RESEARCH ACTIVITIES

  1. Name of the Faculty :  Mr. Sudhir Sharma

    1. Title(s) of research work executed/ on going by the faculty. 

Power Quality Investigations due to Presence of Induction Generators in Electrical System.

    1. Status : Executed/ On going.    :           On going
    2. Brief description of the research work

Wind energy continued its dynamic growth worldwide in the year 2006. 14.900 MW was added in the past year summing up to a global installed capacity of 73.904 MW by the end of December 2006. The added capacity equals a growth rate of 25 %, after 24 % in 2005. The currently installed wind power capacity generates more than 1 % of the global electricity consumption. Based on the accelerated development, WWEA has increased its prediction for 2010 and expects now 160.000 MW to be installed by the end of 2010. Five countries added more than 1000 MW: the United States of America (2.454 MW), Germany (2.194 MW), India (1.840 MW) and Spain (1.587 MW) were able to secure their leading market positions and China (1.145 MW) joined the group of the now top five markets and is now number five in terms of added capacity. The total installed capacity in India by the end of 2006 was 6.270 MW. This huge increase the amount of wind power generation has surpassed the capability of the infrastructure for which it was designed. The infrastructure was built to support small, scattered wind generation. Similarly, because wind plants were so small in the past, the rules governing wind generation were more relaxed to encourage development. For example, in the past, wind turbines were only required to have capacitor compensation at each turbine to satisfy the no-load reactive power generation. But as the amount of wind generation increases, the lack of rules, standards, and regulations during early wind development has proven to be an increasing threat to the stability and power quality of the interconnected grid. The primary factor in the deterioration of the power quality is the voltage quality generated by said wind turbine generators. The large reactive current has sufficient time to create a brief increase in the voltage drop at the line side and hence lead to the disruption of the voltage quality. The higher rated turbine generators have a greater current than smaller ones and, therefore, have a greater affect on grid voltage levels. Variations in wind speeds cause the output voltage of the wind turbine to vary.
Although many operational aspects affect wind power plant operation, but we focus on power quality and methods to improve the power quality. We are using simpower system toolbox of Simulink MATLAB 7.0.4.

_________________________________________________________________________________________________________

2.  Name of the Faculty   :Ms Chintu Rza

    1.         Title(s) of research work executed/ on going by the faculty. 

Analysis of Grounding Systems With Oblique Conductors

    1. Status : Executed/ On going.    :   Executed     
    2. Brief description of the research work

Grounding system design for an ac substation essentially requires predetermination of ground resistance and earth surface potential distribution due to the flow of the grid current. The potential rise of the grounding system and all metallic structures which are connected to the grounding system due to the flow of the grid current is called Ground Potential Rise(GPR). GPR in a power station is equal to the product of ground resistance and grid current.  In this work a computer algorithm is developed for analysis of grounding system having any complex geometry that can be split into linear segments. Based on the algorithm, a computer program AGWOC(Analysis of Grounding system with oblique conductors ) has been developed in VISUAL BASIC. The program is tested for a number of grounding system configurations placed in homogeneous and non homogeneous soil. A methodology is also developed for analyzing any practical three dimensional electrode configuration in homogeneous as well as non homogeneous soil. The test problems with varying degree of complexities and for which results are available in the literature have been chosen for verifying the validity of the computer program developed in this work

