Let’s understand the concept of per unit system by solving an example. In the one-line diagram below, the impedance of various components in a power system, typically derived from their nameplates, are presented. The task now is to normalize these values using a common base.
Per Unit System – Practice Problem Solved For Easy Understanding Read More »
These terms were coined over a time period to identify the appropriate short circuit current magnitude that engineers could use to size the switchgears, switchboards, panelboards, and the circuit breakers.
What Do Symmetrical, Asymmetrical, Momentary, Interrupting, Close & Latch Ratings Mean? Read More »
Inside the substation, conduits route the cables from the yard equipment to the control house. To enable this, conduits can be either directly buried or placed in a cable trench.
If the scope of work requires direct burial of the pvc conduits then, on the drawings, indicate
Direct Buried Conduits – Substation Below Grade Engineering Read More »
Ground grids are installed at a depth where the currents flowing in from the above grade steel structures are easily dissipated into the earth. This is accomplished by:
Ground Grid Design- Substation Below Grade Engineering Read More »
Learning symmetrical components can be overwhelming if you are considering its mathematical aspect only. It is time to step back and understand this concept from a macro view.
Symmetrical Components – Demystified Read More »
