Ambient-Measurement-Based Equivalent Inertia Constant Identification Via Tikhonov Regularization Algorithm

Mo, Ruo; Deng, Xiaoyu; Liu, Muyang; Chang, Xiqiang

doi:10.1109/rest54687.2022.10023118

Cited by 1 publication

(1 citation statement)

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“…One of the significant results is the decreasing frequency stability of power systems. The operating frequency of low-inertia IBR-leading systems is vulnerable to any disturbance; the rate of change of frequency (RoCoF) will rapidly increase following a contingency, which leads to large frequency deviations and even the cascading failure of the system [5][6][7].…”

Section: Introduction 1motivation and Backgroundmentioning

confidence: 99%

Review of RoCoF Estimation Techniques for Low-Inertia Power Systems

Deng

Wang

et al. 2023

Energies

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As the traditional generation is gradually replaced by inverter-based resources, a lack of rotational inertia is now a common issue of modern power systems, which leads to an increasingly larger rate of change of frequency (RoCoF) following contingencies and may result in frequency collapse. As a crucial index of the frequency security and stability of power systems, the accurate estimation of the RoCoF can be a foundation for the development of advanced operations and control techniques of the future power system. This paper firstly analyzes the role of the RoCoF in typical blackouts occurring in recent years and discusses the physical and numerical nature of the RoCoF; then, by introducing the frequency spatial distribution of the power system, the paper discusses the concept of the “center” RoCoF that can present the frequency security and stability of the entire system. The estimation and prediction techniques of the maximal power system RoCoF following a contingency and the existing real-time tracking techniques of the power system RoCoF are comprehensively reviewed. Finally, the open questions and related research topics of the RoCoF estimation are discussed.

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Section: Introduction 1motivation and Backgroundmentioning

confidence: 99%