Measurement-based Static Load Modelling: Case Study for a Medium Voltage Distribution Feeder

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Karimi Shahram; Abdi Hamdi; Moradi Mansour

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Journal Paper

Paper Information

Journal: INTERNATIONAL JOURNAL OF RESEARCH AND TECHNOLOGY IN ELECTRICAL INDUSTRY Year:2024 | Volume:3 | Issue:1 Page(s): 275-280

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Information Journal Paper

Title

Measurement-based Static Load Modelling: Case Study for a Medium Voltage Distribution Feeder

Author(s)

Karimi Shahram | Abdi Hamdi | Moradi Mansour | Issue Writer Certificate

Keywords

PV curve

QV curve

ZIP load model

Curve fitting

Distribution feeder

Abstract

The precise electrical load model under various operating conditions plays a critical role for power system analysis. A suitable load model can reflect the real condition of power system operation. This paper investigates the measurement-based static load modelling for power system analysis. For this purpose, practical measurement data, including voltage active and reactive power consumption, are used to obtain an accurate static model that represents the behaviour of electrical loads. In this paper, a method based on curve fitting and practical measurement data is proposed to select the appropriate time interval for accurate determination of load model coefficients. The study shows that a medium voltage distribution feeder can be modelled as a static load by a ZIP model whose coefficients are determined during the transformer tap changing operation. The obtained results show that the proposed method can accurately model the feeder load with the normalized root mean square error (NRMSE) during tap changes of about 0.22%, and 0.34% for active and reactive power, respectively.

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