Dear Dr.Zimmerman
I am a graduate student in electrical engineering from
Arizona state university. I have a doubt about opening buses using
MATPOWER. I have two questions.
1) My simulation involves removing a substation out of the network and
testing if the power flow converges. Just like first contingency analysis
for substations. Each bus is characterized as a substation or in some cases
combination of 2 buses are classified as substation. I have read the
MATPOWER user manual, from which I find only ways to remove branches and
generator from the network. I have tried the simulation by removing the
branches connected to the bus using the command
mpc.branch(110,BR_STATUS)=0;
for removing the branch 110 which may connect two buses. Similarly removing
all the branches connected to a bus in order to isolate a bus. I believe
this approach is right to remove a bus. But my powerflow diverges each time
I remove any bus(or substation). I believe this will not be a case as
system most of time must work for first contingency involving substation. I
have tested my code on both 118 and 30 bus case. Is there any way to remove
bus directly off other than removing using the branches(above mentioned
approach) ?
2) Is there any way to do convert the existing “case118.m” to modified
118 bus?
Best Regards
Ashwin Venkataramanan
Arizona state university
