CAJ | 학술논문

针对传统静态安全分析基于单一时间断面、无法细致反映系统状态变化的不足,本文提出了一种面向时间过程的静态安全分析方法.首先介绍了面向过程方法的基本概念.充分利用丰富的电力系统测量和负荷预测数据信息,提取了描述每个时间断面的特征向量;结合电力系统负荷连续变化的特点,通过改进的K-means聚类分析技术,对负荷曲线进行了时间过程的划分.定义了提取时间子过程最大特征断面和最小特征断面的指标,并对特征断面的显著代表性进行了研究.在保证电网安全稳定的前提下,本文方法可一定程度上提高传输线路的利用率.最后,IEEE30节点算例表明面向时间过程静态安全分析方法的合理性和有效性.
침대전통정태안전분석기우단일시간단면、무법세치반영계통상태변화적불족,본문제출료일충면향시간과정적정태안전분석방법.수선개소료면향과정방법적기본개념.충분이용봉부적전력계통측량화부하예측수거신식,제취료묘술매개시간단면적특정향량;결합전력계통부하련속변화적특점,통과개진적K-means취류분석기술,대부하곡선진행료시간과정적화분.정의료제취시간자과정최대특정단면화최소특정단면적지표,병대특정단면적현저대표성진행료연구.재보증전망안전은정적전제하,본문방법가일정정도상제고전수선로적이용솔.최후,IEEE30절점산례표명면향시간과정정태안전분석방법적합이성화유효성.
The traditional static security analysis based on the data of one time section can not adapt to the continuous state changing of power system appropriately.To improve the deficiency,a time process-oriented static security analysis method is presented in the paper.Firstly,the basic idea of time process-oriented method is explained.Secondly,with the abundant measurements and load forecasting information,the characteristic vector of each time section is extracted.Then the load curve is partitioned into several time sub-processes by the improved K-means clustering algorithm considering the successive time series of power load.Thirdly,the indices extracting the maximum and minimum characteristic sections of every time sub-process are defined.Then the representativeness of the characteristic sections is verified.While ensuring the static security,the time process-oriented method can improve the utilization rate of transmission lines to some extent.Finally,the calculation and analysis of IEEE 30-bus system shows the effectiveness of the method proposed in the paper.