电网技术Issue(5)：1341-1345,5.
采用STATCOM与SEDC的多机系统次同步谐振抑制措施
Study on Damping Scheme of Subsynchronous Resonance in a Multi-Machine System by Combination of SEDC With STATCOM
摘要
Abstract
When the outputs of parallel-operated multi steam turbine generator units in the same type are sent out via a transmission line with serial compensation, the subsynchronous resonance (SSR) may occur. When unequally loaded, the shafting torsional vibrations are different one another in amplitudes and phases. Taking a parallel-operated two-machine system composed of generators in the same type for example, the differences between torsional vibrations of the two shaftings under SSR are researched. Time-domain simulation results show that when rotating speed deviations of respective generators are taken as input signals, the torsional vibrations of all shaftings can be damped by using static var compensator (STATCOM) only, however the damping speed is slow; the combined damping measure composed of the STATCOM at grid side as the main means and the supplementary excitation damping control (SEDC) at generator side as the auxiliary means can damp SSR in multi generation unit system rapidly and effectively, meanwhile respective advantages of the two means in damping SSR can be brought into play.关键词
多机系统/次同步谐振/附加励磁阻尼控制器/静止同步补偿器Key words
multi-machine system/subsynchronous resonance (SSR)/supplementary excitation damping control (SEDC)/static synchronous compensator (STATCOM)分类
信息技术与安全科学引用本文复制引用
孙彦龙,班连庚,宋瑞华,项祖涛,杜宁..采用STATCOM与SEDC的多机系统次同步谐振抑制措施[J].电网技术,2013,(5):1341-1345,5.基金项目
国家863高技术研究发展计划重大项目(2011AA05A119)；国家电网公司大电网重大专项资助项目课题(SGCC-MPLG001-2012)。@@@@The National High Technology Research and Development of China(863 Program)(2011AA05A119) （2011AA05A119）
Project Supported by State Grid Corporation of China, Major Projects on Planning and Operation Control of Large Scale Grid(SGCC-MPLG001-2012) （SGCC-MPLG001-2012）
