Voltage Stability Index of Radial Distribution Networks by Considering Distributed Generator for Different Types of Loads

Tapan Kumar Chattopadhyay, Sumit Banerjee and Chandan Kumar Chanda
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Tapan Kumar Chattopadhyay: Electrical Engineering Department, Dr. BC Roy Engineering College, Durgapur, India
Sumit Banerjee: Electrical Engineering Department, Dr. BC Roy Engineering College, Durgapur, India
Chandan Kumar Chanda: Electrical Engineering Department, Indian Institute of Engineering Science and Technology, Howrah, India

International Journal of Energy Optimization and Engineering (IJEOE), 2016, vol. 5, issue 1, 1-22

Abstract: The paper presents an approach on voltage stability analysis of distribution networks for loads of different types. A voltage stability index is proposed for identifying the node, which is most sensitive to voltage collapse. It is shown that the node, at which the value of voltage stability index is maximum, is more sensitive to voltage collapse. For the purpose of voltage stability analysis, constant power, constant current, constant impedance and composite load modeling are considered. Distributed generation can be integrated into distribution systems to meet the increasing load demand. It is seen that with the insertion of distributed generator (DG), load capability limit of the feeder has increased for all types of loads. By using this voltage stability index, one can measure the level of voltage stability of radial distribution systems and thereby appropriate action may be taken if the index indicates a poor level of stability. The effectiveness of the proposed method is demonstrated through two examples.

Date: 2016
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