混合直流异步联网系统建模与仿真分析

段锐敏; 闫涵; 文俊; 崔康生; 李蓉; DUAN Ruimin; YAN Han; WEN Jun; CUI Kangsheng; LI Rong

doi:10.16513/j.cnki.10-1427/tk.2017.06.009

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分布式能源 ›› 2017, Vol. 2 ›› Issue (6) : 52-58. DOI: 10.16513/j.cnki.10-1427/tk.2017.06.009

混合直流异步联网系统建模与仿真分析

段锐敏 ¹ ,
闫涵 ² ,
文俊 ² ,
崔康生 ² ,
李蓉 ² ,
DUAN Ruimin ¹ ,
YAN Han ² ,
WEN Jun ² ,
CUI Kangsheng ² ,
LI Rong ²

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Modeling and Simulation Analysis of Hybrid DC Asynchronous Interconnection System

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摘要

In 2016, Southern Power Grid built the first hybrid HVDC project of the world—Luxi BTB (back-to-back) HVDC project. In order to analyze its steady state operation and fault recovery characteristics, this paper establishes a hybrid DC asynchronous interconnection system model including LCC-HVDC and VSC-HVDC in PSCAD/EMTDC simulation platform. Based on Luxi BTB HVDC project, we construct the main circuit and control system mode of LCC-HVDC and VSC-HVDC respectively, which form the hybrid DC asynchronous interconnection system in parallel to simulate and analyze the steady-state operation characteristics of the proposed model system. Then, we investigate the influence of MMC-HVDC on the fault recovery of LCC-HVDC under transient conditions. The results show that the operating waveform of the hybrid DC asynchronous interconnection system is stable under the rated conditions. The parameters and the steady-state performance meet the requirements of the project. When the AC system fault occurs on the inverter side, the commutation failure occurs in LCC-HVDC. MMC-HVDC can play the role on dynamic reactive compensation, which is helpful to restore the faults in LCC-HVDC.

关键词

混合直流异步联网 / 常规直流单元 / 柔性直流单元 / 背靠背 / 建模 / hybrid DC asynchronous interconnection / LCC-HVDC / MMC-HVDC / back-to-back / modeling

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段锐敏, 闫涵, 文俊, 等. Modeling and Simulation Analysis of Hybrid DC Asynchronous Interconnection System[J]. 分布式能源. 2017, 2(6): 52-58 https://doi.org/10.16513/j.cnki.10-1427/tk.2017.06.009

[J]. Distributed Energy Resources. 2017, 2(6): 52-58 https://doi.org/10.16513/j.cnki.10-1427/tk.2017.06.009

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