Probabilistic Power Flow Analysis for Hybrid HVAC and LCC-VSC HVDC System

Shu, Tong; Lin, Xingyu; Peng, Sancheng; Du, Xiao; Chen, Huixiang; Feng, Li; Tang, Junjie; Li, Wenyuan

doi:10.1109/access.2019.2942522

Cited by 34 publications

(23 citation statements)

References 32 publications

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“…Also, for high output impedances, feasible solutions can be found for all the three combinations, while for low output impedances, solutions only exist for FSS. The VSC in USS always have the same active power injection as expressed in (15). Thus, p vsc curves for USS-1 and USS-2 are overlapped in Figure 4(c).…”

Section: Figure 2 Algorithm To Identify Equilibrium Pointsmentioning

confidence: 99%

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On the Solution of Equilibrium Points of Power Systems With Penetration of Power Electronics Considering Converter Limitation

et al. 2021

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Increasing penetration of power electronics is changing the understanding of modern power systems. In particular, current saturation of converters leads to multiple equilibrium points for both normal and short-circuit conditions. This paper aims to identify equilibrium points in power systems with penetration of power electronics. First, a steady-state model of power systems considering the power electronics operation is presented. Then, a general methodology is developed to obtain equilibrium points including all possible combinations of converter current saturation states. A system of equations is defined for each combination and is solved considering the possibility to have single or multiple solutions. This methodology is suitable for steady-state analysis in normal operation and during short-circuit scenarios. Test systems with Voltage Source Converters are used to validate the presented methodology.

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Section: Figure 2 Algorithm To Identify Equilibrium Pointsmentioning

confidence: 99%

“…A sequential AC/DC power flow calculation is presented in [14] considering VSC control modes and current limitation. This AC/DC power flow calculation has also been applied to line-commuted converter (LCC) based system in [15]. In addition, Optimum Power Flow (OPF) algorithms considering a meshed AC/DC grid are presented in [16]- [18].…”

Section: Introductionmentioning

confidence: 99%

On the Solution of Equilibrium Points of Power Systems With Penetration of Power Electronics Considering Converter Limitation

et al. 2021

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“…The LCC-HVDC technology has been extensively used throughout the world for bulk power, long-distance power transmission or as back-to-back asynchronous links. It is an established and mature technology [53].…”

Section: Lcc-hvdc Technologymentioning

confidence: 99%

Electric Power Network Interconnection: A Review on Current Status, Future Prospects and Research Direction

Imdadullah¹,

Alamri

et al. 2021

Electronics

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An interconnection of electric power networks enables decarbonization of the electricity system by harnessing and sharing large amounts of renewable energy. The highest potential renewable energy areas are often far from load centers, integrated through long-distance transmission interconnections. The transmission interconnection mitigates the variability of renewable energy sources by importing and exporting electricity between neighbouring regions. This paper presents an overview of regional and global energy consumption trends by use of fuel. A large power grid interconnection, including renewable energy and its integration into the utility grid, and globally existing large power grid interconnections are also presented. The technologies used for power grid interconnections include HVAC, HVDC (including LCC, VSC comprising of MMC-VSC, HVDC light), VFT, and newly proposed FASAL are discussed with their potential projects. Future trends of grid interconnection, including clean energy initiatives and developments, UHV AC and DC transmission systems, and smart grid developments, are presented in detail. A review of regional and global initiatives in the context of a sustainable future by implementing electric energy interconnections is presented. It presents the associated challenges and benefits of globally interconnected power grids and intercontinental interconnectors. Finally, in this paper, research directions in clean and sustainable energy, smart grid, UHV transmission systems that facilitate the global future grid interconnection goal are addressed.

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“…The UT is used in [23]. As an improved sampling method, Latin hypercube sampling is developed in [24]. In [25], PEM is employed.…”

Section: Introductionmentioning

confidence: 99%

Research on random fuzzy power flow calculation of AC/DC hybrid distribution network based on unified iterative method

Yang

Dong

Liu

et al. 2021

IET Renewable Power Gen

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In recent years, with the promotion of policies and technologies, a large number of distributed generations are connected to the urban distribution network in various forms. At the same time, the flexible DC transmission technology has become mature and gradually applied to the distribution network. In this condition, the AC/DC hybrid distribution networks with flexible regulation ability will be the trend of urban distribution network. This paper accurately considers the loss of voltage source converter, and proposes a unified iterative power flow method for AC/DC hybrid distribution network, which takes the voltage source converter control modes into account. Because of the uncertainties of the distributed generations and loads, a random fuzzy power flow model is proposed, in which cumulant method is applied in the random stage. In the fuzzy stage, the fuzzy simulation technology is applied. Finally, an improved PG&E 69‐Bus system is taken as an example to verify the effectiveness of the unified iterative method and the random fuzzy power flow calculation, and put forward some suggestions for the operation of distribution network with distributed generations.

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Probabilistic Power Flow Analysis for Hybrid HVAC and LCC-VSC HVDC System

Cited by 34 publications

References 32 publications

On the Solution of Equilibrium Points of Power Systems With Penetration of Power Electronics Considering Converter Limitation

On the Solution of Equilibrium Points of Power Systems With Penetration of Power Electronics Considering Converter Limitation

Electric Power Network Interconnection: A Review on Current Status, Future Prospects and Research Direction

Research on random fuzzy power flow calculation of AC/DC hybrid distribution network based on unified iterative method

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