Solid State Relays (Static Relays)
What is a Static Relay? There are two basic classifications of relays – Electromechanical Relays and Solid State Relays (Static … Continue Reading
Substation
All Day Efficiency of Transformer
Definition The ratio of output in kWh to the input in kWh of a transformer over a 24-hour period is … Continue Reading
Primary and Back-up Protection in Power System
Primary and Back-up Protection Primary protection (Main protection) is the essential protection provided for protecting an equivalent/machine or a part … Continue Reading
Stroboscopic Effect in Fluorescent Lamps
The Stroboscopic Effect in Fluorescent lamp is a phenomenon which causes running or moving equipment to appear stationary or appear … Continue Reading
Load Forecasting – Purpose, Classification and Procedure
What is Load Forecasting? Electrical energy cannot currently be stored in large amounts. It has to be generated whenever there … Continue Reading
Short Circuit – Causes and Effects
What is Short Circuit? Whenever a fault occurs on a network such that a large current flows in one or … Continue Reading
Sag in Overhead Transmission Lines
The difference in level between points of supports and the lowest point on the conductor is called sag in overhead transmission lines. … Continue Reading
Corona Effect in Power System
What is Corona? The phenomenon of violet glow, hissing noise and production of ozone gas in an overhead transmission line is … Continue Reading
Function of Protective Relays in Power System
We usually think of an electric power system in terms of its more impressive parts – the big generating stations, transformers, … Continue Reading
IEC 61850 – Substation Automation – Fundamentals
What is IEC 61850? IEC 61850 is a standard for the design of electrical substation automation. It is the base … Continue Reading