I. Jacob Raglend

Noorul Islam University, Kumaralingam, Tamil Nādu, India

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Publications (35)8.8 Total impact

  • K.R. Suja, I. Jacob Raglend
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    ABSTRACT: Non-linear loads are normally affected by power quality (PQ) problems. Harmonic currents create system resonance, capacitor overloading, decrease in efficiency. Voltage sags are commonly occurring power quality problems in electrical systems. The unified power quality conditioner (UPQC) is one of the FACTS controllers used for mitigating the effect of voltage sags. The series compensator in the UPQC is for quadrature type of voltage injection. So that at steady state the series compensator never consumes active power. The proposed method introduces a low power rating series compensator that injects the voltage which perfectly compensate the power quality problem of the system. The addition of fuzzy logic controller with the conventional UPQC reduces the voltage sag levels in the output voltage and also improves the power factor. The control circuit is designed using fuzzy logic controller and simulated using MATLAB/SIMULINK.
    Circuits, Power and Computing Technologies (ICCPCT), 2013 International Conference on; 01/2013
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    ABSTRACT: In the deregulated electricity market, it has become very important to determine the complete information about the participants who are utilizing the transmission network. Transmission line usage computation requires information of generator to load contributions and the path used by various generators to meet loads and losses. In the present restructured electricity market, it is necessary to develop appropriate pricing techniques that can provide the useful economic information to market participants. In this paper, the three existing techniques namely Zbus method, Zbusavg method and Relative Electrical Distance (RED) method for the network cost allocation is compared. It has been successfully applied on an IEEE 24 bus-Reliability Test System (RTS) and the results obtained are compared. The results obtained are quite encouraging and useful for the deregulated electricity market related issues. The simulation is carried out using MATLAB 7.8.0 (R 2009a).
    Power, Energy and Control (ICPEC), 2013 International Conference on; 01/2013
  • L Babu Saraswathi Kavitha, I. Jacob Raglend
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    ABSTRACT: Phased arrays when mounted on aircraft and missiles will be capable of allowing only the desired signals to be received and simultaneously suppress all other unwanted ones incident from hostile sources. This in turn will make them invisible for the radars at the enemy base or on their aircraft. The paper discusses about the Phased array antenna, Mechanically Steered Planar Array, Passive Electronically Scanned Array, Active Electronically Scanned Array, Wide angle scanning phased array, Mutual coupling effects in phased array and MEMS Electronically steerable antennas. The main aim is analysis of antenna elements suitable for wide-angle scanning array antennas which are useful in airborne radar applications and considers problems related to the design and the analysis of wide-angle scanning phased arrays. The antenna aperture consists many radiating elements used for beam-forming and hence through the adjustment of elemental phases steer the beam efficiently. Moreover, they are capable of rejecting all the unwanted components of the received signals while maintaining at the same time sufficient pattern gain in the desired directions. These characteristics can be implemented for stealth applications.
    Circuits, Power and Computing Technologies (ICCPCT), 2013 International Conference on; 01/2013
  • J. Mary Anita, I. Jacob Raglend
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    ABSTRACT: Unit Commitment(UC) of thermal units is a complex constrained optimization problem. Introduction of environmental factors have made the UC problem more complex. In this paper the environmental constrained UC is solved using the evolutionary technique known as Shuffled Frog Leaping Algorithm (SFLA). This is based on the behavior of group of frogs searching for a location that has the maximum amount of available food. Possible solutions are grouped into memeplexes. The local search process is carried out to share ideas between the frogs within the memeplex. Shuffling process is carried out to share ideas between the memeplexes. Local search and shuffling process are repeated until a required convergence is reached. In this proposed method of SFLA for the UC problem, the scheduling variables are coded as integers, to handle minimum up/down time constraints at the coding stage itself. The proposed algorithm is tested on IEEE 30 bus system and the results are quiet encouraging.
    Circuits, Power and Computing Technologies (ICCPCT), 2013 International Conference on; 01/2013
  • P JenoPaul, T Ruban Deva Prakash, I Jacob Raglend
