Grid-Forming Frequency Shaping Control for Low-Inertia Power Systems
- Johns Hopkins Univ., Baltimore, MD (United States)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Skolkovo Inst. of Science and Technology, Moscow (Russia)
As power systems transit to a state of high renewable penetration, little or no presence of synchronous generators makes the prerequisite of well-regulated frequency for grid-following inverters unrealistic. As such, there is a trend to resort to grid-forming inverters which set frequency directly. We propose a novel grid-forming frequency shaping control that is able to shape the aggregate system frequency dynamics into a first-order one with the desired steady-state frequency deviation and Rate of Change of Frequency (RoCoF) after a sudden power imbalance. The no overshoot property resulting from the first-order dynamics allows the system frequency to monotonically move towards its new steady-state without experiencing frequency Nadir, which largely improves frequency security. We prove that our grid-forming frequency-shaping control renders the system internally stable under mild assumptions. The performance of the proposed control is verified via numerical simulations on a modified Icelandic Power Network test case.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF)
- Grant/Contract Number:
- AC36-08GO28308; EPCN 1711188; AMPS 1736448; CAREER 1752362; TRIPODS 1934979
- OSTI ID:
- 1764927
- Report Number(s):
- NREL/JA-5D00-79026; MainId:32943; UUID:6d818571-78f7-4858-99a1-740bccc6493e; MainAdminID:19278
- Journal Information:
- IEEE Control Systems Letters, Vol. 5, Issue 6; ISSN 2475-1456
- Publisher:
- IEEECopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Evaluating Methods for Measuring Grid Frequency in Low-Inertia Power Systems: Preprint
Evaluating Methods for Measuring Grid Frequency in Low-Inertia Power Systems