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An Analytical Model for Frequency Nadir Prediction Following a Major Disturbance
IEEE Transactions on Power Systems, 2020The frequency nadir is a significant indicator for the primary frequency response monitoring and control. It is imperative to predict the maximum frequency deviation and the time at which the maximum occurs with high efficiency and accuracy following a major disturbance. To develop an analytical model for the frequency nadir prediction, the closed-loop
Liu Liu +5 more
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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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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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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.
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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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FNP-BPNN Integrated Model for Power System Frequency Nadir Prediction
2022 IEEE Sustainable Power and Energy Conference (iSPEC), 2022Xiangxu Wang +6 more
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Assessing Frequency Nadir of Power Systems under Power Ramp Disturbances
2021 International Conference on Power System Technology (POWERCON), 2021Yunyue Hua +4 more
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2019 IEEE 4th International Future Energy Electronics Conference (IFEEC), 2019
An effective approach to increasing inertia for modern power systems is by associating the dc-link voltage of grid-connected power converters (GCCs) with the grid frequency, and thus allowing them to generate a certain amount of virtual inertia for frequency support.
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An effective approach to increasing inertia for modern power systems is by associating the dc-link voltage of grid-connected power converters (GCCs) with the grid frequency, and thus allowing them to generate a certain amount of virtual inertia for frequency support.
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A Spatial-temporal Frequency Nadir Prediction Method Based on ConvLSTM with Attention
2022 International Conference on Electrical, Computer and Energy Technologies (ICECET), 2022Longyu Chen, Qingyue Chen, Xiaoru Wang
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Learning Frequency Nadir From Multi-Fidelity Data For Dynamic Secure Microgrid Islanding
2022 IEEE Power & Energy Society General Meeting (PESGM), 2022Yichen Zhang +4 more
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