Temporary Generator Data

The generator bus type used in modeling the power flow simulation. When you choose a model, those fields which are unavailable are dimmed.

• Swing: A swing bus holds the bus voltage and angle constant. To do this there cannot be limits on the amount of MW or MVAR the swing machine can accept or provide.
• PV: Constant power, constant voltage generator. This is also known as a regulated generator. This model tries to hold a user-specified bus voltage within generator MVAR limits.
• PQG: Constant power, constant var generator. This is also known as an unregulated generator. This model holds the MVAR generation within given voltage limits.

The desired control voltage for a regulated generator (PV). The generator will try to control the voltage at the controlled bus to a given value. If the generator bus is the swing bus, this voltage serves as the reference voltage. The voltage is entered in per-unit.

Controlled angle is used only when a generator is designated as a swing generator. The value is entered in degrees.

The generator output MW. This may be actual operating or a rated value. This applies only to a PV or PQG generator.

The generator output MVAR. This is only used when the generator is a constant power, constant var (PQG) machine or when a PV generator MVAR limit has been reached and the machine automatically switches to PQG.