Abstract
The progressive integration of renewable energy resources in the modern power grid can result in unsatisfactory frequency responses. To address this problem, wind turbine generators (WTGs), in particular, can be employed to support the power grid. Most works, however, only consider a simple step disturbance. In this paper, a new class of worst-case disturbances is introduced and their nefarious impact on renewable-penetrated power systems is investigated. The worst-case disturbances are derived using optimal control theory. More importantly, the proposed mechanism allows to determine the reaction time to trigger supportive control actions of WTGs to ensure satisfactory frequency response. Numerical results are provided and the effects of the worst-case disturbance on the reaction time are presented.
Original language | English |
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Pages (from-to) | 572-583 |
Number of pages | 12 |
Journal | Simulation Series |
Volume | 52 |
Issue number | 1 |
State | Published - 2020 |
Event | 2020 Spring Simulation Multiconference, SpringSim 2020 - Virtual, Online Duration: May 18 2020 → May 21 2020 |
Funding
Research sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory (ORNL), managed by UT-Battelle, LLC for the U.S. Department of Energy under Contract No. DE-AC05-00OR22725. In addition, this research has been supported in part by NSF-EPCN award # 1711432, and a Joint Directed Research and Development (JDRD) Program award. Research sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory (ORNL), managed by UT-Battelle, LLC for the U.S. Department of Energy under Contract No. DE-AC05-00OR22725. In addition, this research has been supported in part by NSF-EPCN award # 1711432, and a Joint Directed Research and Development (JDRD) Program award. This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).
Keywords
- Optimal control
- Power system frequency control
- Reaction time
- Smart grids
- Wind turbine generators