Results 21 to 30 of about 201,222 (195)

Current-limiting droop controller with fault-ride-through capability for grid-tied inverters [PDF]

, 2017
In this paper, the recently proposed current-limiting droop (CLD) controller for grid-connected inverters is enhanced in order to comply with the Fault-Ride-Through (FRT) requirements set by the Grid Code under grid voltage sags.
Konstantopoulos, G.C., Mayfield, M., Nikolaidis, V.C., Paspatis, A.G.   +3 more
core   +1 more source

The Architecture and Key Technologies of Fault Inversion System for Hybrid UHV AC/DC Power Grid

Zhongguo dianli, 2020
The security and stability problems of power grid have become increasingly prominent for the complexity and fragility of large-scale hybrid AC/DC. In order to quickly and accurately simulate the fault characteristics of power grid, a fault inversion ...
Bing WANG, Yupei JIA, Jianfeng YAN, Yiding JIN   +3 more
doaj   +1 more source

A Comparative Study of Vector Control and Model Predictive Control Technique for Grid Connected Battery System [PDF]

, 2018
Advancements made to battery energy storage technologies have led to increasing integration of battery systems with the grid. This paper presents a comparative study of the well-established vector control technique and the model predictive current ...
Bayne, Stephen, Bilbao, Argenis, Noureen, Subrina Sultana, Shamim, Nimat, Subburaj, Anitha Sarah   +4 more
core   +2 more sources

Estimation of inertia demand in power systems considering wind power virtual inertia

International Journal of Electrical Power & Energy Systems
The high proportion of renewable energy integrated into the grid through numerous power electronic devices has reduced the overall system inertia level and operational stability and caused poor disturbance resistance.
Hongchun SHU, Haifei DONG, Jing CHEN, Guangxue WANG, Xi WANG, Botao SHI   +5 more
doaj   +1 more source

Adaptability analysis of distance protection in flexible low frequency ac outgoing transmission line of wind power system

Results in Engineering
The extension of offshore wind power to medium and far seas has promoted the development of flexible low-frequency AC transmission (FLFAC) technology. However, the fault responses of the power electronic interface-type power sources (wind turbines and ...
Yue Dai, Hongchun Shu, Yutao Tang, Haoming Liu   +3 more
doaj   +1 more source

Modeling and Recognition of Smart Grid Faults by a Combined Approach of Dissimilarity Learning and One-Class Classification

, 2014
Detecting faults in electrical power grids is of paramount importance, either from the electricity operator and consumer viewpoints. Modern electric power grids (smart grids) are equipped with smart sensors that allow to gather real-time information ...
De Santis, Enrico, Livi, Lorenzo, Rizzi, Antonello, Sadeghian, Alireza   +3 more
core   +1 more source

Modelling and control of a variable-speed switched reluctance generator based wind turbine [PDF]

, 2007
This paper studies the system modelling and control aspects of switched reluctance generator (SRG) based variable speed wind turbines. A control system is implemented to provide proper operation of the SRG as well as power tracking capabilities for ...
Littler, T., McSwiggan, D., Xu, L.
core   +1 more source

Time-domain impedance pilot protection of MMCHVDC transmission line based on modulus characteristics

Results in Engineering
Flexible HVDC transmission systems provide flexible and efficient solutions for new energy grid integration and asynchronous interconnection of AC systems, and represent a major trend in the future development of power grids.
Yue Dai, Hongchun Shu, Haoming Liu, Xuefei Zhang, Yutao Tang, Na An   +5 more
doaj   +1 more source

An alternative current-error based control for VSC integration to weak grid [PDF]

, 2018
An enhanced current control strategy is proposed for voltage source converters for the integration to weak grids. The control derives from the current-error based vector control.
Chen, Dong, Givaki, Kamyab, Xu, Lie, Xu, Yan   +3 more
core   +1 more source

A method for locating fault sections of power optical communication network intelligent operation and maintenance equipment off-grid based on Dijkstra algorithm

Dianxin kexue, 2023
In order to determine the mapping relationship between the off grid fault section and the fault current distribution, and find the shortest path between the off grid fault section and the fault current distribution, an off grid fault section location ...
Hailong ZHANG, Bo LI, Najuan JIA
doaj   +2 more sources