热力发电2025，Vol.54Issue(3)：1-11,11.DOI:10.19666/j.rlfd.202406169
考虑构网型储能换流器稳定边界的全阶小信号建模及频率支撑特性分析
Full-order small-signal modeling and frequency support characterization for grid-forming energy storage converter considering its stability boundary
摘要
Abstract
Grid-forming energy storage system is expected to solve the problems like insufficient frequency modulation resources and disturbance resistance decline of large-scale new energy-based power grid.However,its active support ability is greatly limited due to its inherent power coupling characteristics,plus power overshoot,oscillation and even instability problems are most likely to occur with parameter variation.To solve this problem,a full-order small signal model for grid-forming energy storage system is developed,its frequency response characteristics are analyzed according to the output power state space model and its characteristic roots.On this basis,by analyzing the sensitivity and participation factors of the state space matrix parameters,the stable boundary of the grid-forming energy storage converter is given,and the influence of key parameters of the grid-forming energy storage converter on its dynamic power coupling,frequency support and other grid related characteristics is clarified.The simulation and semi physical experimental results have verified the correctness and feasibility of the theoretical analysis,providing a basis for the design of grid connected parameters and stable operation of grid-forming energy storage converters.关键词
构网型储能/系统支撑能力/稳定边界/全阶小信号建模/频率响应特性Key words
grid-forming energy storage/system support capability/stable boundary/full-order small-signal modeling/frequency response characteristics引用本文复制引用
杨健,苏小玲,陈来军,赵正奎,杨军..考虑构网型储能换流器稳定边界的全阶小信号建模及频率支撑特性分析[J].热力发电,2025,54(3):1-11,11.基金项目
青海省基础研究计划项目(2022-ZJ-935Q) （2022-ZJ-935Q）
国家自然科学基金项目(52167022) Natural Science Foundation of Qinghai Province(2022-ZJ-935Q) （52167022）
National Natural Science Foundation of China(52167022) （52167022）
