±500 kV兴安高压直流外送次同步振荡风险分析  

Risk analysis for sub-synchronous oscillation high-voltage DC ± 500 kV transmission in Xing'an

作　　者：刘颖 常富杰[2] 钱华东[2] 梁新艳[2] 李旺 

机构地区：[1]大唐贵州兴仁发电有限公司,贵州兴义562300 [2]北京四方继保自动化股份有限公司,北京100085

出　　处：《电力大数据》2017年第11期21-25,共5页Power Systems and Big Data

摘　　要：基于EMTDC/PSCAD电磁暂态时域仿真模型,针对贵州兴仁电厂机组经±500 kV兴安直流外送系统,对兴仁电厂机组次同步振荡特性进行研究,评价次同步振荡风险。仿真结果表明在正常的交直流混输、纯交流运行方式下兴仁电厂机组次同步振荡收敛。在直流孤岛某些运行方式下兴仁电厂机组存在次同步振荡的风险,模态1分量缓慢发散,需要考虑采取相应的应对措施。Based on the EMTDC / PSCAD electromagnetic transient simulation model, this paper studies the sob-synchronous oscillation characteristies of Xingren power plant, and evaluates the risk of sub-synchronous oscillation by the ± 500 kV Xingan DC outgoing system of Xingren Power Plant in Guizhou. The simulation resuhs show that the sub-synchronous oscillations converge under the pure AC operation mode and under the normal AC / DC hybrid operation mode. In the case of certain operating modes of the DC island, there is a risk of sub-synchronous oscillation in Xingren power plant, and the 1 component of modal are slowly divergent, so the con＇esponding measures should be taken into consideration.

关 键 词：次同步振荡 风险分析 电气阻尼 EMTDC PSCAD 

分 类 号：TM83[电气工程—高电压与绝缘技术]