Operation of a High Renewable Penetrated Power System With CSP Plants: A Look-Ahead Stochastic Unit Commitment Model

Brian Hodge, Benjamin Kroposki, Ershun Du, Ning Zhang, Xongxiang Lu, Chongqing Kang, Qing Xia, Qin Wang

Research output: Contribution to journalArticlepeer-review

119 Scopus Citations


The integration of variable renewable energy (VRE) generation, i.e., wind power and solar photovoltaic, brings significant uncertainty for the power system operation. Different with VRE techniques, concentrating solar power (CSP) is an appealing renewable generation technology due to its dispatch ability through the use of thermal energy storage and is thus expected to play a significant role in high renewable energy penetrated power systems. In this paper, we propose a look-ahead stochastic unit commitment model to operate power systems with CSP under high renewable energy penetration. It has a three-stage structure. The first stage optimizes the operational decisions in a day-ahead framework based on forecasts; the second stage minimizes the expected generation cost for possible realizations in the real time; and the third stage accounts for look-ahead operation in future operating days. This paper has a dual purpose: First, exploring how CSP plants operate in high renewable penetrated power systems; and second, analyzing the benefits of CSP in accommodating VRE generation. A case study on a modified IEEE RTS-79 system with actual solar and wind power data is provided to validate the proposed method.

Original languageAmerican English
Article number8449104
Pages (from-to)140-151
Number of pages12
JournalIEEE Transactions on Power Systems
Issue number1
StatePublished - Jan 2019

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

NREL Publication Number

  • NREL/JA-5D00-70154


  • Concentrating solar power
  • Energy storage
  • High share of renewable energy
  • Operational flexibility
  • Stochastic unit commitment


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