兴安直流输电工程单极投运后次同步振荡问题及抑制措施  

The Subsynchronous Oscillation Problem and the Damping Control Strategy at the Monopolar Operation Stage of Xingan HVDC Transmission Project

作　　者：杨煜 胡蓉 洪潮 任成林 

机构地区：[1]南方电网技术研究中心,广东广州510623 [2]南方电网超高压输电公司,广东广州510623

出　　处：《南方电网技术》2007年第2期25-30,共6页Southern Power System Technology

摘　　要：根据兴安(贵广二回)直流输电工程单极投运后南方电网的实际情况,采用机组作用系数法和时域仿真方法,分析了发生次同步振荡风险高的运行方式。针对如何采用阻尼控制器抑制次同步振荡的问题,重点分析了采用整流站就地控制策略的可行性,并提出工程实用的控制器设计方法。利用PSCAD/EMTDC仿真研究,验证了所设计的直流输电次同步振荡阻尼控制器的有效性。Based on the Mono-Pole operation stage of Xingan HVDC transmission project （Oui-Ouang Ⅱ）, the operation mode most likely going with subsynchronous oscillation （SSO） is analyzed with UIF calculation and time-domain simulation. Aiming at the issue of how to utilize subsynchronous damping controllers （SSDC） to mitigating subsynchronous oscillation, this paper studies the feasibility of local-system-stable control strategy at the converter station, and presents a method for designing actually working controllers. A PSCAD/EMTDC simulation has been carded out on the mono-pole risky cases, demonstrating the effectiveness of our designed subsynchronous damping controllers.

关 键 词：高压直流输电 次同步振荡 次同步阻尼控制器 扭应力保护 

分 类 号：TM721.1[电气工程—电力系统及自动化] TM712