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  • Open Access

    ARTICLE

    Impact of Short-Term Power Shortage from Low Voltage Ride through and DC Commutation Failure on Power Grid Frequency Stability

    Wenjia Zhang*, Sixuan Xu, Wanchun Qi, Zhuyi Peng, Wentao Sun

    Energy Engineering, Vol.122, No.6, pp. 2371-2387, 2025, DOI:10.32604/ee.2025.064160 - 29 May 2025

    Abstract Countries worldwide are advocating for energy transition initiatives to promote the construction of low-carbon energy systems. The low voltage ride through (LVRT) characteristics of renewable energy units and commutation failures in line commutated converter high voltage direct current (LCC-HVDC) systems at the receiving end leads to short-term power shortage (STPS), which differs from traditional frequency stability issues. STPS occurs during the generator’s power angle swing phase, before the governor responds, and is on a timescale that is not related to primary frequency regulation. This paper addresses these challenges by examining the impact of LVRT on… More >

  • Open Access

    ARTICLE

    Research on the Impacts of the Inertia and Droop Control Gains from a Variable-Speed Wind Turbine Generator on the Frequency Response

    Dejian Yang1, Yien Xu1, Tong Zhu1, Yang Wang1, Qiuhan Cao1, Yuang Ma1, Enshu Jin2, Xinsong Zhang1,*, Haochen Sun3,*

    Energy Engineering, Vol.119, No.2, pp. 539-554, 2022, DOI:10.32604/ee.2022.015133 - 24 January 2022

    Abstract System frequency must be kept very close to its nominal range to ensure the stability of an electric power grid. Excessive system frequency variations are able to result in load shedding, frequency instability, and even generator damage. With increasing wind power penetration, there is rising concern about the reduction in inertia response and primary frequency control in the electric power grid. Converter-based wind generation is capable of providing inertia response and primary frequency response; nevertheless, the primary frequency and inertia responses of wind generation are different from those of conventional synchronous fleets; it is not More >

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