e.e d.l.w training report by ankit kumar en 2 year

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Ankit kumar B.tech/ en/ 2year TRAINING REPORT

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Page 1: E.E  D.l.W training report BY Ankit Kumar EN 2 year

Ankit kumar B.tech/ en/ 2year

TRAINING REPORT

Page 2: E.E  D.l.W training report BY Ankit Kumar EN 2 year

List of shop visited during 1 month training:-

ColonyA.C PlantM.R.STel. exchange

Page 3: E.E  D.l.W training report BY Ankit Kumar EN 2 year

A.C plant in D.L.W consists of centralized air conditioning system manufactured by

blue star and another one by voltas.This plant supply chilled air to the staff

rooms and halls of workshop where diesel engines are being manufactured

Page 4: E.E  D.l.W training report BY Ankit Kumar EN 2 year

A.C plant.

Page 5: E.E  D.l.W training report BY Ankit Kumar EN 2 year

• MAIN COMPONENT OF A.C PLANT ARE AS FOLLOWS:-

• *C.T fan.• *Condenser.• *Chiller.• *Compressor.• *A.H.U

Page 6: E.E  D.l.W training report BY Ankit Kumar EN 2 year

WORKING:-• (1.) C.T fan:- It is

situated over cooling tower .Heated water from condenser when passes across it then it takes heat from water and in the form of vapor it release heat energy to atmosphere and cooled air through fins gets stored in cooling tower tank .

Page 7: E.E  D.l.W training report BY Ankit Kumar EN 2 year

(2.) Compressor:- Floron 22 gas from cylinder is passed though compressor

where pressure of gas is increased to 220-270 psi. This high pressure gas passes to

condenser where it gets liquefied this liquefied gas passes through chiller where it cools water and then this low pressure

gas of 50-65 psi again enters to compressor and this circulation kept on

going till cooling process is done

Page 8: E.E  D.l.W training report BY Ankit Kumar EN 2 year

• (3.) Condenser:- In the condenser, the

temperature of the superheated vapour has to be brought down, before it can be condensed into a liquid. In the condenser, once the

• vapour has been cooled, it begins to condense.The high pressure gases get converted into liquid here and this liquid go to chiller tank.

• There are three types condensers viz.

• i) Air-Cooled ii)Water-Cooled iii) Evaporative. Water cooled condensers are used in Central AC Plants.

• (4.) Chiller:- In chiller water is passed

through water line and liquefied Floron gas passes through tank and the water passing in water line of chiller gets cooled and this water is transferred to A.H.U.

• (6.) A.H.U (Air Handling Unit):- In this section chilled air

is pass through water line which cools air surrounding this water line and this air through duct passes to the area which required cooling and the exhaust air from cooling area is again brought back to a.h.u through duct and this air again cooled and sent back to cooling area.

Page 9: E.E  D.l.W training report BY Ankit Kumar EN 2 year
Page 10: E.E  D.l.W training report BY Ankit Kumar EN 2 year

(5.) Cooling tower:- The cooling towers is used in conjunction with the water cooled condenser. Water in passing through the

condenser water tubes only gets warmed up but does not get contaminated. It can therefore be used again, after

cooling. The cooling tower cools the warm water for recirculating it in the condenser. It is thus a water conservation equipment. The heat removed by the

refrigeration system from the space or product to be cooled is ultimately thrown to the atmosphere through the cooling tower in a water-cooled condenser system. Thus the cooling tower should function efficiently for the refrigeration system to perform well

Page 11: E.E  D.l.W training report BY Ankit Kumar EN 2 year

• ADVANTAGE OF CENTRALISED AC PLANT:-

advantage of this

system is that the processing of air is centrally controlled and therefore a high standard of efficiency can be maintained.

DISADVANTAGE OF THIS SYSTEM:-

* Adjustment of individual room temperature as required from time to time is not possible. Therefore the system is definitely wrong from buildings which are split up into a number of small rooms, offices.

* It permits mixing of air, cigarette smoke, bacteria and odor between different areas of offices.

• * The ducting occupies an appreciable space.

