| 引用本文: | 和萍,王新金,王克文,魏云冰.基于概率条件的特定模式降阶研究[J].电力自动化设备,2009,(6): |
| .Special mode order reduction based on probabilistic condition[J].Electric Power Automation Equipment,2009,(6): |
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| 摘要: |
| 为了进一步提高多运行方式下大系统稳定计算的效率.在概率条件下对大系统特定模式进行降阶计算,并对降阶后模型进行了应用研究.在单方式大系统特定模式降阶计算工作的基础上,将概率方法引入到特定模式降阶研究中,依据特征值灵敏度对系统状态矩阵进行重新排序,仅保留与特定模式强相关的发电机组,使状态矩阵维数得以降低,得到降阶后模型.由于降阶后状态矩阵一般为复数形式,把矩阵虚部作为实部的修正量,以实部的特定特征值作为初值,采用改进Ravleigh商逆迭代法对降阶后矩阵进行迭代计算.在一16机系统上进行试算分析,结果显示概率情况下的降阶模型基本反映了多种运行方式下对应特征值的变化趋势,表明了该方法的可行性. |
| 关键词: 电力系统 降阶 概率条件 特征值灵敏度 机电模式 Ravleigh商逆迭代 |
| DOI： |
| 分类号:TM744 |
| 基金项目:河南省高等学校青年骨干教师资助计划，郑州轻工业学院科研基金? |
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| Special mode order reduction based on probabilistic condition |
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HE Ping1 WANG Xinjin1 WANG Kewen2 WEI Yunbing1
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| Abstract: |
| In order to improve the efficiency of power system stability calculation,the order reduction based on probabilistic condition is presented for the special modes of large power system and the application research of order - reduced model is carried out. Based on the order - reduction calculation for the special modes of large power system under single operating condition,the probabilistic method is introduced to order reduction research. The state matrix is rearranged by eigenvalue sensitivities and only the... |
| Key words: power system order reduction probabilistic condition eigenvalue sensitivity electromechanical mode Rayleigh quotient inverse iteration |
