南方电网技术2018，Vol.12Issue(8)：1-7,7.DOI:10.13648/j.cnki.issn1674-0629.2018.08.001
一种典型交直流电力系统中的次同步谐振/振荡问题分析及抑制
Analysis and Suppression of Sub-Synchronous Resonance/Oscillation in a Typical AC/DC Power System
张帆 1洪潮 1黄磊 2杨健1
作者信息
- 1. 直流输电技术国家重点实验室 (南方电网科学研究院), 广州 510663
- 2. 中国南方电网电力调度控制中心, 广州 510663
- 折叠
摘要
Abstract
To reduce the amount of discarded hydropower of Yunnan Power Grid during flood season, a feasibility study on interconnection between Yunnan Power Grid and Guizhou Power Grid is conducted by China Southern Power Grid. For the above research requirements, interaction analysis and suppression technology of sub-synchronous resonance/oscillation ( SSR/SSO) in the AC-DC pow-er grid with thermal power units, fixed series compensations and HVDC transmission system are carried out. Firstly, the frequencies of the SSR/SSO in AC system, which may be caused by the three types of above-mentioned equipment respectively, are theoretically calculated and analyzed, then the possible three types of SSR/SSO modes and their dominant sources are obtained comprehensively, which are verified through the EMTDC fault time domain simulation and comparative analysis. Further, from the perspective of HVDC additional control, an improved design method of DC sub-synchronous damping controller ( SSDC) is proposed according to the characteristics and distribution of the SSR/SSO modes in the power grid. The results of the fault time domain simulation in EMTDC with a newSSDC designed using the above method prove the correctness and effectiveness of the method.关键词
次同步振荡/次同步谐振/频率扫描/次同步阻尼控制器Key words
sub-synchronous oscillation/sub-synchronous resonance/frequency scanning/sub-synchronous damping controller分类
信息技术与安全科学引用本文复制引用
张帆,洪潮,黄磊,杨健..一种典型交直流电力系统中的次同步谐振/振荡问题分析及抑制[J].南方电网技术,2018,12(8):1-7,7.
