Nadir Frequency Estimation in Low-Inertia Power Systems
2020 IEEE 29th International Symposium on Industrial Electronics (ISIE), 2020Increasing amounts of non-synchronous generation in power grids are bringing reductions in system inertia. In a grid with extremely low inertia, the estimation of frequency indicators such as the frequency nadir can be used to feed into predictive system controls that would avoid nuisances such as triggering system protection systems, avoiding needless
Harold R. Chamorro +6 more
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A Power System Frequency Nadir Prediction Model Based on FNP-DBN Fusion-Driven Method
2023 IEEE Sustainable Power and Energy Conference (iSPEC), 2023Xiangxu Wang, Nan Zou, Zhengwen Li
exaly +2 more sources
Simplified Prediction Model of Frequency Nadir for Power Systems Penetrated With Renewable Energy
2022 IEEE Power & Energy Society General Meeting (PESGM), 2022Zhiguo Hao, Songhao Yang
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Prediction of Frequency Nadir by Employing a Neural Network Approach
2018 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe), 2018Ahstract- The increased integration rate of inverter-interfaced devices is affecting the frequency response of the modern power systems. This leads to an increase of the variability of the power generation and to a reduction of the total system's inertia.
Dimitrios Zografos +3 more
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Two-Stage Linearization of Frequency Nadir Constraint for Unit Commitment
IEEE Transactions on Power SystemsLiu Wenxia, Qingxin Shi, Rui Cheng
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Near nadir scattering properties at w-band frequency for the sea surface
IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004The sea surface is considered a useful natural calibration target for satelliteborne cloud profiling radar with a narrow antenna beam. However, the normalized radar cross section (NRCS) of the sea surface at W-band frequency is not well known. It is known that the NRCS depends on the wind speed and direction over ocean.
Hiroaki Horie +2 more
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Frequency Nadir Constrained Unit Commitment Considering Multi-type Generation Resources
2025 IEEE Power & Energy Society General Meeting (PESGM)Yong Fu
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Definition and Analysis of the Frequency Security Boundary Dominated by Frequency Nadir
2023 2nd International Conference on Smart Grids and Energy Systems (SGES), 2023Hongtao Liu +5 more
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Modeling the nadiral low-frequency pulse return of one-dimensionally rough surfaces
Waves in Random and Complex Media, 2011Measurements of radar pulse return waveforms are known to provide information on properties of the observed surface, and are commonly used in oceanographic altimetry. In such applications, the convolution model (also called the “Brown model”) is widely applied for waveform analysis.
N. Niamsuwan, J.T. Johnson, K.C. Jezek
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Analytical Frequency Nadir Prediction Considering Inverter-Based Fast Frequency Response.
CoRR, 2022Shuan Dong +4 more
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