Unique @EEE

High Voltage Engineering Laboratory

The Department always upholds a research culture, in parallel with the overall teaching-learning process. The outcome is the papers published by the students and faculty in National and International conferences and journals. Some of the research areas of focus a
Overview of the Program:
High Voltage laboratory is one of the newly established laboratories of Electrical Engineering Department of maximum Rating 100kV.Major Activities are research and development, consultancy and classes for Undergraduates and post graduates. High Voltage laboratory at IARE is also extensively engaged in research and development works in the areas of breakdown phenomenon in insulating medias, withstand voltage in different types of air gaps, surface flashover studies on equipment and also electrical interference studies due to discharges from the equipment operating on high voltages. This lab also provides test facilities for testing various HV equipment as per various international standards to electric utilities and Industries. The main Laboratory equipment consists of:
1. 100kV, 50 mA (Cascaded) Testing transformer with control panel
2. 100mm Sphere gap assembly with water resistor and micrometer scale
3. Rod- gap apparatus with uniform and non- uniform electrodes
4. Horn Gap Apparatus
5. Capacitive voltage divider
6. Breakdown Strength of Oil test (100kV)
7. Milli volt drop test (50A)
8. Earth Megger with accessories

  • 100kV, 50 mA (Cascaded) Testing transformer with control panel
  • Rod Gap apparatus can be used to study the flashover characteristics between different types of electrodes.

· Plate to Plate (Uniform gap)
· Point to Point (Non uniform gap)
· Square to square Studies can also made by using different combinations of the electrodes. The effect of polarity on the flashover between different types of electrodes can also be studied in case of D.C. Voltage

  • Sphere gap is an absolute method of measurement of the peak value of high voltage, for alternating and 1/50 microsecond’s impulse voltages for spacing up to 0.5D (D= Sphere diameter). It can be measured accurately with + or – 3%. For direct voltage measure, in the absence of excessive dust the results are considered accurate within + or – 5% for spacing not greater than 0.4D.
  • The Horn Gap Apparatus is used in the analysis of arc generated in a Horn Gap. It mainly consists of high voltage transformer with horn gap assembly incorporated into a single unit.

Perspex shield is provided to protect the horns from air disturbances. Necessary push-button switch is provided to see the movement of the arc.

  • The Oil Test Kit is used in testing of insulation level of oils used in transformers, bushings, capacitors, etc. This tester enables the operator to measure the high voltage dielectric breakdown level of oils.
  • Earth Tester is a completely self-contained instrument designed to give accurate measurement of earth electrode resistance, soil resistivity, earth continuity and Neutral Earth loop tests for IEEE wiring regulations. An AC brushless generator is used to provide alternating current which is passed through the soil to overcome interference from stray currents. An electronic converter is used to convert AC to DC for measurements. The basic system employed in this instrument incorporates a hand driven AC generator to pass a test current between earth electrode under test and a current electrode. The potential drop across the test electrode and a separate intermediate electrode i.e., P1 & P2 is rectified and passed to a moving coil micro ammeter.

Course Contents:

Week/Date Content

Week1

Day1

Introduction to high voltage Engineering lab and explain safety norms

Day2

Explanation of 100kV, 50 mA (Cascaded) Testing transformer with control panel

Day3

Conduct experiment for finding break down strength of two medium

Day4

Conduct experiment for finding break down strength of  horizontal Sphere gaps

Day5

Conduct experiment on Sphere gap equipment with 50mm Data

Day6

Conduct experiment on Sphere gap equipment with 100mm Data

Week2

Day1

Conduct experiment on Rod gap equipment with Pointed electrode

Day2

Conduct experiment on Rod gap equipment with tipped electrode

Day3

Conduct experiment on Rod gap equipment with parallel plateelectrode

Day4

Conduct experiment on Rod gap equipment with solid medium

Day5

Conduct experiment on Rod gap equipment with Insulator medium

Day6

Measurement of AC voltages by using sphere gap and rod gap

Week3

Day1

Dielectric oil testing using H.T testing Kit

Day2

Conduct Experiment on Horn gap apparatus

Day3

Conduct Experiment on Horn gap apparatus

Day4

Conduct experiment on Milli volt drop test

Day5

Conduct experiment on Earth Megger with accessories

Day6

Revision

Objectives of the programme:

  • To understand the principles of theory of high voltage generation and measurements.
  • To understand the operation of high voltage power supplies for ac, dc, and impulse voltages
  • To get familiar with various applications where high voltage field is used.
  • To understand breakdown 0f HV insulation (solid, Liquid and Gas).
  • To understand lightning phenomena and HV Insulation Environmental pollution.

