电网技术2018，Vol.42Issue(1)：276-284,9.DOI:10.13335/j.1000-3673.pst.2017.1398
大电网静态稳定主导模式在线判别方法研究
Research on Online Identification Method of Dominant Steady State Stability Mode of Large Power Systems
贠志皓 1孙毓婕 1丰颖 2刘道伟3
作者信息
- 1. 电网智能化调度与控制教育部重点实验室(山东大学),山东省济南市250061
- 2. 国网扬州供电公司,江苏省扬州市225009
- 3. 中国电力科学研究院有限公司,北京市海淀区100192
- 折叠
摘要
Abstract
With large-scale integration of renewable energy,source side randomness of power grids may cause steady-state angle instability or voltage instability on load side.On-line identification of dominant static instability mode of power grids has important guiding significance for security control.For this reason,firstly,active power limits of source side and load side are deduced based on the two-node system,so as to establish angle and voltage stability margin indexes with uniform dimension on source side and load side.Secondly,based on Thevenin equivalence of load nodes,a method of Thevenin equivalent parameter identification for source node is proposed,providing a new idea for quantitative analysis of angle and voltage factors in static stability.Finally,change trend of the two margin indexes during system operation variation is compared,and the dominant stability mode is determined.Validity of the proposed method is verified by simulation results.关键词
功角稳定/电压稳定/主导模式/戴维南等值Key words
angle stability/voltage stability/dominant mode/Thevenin equivalence分类
信息技术与安全科学引用本文复制引用
贠志皓,孙毓婕,丰颖,刘道伟..大电网静态稳定主导模式在线判别方法研究[J].电网技术,2018,42(1):276-284,9.
