Can you send me the details I need to reproduce your result? The simple OPF on
that case does show consistency between the objective function value and the
sum of the generator costs.
>> r = runopf('t_auction_case');
>> sum(totcost(r.gencost, r.gen(:, PG)))
ans =
-245.2078
>> r.f
ans =
-245.2076
—Ray
On Oct 17, 2023, at 12:25 AM, Dr. D. Karthikaikannan
<[email protected]> wrote:
this is the result i got it when i run for t_auction_case
================================================================================
| Market Summary |
================================================================================
Dispatch period duration: 1.00 hours
Gen Bus Pg Price Revenue Fix+Var Strt/Stp Total Earnings
# # (MW) ($/MWh) ($) Cost ($) Cost ($) Cost ($) ($)
--- --- -------- -------- -------- -------- -------- -------- --------
1 1 35.32 50.000 1765.78 1172.63 0.00 1172.63 593.16
2 2 36.00 50.241 1808.66 1200.00 0.00 1200.00 608.66
3 220 36.00 50.337 1812.13 1200.00 0.00 1200.00 612.13
4 27 36.00 51.024 1836.87 1200.00 0.00 1200.00 636.87
5 23 36.00 52.170 1878.11 1200.00 0.00 1200.00 678.11
6 13 36.00 52.983 1907.40 1200.00 0.00 1200.00 707.40
7 7 -30.00 51.821 -1554.62 -3000.00 0.00 -3000.00 1445.38
8 15 -10.00 54.031 -540.31 -1000.00 0.00 -1000.00 459.69
9 30 -20.00 55.621 -1112.42 -2000.00 0.00 -2000.00 887.58
-------- -------- -------- -------- -------- --------
Total: 155.32 7801.60 1172.63 0.00 1172.63 6628.97
Converged in 1.14 seconds
Objective Function Value = 2985.78 $/hr
I crossed the objective function value by using
sum(totcost(mpc_out.gencost,mpc_out.gen(:,PG))). the answer is 1172.63.
what the value 2985.78 represents.
|
________________________________
From:
[email protected]<mailto:[email protected]>
<[email protected]<mailto:[email protected]>>
on behalf of Ray Daniel Zimmerman <[email protected]<mailto:[email protected]>>
Sent: Tuesday, October 17, 2023 1:45 AM
To: MATPOWER-L <[email protected]<mailto:[email protected]>>
Subject: Re: What the objective function denotes in the smart market
The smartmarket code simply sets up the cost functions and generator limits for
the OPF problem. The OPF minimizes total generation cost. In the case that
includes dispatchable loads, modeled as negative generation, this cost is
essential the cost of the normal generators plus the negative cost of the
dispatchable loads. This is the same as the net benefit (value of dispatchable
load minus cost of generation), with a change of sign.
If that still doesn’t seem to match for you, please give me minimal example I
can use to reproduce what you’re seeing.
Ray
On Oct 14, 2023, at 12:17 AM, Dr. D. Karthikaikannan
<[email protected]<mailto:[email protected]>> wrote:
Dear sir,
In optimal power flow the objective function is sum of the cost function and
benefit function of generator and load respectively. I run smart market and
cross checked the objective function displayed with the corresponding cost
function and generation using total cost function and it is not equal. what
actually the objective function value denotes in smart market.
D.Karthikaikannan
