Power‐oscillation evaluation in power systems with high penetration of renewable power generation based on network virtual inertia

Liu, Cheng; Cai, Guowei

doi:10.1049/iet-rpg.2018.5306

Cited by 13 publications

(6 citation statements)

References 24 publications

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“…The above references only analyze the equipment-level calculation methods of inertia, lacking the system-level calculation methods. Reference [14] proposes a new network virtual inertia method to evaluate the power oscillation and analyzes the network virtual inertia of power systems with a high penetration rate of renewable energy generation, however, the reference focuses on theoretical analysis, which cannot better guide the actual power grid dispatching operation [14]. For the primary frequency modulation index, reference [15] analyzes the primary frequency modulation from the static point of view, which is reflected in the relationship curve between the power of the prime mover and its speed δ to describe the primary frequency modulation capability, but this method only considers the static characteristics of primary frequency modulation, and does not consider the dead band link [15].…”

Section: Introductionmentioning

confidence: 99%

Study on Quantitative Evaluation Index of Power System Frequency Response Capability

2022

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Frequency stability is an important factor for the safety and stability of the power system operation. In a traditional power system, the operation stability is ensured by the inertia response, primary frequency modulation, and secondary frequency modulation. In recent years, in order to achieve the goal of carbon neutralization and carbon peaking, China has made great efforts in new energy development. With large-scale new energy connected to the power grid, the proportion of traditional conventional synchronous units has gradually declined. At the same time, a large number of power electronic devices have been used in the power grid, which led to the capability decline of the inertia response and primary frequency modulation. For example, the East China Power Grid has experienced a sharp frequency drop in such an environment. In order to solve the above problems, the operation principle and control mode of various new energy resources are analyzed in this paper. Moreover, the process and principle of power grid frequency response are studied and the evaluation index of frequency response capability is proposed. The research results can quantitatively evaluate the system inertia response and primary frequency modulation level and provides a judgment tool for dispatching operators and system planners.

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Section: Introductionmentioning

confidence: 99%

Study on Quantitative Evaluation Index of Power System Frequency Response Capability

2022

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“…In the last two decades, electric power systems have experienced very significant changes in their operational requirements, mainly due to a growing share of non-conventional renewable energy in the electricity generation mix, along with the operation of grids with a higher degree of complexity [1][2][3]. From the beginning of the massive electrical generation industry at the beginning of the 20th century, conventional synchronous generators have been responsible for guaranteeing frequency stability [4], among other tasks within the operation of a power system.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Control Strategies Based on Virtual Inertia for the Improvement of Frequency Stability in an Islanded Grid with Wind Generators and Battery Energy Storage Systems

2021

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Rising levels of non-synchronous generation in power systems are leading to increasing difficulties in primary frequency control. In response, there has been much research effort aimed at providing individual electronic interfaced generators with different frequency response capabilities. There is now a growing research interest in analyzing the interactions among different power system elements that include these features. This paper explores how the implementation of control strategies based on the concept of virtual inertia can help to improve frequency stability. More specifically, the work is focused on islanded systems with high share of wind generation interacting with battery energy storage systems. The paper presents a methodology for modeling a power system with virtual primary frequency control, as an aid to power system planning and operation. The methodology and its implementation are illustrated with a real case study.

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“…[27] implies on oscillation of power due to ferroresonance and SSR in utility system. In addition to that, a novel network virtual-inertia method is proposed to evaluate the power oscillation in the system with high penetration of renewable power generations [28].…”

Section: Introductionmentioning

confidence: 99%

A review on oscillations in Wind Park due to ferroresonance and subsynchronous resonance

Rezaei

Aref

Anaraki

2021

IET Renewable Power Gen

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High penetration of renewable rotary generations like wind turbine to utility system causes contribution in power oscillations due to occurrence of different phenomena. Ferroresonance and subsynchronous resonance (SSR) in utility system are able to lead in power oscillation, instability of the system and devastating impact on rotary generators. Hence, investigation on impact of such oscillations on operation of nearby renewable rotary generations, like DFIG (doubly fed induction generator) in Wind Park seems to be beneficial to attain insightful guidelines for future of research in this field. SSR causes increasing the voltage, thus, it brings about saturation of transformer core and results in occurrence of ferroresonance. Ferroresonance causes frequency difference between two points in the network and consequently power oscillation, which is superimposed on torsional oscillation in SSR. Therefore, as SSR and ferroresonance encounter each other, they are investigated under one work to scrutinize impact of such phenomena on behaviour of DFIG. The results show deviation of electrical waveforms and devastating stress on mechanical parts of DFIG rotary components due to huge magnitude of electrical and mechanical quantities in effect of SSR and ferroresonance.

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Power‐oscillation evaluation in power systems with high penetration of renewable power generation based on network virtual inertia

Cited by 13 publications

References 24 publications

Study on Quantitative Evaluation Index of Power System Frequency Response Capability

Study on Quantitative Evaluation Index of Power System Frequency Response Capability

Analysis of Control Strategies Based on Virtual Inertia for the Improvement of Frequency Stability in an Islanded Grid with Wind Generators and Battery Energy Storage Systems

A review on oscillations in Wind Park due to ferroresonance and subsynchronous resonance

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