构网型直驱风力发电机组比例优化配置分析  

Analysis of Optimal Proportion Configuration of Grid Forming Direct Drive Wind Turbine

作　　者：王奕宁 向往[1] 张浩博 贺永杰 文劲宇[1] WANG Yining;XIANG Wang;ZHANG Haobo;HE Yongjie;WEN Jinyu(State Key Laboratory of Advanced Electromagnetic Technology(Huazhong University of Science and Technology),Wuhan 430074,Hubei Province,China)

机构地区：[1]强电磁技术全国重点实验室(华中科技大学),湖北省武汉市430074

出　　处：《电网技术》2025年第2期490-500,I0030,I0031,共13页Power System Technology

基　　金：国家重点研发计划项目(2022YFB2405400);国家自然科学基金项目(52237004)。

摘　　要：传统风电机组采用跟网型控制策略,难以主动支撑新型电力系统稳定运行,而基于构网型控制的风电机组具有弱电网稳定运行的能力。在未来风电场建设过程中,跟网型风机和构网型风机混合运行是兼具经济性与技术优势的方案。然而,如何确定风电场中构网型风机的比例,目前的相关研究还较少。对风电场并网系统进行了详细建模,定义了等效短路比来衡量风电场所接入电网的强度,探究了不同构网型风机比例下风电场所能稳定运行的临界等效短路比。此外,分析了无功-电压下垂控制、电网阻抗角和构网型风机位置分布等因素对构网型风机比例配置的影响机理。最后,利用电磁暂态模型和小信号模型对上述结论进行了仿真验证。The traditional wind turbines(WTs)adopt grid following control(GFL),which suffers from instability issues under weak grid conditions and cannot support the new power system,while grid forming control(GFM)based wind farms can stably integrate with weak grids.Regarding future wind farm utilization prospects,the mixed operation of GFL and GFM WTs is a promising method with economic and technical advantages.However,there is research on determining the proportion configuration of GFM WT in wind farms.In this paper,a wind farm integration system is modeled in detail.Then,the equivalent short-circuit ratio(ESCR)is defined to evaluate the strength of the integrated AC grid.On this basis,the critical ESCR(CESCR)that maintains the system critically stable under different proportions of GFM WT is explored.In addition,three important factors affecting the proportion of GFM WT,such as the Q-V droop control,the impedance angle of the grid,and the location distribution of GFM WT,are analyzed.Finally,the simulations in the electromagnetic transient and small-signal models are carried out to verify the above analysis.

关 键 词：构网型控制 小信号稳定性 风电场 构网型风机比例 位置分布 

分 类 号：TM721[电气工程—电力系统及自动化]