How Stability in a power system is characterized?
Answer: Stability in power system is characterized by rotor angle stability and voltage stability
What is steady state or small signal stability?
Answer: A power system is study state stable for particular steady state operating condition if, following any small disturbance, it reaches a steady state operating condition which is identical or close to the pre-disturbance operating condition
example of small disturbance: small load changes takes place in the grid.
What is Transient Stability?
Answer: A power system is transient stable for a particular steady state operating conditions and for particular large disturbances or series of disturbances if the system after the following a sequence of disturbances reaches an acceptable steady state operating condition
example of large disturbance: tripping of transmission lines, short circuit fault, load throw-off.
Factors that determine the power transfer capability in transmission system?
Answer: Factors that determine the power transfer capability of the transmission system are:
- Voltage regulation
- Thermal Limits
- System Stability
What are the methods to increase the power transfer capability in a power system?
Answer: To increase the power levels for the transmission of power from sending end to receiving end, either characteristic impedance of the transmission line can be increased (by providing compensation devices in the network) or by increasing the transmission voltage levels power transfer capability can be increased.
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