摘要
风电大规模接入电网引发了多起次/超同步振荡事件。为了分析风电并网系统在不同工况下的振荡稳定性以及安全裕度,亟需建立风电次/超同步振荡安全域。为此,该文首先基于阻抗网络模型,在功率注入空间给出风电次/超同步振荡安全域的定义;然后,提出基于聚合阻抗频率特性的次/超同步振荡模式获取方法,并通过预测-校正技术高效搜索安全域边界;最后,根据所提方法,构建了某实际风电并网系统的次/超同步振荡安全域,并通过时域仿真验证所提方法的有效性。
The large-scale integration of wind power into power grid has caused a large number of sub/super-synchronous oscillation(SSO)issues.To analyze the oscillatory stability and safety margin of wind power systems under different operating conditions,it is of great significance to construct the security region(SR)for SSO.To address this issue,this paper first proposed the definition of SR in the power injection space based on the impedance network model.Then,it used the frequency characteristics of aggregated impedance to obtain the SSO mode,and built the SR boundary efficiently via predictor-corrector technique.Finally,the proposed method was conducted on a practical wind power system that experienced actual SSOs,of which the SR was constructed.The effectiveness of the proposed method was validated by EMT simulations.
作者
占颖
谢小荣
柴炜
汪林光
姜齐荣
ZHAN Ying;XIE Xiaorong;CHAI Wei;WANG Linguang;JIANG Qirong(State Key lab of Control and Simulation of Power Systems and Generation Equipment(Department of Electrical Engineering,Tsinghua University),Haidian District,Beijing 100084,China;Shanghai Electric Power Research Institute of Shanghai Municipal Electric Power Company,Hongkou District,Shanghai 200437,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2022年第23期8446-8453,共8页
Proceedings of the CSEE
基金
国家电网有限公司科技项目(5100-202099499A-0-0-00):“双高”电力系统新型稳定性的量化分析方法研究。
关键词
次/超同步振荡
风电并网系统
安全域
预测-校正技术
sub/super-synchronous oscillation
wind power integrated system
security region
predictor-corrector technique
