24kV Distribution Transformer
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Transcript of 24kV Distribution Transformer
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24 kV Distribution Transformer Specification
Metropolitan Electricity AuthorityCopyright 2004 by MEA.
Thank you chairperson for an introduction.
Good morning ladies and gentlemen. Its a pleasure to be with you today.
My name is Sompong Sitthichaiyanan from Metropolitan Electricity Authority.
My work is related to underground system for ten years.
Let me share experience on System configuration and ring main unit in MEAs underground distribution system.
MEA's Power System Performance
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Overview
Background
Transformer Specification
Conclusion
Picture of MEAs Transformer Single Line Diagram General InformationCopyright 2004 by MEA.
I have divided my presentation into four parts.
First, introduction.
Second, system configuration.
Third, ring main unit.
Final, conclusion.
MEA's Power System Performance
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Background
Picture of MEAs Transformer
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Background
Single Line Diagram
24 kV
MEA Station
416/240V
Low Voltage Customer
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Background
General Information
Number of Purchase: 1,000 units / year
Service Area : 3,191.60 sq.km.Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Transformer Specification
Reference Standard
IEC 60076-1(2000) :Power Transformers Part 1 : General
Thailand Industrial StandardTIS 384 (1992) :
Standard for Power Transformer
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
-
Transformer Specification
Test Requirement
Type Test: Temperature Rise
: Lightning Impulse
: Short Circuit Test
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
-
Transformer Specification
Test Requirement
Routine Test: According to Standard (All unit)
: Temperature Rise (1 Unit)
: Lightning Impulse (1 Unit)
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
-
Transformer Specification
Ratings & Features
Type of Cooling : ONAN Rated Power : 45, 75, 112.5, 150,225, 300, 500 & 1,000 kVA
Phase : 1 or 3 phases Overhead, Outdoor & Mineral-Oil-Filled
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Transformer Specification
Ratings & Features
High voltage winding: 24 or 12/24 kV Low Voltage Winding : 416/240V Temperature Rise: Winding < 65 K
: Top Oil < 65 K
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Transformer Specification
Ratings & Features
Connection : Dyn 1 BIL : 125 kV (for 24 or 12/24 kV): 30 kV (for 416/240 kV)
Tap : -4 x 2.5 %Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
-
Transformer Specification
Ratings & Features
Impedance Voltage: up to 4.4% (45-225 kVA)
: more than 6.5% (300-1,000 kVA)
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Transformer Specification
General Requirement
Installation Type: Concrete Pole for 45-300 kVA
: Platform for 500-1,000 kVA
Provided with Lightning Arrester Bolted Type Transformer Tank CoverCopyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Transformer Specification
General Requirement
Maximum Weight: 1,250 kg for 45-150 kVA
: 1,650 kg for 225 kVA
: 1,800 kg for 300 kVA
: 4,500 kg for 500-1,000 kVA
Average Sound Level < 48-58 dBCopyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Transformer Specification
Tank & Cover
Constructed of Steel withAdequate Thickness
Steel cover and electrically bonded toTank.
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Transformer Specification
Core & Coil
Made of Grain Oriented, Low Loss,High Permeability, Silicon Steel Strip
Not Shift in Any Direction duringShipping & Installation
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Transformer Specification
Winding
Either Copper or Aluminum Foil Type Secondary Winding Withstand Thermal & MechanicalEffects by External Short Circuit
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Transformer Specification
Accessories
up to 300 500 and up
Tap Changeryes yes
Dual Switchyes yes
Thermometerno yes
Liquid Level Gageno yes
Lifting Facilitiesyes yes
Lightning Arresteryes yes
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
-
Transformer Specification
Accessories
up to 300 500 and up
Pressure Relief Deviceno yes
Circuit Breaker yes no
Supporting Lugyes no
Sampling Valveno yes
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Tap Changer
-4 x 2.5 % Rating Voltage
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
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Dual Voltage Switch
12 kV or 24 kV
Selection
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
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High Voltage Bushing
Bushing
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
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Low Voltage Bushing
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
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Bushing Cover
Bushing Cover
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Thermometer
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Liquid Level Gage
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Lifting Facilities
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Lightning Arrester
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Pressure Relief Device
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
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Circuit Breaker (CSP)
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Supporting Lug
Sampling Valve
Other
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Nameplate
Earthing Point
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Transformer Specification
Loss (Watt) - Single Phase
kVA No LoadLoad
50145 420
75200 540
100240 700
1673201,170
3335002,340
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Transformer Specification
Loss (Watt) - Three Phases
kVA No LoadLoad
45160 360
1503001,000
3004801,860
500 6703,030
1,0001,0006,400
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Conclusion
Copyright 2004 by MEA.
With public concern on power system reliability, quality and environment in urban areas.
It is necessary to convert distribution system from overhead to underground.
MEA's Power System Performance
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Question & Answer
Copyright 2004 by MEA.
Any question or comment?
MEA's Power System Performance