An overview of stability challenges for power‐electronic‐dominated power systems: The grid‐forming approach

Shakerighadi, Bahram; Johansson, Nils; Eriksson, Robert; Mitra, Pinaki; Bolzoni, Alberto; Clark, Angel; Nee, Hans‐Peter

doi:10.1049/gtd2.12430

Cited by 41 publications

(14 citation statements)

References 131 publications

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“…It has been also observed that the issues related to power-frequency oscillations can affect both the local and inter-area modes of the system. Proper assessment of the control strategy of the non-synchronous generation sources is therefore necessary from an overall systemic point of view, especially when a grid-forming control is implemented [4]. In this case, the damping characteristics of the chosen control strategy must be verified and enhanced with available solutions, if necessary, and control schemes that are capable of providing a positive contribution to the oscillatory characteristics of the power system should be preferred.…”

Section: Case Study: the Colombian Interconnected National Systemmentioning

confidence: 99%

“…These two control concepts and the related stability challenges have been studied in several works [3][4][5][6][7][8][9][10][11][12][13][14]. The work in [3] stresses that the controller settings of converter-based resources significantly impact the stability properties of the system.…”

Section: Introductionmentioning

confidence: 99%

“…It is also indicated that the combination of synthetic inertia and primary frequency response can positively support the frequency dynamics of the system, even if particular attention must be given to the tuning of controllers in the specific operating conditions, since the dynamic response is highly dependent on the controller parameters. In [4], it is remarked that new oscillation modes may be introduced by the control loops of the converter-based generation sources, and that the behaviour of the system might become more oscillatory in the presence of converter-based sources controlled with grid-forming. The work in [5] investigates the interactions between converter-based resources and the power system, considering both a grid-following and a grid-forming control scheme.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Power System Oscillations with Different Prevalence of Grid-Following and Grid-Forming Converters

Musca

González-Longatt

Sánchez³

2022

Energies

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The oscillatory behaviour of the power system is an aspect that is significantly affected by the increasing integration of converter-based generation sources. Several works address the impact of non-synchronous generation on the operation of the system from different points of view, but only a few studies focus on power-frequency oscillations with a prevalence of generation sources interfaced through power electronics. A lack of research can be found in particular in the comparative analysis of the two main control strategies for power converters, namely grid-following and grid-forming. The article aims to contribute to this direction, starting from a theoretical analysis of the two control structures and then examining the case study of an existing transmission system. The research provides a specific insight into the fundamental aspects related to synchronisation mechanism and inertial capabilities of both grid-following with synthetic inertia and grid-forming controls. The difference in the relationship between synchronisation unit and inertial capability is recognised as the fundamental aspect determining the different impacts on the oscillatory characteristics of the system. The observation derived in the theoretical analysis is then applied to an actual power system with a high predominance of converter-based generation, considering the Colombian interconnected national system as a case study.

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Section: Case Study: the Colombian Interconnected National Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Power System Oscillations with Different Prevalence of Grid-Following and Grid-Forming Converters

Musca

González-Longatt

Sánchez³

2022

Energies

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“…At present, the energy uncertainty problem in IES has been actively studied in various literature. Depending on the uncertainty modelling approach, these studies can be divided into two types: (1) the deterministic models based on operating or contingency reserve requirements [11]; (2) the non-deterministic models based on stochastic [12] or robust optimization [13].…”

Section: Literature Reviewmentioning

confidence: 99%

“…In addition, the waste heat flue gas can be recycled by waste heat boilers. Its mathematical model is shown in (1).…”

Section: Gas Turbine Gtmentioning

confidence: 99%

Flexible dispatching method for park‐level integrated energy systems considering energy cascade utilization

Chen

Tai

et al. 2022

IET Generation Trans & Dist

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The complex energy conversion and the volatility of renewable energy/load bring great challenges to the operation of the park‐level integrated energy system (PIES). To overcome this challenge, this paper proposes a multi‐timescale flexible dispatching method to fully exploit the flexibility of PIES in the energy cascade utilization mode. The cascade utilization model for energy flow is firstly established to analyse the coupling and complementary of heterogeneous energy. On this basis, the supply‐demand general equations of multi‐energy flexibility are proposed, which accurately quantify the ability to cope with uncertainty through mutual flexibility. Through coordinated complementation and mutual exchange of multi‐grade flexibility, the system realizes the suppression of random power fluctuations. The scheduling model includes day‐ahead dispatch and intraday multi‐time scale dispatch, which can satisfy the adjustment speed requirements of different energy. Numerical results demonstrate that the proposed method effectively enhances the flexibility and economy of system operation. The flexible demand for energy of all grades can be satisfied. Compared with the flexible dispatch in the triple energy supply structure, the operating cost is reduced by 9.07%.

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Effects of Inductive Load on Photovoltaic Systems

Okpo,

Le Roux,

Okoro

2024

Lecture Notes in Networks and Systems

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The increasing demand for electrical energy, driven by technological advancements in underdeveloped and developing nations, has led to a growing reliance on renewable energy sources. Inductive loads requiring high starting currents can significantly affect power sources. Therefore, it is imperative to investigate the impacts of inductive loads on photovoltaic (PV) systems. This study aims to investigate the major parameters of the asynchronous machine, a typical representation of inductive load rated at 15 kW and 7.5 kW, respectively. With the analysis performed in MATLAB/Simulink, the major parameters investigated include the machine rotor current, rotor speed and rotor electromagnetic torque. The present study will propose strategies to mitigate the impact of inductive loads on PV systems, facilitating the seamless integration of solar PV systems into our energy infrastructure.

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An overview of stability challenges for power‐electronic‐dominated power systems: The grid‐forming approach

Cited by 41 publications

References 131 publications

Power System Oscillations with Different Prevalence of Grid-Following and Grid-Forming Converters

Power System Oscillations with Different Prevalence of Grid-Following and Grid-Forming Converters

Flexible dispatching method for park‐level integrated energy systems considering energy cascade utilization

Effects of Inductive Load on Photovoltaic Systems

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