Hello Professor,
I am using MATPOWER to solve DCOPF of a modified IEEE 118 case. I have set
the upper bounds of the branch flow. The results indicate that the DCOPF
converges but the some of the branch flow constraints are violated.
I have set 'OPF_FLOW_LIM',1 in the mpcoption. And the output is:
Optimization terminated.
Converged in 0.12 seconds
Objective Function Value = 125071.89 $/hr
================================================================================
| System Summary
|
================================================================================
......
================================================================================
| Branch Flow Constraints
|
================================================================================
Brnch From "From" End Limit "To" End To
# Bus Pf mu Pf |Pmax| Pt Pt mu Bus
----- ----- ------- -------- -------- -------- ------- -----
7 8 - -448.26 400.00 448.26 0.000 9
38 26 0.000 224.69 200.00 -224.69 - 30
96 38 - -192.40 160.00 192.40 0.000 65
116 69 0.000 111.88 100.00 -111.88 - 75
138 89 0.000 111.81 100.00 -111.81 - 90
140 89 0.000 203.48 200.00 -203.48 - 92
Would you please tell me if other settings are required to ensure the
branch flow limit?
Thanks
--
Jiaying Shi
