文章摘要
周靖皓,石鹏,甘德强,等.值集法在大电网鲁棒稳定分析中的实现及与μ方法比较[J].电力系统自动化,2018,42(1):98-104. DOI: 10.7500/AEPS20170424007.
ZHOU Jinghao,SHI Peng,GAN Deqiang, et al.Implementation of Value Set Approach in Robust Stability Analysis of Large Power Systems and Its Comparison with μ-based Approach[J].Automation of Electric Power Systems,2018,42(1):98-104. DOI: 10.7500/AEPS20170424007.
值集法在大电网鲁棒稳定分析中的实现及与μ方法比较
Implementation of Value Set Approach in Robust Stability Analysis of Large Power Systems and Its Comparison with μ-based Approach
DOI:10.7500/AEPS20170424007
关键词: 不确定性  结构奇异值  鲁棒稳定性  值集法
KeyWords: uncertainty  structured singular value  robustness stability  value set approach
上网日期:2017-11-21
基金项目:国家重点研发计划智能电网技术与装备重点专项资助项目(2016YFB0900605)
作者单位E-mail
周靖皓 浙江大学电气工程学院, 浙江省杭州市 310027  
石鹏 浙江大学电气工程学院, 浙江省杭州市 310027  
甘德强 浙江大学电气工程学院, 浙江省杭州市 310027 deqiang.gan@ieee.org 
高洵 国家电网公司华北分部, 北京市 100053  
贾琳 国家电网公司华北分部, 北京市 100053  
徐英 国家电网公司华北分部, 北京市 100053  
摘要:
      值集法是基于特征多项式的图形化分析方法,能够分析不确定参数对系统稳定性的影响。文中介绍了值集法在大规模电力系统中的实现方法,包括大数处理、内存优化、降阶效果的评估与调整以及鲁棒D稳定性的应用等,这些对于值集法的实际使用至关重要。此外,还从鲁棒稳定性判断、稳定裕度计算、参数作用分析、保守程度、计算速度等方面对值集法和电力系统常用的结构奇异值(μ)方法进行了比较。最后,以华北电网方式数据为例介绍了值集法在大规模系统中的实现方法,并将值集法与μ方法的结果进行了比较,体现了两种方法的特点。
Abstract:
      The value set approach is a graphics-oriented method based on the characteristic polynomial of the system. It can be used to analyze the impacts of uncertain parameters on the system stability. This paper describes the implementation of the value set approach in the robust stability analysis of the large power system, including the treatment of large numbers, memory optimization, assessment and adjustment of system reduction, and application to Gamma-stability criterion. These techniques are vital for the actual application of the value set approach. Also the value set approach is compared with the widely used μ-based approach in terms of their robustness stability analysis, stability margin calculation, parameter impact analysis, conservativeness, and computation speed. Finally, the North China system is used to illustrate the implementation of the value set approach and test the two approaches, which reflects characteristics of the two approaches.
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