Outcomeof the programme:

At the end of the course the students will be able to:

  • Understand breakdown phenomena in gases and to elucidate the concepts used for the generation of high voltages and currents.
  • Elucidate the concepts used for the measurement of high voltages and currents and design corresponding circuits.
  • Understand high voltage testing techniques of Power apparatus and causes of over voltage in Power systems.
  • Design the layout of Gas Insulated substations and to know the concepts of insulation coordination. 

Training Duration: Twice in semester:3 weeks duration; From 4 PM to 6 PM.Contact:

Mr. A Sathish Kumar
Assistant Professor
Department of Electrical and Electronics Engineering
Phone: 8179184578
Mail ID: a.satishkumar@iare.ac.in

Solar Energy

Over View:
Solar energy available in plenty. Fossil fuel like coal, petroleum, gases etc. are going to be depleted in a matter of the decades. That is why government of India is placing lot of emphasis on generation of power through solar energy. In a unique proposition IARE has set up  a laboratory for providing hands on experiences and research facility students and faculty in this area.
 Objective:

  • To familiarize the students with solar power generation technology.
  • To provide hands an experience to characterize solar ponds.
  • To enable students to do projects in this area.

 Course Content:
A Prototype type solar power plant of 100W capacity is provided for the students to conduct   experiments on solar plants.
List of other experiments on solar energy,

Week / Date Content

Week1

Day1

Charge controllers for controlling battery charge such that over and under charging is prevented.

Day2

Solar oven and solar cookers.

Day3

Solar inverter with battery charging controller and MPPT off grid and grid connected inverter.

Day4

Solar water heating system with temperature controller, pump and heating element.

Day5

Solar powered water quality improvement using capacitive de ionization (CDI  principle)

Day6

Solar water desalination plant prototype to produce potable water from brackish water

Week2

Day7

Instantaneous over currently protection of solar panels.

Day8

Determination of parameters and modeling of solar panels

Day9

Spectral sensitivity with color changing lights to demonstrate effect of wave length of light on performance of solar pond. 

Day10

Drawing current and voltage characteristic curve of a solar pond.

Day11

Data acquisition of solar panels using temperature, voltage and current.

Day12

Solar sensor maximum power point tracker.

Week3

Day13

Sun simulator using various light sources to approximate sunlight for the purpose of testing solar ponds.

Day14

Solar panel data display in website using WIFI.

Day15

Solar water pumps using variable voltage variable frequency induction motor drive.

Day16

Solar panel manufactures using solar cells by interconnecting then to get desired voltage and power rating.

Objective:

  • To familiarize the students with solar power generation technology.
  • To provide hands an experience to characterize solar ponds.
  • To enable students to do projects in this area

 Outcomes:

  • Student will be able to design, install and operate solar power plants in a commercial solar system.
  • Students will be able to design and integrate off and grid connected solar power generation system.

Contact:
Mr. K Lingaswamy Reddy
Assistant Professor of Electrical and Electrical Engineering
Phone: 9666795221
E-Mail ID: kandadilinagareddy@gmail.com

Power Systems Laboratory

Overview:

The electric power system is probably the largest man-made system in the world. Despite the fact that it is over a hundred years since electricity was introduced on a larger scale as an energy carrier, no other energy form has proved to surpass its outstanding properties in form of flexibility, cleanness, compactness, etc. It is a matter of fact that virtually no activity in a modern society can take place without electricity. Furthermore, the dependency on cheap and reliable supply of electric power has increased in the age of information technology. 

The focus of research in the power systems area has changed over the years. Initially the main themes were related to expansion and voltage upgrading of the power systems. These areas are still of interest in many developing countries, while in the industrialized countries the research areas of main interest are system security, or reliability, and system efficiency. System security is motivated by the higher dependency of electric power, and to achieve higher efficiency is a natural in a system that involves large economical values. The research of the Power Systems Laboratory addresses both these issues. 

The research of the Power Systems Laboratory is addressing important questions and problems in the power industry described above. In the individual projects described system theory is used to study and design solutions for the power systems incorporating the most advanced communication and information technologies.

Objectives:

To work in power industry, it is very important to be able to handle various power system equipment like synchronous machine, DC machine, Induction machine, transformers and transmission lines. This laboratory is designed to give students a hands-on experience on different equipment of electrical power system. To allow students to practically verify several concepts and procedures learned in power system modeling and analysis. To develop hands-on experience of how certain procedures of power system operation are carried out To study the protection of equipment and system by relays in conjunction with switchgear.

Course Contents:

Week / Date Content

Week - 1

Day 1

Introduction to power systems lab

Day 2

Characteristics of MCB & HRC Fuse.

Day 3

Study of Transmission line using transmission line simulator.

Day 4

Operating characteristics of IDMT relay.

Day 5

Performance of Earth fault relay.

