STAR ACADEMY OF TECHNOLOGY AND MANAGEMENT, INDORE

Dept. Of Electrical & Electronics

Presentation on

Activities of electrical and electronics in coal industry

Submitted to:- Submitted by:-

Er. Afroj Mansoori Abhishek Kumar

(H.O.D Ex. Deoartement) 0857EX081001

Acknowledgement • Expressing gratitude is one the most difficult task and words often fall

short in reflecting any individuals feeling. It is my privilege to acknowledge those who helped and guided me throughout my journey of this project and I undertake this task with at most sincerity.

• I am thankful to Er.Afaroz Mansoori H.O.D. of Electrical and Electronics Dept., Star Academy of Technology and Management Indore without their guidance and generous support this project wouldn’t have been possible. I am indebted to his helpful solutions and comments enriched by their useful tips which helped me in improving the project from time to time.

 • I am thankful to express deep sense of gratitude to Er. Sunil Jat

(Project In-Charge) and Name of guide (Project Guide) Dept. of Electrical and Electronics SATM Indore for their able supervision, constructive criticism, affectionate treatment, encouragement and providing me adequate facilities for completion of this project.

Abhishek kumar

08557EX081001

Certificate

• This is to certify that the dissertation entitled “Activities of Electrical and Electronics department in coal industry ” submitted to the Rajiv Gandhi Vishwavidyalaya, Bhopal, by Abhishek kumar (0857EX081001), during the academic year 2011-2012, is a record of his/her own work and is accepted as a partial fulfillment of part of VII semester curriculum in Bachelor of Engineering (Electrical and Electronics ) Major Project.

Contents

1.Coal India limited• History• Introduction to Coal India Limited• Subsidiaries

2. CMPDI

Introduction

Function

3. Objectives of Electrical & Electronics Department

4. Electronics Lab

IC detectore

Methanometers

5. Automation in Mines

Environmental Telemonitring System

6. 33kv Overhead transmission lines un open cast mines

History & Introduction to Coal India Limited

Coal India was found in 1973 as coal mines Authority limited .In 1975 it was change into Coal India limited as a holding company with five subsidiary

1. Bharat Cooking Coal India Limited (BCCL,Dhanbad , Jharkhand)

2. Central Coalfield Limited (CCl, Ranchi, Jharkhand)

3. Western Coalfields limited (Nagpur region)

4. Central Mine Planning an Design Institute limited (CMPDI Ranch, jharkhand)

In 1985 two more subsidiaries were added:

5. Southeastern Coalfield Limited (SECL, Bilaspur)

6. Northern Coalfield limited (NCL, Siliguri)

Introduction

India is the world’s third largest coal producing country

Head office of coal India Limited is located at Kolkata

Contributes around 85% of coal production in India.

Employs nearly 4.25 Lakh persons and is the largest corporate employer in the country.

• Is one of the largest companies in the country, turnover begins around Rs.386.31 Billion in 2009-2010.

• Is one of the largest tax payer• The dividend for the fiscal 2009-10 is the largest ever paid by CIL. It

constitutes 35% of the paid –up equity of Rs.6316.36 crores.• During the previous financial year CIL paid dividend of 27% amounting to

Rs.1705.42 crores.

CMPDI

CMPDI (Central Mine Planning & Design institute Limited) an ISO company holds the pre eminent position as India’s one of the Largest consultancy organization offering full range services in the sphere of resources exploration and development in exploration, Mining, Coal & Mineral preparation, utilization and management, coal material handing arrangement

CMPDI coal is an consulting body under the CIL (COAL INDIA LIMITED ) that plans and designs the mining projects and allied engineering services undertaken by various subsidiary coal companies under CIL. It has the headquarters at Ranchi, the capital of newly formed state of Jharkhand.

Objectives

Planning identification, and qualification for mining industry .

To assist user in planning and introduction of electronics techniques.

• To provides field test facilities in the experiment mines to the various

technology development project.

Formulating long and short term strategies

Function

Monitoring the functions of the subsidiary companies.

Coordinating with the ministries of coal, ministries of railways, planning

commission etc.

Introduction of new technology.

Mobilization of resources

Accounting policies

Objectives of Electrical and Electronics Dept.

Calibration and repair of sensor and gas detectors.

Repair and maintenance of microprocessor based environmental monitoring

system of mines.

Test and repair of VHF communication sets, control card of HEMM

Indigenisation of imported control cards of washeries like Bhojudih, Rajarappa, and Kargil etc.

It also perform various R&D activities like research and various telecommunication system.

