MAYURAKSHI INSTITUTE OF ENGINEERING & TECHNOLOGY

SUMMER TRANNING AT

OIL & NATURAL GAS CORPORATION LIMITED

TRAINEE RAMLAL CHOUDHARY

COMPANY PROFILE• Established in 1956 in India.• It is ranked 22nd among the Top 250 Global Energy

Companies and 5th in Asia.• ONGC is world's NO. 3 Exploration and production

company.• Founder of ONGC- Late Shri K D Malviya • Head office of ONGC in situated in dehradun , India• ONGC responsible for extraction & production of

crude oil in India .

Principle & operation of generator :-

• A generator is a machine by which mechanical energy is transformed into electrical energy.

• Generators can be sub-divided into two major categories depending on the electric current produced is alternating current (AC) or direct current (DC)

• The basic principle on which both types of generator works is the same

N

N

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FIELD WINDINGPOLE

ARMATURE

BASE

COMMUTATOR

YOKE

• The Generator Works upon the Principle of Faraday's law of electromagnetic induction.

• 'when a conductor moves in a magnetic field (cutting the magnetic flux lines), an emf gets induced in the conductor'.

• The direction of induced emf can be determined with help of Fleming's right hand rule

Installed DG SET at KDM Complex• Company name = cummins• Manufacturing Date :- 04 – 05 -2002• Model :- NT-495-G• Rating = 100 KVA• Power factor = 0.8• Output voltage = 415 V• RPM = 1500• Frequency = 50 Hz• Output Current = 139 A• Noise = 65-75 db

Short Comings of Existing DG SET

• Capacity of installed DG SET is not as per actual load it fulfil the utility requirements of KDM complex.

• Generator is not suitable for environment.• Existing DG SET is not energy efficient.• Fuel consumption is high. • High maintenance required.• Generates high noise (65-75db).

ELECTRICAL LOAD AT KDM COMPLEX JODHPUR

TYPES OF ELECTRICAL LOADS INSTALLED

LOADHR SECTION 30,062W

F&A SECTION 28,029W

Geology & Chemistry SECTION 28,153 W

ENGG SECTION 45,440W

HFB & PRODUCTION SECTION 25,731W

CMC SECTION 7,122W

DRILL SECTION 28,268W

SCADA 76,554W

LOGISTIC SECTION 13,877W

MM SECTION 8,856W

SECURITY SECTION 3,751W

CANTEEN 2,780w

WATER MOTORS 11,190w

AREA LIGHTS + STREET LIGHTS 5,718w

TUBE LIGHTS car parking 240w

TOTAL POWER 310805 W

TOTAL POWER CONSUMPTION IN KDM COMPLEX ,JODHPUR 310.805 KW

CALCULATION FOR PROPOSED DG SET

• TOTAL EXISTING LOAD: 311 KW

• CONSIDERING POWER FACTOR =0.8 311/0.8 – 388.75 KVA

• THEN EXISTING LOAD IN KVA=388.75

• SAY TOTAL =400 KVA

PROPOSED DG SET

• Capacity =400 KVA• OUTPUT CURRENT= 400 v• Hz = 50 • Phase = 3 • Rpm = 1500• NOISE (db) = <75

AVALIABLE GENERATORS OF COMPANY

• Cummins Diesel Generator Set (QSN14 Series)

Engine • Cummins QSN14 series, 6 cylinder, 4 stroke, water

cooled engine .• Compact in size with optimum power • Dual fuel filter system .• Water & Fuel sensor are connected .• Coolant in cooling system is circulated in the engine

to maintain temp. in engine.

Alternator• An alternator is an electromechanical device that converts

mechanical energy to electrical energy in the form of alternating current. It may be called an AC.

• Stamford HC alternator Cummins Generator Technologies .• 3 Phase . • Better motor starting capability .• Best in class efficiency .��• Compact design with sealed bearings for longer life and lesser maintenance .• Better mechanical strength .• suitable for operation at 1500 RPM, 415 Volts, 0.8 pf , suitable for 50 Hz, 3 phase, 4 wire system.

Auto start system

• Power Start operates on 12 V DC batteries• Auto start mode accepts a ground signal from

remote devices to automatically start the DG set.

• Engine Starting – The control system supports automatic engine starting .

• Controller provide time delay of 0-300 secs to start after remote start signal and time delay of 0-600 secs prior to shutdown after stop signal.

• SILENCER • Silencer absorb high noise 1m area in 100% working• less Noise create <75db

• VIBRATION PAD • Vibration pad absorb the vibration working condition in dg set.

Technical Data • Power Rating kVA = 400 • No. of Phases = 3• Output Voltage and Frequency (V and Hz) = 415 V, 50 Hz• Power Factor = 0.8 (lagging)• Current (A) = 556• RPM = 1500• Fuel consumption @75% load with radiator and fan* = 67.45 (litre/hr)• Fuel consumption @100% load with radiator and fan* = 88 (litre/hr)• NOISE (db) = <75 db• PRICE = 23,36,706 Rs

S.N Technical Data CUMMINS NEW

CUMMINS OLD

1. FUEL CONSUMPTION100% load

88 (LTRS/HR) 22

75% load 67.45 17

2. POWER RATING(KVA) 400 100

3. O/P VOLTAGE & FREQUENCY

415 V / 50 HZ 400 V / 50 HZ

4. ENGINE Cummins QSN14 series, 6 cylinder, In-line 4 stroke, radiator cooled engine

Cummins 6BT5.9-G2 , 6 cylinder , 4 stroke engine

5. PRICE 23,36,706 Rs 6,25,933 Rs

6. Current (A) 556 150

7. Alternator Stamford Stamford (Single bearing, Brushless, Self-excited)