摘要
汽轮发电机组经过交流串补线路送出,经常存在较为严重的次同步谐振(SSR)问题,经济性、完备性的次同步谐振抑制方案设计是解决问题的关键。本文提出一种基于容量分散布置的次同步谐振抑制方案,通过接入发电机定子侧的机端次同步阻尼控制器按照容量分散为多个小容量抑制设备并列运行,同时与转子侧附加励磁阻尼控制器形成冗余配置,从而以较小的投入实现完备的次同步谐振抑制功能。以陕北某电厂送出系统为研究对象,对容量分散设计的抑制方案在严重运行方式下的抑制效果进行仿真验证,结果表明:该方法能够以较好的经济性和完备性,解决汽轮发电机组的次同步谐振问题。
There is often a serious problem of sub-synchronous resonance(SSR)when turbine-generator unit is transmitted via AC series compensated line,and the design of economical and complete sub-synchronous resonance suppression scheme is the key to solve the problem.In this paper,a sub-synchronous resonance suppression scheme based on capacity dispersed arrangement is proposed.Through connecting the generator terminal sub-synchronous damping controller on the generator stator side,the equipment is divided into multiple small-capacity damping devices according to the capacity to run in parallel,at the same time,it forms a redundant configuration with the supplementary excitation damping controller on the rotor side,so as to achieve complete function of sub-synchronous resonance suppression with a small input.Taking the transmission system of a power plant in Northern Shaanxi as the research object,the suppression effect of the suppression scheme under the dispersed capacity design in severe operation mode is verified through simulation,and the results show that:this method can solve the sub-synchronous resonance problem of steam-turbine generator units with better economical effect and completeness.
作者
刘月正
Liu Yuezheng(CHN Energy Shaanxi Deyuan Fugu Energy Co.Ltd.,Fugu Shaanxi 719000)
出处
《能源科技》
2022年第4期42-46,共5页
Energy Science and Technology
基金
国家能源集团科技创新项目(SHGF-18-87)。
关键词
次同步谐振
汽轮发电机组
容量分散布置
机端次同步阻尼控制器
附加励磁阻尼控制器
Sub-synchronous resonance
turbine-generator unit
dispersed capacity arrangement
generator terminal sub-synchronous damping controller
supplementary excitation damping controller
