A PQ bus typically represents a constant power load. A PQ bus with PD,QD set to 0,0 represents a bus where no load is connected. For example, imagine a substation with no customers connected to it.
During the power flow, these busses will be treated like PQ busses. Just that the equation will be that the sum of flows to the bus will be zero, instead of a nonzero load value. In other words, you will still get a power constraint, just so happens that the PD and QD values are set to zero. From: <[email protected]<mailto:[email protected]>> on behalf of davor sutic <[email protected]<mailto:[email protected]>> Reply-To: MATPOWER discussion forum <[email protected]<mailto:[email protected]>> Date: Thursday, 7 July 2016 6:18 pm To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: PQ buses that have their Pd and Qd set to 0 I've noticed several cases in the examples where PQ buses have both their Pd and Qd set to 0 (example: bus 22 in case2869pegase.m). What kind of buses are those? How are they treated in a LoadFlow calculation? Thanks a lot
