Electrical Department

This paper presents a new approach to solve the transient stability problem. The conventional PI based SVC controller has simple functioning and is economical in operation but has sluggish performance with non-linear characteristics. so, in order to circumvent this problem, fuzzy based T-I-D controller has been designed to improve the transient stability of 2 machine 3 bus power system using MATLAB/SIMULINK software.

The main objective of power system operation and control is to maintain the continuity of supply with an acceptable quality and reliability. The system will be in balanced condition, when there is a balance between the power demand and the power generated. In this paper, Load Frequency Control (LFC) of single area and two-area inter-connected thermal reheat power system has been carried out by the integral controller. The system responses have been simulated in MATLAB environment. In this paper genetic algorithm is used to obtain the optimal gain of integral controller for better dynamic response of the system. In the power system, reheat and generation rate constraints (GRC) are considered. The response with GRC is compared with the analysis done without the Generation Rate Constraint. Keyword: Load Frequency Control (LFC), Automatic Generation Control (AGC),Two area power system, Genetic algorithm (GA),Generation Rate Constraint (GRC),Area control error(ACE) and Integral square er...

The interconnected systems is continually increasing in size and extending over whole geographical regions, it is becoming increasingly more difficult to maintain synchronism between various parts of the power system. This paper work presents an advanced adaptive Particle swarm optimization technique to optimize the SVC controller parameters for enhancement of the steady state stability & overcoming the premature convergence & stagnation problems as in basic PSO algorithm & Particle swarm optimization with shrinkage factor & inertia weight approach (PSO-SFIWA). In this paper SMIB system along with PID damped SVC controller is considered for study. The generator speed deviation is used as an auxiliary signal to SVC, to generate the desired damping. This controller improves the dynamic performance of power system by reducing the steady-state error. The controller parameters are optimized using basic PSO, PSO-SFIWA & Advanced Adaptive PSO. Computational results show that Advanced Adaptive based SVC controller is able to find better quality solution as compare to conventional PSO & PSO-SFIWA Techniques.

This paper presents a new approach to solve the transient stability problem. The conventional PI based SVC controller has simple functioning and is economical in operation but has sluggish performance with non-linear characteristics. so, in order to circumvent this problem, fuzzy based T-I-D controller has been designed to improve the transient stability of 2 machine 3 bus power system using MATLAB/SIMULINK software.

The solar power radiation never remains constant. It keeps on varying throughout the day. The need of the hour is to deliver a constant voltage to the grid irrespective of the variation in temperature and solar insolation. A PV solar system exhibits nonlinear V-I characteristics and it varies with solar insolation and temperature. Also maximum power output varies with the change in temperature and solar insolation conditions. A DC-DC boost converter efficiently converts DC voltage to higher voltage, and is also used for PV maximum power tracking purpose to obtain maximum power possible from PV system. This paper evaluates the most commonly used MPPT techniques and finds out which MPPT technique is most efficient and suitable for grid connected systems. This paper presents the modeling of a PV cell, DC-DC converter, and simulation study of a grid connected PV System. In this paper a new discrete time integral incremental conductance algorithm is proposed. Using mat lab/Simulink platf...

The proposed paper deals with a new type of controller credited with a name of “Novel PRESH” helpful in mitigating the harmonic of Grid Tied TPSPPS (Grid-Tied Three Phase Solar Photovoltaic Power System) even during abnormal grid condition. Novel PRESH controller is formed by combining the characteristic of PRES and RESH Controller and its harmonic mitigation analysis is done with the help of both Bode-Plot and MATLAB Simulink. Presently, for eliminating the harmonic from Grid -Tied TPSPPS, various filters and controllers have already been proposed but it either resulted in increase of computational load or make the system bulky. Earlier technique develops in eliminating the harmonic face difficulty in eliminating the harmonic when the reference waveform get distorted from its original position. The proposed “Novel PRESH” controller can also be incorporated when grid suffers from any abnormal condition. The presented paper will also discuss the performance analysis of controller alo...