【摘要】 实测负荷建模法因其自身的优点而被广泛应用,但是实测数据的来源成为了制约实测建模研究的主要因素,RTDS的出现一定程度上弥补了这个缺点,以四川攀枝花电网的RTDS数据为依托,对实测负荷建模中TVA模型的有效性、泛化能力以及负荷的时变性进行了研究,结果表明TVA负荷模型不但能够在较大范围内很好拟合各种扰动强度的数据,而且具有较强的泛化能力。在解决负荷时变性的过程中应用了聚类分析的方法对数据进行分类,最后在总结分类结果的基础上提出了一种简单的分类方法,为消除负荷时变性对建模的影响提供了借鉴。更多还原

【Abstract】 Because of its advantages on load modeling,measurement based method is widely used.But the lack of the field measurement data has been a limiting factor on its study.The appearance of RTDS gets rid of that limiting factor to some extent.Based on the RTDS data of Pan zhihua grid of Sichuan province,the validation and the generalization capability of the TVA load model structure are studied.A fter that,t he time-variant characteristics of the load are also analyzed.The result indicates that the TVA load model structure can not only simulate the load data with various disturbances but also has strong generalization capability.In time-variant characteristic study,cluster analysis is used to classify the load data.Finally,a simple method is proposed after the analysis of the load classification result,which provides the guidance for eliminating the effect of time-variant characteristics on load modeling.更多还原