Storage Size Determination for Grid-Connected Photovoltaic Systems

Mathematics – Optimization and Control

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Submitted to IEEE Transactions on Sustainable Energy, June 2011; Jan 2012 (revision)

Scientific paper

In this paper, we study the problem of determining the size of battery storage used in grid-connected photovoltaic (PV) systems. In our setting, electricity is generated from PV and is used to supply the demand from loads. Excess electricity generated from the PV can be stored in a battery to be used later on, and electricity must be purchased from the electric grid if the PV generation and battery discharging cannot meet the demand. Due to the time-of-use electricity pricing, electricity can also be purchased from the grid when the price is low, and be sold back to the grid when the price is high. The objective is to minimize the cost associated with purchasing from (or selling back to) the electric grid and the battery capacity loss while at the same time satisfying the load and reducing the peak electricity purchase from the grid. Essentially, the objective function depends on the chosen battery size. We want to find a unique critical value (denoted as $C_{ref}^c$) of the battery size such that the total cost remains the same if the battery size is larger than or equal to $C_{ref}^c$, and the cost is strictly larger if the battery size is smaller than $C_{ref}^c$. We obtain a criterion for evaluating the economic value of batteries compared to purchasing electricity from the grid, propose lower and upper bounds on $C_{ref}^c$, and introduce an efficient algorithm for calculating its value; these results are validated via simulations.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Storage Size Determination for Grid-Connected Photovoltaic Systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Storage Size Determination for Grid-Connected Photovoltaic Systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Storage Size Determination for Grid-Connected Photovoltaic Systems will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-97412

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.