Developing Frequency Stability Constraint for Unit Commitment Problem Considering High Penetration of Renewables

Gao, Ningchao; Dong, Shuan; Fang, Xin; Hoke, Andy; Gao, David Wenzhong; Tan, Jin

doi:10.1109/PVSC48320.2023.10360076

Developing Frequency Stability Constraint for Unit Commitment Problem Considering High Penetration of Renewables

Conference · Mon Dec 25 04:00:00 EST 2023

DOI:https://doi.org/10.1109/PVSC48320.2023.10360076· OSTI ID:2305651

Gao, Ningchao; Dong, Shuan; Fang, Xin; ; Gao, David Wenzhong;

As zero-carbon electricity systems become the trend of future grid, the system inertia provided by conventional synchronous generators (SGs) keeps decreasing. The resultant lower system inertia will inevitably cause frequency stability problem, especially in the first few seconds following disturbance. To tackle this challenge, this paper proposes a frequency stability constraint for power systems unit commitment problem by considering the fast frequency responses (FFRs) from inverter-based resources (IBRs). Our developed frequency stability constraint is grounded on an analytical frequency nadir estimation framework that considers both SG and IBR dynamics. The accuracy of our frequency nadir estimation framework is validated by most severe N-1 contingency simulation result in a real island system. Then, the adaptive inertia frequency stability constraint is derived by performing sensitivity analysis with our frequency nadir estimation framework. Finally, we demonstrate the effectiveness of our developed frequency stability constraint with one year day-ahead unit commitment results of the island system.

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Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office

DOE Contract Number:: AC36-08GO28308

OSTI ID:: 2305651

Report Number(s):: NREL/CP-5D00-88828; MainId:89607; UUID:6f496be9-975a-421a-a2a0-0f1100a20771; MainAdminId:71820

Country of Publication:: United States

Language:: English

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POWER TRANSMISSION AND DISTRIBUTION
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