Informatics Publishing Limited

S. Rajasomashekar ¹, A. Ananthi Christy ¹, P. U. Poornima ², R. Brindha ², C. Sujitha ², H. Bharath Varma ², Arul Mecloy Lobo ³

Affiliations
1 Annamalai University, Annamalai Nagar, Chidambaram - 608002, Tamil Nadu, IN
2 Department of EEE, SRM University, Kattankulathur, Chennai - 603203, Tamil Nadu, IN
3 Bin Salim Enterprises, Sultanate of Oman, OM

Abstract

Background / Objectives: This paper narrates a novel strategy employing fuzzy logic for voltage profile enhancement and loss minimization in power systems. Linearized model is utilized and limit violations of control variables translated into fuzzy set notation. Methods/Statistical Analysis: The method adopted here for the voltage profile enhancement consists of certain number of load buses with definite VAR compensation schemes. In this work, it is mainly aimed to enhance the system voltage profile and thereby reducing power losses in it. Here, the linearization of objective functions and constraints is done about the current operating point. Findings: The equality and inequality constraints include dependent and independent variables. Later, power flow studies are used to calculate the limit violations of bus voltage magnitude and thereby a viable solution set that aims for voltage profile improvement as well as power loss reduction is finally obtained using appropriate operations of the fuzzy sets. In order to demonstrate the efficacy of this approach, IEEE 14 –bus test system is implemented. Application/Improvement: Due to the application of fuzzy logic, the control of variables in the problem is global and it involves less computational time and the results can have more accuracy.

Keywords

Fuzzy-based Strategy, Fuzzification and Membership Functions, Linearized Model, Reactive Power Scheduling, Voltage Profile Enhancement.

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A. Ananthi Christy ¹, K. Balamurugan ², P. Ajay D. Vimal Raj ³, S. Rajasomashekar ⁴, Kolla Srikanth ¹, Arul Mecloy Lobo ⁵

Affiliations
1 Department of EEE, SRM University, Kattankulathur, Chennai - 603203, Tamil Nadu, IN
2 School of EEE, SASTRA University, Thanjavur - 613401, Tamil Nadu, IN
3 Department of EEE, Pondicherry Engineering College, Puducherry - 605014, Tamil Nadu, IN
4 Department of Electrical Engineering, Annamalai university, Annamalai Nagar, Chidambaram – 608002, Tamil Nadu, IN
5 Bin Salim Enterprises, Sultanate of Oman, IN

Abstract

Background/Objective: In power systems, the dispatch of real power plays a pivotal role in mitigating the transmission congestion, yet at a very low and affordable cost. Thus, in this paper, the rescheduling of real power generation has been dealt with a view to manage the congestion in transmission. Methods/Statistical Analysis: In this paper, the congestion management in a deregulated electricity market has been endeavored for the problems of Combined Economic and Emission Dispatch (CEED) by employing a novel technique of optimization through Artificial Bee Colony (ABC) algorithm. In a real time transmission system, the congestion is an inevitable condition that occurs when the power flow in the line exceeds than that of its limit. In this work, the optimized solution for CEED problem has been obtained via ABC algorithm. An encoding scheme based on generating unit is used. Findings: By employing a robust and efficient methodology using ABC algorithm, an optimal technique on congestion management has been proposed, which takes into account of corrective re-dispatch of real power through the transmission system, under the CEED – environment on a restructured power system. The proposed method has been tested on an IEEE 30-bus system and their results have also been validated to show the efficacy of the proposed methodology, which throw light upon the fact that it has emerged out as an effective tool in handling the transmission congestion in a deregulated environment that results in the minimization of cost of re-dispatch on one hand and in a secured operating condition on the other. Application/Improvements: This work can be extended in the future by including reactive power support, which can further minimize the total operating cost of the system.

Keywords

Artificial Bee Colony, Combined Economic Emission Dispatch, Congestion Management, Deregulated Electricity Market, Transmission Congestion.

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