400 Kv Soja

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400 Kv Soja

  1. 1. WEL COME 400 KV S/S SOJA
  2. 2. Sub station <ul><li>Function of sub station is to receive electric power from generators or lines and to deliver to other lines with or without transformation. </li></ul><ul><li>Substation capacity is the total MVA capacity of transformers installed in the s/s. </li></ul>
  3. 3. 400 KV Bus 220 KV Bus 500 MVA 400/220 KV Transformer Incoming line Out going line Out going line Incoming line Simple schematic of sub-station lay-out
  4. 4. Sub-stations <ul><li>400 KV Sub stations </li></ul><ul><li>220 KV Sub stations </li></ul><ul><li>132 KV Sub stations </li></ul><ul><li>66 KV Sub stations </li></ul>
  5. 5. Sub-station equipments <ul><li>1. Switch yard equipments </li></ul><ul><li>2. Control Room Building equipments </li></ul>
  6. 6. Substation equipments <ul><li>Switch-yard equip. </li></ul><ul><ul><li>L.A. </li></ul></ul><ul><ul><li>C.V.T./P.T./C.C. </li></ul></ul><ul><ul><li>Wave Trap </li></ul></ul><ul><ul><li>Breaker </li></ul></ul><ul><ul><li>Isolator </li></ul></ul><ul><ul><li>Earthing switch </li></ul></ul><ul><ul><li>Power Transformer </li></ul></ul><ul><ul><li>Reactor </li></ul></ul><ul><ul><li>Capacitor bank </li></ul></ul><ul><ul><li>C.T. </li></ul></ul><ul><li>Control Room bldg. equip. </li></ul><ul><ul><li>Control panel </li></ul></ul><ul><ul><li>Relay panel </li></ul></ul><ul><ul><li>Metering panel </li></ul></ul><ul><ul><li>PLCC panel </li></ul></ul><ul><ul><li>RTU panel </li></ul></ul><ul><ul><li>Battery sets </li></ul></ul><ul><ul><li>DCDB & Charger </li></ul></ul><ul><ul><li>L.T.Panel board </li></ul></ul><ul><ul><li>Compressor panel </li></ul></ul><ul><ul><li>C/R desk equips: PCs, Telephones…etc </li></ul></ul>
  7. 8. L.A.
  8. 9. CVT CC VT / PT Only for PLCC. Allows to pass PLCC Signals through HF point. Secondary voltage of PT is used For Line Voltage measurement, line protection relays ,Synch. etc.
  9. 10. CVT Construction Details
  10. 11. Wave-Traps <ul><li>Line traps are either suspended from gantry or placed on pedestal insulators. </li></ul><ul><li>For 400 KV, 220 KV, 132 KV & 66 KV. </li></ul><ul><li>Allows to pass 50 Hz power frequency signal in to the switch-yard. Low impedance to LF. </li></ul><ul><li>Blocks HF (50 kHz – 500 kHz) signals to enter into S/Y. High impedance to HF. </li></ul><ul><li>Normal blocking band is 150 – 500 kHz. </li></ul>
  11. 12. Switch-yard equipments Wave Trap
  12. 13. Current Transformer (C.T.) <ul><li>C.Ts. Transforms current from say 1000 A to 1 A. </li></ul><ul><li>Metering and Protection </li></ul><ul><li>1000/1 A, 600/1 A, 300/1 A, 150/1 A </li></ul>
  13. 14. C.T.
  14. 15. Live Tank CTs
  15. 16. Dead tank PTs Hairpin design and Eye Bolt design
  16. 17. Circuit Breakers <ul><ul><li>On load switch </li></ul></ul><ul><ul><li>VCB </li></ul></ul><ul><ul><li>BOCB </li></ul></ul><ul><ul><li>MOCB </li></ul></ul><ul><ul><li>ABCB </li></ul></ul><ul><ul><li>SF6 </li></ul></ul>
  17. 18. LIVE TANK TYPE CLASIFICATION OF AIS BREAKERS
  18. 19. Classification of Breakers Indoor Switchgear (GIS) Outdoor breakers (AIS)
  19. 20. Isolator <ul><li>Off load switch </li></ul><ul><ul><li>Center Break </li></ul></ul><ul><ul><li>Double break </li></ul></ul><ul><ul><li>Pentograph </li></ul></ul><ul><ul><li>Tandem </li></ul></ul>
  20. 21. Power Transformer <ul><li>400 / 220 KV Transformer </li></ul><ul><ul><li>MVA Capacity & KV </li></ul></ul><ul><ul><li>Changes voltage levels. </li></ul></ul><ul><ul><li>Step-up & Step-down transformers. </li></ul></ul>
  21. 22. Transformer Parts <ul><li>Main Tank </li></ul><ul><li>HV & LV & NEUTRAL bushings </li></ul><ul><li>OLTC </li></ul><ul><li>Radiator </li></ul><ul><li>Breather </li></ul><ul><li>MOG </li></ul><ul><li>Explosion vent </li></ul><ul><li>Oil Circulating pump </li></ul><ul><li>Buchcholz relay . </li></ul><ul><li>PRV </li></ul><ul><li>OSR </li></ul><ul><li>OTI & ITS POCKET AT TOP PLATE. </li></ul><ul><li>WTI * ITS POCKET AT TOP PLATE. </li></ul><ul><li>Cooling fan </li></ul>
  22. 23. Power Transformer
  23. 24. Reactor
  24. 25. Capacitor Bank
  25. 26. Bus bar Arrangement <ul><li>Single bus bar </li></ul><ul><li>Single section bus-bar </li></ul><ul><li>Main and Transfer bus bar </li></ul><ul><li>Double bus and Transfer bus bar </li></ul>