The heavy duty high capacity machinery such as dumpers, shovels, draglines etc. are fitted with HEMM (heavy Earth Moving Machines) cards. These cards need to repaired for minor problems. The ICs can be replaced and also the other components such as diodes, zener diodes, transistors, resistances etc.

IC testing

It perform the following function:-

1.Test function:-Test the IC in/out of circuit, performs V-I test, short/open/voltage test, IC interconnection test, short locator test or self test.

2. Search function:-Identifies an unknown IC in or out of the library.

3. Compare function:-Select various system operating parameters.

4. Configure function:-Use the test basic interpreters parameters.

5. Utility function:-Perform various life handling function.

Few example of IC used in Electrical & Communication part:-

Digital IC:-

1. CD4049 : 16 pins Hexainverting buffer

2. CD4013 : 24 pins Dual D type flip flop

3. CD4508 : 14 pins Dual 4 bit latch

4. CD4903 : 14 pin Quad 2i/p NAND gate

5. CD4538 : 16 pin Dual retriggerable Monoatable

Analog IC:-

1. LM124 : 14 pin Quad operational Amplifier

2. LM339 : 14 Quad comparator

Methanometer

Mathanometers are hand held devices and are used to measure the percentage of methane at a particular place in underground mines. It is very important device as it tells the percentage of methane. Presence of methane above a certain level is very dangerous, it can result in explosion of underground mines too. The maximum permissible level is 2.5% when the percentage reaches 2, the mines are evacuated and declared unsafe till the problem has been dealt with. This measure device is catalytic type. It needs a battery for it operation. It may be moving coil or digital LCD depending on the type of Methanometer.

It consists of a micro switch with an actuator of the device. It consists of a micro switch with an actuator arm to push buttons provide on the handheld device. The devices which are digital, make use of IC instead of moving coil set up. This device needs to be calibrated every 90 days as per the decision of the management for mine safety.

A figure of Methanometer in mine

Automation in Mines

It is the use of control system such as numerical control, programmable logic control, and other industrial logic control systems in other application of I.T such computer aided technologies (CAD,CAM), to control industrial and process, reducing the need for human intervention.

Advantages :-

1. Replacing human operators in tedious tasks

2. Replacing human tasks that should be done in dangerous environment (fire,

space, volcano and underwater

3.Making the tasks that is beyond human capabilities such as handling heavy

loads

Disadvantage:-

1. Technology limits

2. Initial costs relative high. The automation new products require huge initial

investment.

Automation tools:-

1. ANN : Artificial Neural network

2. HMI : Human Machine Interface

3. PLC : Programmable logic Controller

4. Robotics

5. DCS : Distributed Control System

PLC

• NEMA, the National Electrical Manufacture Association defines PLC as – “A programmable logic controller is digitally operating electronic apparatus which uses a programmable memory for the internal storage of instruction for implementing specific functions.”

These are logic, sequence, timing counting and arithmetic, to control through digital or analog input and output operations in various types of machines.

Components of PLC:-

1. PROCESSOR OR CPU

2. RACK OR MOUNTING

3. OUTPU INPUT ASSEMBLY

4. POWER SUPPLY

5. PROGRAM UNIT

Different area of nodes are:-

1. CENTAL CONSOLE

2. CHP (COAL HANDLING PLANT)

3. DUST SUPPRESION ARRANGEMENT

4. DOMESTICS EFFLUENT TREATEMENT

5. WORKSHOP EFFLUENT TREATMENT

Fig1. Coal handling plant and fig2.dust separation arrangement

33kv OVERHEAD TRANSMISSION LINES FOR OPEN CAST MINES

• General transmission and distribution of power is done at 33kv, and distribution at 11/6.6/3.3 kv, where as L.T. distribution is done at 415/ 240 v.

• The scope of the work for construction of any overhead transmission line comprises design, supply, erection, stringing, testing, and a commissioning, The work includes :

 • Supply and erection of 33kV Overhead transmission lines on single pole, double

pole and four pole structures depending on a site condition.

• Handling of conductors, stringing, sagging, conductors jointing accessories, earthing, facilities, terminal and connections.

Alignment and transmission of 33kv for open cast mine are as follow:-

1. ROUTE SURVEY

2. VOLTAGE REGULATION

3. Erection of support and concreting

4. Fixing pins, pains, insulators and mounting cross arms

5. Laying and stringing of conductor

6. Joining of conductor

7. Sagging and tensioning of conductor and binding of insulator

8. Guarding of conductors

9. Earthing

10. Testing and commissioning of line

Types of conductor used in transmission for open cast mines

FOR (ACSR CONDUCTOR):-

1. SQUIRREL

2. RABBIT

3. RACCON

4. DOG

5. WOLF

6. PANTHER

7. GNAT

8. ANT

Referance

Thank You