Small-signal Modeling Method of Hybrid Multi-terminal HVDC System

被引：0
|
作者：
Zheng A. [1 ]
Guo C. [1 ]
Yin Z. [1 ]
Zhao C. [1 ]
机构：
[1] State Key Laboratory for Alternate Electrical Power System With Renewable Energy Sources (North China Electric Power University), Changping District, Beijing
来源：
Dianwang Jishu/Power System Technology | 2019年 / 43卷 / 11期
基金：
中国国家自然科学基金;
关键词：
H-MTDC; LCC; MMC; Small-signal model;
D O I：
10.13335/j.1000-3673.pst.2019.0125
中图分类号：
学科分类号：
摘要：
A general small-signal modeling method was proposed for hybrid multi-terminal HVDC system (H-MTDC) using line commutated converter (LCC) for rectifier station and modular multilevel converter (MMC) for inverter station respectively. The modeling process divided the H-MTDC system into three parts: DC line, LCC subsystems and MMC subsystems. These parts were independently modeled and connected with connection variables to form a complete small signal model of the system. Then, based on the proposed modeling method, a small-signal model was established for a hybrid three-terminal HVDC transmission system. Correctness of the small-signal modeling method was verified by comparing the simulation results of the small-signal model in MATLAB with the simulation results of the electromagnetic transient model in PSCAD/EMTDC. Finally, by using eigenvalue analysis method, the influence of the control system parameters of three converter stations on the small disturbance stability of hybrid three-terminal HVDC system was studied. The modeling method provides valuable guidance for establishment of small-signal models of H-MTDC systems and subsequent analysis. © 2019, Power System Technology Press. All right reserved.
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收藏
页码：4087 / 4096
页数：9
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