电力系统自动化2024，Vol.48Issue(8)：79-90,12.DOI:10.7500/AEPS20230803004
基于全阶模型的直驱风电机组多时间尺度等效惯量机理建模
Multi-time-scale Equivalent Inertia Mechanism Modeling of Direct-drive Wind Turbines Based on Full-order Model
摘要
Abstract
Constructing the equivalent inertia model of wind turbines is a key basis for quantitative analysis and optimal control of wind farm transient support,especially in the scenario of high-proportion renewable energy power grid with reduced of inertia and degraded frequency characteristics.However,the existing model research often focuses on several links in combination with the analysis goal,but does not establish a complete model of the whole links,and does not reveal the relationship between the reduced-order model and the calculation accuracy at different time scales.Firstly,taking direct-drive wind turbine as the object,based on the comparison of the equivalent inertia of wind power and synchronous machine in mechanism and implementation mode,the dynamic influence of mechanical,control and electrical links on the equivalent inertia of wind power is analyzed,and a full-order frequency response model of the wind turbine is established.Then,based on the singular perturbation theory,the equivalent inertia reduction model considering the dynamics of different time scales is derived,and the relationship between the error and the time scale of the model is derived by applying the Vasilyeva theory.Finally,an electromagnetic transient simulation case is used to verify the effectiveness of the full-order mechanism model and the accuracy of different reduced-order models.关键词
风电机组/等效惯量/多时间尺度/奇异摄动/降阶模型/瓦西里耶娃理论Key words
wind turbine/equivalent inertia/multi-time-scale/singular perturbation theory/reduced-order model/Vasilyeva theory引用本文复制引用
姜继恒,鲁宗相,乔颖,李佳明,程艳,关逸飞,汪挺..基于全阶模型的直驱风电机组多时间尺度等效惯量机理建模[J].电力系统自动化,2024,48(8):79-90,12.基金项目
国家重点研发计划资助项目(2021YFB2400500) （2021YFB2400500）
国家电网有限公司科技项目(光伏/风电场站暂态频率电压主动快速支撑技术). This work is supported by National Key R&D Program of China(No.2021YFB2400500)and State Grid Corporation of China. （光伏/风电场站暂态频率电压主动快速支撑技术）
