Zobrazeno 1 - 10
of 251
pro vyhledávání: '"UHVDC transmission"'
Publikováno v:
Zhejiang dianli, Vol 43, Iss 10, Pp 103-113 (2024)
This paper focuses on the inverter station of ultra-high voltage direct current （UHVDC） transmission system with a hybrid cascaded structure. Based on its primary topological structure， adhering to the principles of protection without dead zone
Externí odkaz:
https://doaj.org/article/a8db8cdc6d714e4280b48b8af16e022f
Publikováno v:
Zhejiang dianli, Vol 43, Iss 5, Pp 83-90 (2024)
The impact of high-voltage direct current （HVDC） transmission systems on inter-provincial power flow models is addressed by proposing a coordinated trading method for the inter-provincial electricity spot market （hereinafter referred to as the
Externí odkaz:
https://doaj.org/article/43d5e4963a46448bbcf761d4911bc797
Publikováno v:
CSEE Journal of Power and Energy Systems, Vol 10, Iss 3, Pp 891-902 (2024)
A hybrid UHVDC transmission system applying LCC as the rectifier and MMC as the inverter combines the advantages of both converter types, which makes this protection scheme more complicated. A new pilot protection scheme for a three-terminal hybrid D
Externí odkaz:
https://doaj.org/article/c5627abdb42744fd8dcd0718218ded77
Publikováno v:
IET Generation, Transmission & Distribution, Vol 17, Iss 24, Pp 5473-5485 (2023)
Abstract The existing relay protections for line‐commutated converter (LCC)‐ultra high voltage DC (UHVDC) transmission lines are insufficient in protection sensitivity and operation speed. The travelling wavefront fault distance information can b
Externí odkaz:
https://doaj.org/article/534f2e062e194dc5ad210505bdd4e4c9
Publikováno v:
Energy Reports, Vol 9, Iss , Pp 1826-1835 (2023)
High-voltage semiconductor devices such as thyristors, due to the high voltage applied, when encountering atmospheric neutrons in the operating state, may appear single event burnout due to charge multiplication in high-altitude areas. The atmospheri
Externí odkaz:
https://doaj.org/article/78b74a259f7542be8fa08fa20bedfb94
Publikováno v:
Energy Reports, Vol 9, Iss , Pp 1850-1860 (2023)
As one of the principal protections of UHVDC transmission lines, pilot protection requires strict synchronization and small data flow by exchanging the current on both terminals under the limitation of DC protection action rapidity. To solve this pro
Externí odkaz:
https://doaj.org/article/cc009174a58c452b8f24d05785a0f5fe
Publikováno v:
Energy Reports, Vol 8, Iss , Pp 1648-1655 (2022)
Accurately predicting the overvoltage level under typical faults and operating condition in the UHVDC (Ultra High Voltage DC) transmission project is not only beneficial to the insulation coordination design of the system, improving the security and
Externí odkaz:
https://doaj.org/article/a0d77888bfe245b7b5c8cfa92bee06d3
Publikováno v:
Frontiers in Energy Research, Vol 11 (2023)
Recently, in order to reduce carbon emissions and meet climate change targets set by governments worldwide, which has led to the growth of renewable energy sources, such as wind, solar and hydropower energy, more and more ± 800 kV power lines have b
Externí odkaz:
https://doaj.org/article/96463601454a49b08635b8dfb42a0490
Akademický článek
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Publikováno v:
IEEE Access, Vol 8, Pp 122360-122365 (2020)
The rated current of ±800kV Ultra High Voltage Direct Current (UHVDC) Transmission system can be up to 6250A, so that the influence of the DC grounding current of electrode is enormous. It is of great significance to understand the distribution char
Externí odkaz:
https://doaj.org/article/323dd3141859445bbbc28303abe52dda