Electromechanical Transient Modeling and Control Strategy of Decentralized Hybrid HVDC Systems

Guoteng Wang, Huangqing Xiao, Liang Xiao, Zheren Zhang and Zheng Xu
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Guoteng Wang: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Huangqing Xiao: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Liang Xiao: China Southern Grid Power Dispatching and Control Center, Guangzhou 510000, China
Zheren Zhang: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Zheng Xu: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China

Energies, 2019, vol. 12, issue 15, 1-17

Abstract: 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.

Keywords: electromechanical transient model; control strategy; decentralized hybrid HVDC system; line commutated converter (LCC); modular multilevel converter (MMC) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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