I’ll assume you have a base case power flow (or OPF) solution in a MATPOWER
case struct mpc and want to find the maximum additional power that can be
transferred from area A to area B without violating constraints, where the
areas are defined via two vectors of bus indices (a and b), possibly by using a
= find(mpc.bus(:, BUS_AREA) == A), etc. Then you’ll just modify the case,
something like this …
% get indices of generators
ga = find(ismember(mpc.gen(:, GEN_BUS), mpc.bus(a, BUS_I))); % area A gens
gb = find(ismember(mpc.gen(:, GEN_BUS), mpc.bus(b, BUS_I))); % area B gens
gother = find(~ismember((1:ng)', [ga; gb])); % remaining gens
% fix dispatches of all gens outside areas A and B
mpc.gen(gother, PMIN) = mpc.gen(gother, PG);
mpc.gen(gother, PMAX) = mpc.gen(gother, PG);
% scale down prices in area A by factor of 10
% scale up prices in area B by factor of 10
% (important thing is to make everything in A cheaper than
% everything in B to maximize transfer from A to B)
mpc.gencost(ga, :) = modcost(mpc.gencost(ga, :), 0.1);
mpc.gencost(gb, :) = modcost(mpc.gencost(gb, :), 10);
% re-run the OPF and compute ATC as total decrease in area B dispatch
r = runopf(mpc);
ATC = sum(mpc.gen(gb, PG)) - sum(r.gen(gb, PG));
Hope this helps,
Ray
> On Apr 2, 2015, at 12:10 AM, Aruna Dharmala <[email protected]>
> wrote:
>
> Respected sir,
> I am doing ATC computation by optimal power flow
> method..
> By using matpower software i run the load flow
> solution by optimal power flow.by <http://flow.by/> doing load flow i am not
> geting how to take a group of buses as an area and how to interface between
> areas for available transfer capability calculation..?
>
> On Wed, Apr 1, 2015 at 6:34 PM, Ray Zimmerman <[email protected]
> <mailto:[email protected]>> wrote:
> Another possible approach is to use an OPF and shift the prices down for the
> sending group of generators and up for the receiving group.
>
> Ray
>
>
>> On Apr 1, 2015, at 8:02 AM, Abhyankar, Shrirang G. <[email protected]
>> <mailto:[email protected]>> wrote:
>>
>> Although Matpower does not have a function for ATC, it has all the required
>> building blocks for doing the calculations You can take a look at the
>> continuation power flow feature in the MatPower manual as a starting point.
>>
>> Shri
>>
>> On Apr 1, 2015, at 5:07 AM, "Aruna Dharmala" <[email protected]
>> <mailto:[email protected]>> wrote:
>>
>>> Respected sir,
>>> can we do available transfer capability calculation
>>> using matpower it is possible..?
>>> if it possible in this software how the
>>> interfacing between two areas of available transfer capability takes place
>>> for group of buses
>
>
