1. That’s the thing - i haven’t run into the cases where constraints are
violated ( during my 0.5 year experience with MATPOWER), however
constraints described in the user guid (section 5.2) does not include
line’s power limits. I just wanted to confirm that.
2. I also just run into ‘OF_FLOW_LIM’ option. It’s default value in the
manual is specified to be 0. So is there any difference between
mpopt = mpoption('OUT_ALL',0,'VERBOSE',0);%,'OPF_FLOW_LIM',1);
[mpc_solved, success] = rundcopf(mpc,mpopt);
and
mpopt = mpoption('OUT_ALL',0,'VERBOSE',0,'OPF_FLOW_LIM',1);
[mpc_solved, success] = rundcopf(mpc,mpopt);
?
On Mon, Jan 20, 2014 at 8:57 AM, Petr Kaplunovich <[email protected]> wrote:
> 1. That’s the thing - i haven’t run into the cases where constraints are
> violated ( during my 0.5 year experience with MATPOWER), however
> constraints described in the user guid (section 5.2) does not include
> line’s power limits. I just wanted to confirm that.
>
>
> 2. I also just run into ‘OF_FLOW_LIM’ option. It’s default value in the
> manual is specified to be 0. So is there any difference between
>
>
> mpopt = mpoption('OUT_ALL',0,'VERBOSE',0);%,'OPF_FLOW_LIM',1);
>
> [mpc_solved, success] = rundcopf(mpc,mpopt);
>
>
> and
>
>
> mpopt = mpoption('OUT_ALL',0,'VERBOSE',0,'OPF_FLOW_LIM',1);
>
> [mpc_solved, success] = rundcopf(mpc,mpopt);
>
>
> ?
>
>
> On Mon, Jan 20, 2014 at 8:26 AM, Abhyankar, Shrirang G. <
> [email protected]> wrote:
>
>> See below.
>>
>> From: Petr Kaplunovich <[email protected]>
>> Reply-To: MATPOWER discussion forum <[email protected]>
>> Date: Mon, 20 Jan 2014 07:21:40 -0500
>> To: <[email protected]>
>> Subject: DCOPF taking into consideration line power limits.(and N-1
>> criteria)
>>
>> Dear All,
>>
>> I was doing contingency screening research for a last half year using
>> MATPOWER and only now decided to read the documentation to MATPOWER
>> entirely.
>> I was thinking that DCOPF takes into consideration line power flow limits
>> (basically the difference between node angles). However it appears to me
>> that these constraints are not considered.
>>
>>
>> 1. Am I right?
>>
>>
>> I don't think so. Perhaps you are not setting up correctly causing
>> angle limits to be ignored? Please send a small reproducible example that
>> we can take a look at.
>>
>> 2. Is there any easy way to include these constraints to DCOPF solver?
>> I have read the section 6.1 but still confused - is there any examples of
>> implementation?
>>
>>
>> 3. Is there a way to make DCOPF solver to take into consideration N-1
>> security criteria? (i am currently interested only in line outages)
>>
>>
>> You'll need to extend MatPower's DCOPF by introducing additional
>> constraints, variables for the contingency cases. See the manual section on
>> 'Extending the OPF'.
>>
>> Shri
>>
>>
>> Thank you!
>> Petya
>>
>>
>
