International Journal of Research and Scientific Innovation (IJRSI) | Volume VI, Issue V, May 2019 | ISSN 2321–2705

Power Flow Analysis of IEEE 30 Bus System

Sanjib Hazarika

Assistant Professor, EE Department, GIMT, Azara, India

Abstract: – India is a large populated country and the electricity supply need of this population creates requirement of large transmission and distribution system. Transmission line is an integrated system consisting of conductor subsystem, ground wire subsystem and one subsystem for each category of support structure. The improvement in power scenario will affect the economic development of a country. So it is necessary to give prior importance in power improvement. Line losses play an important role in its efficiency. Reduction in its losses will improve the power scenario in India. With this view, this paper describes the variations of active and reactive power losses at different buses.

I. INTRODUCTION

Line flow analysis (LFA) is used to make sure that electrical power transfer from generator stations to consumers end through the grid system in reliable and economical form. Conventional techniques for line flow analysis problem are iterative mathematical method like the Newton-Raphson (NR) or the Gauss-Seidel (GS) methods. An engineer is always concerned about economical condition of the system operation. For the mighty interconnected grid system, the power shortage results continuous hike in prices. Thus, it is the priority of engineer to control this continuous hike. Another major problem is economic load dispatch in an optimized manner as it is directly related with load demands. For economically optimized operation of interconnected grid system modern system theory and optimization techniques are being applied with the optimized generation cost function. Through the line flow study, the voltage magnitude and angle at each bus under the steady state can be obtained.

Line flow analysis (LFA) is very important tool for analysis of power systems which is used at operational as well as planning stages of the system, like adding and installation of new generation station, load balancing in dynamic running condition and transmission lines site selection. The LFA gives the voltage and phase angle at each bus which is further used to determine the power injection at all the busses along with power flow through interconnected nodes. All these system parameter obtained values are needed for determining the optimal location as well as optimal capacity of proposed generation station, substation and new lines. In order to avoid the system unbalance condition, the voltage should be maintained within its tolerance limit with minimized line transmission losses.