基于面向时间过程的静态安全分析(英文)  

Power System Static Security Analysis With Time Process-Oriented Method

作　　者：余加喜[1] 郭志忠[2] 白雪峰[2] 刘瑞叶[2] 

机构地区：[1]海南电网公司调度通信中心,海口570203 [2]哈尔滨工业大学电气与自动化工程学院,哈尔滨150001

出　　处：《电工技术学报》2010年第10期142-149,共8页Transactions of China Electrotechnical Society

基　　金：supported by research fund for the doctoral program of higher education(RFDP)(20060213042)

摘　　要：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。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.

关 键 词：特征断面 潮流 静态安全分析 面向时间过程 

分 类 号：TM711[电气工程—电力系统及自动化]