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    ABSTRACT: This paper proposes a unified power quality conditioner to minimize the power quality impact present in the matrix converter instead of a passive filter. A matrix converter produces significant harmonics and converts non-standard frequency components into load. The proposed approach eliminates the total harmonic distortions (THD) efficiently, and mitigates sag and swell present in the matrix converter′s load voltage. Because of the smaller THD, the harmonic pollution in the power system will be reduced and the power quality will be increased. The proposed approach has been tested and validated on the matrix converter using Matlab/Simulink software. The simulation results are shown to demonstrate the advantages of the proposed scheme.
    Transactions of the Institute of Measurement and Control 07/2012; 34(5):585-593. · 0.66 Impact Factor
  • P. Jeno Paul, I. Jacob Raglend, T. Ruban Deva Prakash
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    ABSTRACT: A wind power plant meets many power quality issues when it is connected with a microgrid, because the voltage and frequency are not stable in a microgrid. This article envisages a new power quality conditioner to regulate the supply frequency, control the power flow, minimize current harmonics, and regulate the voltage for a fixed-speed induction generator type wind generator. The proposed new power line conditioner is called a universal power line manager. The control circuit of the universal power line manager is a combination of the control system of a unified power quality conditioner, power flow control, and a frequency regulator. For these reasons, the proposed universal power line manager is very suitable for wind power generators. The universal power line manager's matrix converter controls the windmill power flow with respect to the microgrid frequency and voltage. Hence, the microgrid can maintain constant voltage and frequency. The complete system has been developed, analyzed, and validated by MATLAB/Simulink (The MathWorks, Natick, Massachusetts, USA). Simulation results are presented to confirm that the new approach has better performance for a wind turbine generator.
    Transactions of the Institute of Measurement and Control 04/2012; 40(12):1390-1404. · 0.66 Impact Factor
  • K. R. Suja, I. Jacob Raglend
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    ABSTRACT: The operating performance of wind electric generators has considerable stress on the quality of electric power and reliability in the performance power systems [1]. Power quality issues such as voltage dip, harmonic distortion and reliability problems are main considerations in this work. The voltage distortion & reactive power issues are also considered. The powerful MATLAB tool is used to analyse the power quality issues and other reliability problems in this paper and also the performance of induction generator connected with grid is also analyzed for power quality problems. The compensator is designed to inject reactive power to overcome power quality problems and also for better grid operation. There is a continuous variation in terminal voltage because of the varying wind speed. The addition of STATCOM into the system supports to maintain the active power, reactive power and terminal voltage as constant. The wind turbine generators have power electronic based converters can be effectively utilized for efficient control of power, but they generate harmonics. The modified STATCOM as shunt active filter which is used for reducing system harmonics and to improve the system performance [4]. The STATCOM model is implemented using PIC controller.
    01/2012;
  • J.M. Anita, I.J. Raglend
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    ABSTRACT: This paper presents a solution to Unit commitment (UC) of thermal units based on a new evolutionary algorithm known as Shuffled Frog Leaping Algorithm(SFLA). The integer coded algorithm is based on the behavior of group of frogs searching for a location that has the maximum amount of available food. This algorithm involves local search and shuffling process and these are repeated until a required convergence is reached. In this proposed method of SFLA for the UC problem, the scheduling variables are coded as integers, so that the minimum up/down time constraints can be handled directly. To verify the performance of the proposed algorithm it is applied to the 10 unit system for a one day scheduling period.
    Computing, Electronics and Electrical Technologies (ICCEET), 2012 International Conference on; 01/2012
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    ABSTRACT: To maximize the benefits on installation of distributed generation (DG) units, it is necessary to determine optimal number, rating and position in the power system. Improper sizing and location can cause harm to the stability of the power system. To solve these issues, numerous techniques have been presented by researchers over the years. In this paper, a complete survey has been made on various methodologies employed in obtaining the optimal location and sizing of DG units.
    01/2012;
