Electromechanical Transient Modeling and Control Strategy of Decentralized Hybrid HVDC Systems

This paper studies the electromechanical transient model and the control strategy of line commutated converter (LCC) and modular multilevel converter (MMC) based decentralized hybrid High Voltage Direct Current (HVDC) Transmission systems. The decentralized hybrid HVDC system is a new type of topolo...

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Bibliographic Details
Published in:Energies (Basel) 2019-07, Vol.12 (15), p.2856
Main Authors: Wang, Guoteng, Xiao, Huangqing, Xiao, Liang, Zhang, Zheren, Xu, Zheng
Format: Article
Language:English
Subjects:
Alternative energy
CAD
Computer aided design
Computer engineering
control strategy
Converters
decentralized hybrid HVDC system
Electrical engineering
Electricity distribution
electromechanical transient model
International conferences
line commutated converter (LCC)
modular multilevel converter (MMC)
Objective function
Optimization
Reactive power
Renewable resources
Reserve capacity
Systems stability
Wind farms
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Summary:This paper studies the electromechanical transient model and the control strategy of line commutated converter (LCC) and modular multilevel converter (MMC) based decentralized hybrid High Voltage Direct Current (HVDC) Transmission systems. The decentralized hybrid HVDC system is a new type of topology, and the related electromechanical transient model and control strategy have not been studied well. In this paper, the electromechanical transient model of a decentralized hybrid HVDC system is devloped through mathematical deduction. This model can be easily implemented in electromechanical transient simulation software and meet the time domain simulation requirements of large-scale systems. Then, in order to ensure the safe absorption of the DC power under various conditions, an optimal power flow model considering the decentralized hybrid HVDC system is proposed. Finally, the electromechanical transient model proposed in this paper is verified by the electromagnetic transient model, and the control strategy is validated in a modified New England 39-bus system.
ISSN:1996-1073
1996-1073
DOI:10.3390/en12152856