电力系统自动化2025，Vol.49Issue(14)：31-42,12.DOI:10.7500/AEPS20241202007
含跟网型电源的多馈入系统暂态稳定性评估及影响因素分析
Transient Stability Evaluation and Influencing Factor Analysis of Multi-infeed System with Grid-following Power Source
摘要
Abstract
With the continuous increase in the scale of renewable energy generation connected to the power grid via synchronization mode with phase-locked loops,the transient characteristics of new power systems have been profoundly changed.In order to solve the transient stability problems of multiple grid-following(GFL)power sources feeded in any AC power grids,firstly,the large-disturbance mathematical model for multi-infeed GFL system is derived based on the grid structure of systems;secondly,the transient synchronization stability mechanism of the multi-infeed GFL system is defined in combination with the transient response characteristics of GFL power sources and control interaction between power sources.Then,a fast solution method for the stability equilibrium point of multi-infeed GFL system is proposed,and the corresponding stability margin evaluation index is given.On this basis,the main factors and rules influencing the transient synchronization stability of systems are analyzed comprehensively.Finally,case verification is conducted based on the modified IEEE 39-bus system.The simulation results show that the proposed evaluation index can accurately reflect the transient synchronization stability of the multi-infeed GFL system,and the correctness of the influencing rule analyis of the transient synchronization stability is verified.关键词
跟网型电源/新能源/多馈入系统/暂态同步稳定性/稳定裕度Key words
grid-following power source/renewable energy/multi-infeed system/transient synchronization stability/stability margin引用本文复制引用
张添,姚骏,杨东,金容宇,赵林生,谢海..含跟网型电源的多馈入系统暂态稳定性评估及影响因素分析[J].电力系统自动化,2025,49(14):31-42,12.基金项目
智能电网国家科技重大专项资助项目(2024ZD0801400) （2024ZD0801400）
国家电网公司科技项目(52272224000V). This work is supported by Smart Grid-National Major Science and Technology Project of China(No.2024ZD0801400)and State Grid Corporation of China(No.52272224000V). （52272224000V）
