Which phenomenon can cause voltage instability in a transmission line?
Practice Questions
Q1
Which phenomenon can cause voltage instability in a transmission line?
Load shedding
Reactive power flow
Overhead line sag
Insulator failure
Questions & Step-by-Step Solutions
Which phenomenon can cause voltage instability in a transmission line?
Step 1: Understand what a transmission line is. It is a system that carries electricity from one place to another.
Step 2: Learn about voltage. Voltage is the electrical force that pushes electric current through a circuit.
Step 3: Know what reactive power is. Reactive power is the power that oscillates between the source and the load, not doing any useful work but necessary for maintaining voltage levels.
Step 4: Recognize that under different load conditions (like when more devices are turned on), the demand for reactive power changes.
Step 5: Realize that if there is not enough reactive power available, it can cause the voltage to drop or become unstable.
Step 6: Conclude that voltage instability in a transmission line can happen due to changes in reactive power flow, especially when the load varies.
