Practical Transient State Assessment for Induction Motors Starting in Medium Voltage Networks.

Document Type : Research Studies

Authors

1 Author graduated from faculty of engineering, Kafr El-Sheikh University. He is doing a Master degree at faculty of engineering, Mansoura University, Mansoura, Egypt.

2 Electrical Engineering Department, Mansoura University, Faculty of Engineering, Mansoura, P.O. Box 35516, Egypt

3 Electrical Engineering Department, Mansoura University, Mansoura, Egypt

4 Electrical Engineering Department, Mansoura University, El-Mansoura, 36615, Egypt

Abstract

This paper presents a modelling and experimental verification system for a group of induction motors during starting in medium voltage networks including its effects on other nearby running units in different operating conditions. The simulation model is based on a real-life case study which is an agricultural drain pump station. The dynamic model was built with MATLAB®/SIMULINK® where a thorough performance analysis can be achieved. For system verification, the simulation curve results were compared with real-life data curves which were recorded by a suitable device located on worksite. The verified model was used to perform six practical scenarios based on the real station’s operating instructions. For each studied scenario, a group of parameters such as voltage dip, its duration and voltage regulation are discussed in detail and compared in a tabular form considering the recommended adjustments for the protection relay settings

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