Results 31 to 40 of about 3,108 (255)
Energies, 2020 The detection, mitigation, and classification of power quality (PQ) disturbances have been issues of interest in the power system field. This paper proposes an approach to detect and classify various types of PQ disturbances based on the Stockwell ...
Ngo Minh Khoa, Le Van Dai
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Research on dynamic voltage restorer based on self-coupled proportional–integral controller
Energy Reports, 2021 Aiming at dynamic voltage restorer (DVR) needs real-time detection of voltage sag and fast compensation. However, the traditional proportional–integral (PI) control of DVR is difficult to take into account the fast following, immunity, and robustness of ...
Jingran Ma, Jing Bai, Wenjing Wang
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On phasor estimation for voltage sags detection in a smart grid context [PDF]
2015 IEEE 24th International Symposium on Industrial Electronics (ISIE), 2015 The advent of smart grids have urged a radical reappraisal of distribution networks and power quality requirements, and effective use of the network are indexed as the most important keys for smart grid expansion and deployment regardless. One of the most efficient ways of effective use of these grids would be to continuously monitor their conditions ...
Yassine Amirat +2 more
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An FCS-MPC Strategy for Series APF Based on Deadbeat Direct Compensation
Energies, 2023 Aiming at the delay caused by the phase-locked loop (PLL) and harmonic detection in the traditional control of a series active power filter (SAPF), a deadbeat direct control (DBDC)-based finite control set model predictive control (FCS-MPC) strategy for ...
Guifeng Wang, Xujie Gao, Chunjie Li
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Evaluation of Different Methods for Voltage Sag Source Detection
Journal of Energy : Energija, 2022 This paper compares and evaluates three different methods for voltage sag source detection. First method (method I) is based on the assumption, that the energy flow at the monitoring point increases during downstream events and decreases during upstream events.
Polajžer, Boštjan +2 more
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A Novel Direct Control of Z-Source Inverter Based on Adaptive Neuro-Fuzzy Inference System [PDF]
Engineering and Technology Journal, 2015 This paper proposes a novel method for controlling the output DC-link voltage of the Z-source inverter foradjustable speed drive applications. An adaptive neuro-fuzzy controller is used to control the DC-link.
Majid K. Al-Khatat, Lina J. Rashad
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An Adaptive Approach for Voltage Sag Automatic Segmentation
Energies, 2018 Voltage sag characterization is essential for extracting information about a sag event’s origin and how sag events impact sensitive equipment. In response to such needs, more characteristics are required, such as the phase-angle jump, point-on-wave,
Xianyong Xiao +4 more
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Unusual voltage sag event detection in power systems [PDF]
2008 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America, 2008 Three multivariate statistical tools (principal component analysis, factor analysis, analysis discriminant) have been tested to characterize and model the sags registered in distribution substations. Those models use several features to represent the magnitude, duration and unbalanced grade of sags.
Barrera Núñez, Víctor Augusto +3 more
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Energy Reports, 2020 The unified power quality conditioner (UPQC) has become one of the most proficient solutions for compensating the effects of voltage fluctuations, harmonics, sudden load changes and enhancing the power quality of distribution networks.
Tao Jin +4 more
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Elektronika ir Elektrotechnika, 2020 The paper deals with an application of combined techniques of dynamical voltage restorer (DVR) and uninterruptible power supply (UPS) that make possible both the short voltage sags compensation, as well as longer power supply interruptions, under the ...
Branislav Dobrucky +2 more
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