On Sep 10, 2020, at 11:00 AM, Davide Maglione
<davide.maglion...@gmail.com> wrote:
Hi Ray,
thank you for your support and your answers. I am new to power
flows so i struggled a bit, but i managed to succesfully run a pf
for a 4 month period in my network. Thank you for your help.
I want to add energy storage in my network, and, taking into
account a surplus of power occasionally in the 4 month period, i
would like to create a new objective function in order to minimize
the cost of installation of the storage system.
Is the Extended OPF feature the best way to do this? Should i think
of the storage simply as an additional load on the bus and the
occasional surplus of energy as an additional power from the
generators?
Thank you for your help,
Best Regards,
Davide Maglione
Da: Ray Daniel Zimmerman
Inviato: venerdì 24 luglio 2020 16:10
A: MATPOWER-L
Oggetto: Re: Bus, Loads and Generators question
It sounds like your P and Q are branch flow values, not nodal
loads, so no they should not be used as loads in the bus matrix.
Ray
On Jul 23, 2020, at 12:42 PM, Davide Maglione
<davide.maglion...@gmail.com> wrote:
Hi Ray and thank you for your reply,
i will try to make my case more clear. I am studying a radial
transmission network (150 kV). There are 3 branches directly
connected to a station. I am thinking of using this station as a
“sink” (a load for Matpower) that collects the power generated
by the wind power plants in the network.
My final goal is to do an extended optimal power flow, using some
custom constraints, to optimize size and location of energy storage
in order to avoid wind curtailment by the transmission operator.
I have data of P, Q and I of branches, and V at the nodes
(intersection of branch and power plant). Should i put those data
(P,Q) in the 3rd and 4th column of the bus matrix data despite they
are not load buses? Or should i do something different in my
scenario?
I have put an image to semplify things.
Hope this time i have make it more clear, thank you again for your
time,
Davide Maglione
Da: Ray Daniel Zimmerman
Inviato: venerdì 17 luglio 2020 22:40
A: MATPOWER-L
Oggetto: Re: Bus, Loads and Generators question
It isn’t completely clear what data you have to create your case,
but you definitely need both load and generation for the system to
make any sense. Total generation is equal to total load plus losses,
so you need both.
And dispatchable load refers to loads whose quantities are not
fixed, but can vary depending on the price.
Ray
On Jul 16, 2020, at 10:06 AM, Davide Maglione
<davide.maglion...@gmail.com> wrote:
Hello,
For my thesys work i am trying to recreate a trasmission network
with high penetration of wind power. I have some doubts on how to
consider my buses, because in my network there are no loads but only
generators and i am considering the buses as the nodes of the
system.
I have V,I and P datas of each n_i node, so can i put in the 3rd
and 4th column of the bus matrix those flow data despite they are
not load buses?
Finally, what do you mean with “dispatchable load”?
Thank you very much,
best regards.
Davide Maglione
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