1
$\begingroup$

This is more like an optimization problem but any solution is appreciated.

I have a data set with input specifying power(demand) to be generated for a particular time period(TP).

Input:
Time --- Power
01 to 02 1000
02 to 03 2000
03 to 04 2000
04 to 05 1500
etc.,

But the power can't just be increased from 1000 to 2000 at 01:59:59. Here there will be some ramping rate(gradient) which I want to minimise by keeping the imbalance to 0. Imbalance may arise if you deviate from what is needed, here power cannot be more or less than what is required in that Time Period.

In summary I have to generate the black line(which is output) below (red line is the input). enter image description here

I am trying to get an output which can be a curve(black line) equation or the power to generate at the deflection points(say at around 1:45 we generate 800 then at 2:15 it can be 2200 which will keep the imbalance to 0).

When I tried to treat this as an optimization problem it may look something like this:
Objective : Minimise gradient f(x) = Yj-Yi/Xj-Xi between 2 points (Xi,Yi) and (Xj,Yj)
Subject to constraints:

average of Yi = Power value(redline in that Time Period)

But I am struggling to complete it how to represent mathematically to be able to implement using programming like R's lpsolve/optimize or Python's scipy optimizers.

Any help on the approach to take would be greatly appreciated.

$\endgroup$
  • $\begingroup$ Could you share data? I might have an idea. $\endgroup$ – Royi Jul 7 '18 at 21:25

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.