杨黎,兰怡希,林玲,陈晴悦,王鹏,邵孜建
YANG Li,LAN Yixi,LIN Ling,CHEN Qingyue,WANG Peng,SHAO Zijian

• 1:国网浙江省电力有限公司经济技术研究院
• 2:新能源电力系统国家重点实验室(华北电力大学)

摘要(Abstract)：

在风电高渗透发电系统中，准确评估储能的虚拟惯量支撑潜力，充分释放储能的能量储备，使其主动参与电网调频，对保障系统频率安全稳定具有重要作用。为此，首先建立风储发电系统的频率动态响应模型，计算系统的频率安全升降时间和频率偏差极值。其次，考虑储能荷电状态的安全运行条件限制，在频率安全升降时间内量化评估储能的虚拟惯量。在此基础上，基于定频控制提出储能的频率主动支撑技术，充分利用储能在系统频率跌落及恢复期中的频率支撑能力。最后，搭建风电高渗透系统仿真模型进行验证。在所提控制策略下，储能可以提供有效惯量支撑和持续性频率响应，显著改善系统的频率稳定性。
In high-penetration wind power generation systems, accurately assessing the support potential for virtual inertia of energy storage and fully releasing its energy reserves to render the systems active in grid frequency regulation are crucial for ensuring the systems' frequency safety and stability. To achieve this, a dynamic frequency response model for wind-storage power generation systems to calculate the system's time of safe frequency rise and fall and the extreme values of frequency deviation. Next, considering the constraints on the safe operating condition of the state of charge(SOC) during energy storage, the virtual inertia of energy storage during the time of safe frequency rise and fall is quantitatively evaluated. Moreover, an active frequency support technology for energy storage based on fixed-frequency control is introduced, aiming to fully exploit the frequency support capability of energy storage during the frequency drop and recovery periods. Finally, a simulation model of high-penetration wind power generation systems is constructed for validation. Under the proposed control strategy, energy storage can provide effective inertia support and offer sustained frequency response, thereby significantly enhancing the systems' frequency stability.

关键词(KeyWords)： 储能;风力发电;频率响应;虚拟惯量;荷电状态
energy storage;wind power generation;frequency response;virtual inertia;SOC

Abstract:

Keywords:

基金项目(Foundation): 国网浙江省电力有限公司科技项目（5211JY23000A）

作者(Author): 杨黎,兰怡希,林玲,陈晴悦,王鹏,邵孜建
YANG Li,LAN Yixi,LIN Ling,CHEN Qingyue,WANG Peng,SHAO Zijian

DOI: 10.19585/j.zjdl.202406006

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