综合智慧能源2025，Vol.47Issue(9)：10-17,8.DOI:10.3969/j.issn.2097-0706.2025.09.002
新能源并网电力系统临界惯量线性化计算方法及应用
Linearized calculation method of critical inertia in energy power systems with renewable energy and its application
洪鎏 1吕道鑫 1杨忠涛 1马少武 1姜雪1
作者信息
- 1. 国网甘肃省电力公司酒泉供电公司,甘肃 酒泉 735099
- 折叠
摘要
Abstract
With the increase of new energy sources and converter feed-ins,the equivalent inertia of a power system continuously decreases,leading to instable power systems with high-proportion new energy and massive electronic devices accessed.Critical inertia,the lower limit of the inertia,represents safety boundary of grid frequency,and it is a key parameter in judging the safety of the power grid.However,the solving process is complex since the parameter is nonlinear.In view of this,a linearized calculation method for critical inertia of the energy system with renewable energy is proposed.By introducing the critical inertias corresponding to the two boundary constraints,the lowest frequency and the maximum frequency variation rate,the equivalent rotor motion equation of the grid is established,and the primary frequency response process of a synchronous generator set is linearized,realizing the linearized analytical solution for the critical inertia.Finally,the accuracy of the calculation results is verified through PSASP software simulation executed on an actual power grid model.关键词
临界惯量/频率最低点安全约束/频率变化率安全约束/新能源并网电力系统Key words
critical inertia/safety constraint of the lowest frequency/safety constraint of the frequency variation rate/renewable energy system分类
能源科技引用本文复制引用
洪鎏,吕道鑫,杨忠涛,马少武,姜雪..新能源并网电力系统临界惯量线性化计算方法及应用[J].综合智慧能源,2025,47(9):10-17,8.
