Optimal Design of Solar PV Farms With Storage

Yashar Ghiassi-Farrokhfal, F Kazhamiaka, C Rosenberg, S Keshav

Research output: Contribution to journalArticleAcademicpeer-review

54 Citations (Scopus)

Abstract

We consider the problem of allocating a capital budget to solar panels and storage to maximize the expected revenue in the context of a large-scale solar farm participating in an energy market. This problem is complex due to many factors. To begin with, solar energy production is stochastic, with a high peak-to-average ratio, thus the access link is typically provisioned at less than peak capacity, leading to the potential waste of energy due to curtailment. The use of storage prevents power curtailment, but the allocation of capital to storage reduces the amount of energy produced. Moreover, energy storage devices are imperfect. A solar farm owner is thus faced with two problems: 1)deciding the level of power commitment and 2) the operation of storage to meet this commitment. We formulate two problems corresponding to two different power commitment approaches, an optimal one and a practical one, and show that the two problems are convex, allowing efficient solutions. Numerical examples show that our practical power commitment approach is close to optimal and also provide several other engineering insights.
Original languageEnglish
Pages (from-to)1586-1593
Number of pages8
JournalIEEE Transactions on Sustainable Energy
Volume6
Issue number4
DOIs
Publication statusPublished - 2015

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