  26. 27. Control Panel <ul><li>Semaphores </li></ul><ul><li>Annunciation schemes </li></ul><ul><li>TNC Switch </li></ul><ul><li>Isolator TNC switches </li></ul><ul><li>Indications for SF6 pr., ON/OFF breaker </li></ul><ul><li>Meters for MW,Amp,KV…with phase selection switch ...etc </li></ul><ul><li>DAS meter </li></ul><ul><li>Annunciation Relay </li></ul>
  27. 28. Relay Panel <ul><li>Relays for: </li></ul><ul><ul><li>Distance relay for lines Main-1/Main-2..Micromho,numerical…etc. </li></ul></ul><ul><ul><li>Differential relay… Transformers </li></ul></ul><ul><ul><li>Auxiliary relays.. Under frequency, Under voltage, O/V, Master Trip, …etc. </li></ul></ul>
  28. 29. Relay Panel <ul><li>Relays: </li></ul><ul><ul><li>Electro magnetic Attraction type </li></ul></ul><ul><ul><li>Induction type </li></ul></ul><ul><ul><li>Static type </li></ul></ul><ul><ul><li>Thermal type </li></ul></ul><ul><ul><li>Numerical type </li></ul></ul>
  29. 32. Metering Panel <ul><li>ABT Metering of Inter-state and Intra-state lines. </li></ul><ul><li>Data……weekly mail for billing </li></ul>
  30. 33. PLCC Panel <ul><li>PLCC connects---Co-axial cable-- Yard LMU </li></ul><ul><li>PLCC panel for: </li></ul><ul><ul><li>PLCC Speech </li></ul></ul><ul><ul><li>Protection Coupler </li></ul></ul>
  31. 34. RTU Panel <ul><li>RTU data flow to SLDC Gotri. </li></ul><ul><li>Connection to PLCC panel </li></ul><ul><li>DATA…. Parameters, position of brkr, isolator…etc. </li></ul>
  32. 35. Batteries Large lead acid batteries for substations
  33. 36. Battery Set <ul><li>Battery is considered as the heart of sub-station. </li></ul><ul><li>Sub-station battery sets: </li></ul><ul><ul><li>220 V DC </li></ul></ul><ul><ul><ul><li>Single or double </li></ul></ul></ul><ul><ul><li>110 V DC </li></ul></ul><ul><ul><ul><li>Single or double </li></ul></ul></ul><ul><ul><li>48 V DC </li></ul></ul><ul><ul><ul><li>Single or double </li></ul></ul></ul>
  34. 37. Battery specifications <ul><li>Generally .. Telecom DC source .. 48 V dc. </li></ul><ul><li>PLCC.. 1 extra cell to compensate cable drop. </li></ul><ul><li>50 V - 200 AH means Battery set is having 25 nos.of 2-Volts cells that can deliver… </li></ul><ul><li>10 Amps for 20 Hrs. 10 A × 20 H = 200 AH OR </li></ul><ul><li>20 Amps for 10 Hrs 20A × 10 H= 200 AH considering 100 % efficiency. </li></ul>
  35. 38. Battery structure <ul><li>Hard rubber container </li></ul><ul><li>Positive terminal post.. Lead peroxide </li></ul><ul><li>Negative terminal post.. Sponge Lead </li></ul><ul><li>Vent plug </li></ul><ul><li>Float level indicator </li></ul><ul><li>Inter-cell connector strips </li></ul><ul><li>Electrolyte…H 2 SO 4 </li></ul>
  36. 39. Chemical Reaction <ul><li>Pb + PbO 2 + H 2 SO 4 </li></ul><ul><li>Discharge Charge </li></ul><ul><li>2 PbSO 4 + 2 H 2 O </li></ul>
  37. 40. Battery Charger Float charger Boost charger Main Parts
  38. 41. Functions of Float charger <ul><li>Converts 3-Ph AC into 48 V DC. (Rectifier) </li></ul><ul><li>Normally it delivers load & give trickle charging to Battery bank. </li></ul><ul><li>Works on ‘Auto’ or ‘Manual’ mode. </li></ul><ul><li>In ‘Auto’ mode, o/p DC voltage is controlled by ECU card to predefine value irrespective of amplitude of AC voltage. </li></ul><ul><li>In ‘Manual’ mode, o/p DC voltage is to be controlled manually by external control. </li></ul>
  39. 42. Functions of Boost charger <ul><li>Converts 3-Ph AC into 48 V DC.(Rectifier) </li></ul><ul><li>Normally ,it is made OFF. </li></ul><ul><li>Works on ‘CC’ or ‘CV’ mode. </li></ul><ul><li>In ‘CC’ mode, battery can be charged at constant current. </li></ul><ul><li>In ‘CV’ mode, battery can be charged at constant voltage. </li></ul>
  40. 43. <ul><li>Boost charging is required only if whole battery bank is drained considerably. At that time ,Float charger will deliver the load. </li></ul><ul><li>Boost charger is made on when Float charger is out of order. In this case, Boost section will charge battery bank and battery bank output from tap-cell will deliver load. </li></ul>Need for Boost charger
  41. 44. L.T.Panel Board <ul><li>3-Phase and 1-Phase dist. Board </li></ul><ul><li>For supply of s/y lighting, water pump, charger supply, aviation lighting, colony lighting, ….etc </li></ul>
  42. 45. Emulsifier, Hydrant and Helon Fire protection system
  43. 46. T h a n k Y o u A l l ..

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