Results 11 to 20 of about 1,597 (258)

Whole‐line fault analysis method for unbalanced distribution networks with inverter interfaced distributed generators

open access: yesIET Generation, Transmission & Distribution, 2022
The integration of the inverter interfaced distributed generators (IIDGs) challenges the conventional fault analysis in distribution networks. However, the existing analysis methods mainly focus on the fault occurring at the network buses and little ...
Yingliang Li, Deming Wang
doaj   +1 more source

Double-Synchronous-Reference-Frame-Based Power-Synchronized PLL-Less Grid-Following Inverters for Unbalanced Grid Faults

open access: yesIEEE Open Journal of Power Electronics, 2023
This article proposes a double-synchronous-reference-frame-based power-synchronized grid-following inverter (DS-PSGFLI). In contrast to existing types of phase-locked-loop (PLL)-based grid-following inverters (GFLIs) and PLL-less power-synchronized GFLIs
Nabil Mohammed   +2 more
doaj   +1 more source

Root-Mean Square Model of Three-Phase Photovoltaic Inverter for Unbalanced Fault

open access: yesIEEE Open Access Journal of Power and Energy, 2020
The feed-in tariff, introduced in 2012, led to a significant increase in Photovoltaics (PVs) throughout Japan. About half of PVs are three-phase PVs that are connected to low voltage or medium voltage networks.
Hayato Satoh   +3 more
doaj   +1 more source

Model Predictive Current Control for Fault-Tolerant Bidirectional Voltage Source Converter With Open Circuit Fault and Unbalanced Grid Voltage

open access: yesIEEE Access, 2020
To improve the fault-tolerant operation capability of bidirectional voltage source converter (BVSC), an improved model predictive current control (IMPCC) for fault-tolerant BVSC, is proposed with balanced DC-link capacitor voltage under unbalanced grid ...
Shiyang Hu   +3 more
doaj   +1 more source

Novel approach to determine unbalanced current circuit on Nigerian 330kV transmission grid for reliability and security enhancement

open access: yesHeliyon, 2021
The present Nigerian transmission network is faced with the difficulty of evacuating and dispatching reliable and quality electricity supply and simultaneously maintaining an operational standard of security to prevent any collapses.
Ademola Abdulkareem   +3 more
doaj   +1 more source

An Unbalance Three Phase Currents Detection Technique for Load Side Broken Conductor Fault in the Iraqi Distribution System [PDF]

open access: yesEngineering and Technology Journal, 2023
Electrical supply safety and quality represent targets that Iraqi power distribution companies always strive to meet. Load-side broken conductor fault LSBC is one of the greatest faults affecting both targets. Stand out since the magnitudes of the impact
Ali Al-Baghdadi   +2 more
doaj   +1 more source

Fault-Ride-Through Approach for Grid-Tied Smart Transformers without Local Energy Storage

open access: yesEnergies, 2021
The Smart Transformer (ST) is being envisioned as the possible backbone of future distribution grids given the enhanced controllability it provides. Moreover, the ST offers DC-link connectivity, making it an attractive solution for the deployment of ...
Justino Rodrigues   +2 more
doaj   +1 more source

An Unbalanced Penalty SVM for Fault Identification of BOSS [PDF]

open access: yesProceedings of the 2nd International Conference on Management Science and Industrial Engineering (MSIE 2013), 2013
In order to solve classification error problems of support vector machine, which was used in the telecommunication business supporting system (BOSS), caused by the unbalanced ratio of positive samples, which stand for proper states of BOSS, and negative samples, which stand for the improper states, an unbalanced penalty SVM algorithm was proposed.
Bo Li, Minjing Peng, Zhifeng Chen
openaire   +1 more source

Voltage-Based Current Limitation Strategy to Preserve Grid-Forming Properties Under Severe Grid Disturbances

open access: yesIEEE Open Journal of Power Electronics, 2023
Grid-forming (GFM) converters are a promising solution to enable large scale integration of renewable energy sources into the power system. However, due to the intrinsic voltage-source behaviour of GFM converters, current limitation during large grid ...
Anant Narula   +5 more
doaj   +1 more source

Development of an Experimental Scaled-Down Frequency Dependent Transmission Line Model

open access: yesIEEE Access, 2021
The penetration of power electronic based equipment in the power grid has increased the co-occurrence of electromechanical and electromagnetic transients.
Kiran Kumar Challa, Gurunath Gurrala
doaj   +1 more source

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