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#Power world simulator regulate remote bus generator

PQ (Continuous Shunts at Var Limit):: similar to PQ (Gens at Limit), but it's a continous switched shunt at limits.

PQ (SVC at Limit): similar to PQ (Gens at Limit).

The voltage equation will be used just as for a generator.

PV (SVC): a bus that has a switched shunt with (ShuntMode = SVC) and (SVCType = SVSMO3 or SVSMO1) configured to regulate the voltage at the terminal bus.

This is an indication that the bus type would have been PV, but is not because of the generators at Mvar limits Because we are stuck at a Mvar limit, the equations used is the reactive power (Q) equation.

#Power world simulator regulate remote bus generator

PQ (Gens at Var Limit): a bus that has a generator at it regulating the terminal voltage, however presently the generator is stuck at a maximum or minimum Mvar limit and is thus no longer able to regulate the voltage.

The unknown variables at this bus are then the real power (P) and reactive power (Q) which are then used to assign the real and reactive power at the slack generator. Using our notation we might call it a dV bus. This bus has a fixed voltage magnitude and voltage angle.

Slack: one bus in each electrical island is chosen as the island slack bus.

The extra Q injection at the bus is then used to assign the reactive power output to the generators at the bus. The unknown variables are then voltage angle ( d) and the extra Q injection at the bus. Again this is because the equations are the summation of real power (P) and an equation for Voltage = Setpoint (V).

PV: a bus that has a generator at it which is regulating the terminal voltage to a voltage setpoint will be called a PV bus.

We call them a PQ bus because we use the equations for summation of real power (P) and reactive power (Q) at these buses and the unknown variables are then voltage angle (V) and voltage angle ( d).

PQ: buses that have no voltage control devices such as a generator at them and are also not remotely controlled by a generator will be called a PQ bus.

The following BusCat strings are the standard one seen for generators and switched shunts using local voltage control as described in the Power Flow: Bus Equation Basics topic. This is a comprehensive list of the potential string that will appear in this field and what they mean. The various topics on the Power Flow Theory all end up describing different possibilities for the field that appears in the mismatch table called "Type" or "BusCat".