摘要
西北电网中某电厂发生低频振荡现象。为了分析振荡产生的原因,对机组各控制环节进行了详细建模分析。利用阻尼转矩法推导出各个控制环节所产生的阻尼水平。分析结果表明,调速器参数设置不当是引发汽轮发电机组的低频振荡原因,同时提出了相应的抑制振荡的有效措施。最后,仿真验证了所提理论的正确性及所提出抑制措施的可行性。
A low-frequency oscillation occurred in a power plant in the Northwest Power Grid.In order to analyze the reasons for the oscillation,the detailed modeling analysis of each control link of the unit was carried out.The damping level generated by each control link was derived by using the damping torque method.The analysis results show that improper setting of governor parameters is the cause of low-frequency oscillation of steam turbine generator unit.The corresponding effective measures to suppress oscillation are put forward.Finally,the simulation verifies the correctness of the proposed theory and the feasibility of the proposed suppression measures.
作者
冯长有
焦春雷
裴建楠
李明
甫日甫才仁
Feng Changyou;Jiao Chunlei;Pei Jiannan;Li Ming;Fu Rifucairen(National Electric Power Dispatching and Control Center,Beijing 100031,China;Electric Power Research Institute,State Grid Xinjiang Electric Power Co.,Ltd.,Urumqi Xinjiang 830001,China;North China Electric Power University,Beijing 102206,China)
出处
《电气自动化》
2023年第6期99-103,共5页
Electrical Automation
关键词
火力发电
调速系统
低频振荡
抑制措施
建模分析
thermal power generation
speed control system
low-frequency oscillation
suppression measures
modeling analysis