Page 12: E.E  D.l.W training report BY Ankit Kumar EN 2 year

COLONYMain component of substation no.3 are:-• Transformer of 750kva• H.T and L.T panel• Capacitor bank

AREA OF SUPPLY:-• Hospital• Colony of DLW• Markets• Water pump

Page 13: E.E  D.l.W training report BY Ankit Kumar EN 2 year
Page 14: E.E  D.l.W training report BY Ankit Kumar EN 2 year

• Rating of transformer:-• Company name:-AREVA• Type of cooling:-ONAN (Oil Natural Air Natural)• KVA rating:-750KVA• H.T:-11kV, 39.4A• L.T:-415v, 1043.4A• Tfr winding:-DY11• MEANING OF DY11:• D:-Delta• Y:-Star• 11:-Phase displacement

Page 15: E.E  D.l.W training report BY Ankit Kumar EN 2 year

Oil Used In Transformer:- *Light Napthelic Distillate

• Earthing:-• It implies connection of non-current carrying parts

to ground like metallic enclosures.• Grounding:-• Grounding implies connection of current carrying

parts to ground.• Ring System:-• • More than one path available between the points.• Radial System:-• Only one path is available between two points.• Substation no.3 is based on ring system .

Page 16: E.E  D.l.W training report BY Ankit Kumar EN 2 year

132kv is supply to 2 and 6 no. substations

Other 7 are connected as shown in below figure

Page 17: E.E  D.l.W training report BY Ankit Kumar EN 2 year

• Buchholz relay• In the field of electric power distribution

and transmission, a Buchholz relay is a safety device mounted on some oil-filled power transformers and reactors, equipped with an external overhead oil reservoir called a "conservator". The Buchholz relay is used as a protective device sensitive to the effects of dielectric failure inside the equipment.

Page 18: E.E  D.l.W training report BY Ankit Kumar EN 2 year

Main Receiving Substation(MRS)• MRS receives main supply from UPPCL (Uttar

Pradesh Power Corporation Limited,)• This is step down with 7.5MVA transformer. The

33kv feeder is transformed is two 11kv feeder with a bus coupler in between.

• The MRS follows ring type distribution system for supplying power to D.L.W.The advantage of ring type system is that each substation is fed from two sides. If in case one line is faulted then the substation is fed from other line. But major disadvantages of ring type system are that it is too costly.

Page 19: E.E  D.l.W training report BY Ankit Kumar EN 2 year

Main component of MRS:-

Transformer.Control panel.Bus Coupler.Relays.Circuit Breaker.Capacitor Bank.

Page 20: E.E  D.l.W training report BY Ankit Kumar EN 2 year

DISTRIBUTION CHART:-

Page 21: E.E  D.l.W training report BY Ankit Kumar EN 2 year

CIRCUIT BREAKER:-• It is an automatic

operated switch designed to protect an electrical circuit from damage caused by overload or short circuit.

Page 22: E.E  D.l.W training report BY Ankit Kumar EN 2 year

• There are three D.G (Diesel Generator) sets in Mrs.:-

• (1.) 2600 H.P• (2.) 1200 H.P• (3.) 3500 H.P

Page 23: E.E  D.l.W training report BY Ankit Kumar EN 2 year

RELAYS:-• Relays are used for protection of the power

system from different faults which are occurring in the power system. A relay is a simple electromechanical switch made up of an electromagnets and a set of contacts. Relays are found hidden in all sorts of device.

• TWO TYPES OS RELAYS USED IN MRS ARE:-

• >Definite relay• >Inverse relay

Page 24: E.E  D.l.W training report BY Ankit Kumar EN 2 year

CONTROL PANEL:-

• Control panel is a flat, often vertical area where control or monitoring instruments are displayed.

Page 25: E.E  D.l.W training report BY Ankit Kumar EN 2 year

CAPACITOR BANK:-• In the electrical system the power factor

play a important role because by improving the power factor one can reduce losses .Generally power factor should not be brought below 0.8 for industrial loads. To improve power factor, capacitor bank are placed in parallel with the power supply. In DLW, 600KVAR capacitor bank is used for the improvement of power factor.

Page 26: E.E  D.l.W training report BY Ankit Kumar EN 2 year

Capacitor bank contd………..

• REASON FOR IMPROVEMENT OF POWER FACTOR:-

• *Reduced losses.• *Reactive power

decreased active power increases.

• *Efficiency of machine increases.