Zobrazeno 1 - 10
of 867
pro vyhledávání: '"power system transients"'
Publikováno v:
International Journal of Electrical Power & Energy Systems, Vol 159, Iss , Pp 110035- (2024)
This paper investigates the high-frequency transformer losses attributed to eddy currents in both conductors and the core. A comprehensive model of a transformer winding is presented, meticulously incorporating skin and proximity effects. The winding
Externí odkaz:
https://doaj.org/article/b5762ab3071f4aa087bbbf5d8f456a79
Autor:
Seyed Hassan Ashrafi Niaki, Zhe Chen, Birgitte Bak‐Jensen, Kamran Sharifabadi, Zhou Liu, Shuju Hu
Publikováno v:
IET Renewable Power Generation, Vol 18, Iss 2, Pp 187-199 (2024)
Abstract Fast progress of High Voltage Direct Current (HVDC) technology has been considerable over the past decades. Emerging Modular Multilevel Converter (MMC) provides power systems with promising solutions to integrate large‐scale renewable ener
Externí odkaz:
https://doaj.org/article/fcfc16e26c8c4acca3b4fe7bffe5cceb
Publikováno v:
IEEE Access, Vol 12, Pp 90552-90560 (2024)
With the expansion in recent power systems, the boost in renewable energy resources with multiple interconnections, overloading of existing power networks, increased load growth, and equipment failures, power system transient instability issues have
Externí odkaz:
https://doaj.org/article/d7c9b4352a47481d841d90fa4f4f2be6
Publikováno v:
IET Generation, Transmission & Distribution, Vol 17, Iss 21, Pp 4810-4825 (2023)
Abstract The protection of traditional high‐voltage capacitor banks relies on an unbalance relay which operates when an internal fuse is blown. However, the unbalance relay cannot indicate the cause of the fault. Thus, an operator wastes time and h
Externí odkaz:
https://doaj.org/article/150b992b031b4050b5444ff0bd7cdac9
Publikováno v:
IET Generation, Transmission & Distribution, Vol 17, Iss 13, Pp 2953-2962 (2023)
Abstract Modular multi‐level converters (MMCs) are a mainstay in many HVDC transmission projects worldwide. Half‐bridge MMC (HB‐MMC) is mostly used in the current project. The large capacitor of sub modules (SMs) is often required in MMC to ens
Externí odkaz:
https://doaj.org/article/600b25bf866e4dc3b59d1d7d937a6d62
Publikováno v:
IET Generation, Transmission & Distribution, Vol 17, Iss 6, Pp 1321-1332 (2023)
Abstract Even though shunt compensation of transmission lines (TLs) is a common practice to limit the overvoltages stemming from the Ferranti effect, it may cause transient and steady‐state resonant overvoltages when one phase is left open due to t
Externí odkaz:
https://doaj.org/article/5c53339ba9c54877a949cb0cc9f1b78b
Publikováno v:
IEEE Open Journal of the Industrial Electronics Society, Vol 4, Pp 534-572 (2023)
In conventional power systems, stability is ensured successfully because of large synchronous generators, where, during transient conditions, the inertia and dynamics of the synchronous generators help to retain stability. On the contrary, inverter-i
Externí odkaz:
https://doaj.org/article/10c89a27f5c94ecd8b45589eb200055a
Akademický článek
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Publikováno v:
Electrical, Control and Communication Engineering, Vol 18, Iss 1, Pp 18-26 (2022)
The major shortcoming in the extraction of electrical energy occurs due to partial shading over a limited area of vast spread solar panels underpinning reduction of efficiency. A number of panels are interconnected in series and parallel to form a ph
Externí odkaz:
https://doaj.org/article/a51da03daa794033b63fa6c3db6f18cf
Autor:
Sihang Wu, Hong Shen, Lei Qi, Bei Zhang, Xiang Cui, Xiangyu Zhang, Xiaoguang Wei, Longlong Chen
Publikováno v:
High Voltage, Vol 7, Iss 3, Pp 523-535 (2022)
Abstract The high current of hybrid DC circuit breaker (HCB) in the process of breaking generates strong transient magnetic field (MF), which may interfere with the normal operation of driver control units (DCUs). Therefore, the analysis for transien
Externí odkaz:
https://doaj.org/article/1572b2b32b2f441b8eb08c0361b111ef