基于权衡频率极值点的风电频率支撑控制参数配置方法

Proposes a wind power frequency support control parameter configuration method based on trade-off frequency extremum points to minimize frequency deviations across different support stages. Derives a unified time-domain frequency response model incorporating synchronous generators and wind turbines, quantifies post-support power disturbance and rotor speed recovery impact, and establishes an optimization model targeting minimal extremum points. Validated via simulation under varying wind penetration levels.

为兼顾系统在不同频率支撑阶段的频率跌幅,提出一种基于权衡频率极值点的风电频率支撑控制参数配置方法.首先,定性分析风电频率支撑控制参数对系统频率动态响应的影响;其次,推导出考虑同步机与风电参与频率支撑的系统频率动态响应模型的时域表达式,统一不同阻尼比时频率极值点的计算式;随后,基于频率响应模型分析风电机组退出频率支撑时系统所遭受的功率扰动量,得到量化评估风电机组转速恢复阶段系统频率极值点的计算方法;基于此,以最小化系统频率支撑阶段所有频率极值点为目标建立优化模型配置风电频率支撑控制参数.最后,仿真算例验证该方法可在不同风电占比场景下配置频率支撑参数,在保证风电机组频率支撑强度的同时不会因过度释放频率支撑动能而造成严重的系统二次跌落.