and VTs are mounted to measure the normal and abnormal values of current and voltage, have many variations in key system parameters, including voltage class, insulation… Read more
Feb 18, 2019 | Edvard
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,… Read more
Feb 06, 2019 | Edvard
There are many terms related to the power transformer operation that can be easily visualized which are especially important for students, like for example transformer construction or regular working principle…. Read more
Jan 21, 2019 | Edvard
To explain in very simple words, I would say that substation is a bunch of electrical devices gathered and connected in one place. On top are clever electrical devices who… Read more
Jan 09, 2019 | Edvard
The utility supply voltage depends on both availability and consumer requirements. The consumer transformer is connected delta on the high-voltage side and grounded wye on the low-voltage side. A fused-disconnect… Read more
Jan 07, 2019 | Edvard
The analysis of faults in synchronous machine and transformer windings presents a special difficulty because the effective impedances of the affected windings under internal fault conditions are not normally known…. Read more
Jan 02, 2019 | Edvard
Connections of private substations to utilities are made more complicated with the addition of private-owned generation facilities. The choice of relays and their placement must be made to ensure adequate… Read more
Dec 12, 2018 | Edvard
The utility-consumer interconnection provides the path for power flow between supplier (utility) and user (consumer). The interconnection may comprise one or more circuits and is assumed to include voltage transformation…. Read more
Dec 10, 2018 | Edvard
The main purpose of an unbalance detection scheme is to remove a capacitor bank from the system in the event of a failure and fuse operation. This will prevent damaging… Read more
Nov 26, 2018 | Edvard
