Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
The main Objective of series compensation
It improve the power factor
It reduces the fault currents
Reduce the voltage drop over long distance
None
Reduce the voltage drop over long distance
Quick Trick: Think of series compensation as adding a capacitor in series to counteract the inductive reactance of a long transmission line, directly reducing the net impedance and voltage drop.
Think of series compensation as adding a capacitor in series to counteract the inductive reactance of a long transmission line, directly reducing the net impedance and voltage drop.
Analyze the transmission line impedance
A long transmission line behaves as an inductive load (XLтАЛ). The voltage drop across the line is I * (R + jXLтАЛ).
Apply series compensation
By adding a capacitor (XCтАЛ) in series, the net impedance becomes R + j(XLтАЛ - XCтАЛ). This reduces total reactance, directly minimizing the voltage drop (VdropтАЛ = I * ZnetтАЛ).
A: Series compensation does not improve the power factor (shunt compensation is used for that); B: Shunt reactors, not series capacitors, are typically used to reduce fault current; D: C is the standard primary objective for series compensation.
C is correct because series compensation reduces the inductive reactance of the transmission line, which directly decreases the reactive voltage drop across the line.
Remember that Series devices (Capacitors) change the line impedance for voltage drop, while Shunt devices (Reactors/Capacitors) change the load characteristics for power factor/voltage support.