Overview of Existing Methodologies for Load Model Development

Load characteristics can have significant influence on dynamic performance of power systems. Accordingly, correct analysis of power systems require accurate load models, together with appropriate representations of generation, transmission and distribution parts of the system. However, load modeling is not a simple task, as there are a significant number of factors that should be taken into account such as diversity in types and characteristics of loads, lack of accurate and continuous information about the changes in load structure, and difficulties during the assessment and validation of load model accuracy. In order to overcome those difficulties, load modelling approaches have been developed This paper provides a critical overview of currently used two existing methodologies for load modeling, i.e., component-based and measurement-based load modelling approaches, with a detailed discussion of component-based and measurement-based approaches, clearly identifying their advantages and disadvantages. As a promizing new approach, the combination of the two approaches is also briefly discussed in this paper.

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