南方电网技术2024，Vol.18Issue(7)：95-107,13.DOI:10.13648/j.cnki.issn1674-0629.2024.07.011
考虑新能源不确定性的含DSSC电网静态电压稳定分析
Static Voltage Stability Analysis of Power Grid with DSSC Considering Uncertainty of New Energy Sources
摘要
Abstract
With the proposal of the"dual carbon"goal,China's new energy construction is in a new stage of development.However,the randomness and volatility of high permeability new energy also pose challenges to the static voltage stability analysis of the power system.At the same time,the development of power electronics technology has led to the widespread application of flexible AC transmission system(FACTS)in regulating power flow and improving static voltage stability of power systems.A probability assess-ment method is proposed for static voltage stability of power systems with distributed static series compensator(DSSC)considering the uncertainty of new energy sources.Firstly,the static voltage stability mechanism of the new energy grid connected system is analyzed.Then,the working principle of DSSC is explained,an equivalent power injection model of DSSC is established,and based on this model,the power flow equation containing DSSC is derived.Secondly,based on the power flow calculation equation,a static voltage stability index that can map the uncertainty of new energy sources is proposed,and the Monte Carlo simulation method is used to realize the probability assessment of the static voltage stability index of the system.Finally,through case analysis,it is veri-fied that the uncertainty of high permeability new energy leads to a larger distribution range of static voltage stability indicators in the system and an increase in the probability of system instability.Reasonable configuration of DSSC can effectively improve the static voltage stability of power systems.The proposed method can accurately reflect the impact of new energy uncertainty on the stability of the power grid,and has certain engineering application value.关键词
高渗透率新能源/静态电压稳定性/新能源不确定性/分布式静止同步串联补偿器/概率评估Key words
high penetration new energy sources/static voltage stability/uncertainty of new energy sources/distributed static series compensator/probability assessment分类
信息技术与安全科学引用本文复制引用
赵玉林,李若瑾,尹杰,杨丽,李刚,梁文腾,周霞,刘东林..考虑新能源不确定性的含DSSC电网静态电压稳定分析[J].南方电网技术,2024,18(7):95-107,13.基金项目
国家自然基金重点项目资助(61933005).Supported by the Key Program of National Natural Science Foundation of China(61933005). （61933005）
