CAJ | 학술논문

为对风电场接入电力系统进行暂态稳定分析，提出了一种基于数字网系方法的电力系统暂态稳定性分析方法。该方法的采样值具有等分布性，可以改善输入随机变量分布空间覆盖程度，只需要较少的仿真次数即可快速估计输出随机变量的概率分布。选用IEEE39节点系统为例，建立风电场出力模型，并进行时域仿真。将本文方法分析结果与基于蒙特卡洛法的精确解进行了对比，对本文所提方法的准确性与快速性进行了验证，结果表明：数字网系方法解决了传统随机性分析方法计算次数多、仿真时间长、占用内存大的问题，它可以较好的估计输出随机变量的概率分布，能有效地处理系统运行中的不确定性问题。
위대풍전장접입전력계통진행잠태은정분석，제출료일충기우수자망계방법적전력계통잠태은정성분석방법。해방법적채양치구유등분포성，가이개선수입수궤변량분포공간복개정도，지수요교소적방진차수즉가쾌속고계수출수궤변량적개솔분포。선용IEEE39절점계통위례，건립풍전장출력모형，병진행시역방진。장본문방법분석결과여기우몽특잡락법적정학해진행료대비，대본문소제방법적준학성여쾌속성진행료험증，결과표명：수자망계방법해결료전통수궤성분석방법계산차수다、방진시간장、점용내존대적문제，타가이교호적고계수출수궤변량적개솔분포，능유효지처리계통운행중적불학정성문제。
To analyze the transient stability of power system integrated with wind farm groups, this paper applied Digital Nets meth￣od to compute system’ s transient stability. Digital Nets method which has equidistributed sample values is applied to improve the sample values coverage of random variables input spaces. The accuracy and validity of proposed method are tested on IEEE 39 bus system which the wind farm power modeling on the platform and the simulation results show that Digital Nets method can rapidly esti￣mate the probability distribution of the output random variables compared with the traditional approaches which need more number of calculation times, long simulation time and need of memory space.