LAPSE:2018.0623
Published Article
LAPSE:2018.0623
Electromechanical Transient Modeling of Line Commutated Converter-Modular Multilevel Converter-Based Hybrid Multi-Terminal High Voltage Direct Current Transmission Systems
Liang Xiao, Yan Li, Huangqing Xiao, Zheren Zhang, Zheng Xu
September 21, 2018
A method for electromechanical modeling of line commutated converter (LCC)-modular multilevel converter (MMC)-based hybrid multi-terminal High Voltage Direct Current Transmission (HVDC) systems for large-scale power system transient stability study is proposed. Firstly, the general idea of modeling the LCC-MMC hybrid multi-terminal HVDC system is presented, then the AC-side and DC-side models of the LCC/MMC are established. Different from the conventional first-order DC-side model of the MMC, an improved second-order DC-side model of the MMC is established. Besides considering the firing angle limit of the LCC, a sequential power flow algorithm is proposed for the initialization of LCC-MMC hybrid multi-terminal HVDC system. Lastly, simulations of small scale and large scale power systems embedded with a three-terminal LCC-MMC hybrid HVDC system are performed on the electromechanical simulation platform PSS/E. It is demonstrated that if the firing angle limit is not considered, the accuracy of the power flow solutions will be greatly affected. Steady state calculation and dynamic simulation show that the developed LCC-MMC hybrid MTDC model is accurate enough for electromechanical transient stability studies of large-scale AC/DC system.
Keywords
electromechanical modeling, hybrid multi-terminal HVDC system, line commutated converter (LCC), modular multilevel converter (MMC), sequential power flow algorithm
Suggested Citation
Xiao L, Li Y, Xiao H, Zhang Z, Xu Z. Electromechanical Transient Modeling of Line Commutated Converter-Modular Multilevel Converter-Based Hybrid Multi-Terminal High Voltage Direct Current Transmission Systems. (2018). LAPSE:2018.0623
Author Affiliations
Xiao L: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China [ORCID]
Li Y: State Grid Jiangsu Electric Power Co., Ltd., Nanjing 210000, China
Xiao H: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China [ORCID]
Zhang Z: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Xu Z: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China [ORCID]
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Journal Name
Energies
Volume
11
Issue
8
Article Number
E2102
Year
2018
Publication Date
2018-08-13
Published Version
ISSN
1996-1073
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PII: en11082102, Publication Type: Journal Article
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LAPSE:2018.0623
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doi:10.3390/en11082102
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Sep 21, 2018
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Sep 21, 2018
 
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Calvin Tsay
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