摘要
随着柔性交流输电系统(flexible AC transmission system,FACTS)的广泛发展,研究其装置容量限制对电压稳定的影响具有重要意义。分析无功补偿设备输出达到容量极限时,可能出现引起电压失稳的极限诱导分岔;提出容量达到极限时判定发生极限诱导分岔的新判据,该判据只需估算矩阵谱半径的上下界,避免矩阵求逆和特征值等运算,在原理和技巧上有别于传统方法,具有原理清晰、计算量小的特点。基于上述判据探讨识别极限诱导分岔和鞍结分岔的综合方法,最后给出提高电压稳定裕度新的控制策略。该文以静止同步补偿器(static synchronous compensator,STATCOM)为例,在IEEE-30节点算例中验证所提方法的正确性和有效性。
With the development of flexible AC transmission system （FACTS）, the voltage stability analysis is important due to FACTS devices capacity limit. Limit induced bifurcation （LIB） may appear when reactive compensation device reach its limit output, which is studied in this paper. When variables limit is reached, the new criterion is formulated for LIB. The criterion uses estimates of bounds of the spectral radius of matrix and avoids solving inverse matrix and eigenvalues, which has distinctive theory and require less computation work. The method is different from the traditional method in principle. The comprehensive method is given to identify LIB and saddle node bifurcation based on criterion. The control method is also given to improve voltage stable margin. The static synchronous compensator （STATCOM） is taken as an example to study, and calculation and simulation results of 30-bus test system verify the correctness and efficiency of the analysis method.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2013年第28期88-93,14,共6页
Proceedings of the CSEE
基金
"十二五"国家科技支撑计划重大项目(2011BAA01B02)~~
关键词
电力系统
电压稳定
分岔理论
静止同步补偿器
柔性交流输电系统
power system
voltage stability
bifurcation theory
static synchronous compensator （STATCOM）
flexible AC transmission system （FACTS）
