Zobrazeno 1 - 10
of 1 525
pro vyhledávání: '"UHVDC"'
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:
Frontiers in Energy Research, Vol 12 (2024)
The ultra-high voltage direct current (UHVDC) transmission composed of modular multilevel converters (MMC) is an important technology for large-scale centralized transmission of renewable energy. In UHVDC system, temporary faults in the AC power grid
Externí odkaz:
https://doaj.org/article/d8393b49d80748baa236704aff3769c6
Publikováno v:
IEEE Access, Vol 12, Pp 130334-130346 (2024)
The frequent operation of the switching devices inside the converter valve (mainly composed of thyristors) and other equipment in the converter station of ultra-high voltage direct current (UHVDC) transmission system generates a large number of high
Externí odkaz:
https://doaj.org/article/4527eb5748c54eed96b6c2a18e650750
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:
IEEE Access, Vol 12, Pp 70480-70488 (2024)
The ultra-high voltage direct current (UHVDC) system is widely constructed due to its suitability for large-capacity long-distance transmission, and its losses have become an important part of the power grid losses. However, the overall and subcompon
Externí odkaz:
https://doaj.org/article/35d2e82dc70e4603a2353bf5ceb6a304
Publikováno v:
CSEE Journal of Power and Energy Systems, Vol 10, Iss 2, Pp 772-777 (2024)
Distinction of weak and strong AC grids for emerging hierarchical-infeed LCC-UHVDC systems is important for planning and operation departments. However, accuracy of earlier distinction methods is limited as they were developed by empirical reasoning
Externí odkaz:
https://doaj.org/article/2e00937e11be46b7ab1e15d8ba537813
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:
Frontiers in Energy Research, Vol 12 (2024)
With the large-scale development of renewable energy power, China has faced with the challenges of the reverse regional distribution of wind and solar resources and power load, as well as the intermittency and randomness of renewable energy power. Th
Externí odkaz:
https://doaj.org/article/45716a6075b6495087c087aa9177eced
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