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    ABSTRACT: In power system studies, congestion in transmission lines and utilization of Flexible Alternating Current Transmission System (FACTS) devices are closely associated and it is very important due to their role in power delivery system enhancement. It is to be noted that the generation companies can exercise their market power which depends on the line flows and the line constraints, generators' location and its share to the individual loads. This issue cannot be overlooked as it creates monopoliness which is a threat to the deregulated market policy. The objective of this paper is to show how the generation companies' market power gets enhanced due the FACTS devices. FACTS devices like Thyristor Controlled Switching Capacitor (TCSC) and Thyristor Controlled Phase Angle Regulator (TCPAR) are taken and used under steady state operation. The market power is determined using Nodal Must Run Share (NMRS) index for the standard IEEE 14bus system with and without the above FACTS devices and the results obtained are compared. All the above simulations are carried out in MATLAB 7.9R2009b environment.
    India Conference (INDICON), 2012 Annual IEEE; 01/2012
  • Source
    09/2011; , ISBN: 978-953-307-330-9
  • P.J. Paul, I.J. Raglend, T.R.D. Prakash
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    ABSTRACT: The aim of this paper is to maintain the constant frequency in the utility using constant frequency unified power quality conditioner. A constant frequency unified power quality conditioning system (CF-UPQC) consists of a unified power quality conditioner (UPQC) and a Matrix converter based frequency changer. UPQC is a combination of series active and shunt active filter. The series active filter and shunt active filters are used to compensate the voltage, current imbalance and harmonics. Frequency converter(Matrix converter) is used to regulate the supply frequency when it varies beyond the power quality limit. The performance of the CF-UPQC which is composed by UPQC and matrix converter has been verified based on the simulation results.
    Emerging Trends in Electrical and Computer Technology (ICETECT), 2011 International Conference on; 04/2011
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    ABSTRACT: This paper presents a novel control strategy for the case of 3-phase 3-wire Unified Power-Quality Conditioner (UPQC) based on the concepts of instantaneous active and reactive Power theory. The UPQCs is one of the major custom power solutions capable of mitigating the effect of supply voltage sags / swells, distortion, unbalance voltage at the point of common coupling (PCC) as well as load harmonics, unbalance load and reactive power requirement of load. Using this control strategy harmonic detection, reactive power compensation, voltage sag and swell have been simulated and the results are analyzed. The operation and capability of the proposed system was analyzed through simulations with MATLAB / SIMULINK.
    Power Electronics, Drives and Energy Systems (PEDES) & 2010 Power India, 2010 Joint International Conference on; 01/2011
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    ABSTRACT: The aim of our study is the optimization after restoring and reconfigure the faulted area in a distribution network after locating and isolating the faulted block. Restoration involves changing the switch status to maximize the supply to loads that are left unsupplied after fault removal. After system optimization using reconfiguration, Field Programmable Gate Array (FPGA) is used in order to control the switches by generating the pulses for the stable configuration. In the proposed system restoration and reconfiguration process is achieved in 16 bus system and simultaneously load flow analysis is performed before and after the fault and the same is verified in MATLAB. Optimization using Binary Particle Swarm Optimization (BPSO) is done in order to get the most stable configuration for restoration process by minimizing the LBI (load balancing index).
    01/2011;
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    ABSTRACT: Load flow or power flow is the solution for the normal balanced steady-state operating conditions of an electric power system. It became an essential prerequisite for power system studies as it is used to ensure that electrical power transfer from generators to consumers through the grid system is stable, reliable and economic. In this paper, the topology based load flow studies are made available in the MATLAB -Graphical User Interface (GUI) environment which will bring the load flow studies more user friendly. Using this tool, extensive graphical analysis has also been made. Standard IEEE test systems are taken as an input data and the results are plotted. This can also be extended for any analysis where load flow results are used as an input.
    Sustainable Energy and Intelligent Systems (SEISCON 2011), International Conference on; 01/2011
  • P. JenoPaul, I. Jacob Raglend, T. Ruban Deva Prakash
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    ABSTRACT: The paper proposes the application of constant frequency unified power quality conditioner to overcome the power quality issues in fixed speed wind mill connected with the micro grid. The power circuit of a constant frequency unified power quality conditioner (CF-UPQC) is based on a combination of UPQC, and frequency regulator (matrix converter). This equipment incorporates compensation functions like voltage sag, voltage swell, reactive power compensation, current harmonic rejection, and also provides frequency regulation. Integrated series and parallel active filter (UPQC) is a universal solution for the most power quality problems. The main drawback is that it cannot regulate the supply frequency variation. Here CF_UPQC the matrix converter is used for frequency regulation. This integration, the compensator compensates all the power quality issue for fixed speed induction wind generator. Simulation results are presented to confirm that this approach has better performance over the existing power quality conditioners for FSIWG connected with micro grid.
