Stability of power system can be improved by1. Reducing voltage of transmission2. Using parallel transmission lines3. Using series compensatorsWhich of the above statements are correct?

• A. 1 and 3 only
• B. 2 and 3 only
• C. 1 and 2 only
• D. All 1, 2 and 3

Answer: (B)

The methods often employed in practice to improve system stability are:
1. Increasing System Voltage
2. Reduction in Transfer Reactance
3. Using High Speed Circuit Breaker
4. Automatic Reclosing
5. Transient Stability
6. Turbine Fast Valving
7. Application of Braking Resistors
8. Single Pole Switching: