Results 21 to 30 of about 106,416 (291)

Grid-Synchronization Stability of Converter-Based Resources—An Overview

open access: yesIEEE Open Journal of Industry Applications, 2020
This paper presents an overview of the synchronization stability of converter-based resources under a wide range of grid conditions. The general grid-synchronization principles for grid-following and grid-forming modes are reviewed first. Then, the small-
Xiongfei Wang   +5 more
doaj   +1 more source

Coordinated Control Strategy for Current Inner Loops to Enhance Transient Synchronization Stability During LVRT Under Symmetrical Faults [PDF]

open access: yesDianli jianshe
[Objective] Grid-following converters (GFL) are widely employed in renewable energy grid integration systems. When grid faults cause voltage sags,the system enters a low voltage ride-through (LVRT) process.
SUN Li, ZHI Tianyang, LIU Hongbo, MA Chenglian
doaj   +1 more source

Infeasibility Analysis of Half-Wavelength Transmission Systems

open access: yesEnergies, 2018
This paper analyzes the infeasibility of half-wavelength transmission systems in the aspects of power-frequency overvoltage and synchronization stability. The circuit model of the long-distance transmission system is established at first for steady-state
Zheng Xu, Jian Yang, Nengjin Sheng
doaj   +1 more source

Synchronous clock system of transient electromagnetic based on GPS and OCXO

open access: yesGong-kuang zidonghua, 2017
In view of problems of poor long-term stability of OCXO and susceptibility to interference and poor short-term stability of GPS, synchronous clock system of transient electromagnetic based on GPS and OCXO was designed.
CHEN Yuanyuan, LIU Yuchu
doaj   +1 more source

Transient synchronization stability analysis of wind farms with MMC-HVDC integration under offshore AC grid fault [PDF]

open access: yes2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021), 2021
The MMC-HVDC connected offshore wind farms (OWFs) could suffer short circuit fault (SCF), whereas their transient stability is not well analysed. In this paper, the mechanism of the loss of synchronization (LOS) of this system is analysed considering the
Yu Zhang   +5 more
semanticscholar   +1 more source

Interfacing Synchronous Machine Model Including Stator Transients With Network for Stability Studies [PDF]

open access: yesIEEE Transactions on Power Systems, 2023
A detailed multi-time scale model of synchronous machines (SM) with stator transients is necessary to capture the complex interactions in inverter-integrated power systems. The conventional detailed SM model, including stator transients, is incompatible with that of the step-up transformer in the dq domain as both are modeled as current sources in ...
Bandopant Pawar   +3 more
openaire   +2 more sources

Research on Synchronization Control of Distributed Generation Based on Second-Order Unified Model

open access: yesZhongguo dianli, 2023
The existing grid connection controls of distributed generation inverters are mainly classified into the grid-following (GFL) control and the grid-forming (GFM) control.
Yan HUANG   +5 more
doaj   +1 more source

Review of synchronization control methods for grid-forming VSC-HVDC transmission systems

open access: yesZhejiang dianli
Focusing on the synchronization control of grid-forming flexible HVDC (high-voltage direct current) transmission systems, this paper first analyzes the requirements for grid-forming control in flexible HVDC systems and reviews the current application ...
LI Lanfang   +5 more
doaj   +1 more source

The Transient Stability Study of a Synchronous Generator Based on the Rotor Angle Stability

open access: yesInternational Journal of Electrical and Computer Engineering (IJECE), 2015
Transient stability is an important aspect in the operation of electrical power system. In case of fault occurs in the system, the determining of fault clearing time of circuit breaker is considered one of the main factors to ensure power transfer of the system.
Selwa Fetissi, Djamel Labed, Imen Labed
openaire   +2 more sources

Somatostatin receptor 4 (SSTR4) is a tumor suppressor in cutaneous and head & neck squamous cell carcinomas

open access: yesMolecular Oncology, EarlyView.
This study identifies somatostatin receptor 4 (Sstr4) as a critical tumor suppressor against skin and head/neck cancers (HNSCC, cSCC, and BCC). The loss of Sstr4 removes a check on cell growth, causing hyperactivation of the MAPK‐ERK signaling pathway (↑).
Ali Taqvi   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy