Automatic Generation Control of TCPS Based Hydrothermal System under Open Market Scenario: A Fuzzy Logic Approach

  C. Srinivasa Rao¹, S. Siva Nagaraju², P. Sangameswara Raju³

¹ EEE Department, G. Pulla Reddy Engineering College, Kurnool, Andhra Pradesh, India

² EEE Department, J.N.T.U College of Engg., Kakinada, Andhra Pradesh , India.

³ EEE Department, S.V.University, Tirupati, Andhra Pradesh, India

Abstract:

This paper presents the analysis of Automatic generation control (AGC) of a two-area interconnected thyristor controlled phase shifter (TCPS) based hydrothermal system in the continuous mode using fuzzy logic controller (FLC) under open market scenario. The effects of nonlinearities like deadband and generation rate constraint on the system have also been investigated. The traditional AGC two-area system is modified to take into account the effect of bilateral contracts on the dynamics. It is possible to stabilize the system frequency and tie-power oscillations by controlling the phase angle of TCPS which is expected to provide a new ancillary service for the future power systems. A control strategy using TCPS is proposed to provide active control of system frequency. Simulation results show that the limitations of integral controller can be overcome by including Fuzzy concept and thereby the response of frequency and tie line power can be improved substantially following a load change in any area. Further dynamic responses for small perturbation have been observed, considering FLC and integral controller and the results of both have been compared.

Keywords: AGC, Area control error (ACE),deregulated system, FLC, hydrothermal system, open market system, TCPS

(Full Paper, 461 KB)

Biographies:

	C.Srinivasa Rao graduated from J.N.T University in 2002, Masters in 2004 from Birla Institute of Technology, Mesra and currently pursuing his Ph.D from J.N.T.University. Working as Assistant Professor in the Department of Electrical Engineering, G.Pulla Reddy Engineering college (Autonomous), Kurnool, Andhra Pradesh since June 2004.  His areas of interest are in Genetic Algorithm applications, power system operation and control and Deregulated market
	S.Sivanagaraju, graduated in 1998, Masters in 2000 from IIT, Kharagpur and did his Ph.D from J.N.T.University in 2004. Presently he is working as Associate Professor in the Department of Electrical Engineering, J.N.T.U College of Engg. (Autonomous), Kakinada. He is Referee for IEE Proceedings- Generation Transmission and Distribution and International Journal of Emerging Electric Power System. He has about 40 publications in National and International Journals and Conferences to his credit.  His areas of interest are in Distribution Automation, Genetic Algorithm applications to distribution systems and power system.
	P.Sangameswararaju did his Ph.D from S.V.University.  Presently he is working as Associate Professor in the Department of Electrical Engineering, S.V.University. Tirupathi, Andhra Pradesh. He has about 20 publications in National and International Journals and Conferences to his credit. His areas of interest are in Distribution systems and power systems.

BibTex:

@ARTICLE{P1120729001,

AUTHOR = {C. Srinivasa Rao and S. Siva Nagaraju and P. Sangameswara Raju},

TITLE = {AUTOMATIC GENERATION CONTROL OF TCPS BASED HYDROTHERMAL SYSTEM UNDER OPEN MARKET SCENARIO: A FUZZY LOGIC APPROACH},

JOURNAL =  {ICGST  International Journal on Artificial Intelligence and Machine Learning, AIML},

YEAR = {2007},

VOLUME = {7},

ISSUE ={1},

PAGES={47--54}

}

(Full Paper, 461 KB)