Dear all,
Question. how do I find the constraint. which removes my cost calculation when
calculating the runopf cost?
For case30, I study the dependence of cost when adjusting the voltage of
generators.
For example, I change the voltage of the 4th generator:
cost=function('VM') == cost=function(mpc10.gen(4,6))
The skript runopf is closed and this dependency cannot be seen.
Test network case30 has an optimal value runopf() of f= 576.8923My first calculation. My changes to the input data - pasted the results : mpc10.gen(:,6)=resopf.gen(:,6) - 'VM' mpc10.gen(4,6)=resopf.gen(4,6)-0.025 - new ' VM' 4-th gen rez10=runopf(mpc10) f=576.8923 - the cost hasn't changed since we went down to the minimum. O'Key, runopf found a minimum calculated with the constraints. Next I'll show that in my example cost smaller cost=576.661 - I'm assuming that my initial conditions went out of bounds and were discarded I am assuming that my initial conditions (-0.025 p.u.) give the best cost 576.661 , but go beyond the some constraints. My cost was rejected by runopf. I need to make sure of this Dear all, My calculation. I calculated runopf. I took the results runopf for PG and VG to new_mpc and calculated the runpf(new_mpc). After the runpf calculation, all datasets matched with runopf , in particular the cost. Сosts runpf are runopf the same 576.8923. My runpf option works correctly. Then I slightly reduce the voltage on the 4-th generator "-0.025 p.u. " and calculate the cost by runpf. I got less, better cost f=576.661 I emphasize, the active power of generators 2-6 and the voltage on the buses of generators 1-6 are the same for runpf and runopf, there is only an addition of 0.01 voltage on generator 4. I emphasize that for the case of the test runopf and my runpf, the calculation results in the active power of generators 2-6 and the voltage on the buses of generators 1-6 are the same, there is only an addition of -0.025 voltage on generator 4.( see line 42 in the attached script. ) I have checked that the voltages on all nodes are within the constrains range. I've attached a program to tesе. Question. how do I find the constraint. which removes my cost calculation when calculating the runopf cost? Igor.
zzz_ttest_cost_runpf06.m
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