    01/2011;
  • P. Jeno Paul, I. Jacob Raglend, T. Ruban Deva Prakash
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    ABSTRACT: Wind power plant meets so many power quality issues when it is connected with strong grid. This paper proposes a new power quality conditioner to regulate the supply frequency, to control the power flow, to minimize the current harmonics, and to regulate the voltage for fixed speed induction generator type wind generator. The name of the proposed new power line conditioner is called as Universal Power Line Manager. The control circuit of a Universal Power Line Manager (UPLM) is the combination of the control system of UPQC, Power flow control and frequency regulator. For these reasons, the compensator proposed here is called as the Universal Power Line manager (UPLM). The complete system has been developed, analyzed and validated by matlab/simulink study. Simulation results are presented to confirm that the new approach has better performance for wind turbine generator.
    01/2011;
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    ABSTRACT: In micro grid many power quality issues like voltage sag, swell, power frequency variation, and harmonics are present. This paper proposes a new power line conditioner called Universal Power Line Manager for micro grid. The power circuit of a general universal power line manager (UPLM) is based on the combination of UPQC, UPFC and frequency changer (matrix converter). This equipment incorporates compensation functions like voltage sag, voltage swell, reactive power compensation, current harmonic rejection, real power flow control, damping the system and also provides frequency regulation. For this integration, the compensator proposed in this paper will be called as the Universal Power Line Manager (UPLM). Simulation results are presented to confirm that the new approach has better performance over the existing power quality conditioners in micro grid.
    01/2011;
  • P. JenoPaul, I. Jacob Raglend, T. Ruban Deva Prakash
    [Show abstract] [Hide abstract]
    ABSTRACT: The paper proposes a new power line conditioner called universal power line manager. The power circuit of a general universal power line manager (UPLM) is based on the combination of UPQC, UPFC and frequency changer (matrix converter). This equipment incorporates compensation functions like voltage sag, voltage swell, reactive power compensation, current harmonic rejection, real power flow control, damping the system and also provides frequency regulation. Integrated series and parallel active filter (UPQC) is a universal solution for the most power quality problems in distribution systems and the integrated series and shunt active converter (UPFC) compensates the reactive power and power flow control in distributed system. The matrix converter is used for the frequency regulation. For these integration, the compensator proposed in this paper will be called as the Universal Power Line manager (UPLM). Simulation results are presented to confirm that the new approach has better performance over the existing power quality conditioners.
    Sustainable Energy and Intelligent Systems (SEISCON 2011), International Conference on; 01/2011
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    ABSTRACT: Market clearing price (MCP) has been the prime operating function for a pool operator in energy trading scenario. Its main objective is to maximize the social welfare function where the society i.e. both the generating companies and the consumers are benefited and unbiased. Many researchers take stepped bid functions of both the generators and consumers as inputs for determining MCP (λ). But owing to reason of having less information and less realistic, quadratic bidding functions are preferred and a closed form solution scheme with and without loss have been developed. Gradient technique has been used for finding the mcp when losses are considered. All the above solution has been interpreted using graphical approach. The proposed approach has been tested on a 30 bus system and a 3 unit system. From the results, a conceptual understanding has been made and how various market conditions have an impact on the MCP is discussed. The results obtained are quite encouraging and useful for the present context of deregulation and restructuring of electricity market. MATLAB 7.0 has been used to carry out the simulation.
    Utility Exhibition on Power and Energy Systems: Issues & Prospects for Asia (ICUE), 2011 International Conference and; 01/2011

Publication Stats

35 Citations
8.80 Total Impact Points

Institutions

  • 2010–2012
    • Noorul Islam University
      • Department of Electrical & Electronics Engineering
      Kumaralingam, Tamil Nādu, India
  • 2009
    • VIT University
      • School of Electrical Engineering (SELECT)
      Velluru, Tamil Nādu, India
  • 2006
    • Indian Institute of Technology Roorkee
      • Department of Electrical Engineering
      Roorkee, Uttarakhand, India