多群模式Taylor级数法暂态稳定计算  

Transient Stability Calculation by Multi-machine Equivalent Taylor Series Method

作　　者：夏世威[1] 白雪峰[1] 陈士麟[2] 郭志忠[1] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江省哈尔滨市150001 [2]台湾清华大学电机系,台湾省新竹市30013

出　　处：《电力系统自动化》2010年第10期24-28,共5页Automation of Electric Power Systems

摘　　要：Taylor级数法自引入到电力系统暂态稳定分析领域以来,因其高效的计算效率而倍受青睐,但其求解的是不等值N机系统的微分方程,因此计算效率未发挥到极致。文中从减少微分方程个数角度,借助于同调分群技术得出多群模式等值参数,并推导了多群模式下发电机的电磁功率、功角新的Taylor级数表达式,该方法保留了Taylor级数简洁、循环递推的特点,具有更高的计算效率。新英格兰10机系统算例分析表明:采用等值参数的多群模式Taylor级数法,在保持准确性的同时,减少了模拟的微分方程个数,极大提高了暂态稳定分析效率。Since Taylor series method introduced for power system transient stability analysis,it always has a good reputation of high calculating efficiency. But its computational efficiency is not maximized because it simulates the non-equivalent N-machine system with a large number of differential equations. To reduce the number of differential equations,this paper derivates a multi-group mode Taylor series method for transient stability analysis and gives a novel Taylor series expression of electromagnetic power,power angle based on equivalent parameters. This succinct and recursive expression has a better computational efficiency. Finally,the standard New England 10-generator power system is used to test the effectiveness of the proposed multi-group mode Taylor series method. The results show that the multi-group mode Taylor series method of equivalent parameters not only maintains the analysis accuracy,but also greatly improves the computational efficiency of the transient stability analysis because of the reduced number of differential equations used.

关 键 词：暂态稳定 TAYLOR级数法 多群模式 电力系统 

分 类 号：TM712[电气工程—电力系统及自动化]