Distributed Frequency Divider for Power System Bus Frequency Online Estimation Considering Virtual Inertia From DFIGs
Journal Article
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· IEEE Journal on Emerging and Selected Topics in Circuits and Systems
- Univ. of Connecticut, Storrs, CT (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
In this work, a distributed frequency divider is proposed to estimate power system bus frequency with a limited number of PMUs while considering the inertial contributions from double-fed induction generators (DFIGs). The key idea is to reformulate the original frequency divider by modeling the contributions of DFIGs with inertia emulation and external regional power system through Thevenin equivalents. The distributed frequency divider is general and able to estimate local bus frequencies in a distributed manner. Besides, only the knowledge of the rotor speeds of synchronous generator, boundary bus frequencies and terminal bus frequencies of DFIGs as well as the admittance matrix are required to estimate the frequencies at all buses. This is drastically different from existing approaches that require system observability by PMUs to monitor all bus frequencies. Numerical results carried out on the IEEE 39-bus and modified 118-bus power systems with DFIGs demonstrate and effectiveness and robustness of the proposed method.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Wind Energy Technologies Office
- Grant/Contract Number:
- AC36-08GO28308; AC52-07NA27344
- OSTI ID:
- 1843374
- Alternate ID(s):
- OSTI ID: 1871788
- Report Number(s):
- LLNL-JRNL-835139; NREL/JA-5D00-82004; MainId:82777; UUID:c8fe8602-999e-4606-9d24-077754499bd2; MainAdminID:63774
- Journal Information:
- IEEE Journal on Emerging and Selected Topics in Circuits and Systems, Journal Name: IEEE Journal on Emerging and Selected Topics in Circuits and Systems Journal Issue: 1 Vol. 12; ISSN 2156-3357
- Publisher:
- IEEECopyright Statement
- Country of Publication:
- United States
- Language:
- English
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Extended Frequency Divider for Bus Frequency Estimation Considering Virtual Inertia from DFIGs
Conference
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Mon Oct 04 00:00:00 EDT 2021
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OSTI ID:1832444