Week - 2

Day 6

Performance of an over voltage relay.

Day 7

Performance of under voltage relay.

Day 8

ABCD, Hybrid & Image parameters of a model of transmission line.

Day 9

Performance of a transmission line under no load condition & under load at different power factors.

Day 10

To observe the Ferranti effect in a model of transmission line.

Week - 3

Day 11

Study the performance of a Long transmission line under load at different power factors.

Day 12

Reactive power compensation in a Transmission line.

Day 13

To study Percentage differential relay.

Day 14

To determine the Negative and zero sequence reactance of an alternator.

Day 15

To determine fault current for L-G, L-L, L-L-G and L-L-L faults at the terminals of an alternator at very low excitation

Outcomes
At the end of the course, students should be able to:

  • Understand how to measure electrical parameters characteristics of a 3-phase transmission line.
  • Understand the significance of extra data requirement needed for system stability studies and are able to prepare such data for practical system studies.
  • Review sequence impedances of salient pole synchronous machine and 3-ph transformer.
  • Experiment the characteristics of OC, UV/OV, negative sequence relays

Training Duration: Twice in semester; 3 weeks duration; From 4 PM to 6 PM.

Contact:
Mr. G. Hari Krishna
Assistant Professor of Electrical and Electronics Engineering
Phone: 9948112668
e-mail: g.harikrishna@iare.ac.in

Programmablelogic Controllers Laboratory

Over View:
A programmable logic controller (PLC), or programmable controller is an industrially hardened digital computer specially designed for the control of manufacturing processes, such as assembly lines for producing various products, or robotic devices, or any activity that requires high reliability and precision.They can be programmed and reprogrammed depending on the requirements without changing any hardware. In contrast with purely electronic or relay based systems known as hardwired logic a programmable logic controller provides greater flexibility.
Objective:
They were first developed in the automobile industry to provide flexible, rugged and easily programmable controllers to replace hard-wired relays and timers. Since then they have been widely adopted as high-reliability automation controllers suitable for harsh environments. PLCs can range from small devices with few I/O in a housing integral with the processor, to large rack-mounted modules with thousands of I/O which are networked to other PLCs.
Course Contents:

Week/Date Content

Week1

Day1

Hardware and software implementation of  start/stop logic for a squirrel cage induction motor

Day2

Hardware and software to implementation of  an On Delay Timer, Off Delay Timer and retentive timer

Day3

Hardware and software to implementation of a direct on line starter (DOL starter) for a three phase squirrel cage or three phase slip ring induction motor.

Day4

Hardware and software to implement a traffic lights control system at the junction of two roads meeting perpendicularly.

Day5

Hardware and software to implement a traffic lights control system at the junction of two roads meeting perpendicularly

Day6

Hardware and software to implement a stair case light control

Week2

Day1

Hardware and software to implement a switching system where same push button causes the motor to start when pressed once and causes it to stop when pressed again.

Day2

Hardware and software to implement a motor controller which should start both main motor and its lubrication pump motor simultaneously but allows the lubrication pump motor to run for 30seconds more after the main motor is switched off.

Day3

Hardware and software to implement a motor controller for a three phase squirrel cage or three phase slip ring induction motor  to run forward or reverse as chosen by the operator by pressing the appropriate button.

Day4

Hardware and software to implement a system using a software counter in programmable logic controller to keep a day’s production record from a particular machine

Day5

Hardware and software to implement a system using a software up down counter in programmable logic controller to keep a count of number of items in a storehouse

Day6

Hardware and software to implement a system using programmable logic controller display a 24 hour clock with software counters

Week3

Day1

Hardware and software to implement a delay on timer using software timers in a programmable logic controllers

Day2

Hardware and software to implement a delay off timer using

Day3

Software timers in a programmable logic controllers

Day4

Hardware and software to implement sequential starting of three induction motors one after another with a fixed time delay after the previous motor started using software timers in programmable logic controllers.

Day5

Hardware and software to implement a water level controller with pump motorcontrol using four switches.

Day6

Hardware and software to implement a stirrer to mix thoroughly two chemicals one of which is a liquid and the other a powder using counters and software timers in a programmable logic controller.

Out comes:
At the end of the course the students will be able to:

  • Students will be able to apply the knowledge of PLCs in day to day work in troubleshooting of equipment.
  • Student will be able to design and integrate entire system to create an industrial production live with human machine interface, SCADA and with various sensors and other PLC’s and computers.
  • Student will be able to program PLC’s for obtaining desired output as well as modify as required.

Training Duration: Twice in semester:3 weeks duration; From 4 PM to 6 PM.Contact:
Dr. PM Sarama
Professor of Electrical and Electronics Engineering
Phone: 9705462185
Email: pmsarma2010@gmail.com