Power Research

P. Dinakara Prasad Reddy ¹, B. Chandra Sekhar ²

Affiliations
1 Department of EEE, Sri Venkateswara University, Tirupati-517502, Andhra Pradesh, IN
2 Senior Research Fellow, Energy Efficiency and Renewable Energy Division,CPRI, Bangalore - 560080, IN

Abstract

This paper presents a two stage approach that determines the optimal location and size of capacitors on radial distribution systems to improve voltage profile and to reduce the active power loss. In first stage, the capacitor locations can be found by using loss sensitivity method. Firefly algorithm is used for finding the optimal capacitor sizes in radial distribution systems. The sizes of the capacitors corresponding to maximum annual savings are determined by considering the cost of the capacitors. The proposed method is tested on 15-bus and 34-bus test systems and the results are presented.

Keywords

Capacitor placement, loss sensitivity method, firefly algorithm, radial distribution system

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P. Dinakara Prasad Reddy ¹, V. C. Veera Reddy ², T. Gowri Manohar ³, B. Chandra Sekhar ⁴

Affiliations
1 Research Scholar(JNTUK), Department of EEE, S V University College of Engineering, S V University, Tirupati-517502, IN
2 Professor, EEE Department, AITS, Tirupati-517502, IN
3 Professor, S V University College of Engineering, S V University, Tirupati-517502, IN
4 Senior Research Fellow, Energy Efficiency & Renewable Engineering Division, Central Power Research Institute, Bangalore-560080, IN

Abstract

Distributed Generator (DG) resources are small electric generating plants that can provide power to homes, businesses or industrial facilities in distribution feeders. By optimal placement of DG we can reduce power loss and improve the voltage profile. However, the values of DGs are largely dependent on their types, sizes and locations as they were installed in distribution feeders. The main contribution of the paper is to find the optimal locations of DG units and sizes. Index vector method is used for optimal DG locations. In this paper new optimization algorithm i.e. Grey wolf optimization algorithm is proposed to determine the optimal DG size. This paper uses three different types of DG units for compensation. The proposed methods have been tested on 15-bus, 34-bus, and 69-bus radial distribution systems. MATLAB^TM, Version 8.3 software is used for simulation.

Keywords

Grey Wolf Optimization Algorithm, Index Vector Method, Distributed Generation Placement, Radial Distribution System

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