_________________________________________________________________________________________________________

3.Name of the Faculty     :      Ms. Shivani Mehta

    1. Title(s) of research work executed/ on going by the faculty. 

Simulation of Optical Fiber based transformer temperature monitoring system

    1. Status : Executed/ On going.    :           Executed

Brief description of the research work
In this research work, a temperature monitoring system for transformers is analyzed and simulated, which is based on generic microbend fiber optic sensor technology. Simulation is done by constructing the model using simulink toolbox of matlab to evaluate the effectiveness of the sensor. Certain iterations are performed to achieve the maximum linearity of the optical fiber microbend sensor when applied to transformer.
The transformers are extremely sensitive to partial discharges. Partial discharges in the transformers may lead to the destruction of the solid insulation. These partial discharges in the transformers leads to irreversible damage and disintegration of the interturn insulation. This causes interturn short circuit and subsequently leads to a local overheating by induced currents. This can breakdown the complete system that may be accompanied by fire hazards. In order to prevent failure it is necessary to monitor transformers during operation by an appropriate monitoring system. If optical fiber sensors are used instead of electrical type sensors, the temperature of a transformer can be monitored efficiently. In case of overheating the transformer is shut down so as to avoid the consequential damages.
The principle of operation of this system is based on a temperature dependant shift of the optical transmission properties of an optical fiber cable. It protects the transformers against local overheating and guards the coil and core of the transformer.

_________________________________________________________________________________________________________

4. Name of the Faculty : Mrs Puneet Sokhi

    1. Title(s) of research work executed/ on going by the faculty. 
      1. Eddy current  and Skin Effect Analysis using Finite Element Adaptive Grids
    2. Status : Executed/ On going.    :   Executed  
    3. Brief description of the research work

Before Designing any electrical device or apparatus, eddy current analysis is prerequisite. So as to understand the behavior of the device, pre-determining the eddy current losses expedites the design process. The numerical technique used is finite element method. With the advent of digital computers, the numerical techniques like FEM have gained a global popularity. All the discrepancies experienced by earlier methods have been eradicated by using Finite Element Method.The level of accuracy is high and set up of design model is easier. Adaptivity restores the quadratic convergence with grid size  of magnetic energy, despite singularities occurring at the corners. It incorporates the complex boundary constraints with careful combination of flexibility and ease of programming in the use of algebraic equations
      Work done belongs to “Quasi-static field” problems and  “low frequency domain”.

_________________________________________________________________________________________________________

5. Name of the Faculty :  Mr  Inderdeep  Singh

    1. Title(s) of research work executed/ on going by the faculty. 

Deregulation in Electrical Market

    1. Status : Executed/ On going.    :           On going
    2. Brief description of the research work

        Transmission system congestion in a competitive electricity market refers to the overloading of lines or transformers due to market settlement.The chances of congestion in the deregulated market are quite high as compared to monopolistic market, as the customer would like to purchase electricity from cheapest available sources. The congestion is undesirable the system and should be alleviated for the secure operation of the system. Several methods of congestion management have been suggested in the literature, which either utilizes some financial instrument or use optimal power flow formulation for rescheduling output of sources/compensating devices as well as curtailment of loads. In different types of markets, the method of tackling the transmission congestion differs such as Price Area Congestion Management, Available Transfer Capability (ATC) based Congestion Management, and Optimal Power Flow (OPF) based Congestion Management

_________________________________________________________________________________________________________

6. Name of the Faculty   :  Mr. Baljit Singh

    1. Title(s) of research work executed/ on going by the faculty. 

                   Permanent  Magnetic Motor      

    1. Status : Executed/ On going.    :           On going

__________________________________________________________________________________

7.Name of the Faculty   : Mr. Sushil Prashar

    1. Title(s) of research work executed/ on going by the faculty. 
      1. Development of  a new change over switch
      2. Potection of energy meter from infrared rays.
    2. Status : Executed/ On going.    :           1st Executed   and 2nd Ongoing

 

_________________________________________________________________________________________________________

8. Name of the Faculty : Ms Meenu Khanna

    1. Title of research work executed/ on going by the faculty. 
      1. Multiobjective Economic Dispatch
    2. Status : Executed/ On going.    : Executed
    3. Brief description of the research work

By multiobjective economic dispatch we mean that we have to minimize both the cost and the emission level while considering the active as well as reactive power constraints. This project, has been completed using weightage and fuel switching method to minimize cost and emission level .