Results 1 to 10 of about 389 (177)
Review of RoCoF Estimation Techniques for Low-Inertia Power Systems
Energies, 2023 As the traditional generation is gradually replaced by inverter-based resources, a lack of rotational inertia is now a common issue of modern power systems, which leads to an increasingly larger rate of change of frequency (RoCoF) following contingencies
Junru Chen, Dongliang Nan, Muyang Liu
exaly +3 more sources
Field Measurement of Frequency and ROCOF in the Presence of Phase Steps [PDF]
IEEE Transactions on Instrumentation and Measurement, 2019 A description of the importance of rate of change of frequency (ROCOF) measurements to the operation of electricity networks is given. The susceptibility of ROCOF measurements to common power system disturbances such as phase steps is described. A measurement campaign to observe ROCOF at multiple locations in an island grid dominated by renewable ...
Paul S Wright +2 more
exaly +5 more sources
Energies, 2020 The high rate of change of frequency (RoCoF) issue incurred by the integration of renewable energy sources (RESs) into a modern power system significantly threatens the grid security, and thus needs to be carefully examined in the operational planning ...
Jiaxin Wen, Siqi Bu, Bowen Zhou
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RoCoF Droop Control of PMSG-Based Wind Turbines for System Inertia Response Rapidly
IEEE Access, 2020 This paper proposes a RoCoF droop control, which relieves the transient frequency change process by controlling the energy of the DC side capacitor. Firstly, analyze and classify the control time scale of the wind power system (WPS).
Binbing Wu, Xiwang Abuduwayiti
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Identifying the Largest RoCoF and Its Implications
IEEE Transactions on Power SystemsThe rate of change of frequency (RoCoF) is a critical factor in ensuring frequency security, particularly in power systems with low inertia. Currently, most RoCoF security constrained optimal inertia dispatch methods predominantly rely on aggregated frequency models which are tractable in optimization problems. These models, however, do not account for
Licheng Wang +2 more
exaly +6 more sources
Field Testing of ROCOF Algorithms in Multiple Locations on Bornholm Island [PDF]
2018 Conference on Precision Electromagnetic Measurements (CPEM 2018), 2018 The importance of rate of change of frequency (RoCoF) measurements in electrical power grids is discussed along with its measurement challenges. A measurement campaign in a renewable-rich grid to compare ROCOF measurement algorithms with a variety of configurations at multiple locations is presented. An example of a captured ROCOF event is given.
Paul S Wright +2 more
exaly +4 more sources
Modelling of synchronous generators for the analysis of frequency transients above 1 Hz/s [PDF]
Archives of Electrical Engineering, 2022 Large synchronous generators are of high importance for the stability of power systems. They generate the frequency of the system and stabilize it in case of severe grid faults like trips of large in-feeders or loads.
Alf Assenkamp
doaj +1 more source
An Improved Droop Control Scheme of a Doubly-Fed Induction Generator for Various Disturbances
Energies, 2021 Doubly-fed induction generators (DFIGs) participate in the system frequency regulation using a fixed-coefficient droop control scheme. Nevertheless, the frequency-supporting capability of this control scheme with fixed gain is limited for different ...
Yien Xu +3 more
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Energy Reports, 2023 The rate of change of frequency (ROCOF) has become a key parameter to be monitored under high penetration of renewable energy. Any significant ROCOF should be mitigated immediately to avoid any shutdown of power plants and hence power interruptions to ...
Xie Cherng Miow +4 more
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New Synthetic Inertia Control for Wind Energy Conversion System
IEEE Access, 2023 Participation of modern variable-speed wind turbine generators in system frequency support has gained much attention from various transmission system operators to increase renewable technology hosting capacity in their power networks.
Sherif Fathallah +3 more
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