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Modular multilevel converter based LCL DC/DC converter for high power DC transmission grids. [PDF]
, 2015 This paper presents a modular multilevel converter (MMC) based DC/DC converter with LCL inner circuit for HVDC transmission and DC grids. Three main design challenges are addressed.
Ahmed A. Aboushady +2 more
openalex +4 more sources
电力工程技术, 2022 As the typical provincial transmission power grid,Jiangsu power grid is faced with the pressures and challenges induced from system-integration of rapid developments of renewable energy during the energy transition period,which needs to be upgraded in ...
WANG Zhiwei +5 more
doaj +2 more sources
Stability Comparison Between Grid-forming and Grid-following Based Wind Farms Integrated MMC-HVDC
Journal of Modern Power Systems and Clean Energy, 2023 Grid-forming (GFM) control based high-voltage DC (HVDC) systems and renewable energy sources (RESs) provide support for enhancing the stability of power systems. However, the interaction and coordination of frequency support between the GFM-based modular
Rongcai Pan +5 more
doaj +1 more source
Stability analysis of hybrid synchronization controller based grid forming control
Energy Reports, 2023 Synchronization units are vital for the stable operation of grid-tied converters in generation and transmission. There are two main synchronization units, i.e., phase-locked loop (PLL) and power synchronization controller (PSC), with the corresponding ...
Rongcai Pan +5 more
doaj +1 more source
The Safety Monitoring and Warning System for Live Working Based on ToF Technology
Zhongguo dianli, 2020 Aiming at the deficiency of security monitoring and early warning means and methods for live working in China, a ToF (Time of flight)-based real-time safety monitoring and warning system is proposed for live working.
Wen LI +5 more
doaj +1 more source
IET Generation, Transmission & Distribution, 2023 This paper proposes a transformer type dc power flow controller (DCPFC) based on stacks composed of sub‐modules (SMs). The converter can perform dc power flow control independently on point‐to‐point as well as multi‐terminal connection, which can be ...
Jiuyang Jin +5 more
doaj +1 more source
Journal of Modern Power Systems and Clean Energy, 2021 The two main challenges of medium voltage direct current (MVDC) distribution network are the flexible control of power flow (PF) and fault protection. In this paper, the power flow controller (PFC) is introduced to regulate the PF and inhibit the fault ...
Jianquan Liao +5 more
doaj +1 more source
Control strategy of doubly-fed induction generator during the grid voltage swell
The Journal of Engineering, 2018 This study firstly derives the relationship between the grid voltage and the rotor current of doubly-fed induction generator (DFIG) during the grid voltage swell.
Zou Le +5 more
doaj +1 more source
DC fault isolation study of bidirectional dual active bridge DC/DC converter for DC transmission grid application [PDF]
, 2015 Fast isolation and detection of DC faults is currently a limiting factor in high power DC transmission grid development. Recent research has shown that the role of DC/DC converters is becoming increasingly important in solving various DC grid challenges ...
Aboushady, Ahmed A. +2 more
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Semi-analytical calculation method for parasitic capacitance of high-frequency transformers based on partitioned solution [PDF]
AIP AdvancesThe parasitic capacitance of the windings significantly affects the transmission characteristics of high-frequency transformers, and its accurate calculation is crucial for the optimal design of transformers.
Yongjian Li +5 more
doaj +1 more source