Results 11 to 20 of about 2,569 (263)
Energy Reports, 2021 The hybrid HVDC system based on line commutated converter and modular multilevel converter is a feasible method to address the common commutation failure at the receiving end of conventional HVDC systems. At present, project Gezhouba–Shanghai in China is
Liangliang Hao +4 more
doaj +1 more source
Energy Reports, 2022 With the continuous improvement of the penetration level of wind power in the power system, the grid-forming mode of wind turbine will gradually become one of the main modes of system synchronization.
Jianzu Hu +4 more
doaj +1 more source
AC Fault Ride Through in MMC-Based HVDC Systems
IEEE Transactions on Power Delivery, 2022 VSC-HVDC systems are being increasingly employed in the power systems. The recently installed HVDC systems have a power capacity similar to traditional power plants. Hence, they are expected to have a similar behaviour as traditional synchronous generators during faults in AC grid, within their limits of course. Recent grid codes require HVDC converter
Saman Dadjo Tavakoli +2 more
openaire +3 more sources
Fault Ride-Through Strategy for GFM Inverters Based on Power Command Constraints [PDF]
Dianli jianshe[Objective] To address the issues of power angle instability and output current overload in grid-forming（GFM）inverter during symmetrical grid faults，this paper proposes a fault ride-through strategy based on power command constraints.
LIU Yiqi, ZHAO Bo, LAN Hao, ZHANG Hengke, WANG Zeyang, WU Yucheng
doaj +1 more source
Frontiers in Energy Research, 2021 Aiming at the problems of DC fault isolation and power surplus in the HVDC system with large-scale wind farm (WF) integration after single-pole grounding fault, this article designs a modified current transfer modular multilevel converter (M-CT-MMC ...
Bo Zhu +5 more
doaj +1 more source
Mechanical Switch Based Adaptive Fault Ride-through Strategy for Power Quality Improvement Device
Energies, 2021 Cascaded H-bridge power quality improving device (PQID) has garnered extensive attention for its flexible electric energy conversion and fast voltage response.
Yu Shen +6 more
doaj +1 more source
An Analytical Short-Circuit Current Calculation Method for Full-Power Wind Turbines under Complete Fault Ride-Through Processes [PDF]
Dianli jiansheAccurate calculation of short-circuit current throughout the fault ride-through process of wind turbines is a critical prerequisite for the analysis and control of modern power systems.
YUAN Shuai, XIAO Jiaan, TAO Jun, CUI Haohan, CHAO Pupu, LI Weixing, A Minfu, WANG Liqiang, ZHONG Ming
doaj +1 more source
DC fault ride through of multilevel converters [PDF]
2016 IEEE Energy Conversion Congress and Exposition (ECCE), 2016 Modular Multilevel Converters (MMC) can provide significant advantages for power transmission applications, however there are remaining challenges trading off DC fault response, losses and controllability. Alternative multilevel converter topologies using combinations of full bridge and half bridge submodules or series switches allow for competitive ...
Geraint Chaffey +4 more
openaire +1 more source
Fault ride‐through strategy for hybrid HVDC with cascaded multi‐infeed MMC inverters
Electronics Letters, 2021 The hybrid HVDC with cascaded multi‐infeed MMC inverters suffers from the fragile characteristic of its MMC inverters and is easy to be over current and over voltage.
Jingbo Zhao +4 more
doaj +1 more source
工程科学与技术, 2023 Modular multilevel converter based high voltage direct current technology (MMC–MTDC) using overhead lines is an effective solution to solve the grid connected consumption of high proportion and long-distance renewable energy.
Yinfeng SUN +5 more
doaj