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新型电力系统下，风力发电并网规模不断增加，大规模风力发电并网对风力发电参与电力系统调频的能力提出更高要求。目前，风电场主要通过释放风电机组转子动能、超速减载或附加储能装置等方式提高其调频能力。然而，以上调频方法存在调频期间捕获风能损失过大或储能配置成本过高等问题，影响风电场的频率调节效率。针对上述问题，提出利用高风速区风电机组的过载能力实现风电机组与储能系统一次频率协同调节的策略。首先计算风电机组的过载能力，其次优先将调节功率分配给高风速区域的风电机组，再将调节功率分配给储能系统，实现储能系统与风电机组的协同。调频结束后，风电机组利用其过载能力帮助储能系统回收能量。实例分析表明，该策略能够提高风电场的频率调节效率。
Abstract：In the new power system,the scale of wind power integration is constantly increasing,and large-scale wind power integration has put forward higher requirements for the ability of wind power to participate in power system frequency regulation.Currently,wind farms mainly enhance their frequency regulation ability by releasing the kinetic energy of wind turbine rotors,speed reduction load or additional energy storage devices.However,the above frequency regulation methods have problems such as excessive loss of wind energy capture during frequency regulation or high energy storage configuration costs,which affect the frequency regulation efficiency of wind farms. In response to the above problems,a strategy is proposed to achieve primary frequency coordinated regulation between wind turbines and energy storage systems by utilizing the overload capacity of wind turbines in high-wind-speed areas.Firstly,the over-load capacity of wind turbines is calculated.Secondly,the regulation power is preferentially allocated to wind turbines in high wind speed areas,and then allocated to the energy storage system to achieve synergy between the energy storage system and the wind turbines.After the frequency regulation is completed,the wind turbine units help the energy storage system recover energy by utilizing their overload capacity.Case studies show that this strategy can improve the frequency regulation efficiency of wind farms.
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基本信息:
DOI：10.20097/j.cnki.issn1007-9904.2024.10.001
中图分类号:TM614
引用信息:
[1]曲建璋,丁浩天,王毓琦等.计及风电机组短时过载能力的风电场多机协同频率控制策略[J].山东电力技术,2024,51(10):1-9.DOI:10.20097/j.cnki.issn1007-9904.2024.10.001.
基金信息:
国网山东省电力公司科技项目“提升新型电力系统频率安全的新能源主动支撑技术研究与应用”（520626220080）~~