Identification of P-Q bus

The bus known as P-Q bus in power system analysis is the load bus. The load bus is also referred to as the P-Q bus because it is responsible for supplying the active power (P) and reactive power (Q) demands of the system.

Explanation

In power system analysis, the load bus represents the buses where the active and reactive power demands are specified. These buses are typically connected to various loads such as residential, commercial, and industrial consumers. The load bus is characterized by having known values of active and reactive power injections.

The load bus is an essential component of power flow analysis and is used to determine the steady-state operating conditions of a power system. By specifying the active and reactive power demands at the load buses, the power flow equations can be solved to obtain the voltage magnitudes and angles at all buses in the system.

Key Points:
- The load bus is also known as the P-Q bus.
- It represents the buses where the active and reactive power demands are specified.
- It is responsible for supplying the active power (P) and reactive power (Q) demands of the system.

Conclusion

In power system analysis, the load bus is referred to as the P-Q bus because it is responsible for supplying the active power (P) and reactive power (Q) demands of the system. The load bus represents the buses where the active and reactive power demands are specified, and it is an essential component in power flow analysis.