CAJ | 학술논문

电力系统输电过程中有一定概率产生次同步振荡（subsynchronous oscillation ，SSO），这种振荡极易造成汽轮发电机组的大轴损毁，准确分析系统的次同步振荡特性对其防止和抑制有重要意义。高压直流输电由于其闭环控制的影响，也会使系统产生次同步振荡现象。因此研究高压直流次同步振荡及其抑制措施问题具有重要的意义。以CI-GRE高压直流输电模型为基础，结合IEEE第一谐振模型，搭建高压直流输电系统，然后对其发电机电磁转矩、各轴段扭矩进行分析。最后通过相位补偿原理设计SSDC进行抑制次同步振荡。
전력계통수전과정중유일정개솔산생차동보진탕（subsynchronous oscillation ，SSO），저충진탕겁역조성기륜발전궤조적대축손훼，준학분석계통적차동보진탕특성대기방지화억제유중요의의。고압직류수전유우기폐배공제적영향，야회사계통산생차동보진탕현상。인차연구고압직류차동보진탕급기억제조시문제구유중요적의의。이CI-GRE고압직류수전모형위기출，결합IEEE제일해진모형，탑건고압직류수전계통，연후대기발전궤전자전구、각축단뉴구진행분석。최후통과상위보상원리설계SSDC진행억제차동보진탕。
There is a certain risk of subsynchronous oscillation ( SSO) in power system transmission which is easy to damage the shaft of turbo generator , so it is of great significance to prevent and suppress subsynchronous oscillation by the accurate a -nalysis of its characteristics .Because of its close loop control in high voltage direct current (HVDC) transmission, it will also make the system produce the subsynchronous oscillation .Therefore, it is of important significance to research the subsynchron-ous oscillation problem caused by HVDC and how to effectively control .Based on CIGRE HVDC model and combined with IEEE the first SSR model , the HVDC subsynchronous oscillation system is established , and then each shaft of electromagnetic torque and the torque in the generator are analyzed .Finally, the subsynchronous damping controller (SSDC) is designed with phase compensation principle in order to suppress subsynchronous resonance .