Zobrazeno 1 - 10
of 632
pro vyhledávání: '"negative sequence current"'
Publikováno v:
International Journal of Electrical Power & Energy Systems, Vol 158, Iss , Pp 109965- (2024)
The growing penetration of converter interfaced generation creates unprecedented challenges to protection strategies at all voltage levels. This paper proposes a novel Negative Sequence Current Injection (NSCI)-based active protection scheme for isla
Externí odkaz:
https://doaj.org/article/339f66fbd19f44d5a398243189f31d09
Publikováno v:
IEEE Open Journal of Power Electronics, Vol 5, Pp 402-413 (2024)
The accurate control of negative sequence (NS) current distribution among multiple grid-forming (GFM) sources can lower the requirement on NS current capability of the sources. Existing control approaches mainly focus on microgrids (MGs) with fixed p
Externí odkaz:
https://doaj.org/article/33f4ef5834324142b2db124e9331e56d
Publikováno v:
IET Generation, Transmission & Distribution, Vol 17, Iss 19, Pp 4248-4257 (2023)
Abstract In the context of extremely uneven sources and loads in China, several large‐scale power transmission systems have been established. Affected by the small equivalent impedance of the system, the increase of negative sequence currents durin
Externí odkaz:
https://doaj.org/article/9f7ceaaa8b224a71b3964a6736fc2c6c
Publikováno v:
Energy Reports, Vol 9, Iss , Pp 854-860 (2023)
This paper proposes a voltage source converter (VSC) control strategy for the high voltage direct current (HVDC) transmission systems compensating the negative sequence and decaying DC (DDC) components. The mathematical model of the grid fault curren
Externí odkaz:
https://doaj.org/article/d3193316f9024267ad601b6ba27b61eb
Publikováno v:
Energy Reports, Vol 9, Iss , Pp 249-258 (2023)
During the fault of the wind power collection line of the MMC-HVDC system, the amplitude of the fault current may be limited due to the control of the converter, which leads to the severe limitation of traditional protection. In this paper, based on
Externí odkaz:
https://doaj.org/article/bd18d3af72f14d3fb08df478f7efc20b
Publikováno v:
Journal of Marine Science and Engineering, Vol 12, Iss 3, p 383 (2024)
The High Voltage Direct Current (HVDC) transmission technology employing modular multilevel converters (MMCs) can effectively enhance the transmission efficiency and stability of offshore wind farms, thereby aiding the promotion of large−scale util
Externí odkaz:
https://doaj.org/article/81a502a51cfd4f2e90aca5feb77448e7
Akademický článek
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Publikováno v:
Applied Sciences, Vol 13, Iss 23, p 12863 (2023)
With the increased grid-connected capacity of a single-phase distributed power supply, three-phase power unbalance is more likely to occur in a power grid. Three-phase power unbalance can further lead to three-phase voltage unbalance, which can have
Externí odkaz:
https://doaj.org/article/d934908dcd784a7c9aa1c380666ea0da
Publikováno v:
Energies, Vol 16, Iss 22, p 7504 (2023)
The negative-sequence current component and harmonic components generated when an asymmetrical fault occurs in the power grid seriously affect the normal operation of the photovoltaic (PV) grid-connected inverter. In order to suppress the negative-se
Externí odkaz:
https://doaj.org/article/6fbed62a48ee425b8fb953bef56a303e
Publikováno v:
Journal of Modern Power Systems and Clean Energy, Vol 9, Iss 6, Pp 1269-1278 (2021)
This paper presents a controller model of asymmetric current injection for converter-interfaced generators suitable for root-mean-square (RMS) phasor-domain, fundamental-frequency, three-phase, and dynamic simulation tools. The effectiveness of the p
Externí odkaz:
https://doaj.org/article/e708a2842bd5437d9afa0b453af84e2a