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Subsynchronous Oscillation Characteristic Analysis of Grid-connected DDWFs Via VSC-HVDC System

被引：0
|
作者：
Shao B. [1 ]
Zhao S. [1 ]
Pei J. [1 ]
Li R. [1 ]
Song S. [1 ]
机构：
[1] State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources, North China Electric Power University, Baoding, 071003, Hebei Province
来源：
Dianwang Jishu/Power System Technology | 2019年 / 43卷 / 09期
关键词：
Aggregation characteristic; DDWF; Eigenvalue method; Source; network and control; SSO; VSC-HVDC;
D O I：
10.13335/j.1000-3673.pst.2018.2567
中图分类号：
学科分类号：
摘要：
In view of the subsynchronous oscillation (SSO) caused by interconnection of direct-drive wind farms (DDWFs) via voltage source converter based high voltage direct current (VSC-HVDC) transmission system, a dynamic mathematical model of the grid-connected system was established. The oscillation modes in the system were analyzed with eigenvalue method. Participation factor analysis revealed that the SSO mode was mainly influenced by direct-drive permanent magnet (DDPM) wind power generation system and VSC-HVDC. The influence of DC-side capacitance of DDPM wind power generation system, AC-side phase reactor of VSC-HVDC, DC-side capacitance and reactance of VSC-HVDC, X/R of wind farm grid-connected impedance and turbine number on damping and frequency characteristics of the SSO were analyzed. Meanwhile, a dynamic model of aggregated equivalent wind farm via VSC-HVDC system was established, and the influence of wind farm aggregation characteristics on system stability was analyzed with eigenvalue method. Besides, the connection of VSC-HVDC was divided into three parts: source, network and control. Then the influence of control characteristics and AC-side network characteristics of VSC-HVDC on SSO characteristics were analyzed under three different operation conditions. A model of grid-connected DDWFs via VSC-HVDC system was built in PSCAD/EMTDC to verify above theoretical analysis. © 2019, Power System Technology Press. All right reserved.
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页码：3344 / 3352
页数：8
相关论文
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