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EE4503 Electrical Systems Design

EE4503 Electrical Systems Design. Introduction. Topics. Understand the electrical systems design Know the standards used in this class Electrical Power Systems Production / Generation Transmission Distribution + Utilization. Electrical Systems Design. What we have to do?.

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EE4503 Electrical Systems Design

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  1. EE4503Electrical Systems Design Introduction

  2. Topics • Understand the electrical systems design • Know the standards used in this class • Electrical Power Systems • Production / Generation • Transmission • Distribution + Utilization

  3. Electrical Systems Design

  4. What we have to do? Design the electrical systems according to the standards • Know the standards • Apply the standards • Know theory behind the standards Rules, Regulations  Laws

  5. Where?

  6. What? • Electrical Power Systems • Delivery of the electrical power to the users • Protection of the electrical systems • Communication Systems • Delivery of the electrical signal

  7. What is Communication Systems? • Telephone Systems • Fire Alarm Systems • Master Antenna TV Systems • Security & Closed Circuit TV Systems • Sound Systems • Building Automation Systems

  8. What is Electrical Power Systems? • Power Distribution Systems • Lighting Systems • Standby Power Systems • Lightening Protection Systems • Vertical Transportation Systems (today might include horizontal as well)

  9. What do we have to do? • Design the electrical systems according to • Safety (including Standards, Rules, Regulations) • Customer need • Cooperate with others: mechanical and civil • Detail specifications of the systems • Cost estimation

  10. What are outcomes? • Single Line Diagrams • Riser Diagram • Load Schedule Tables • Plans • Lighting • Receptacles

  11. What are outcomes (details)? • Requirements • Specifications • Equipment • Installation Details • Wiring diagrams

  12. What is a Good Design? • Safety • Minimum Initial Investment • Maximum Electrical Efficiency (Minimum Operating Costs): e.g. power factor control, transformer loss, zoning lighting control • Minimum Maintenance Cost

  13. What is a Good Design? • Maximum Service Continuity: depend to the need, e.g. hospital, office, computer center • Maximum Flexibility and Expandability • Maximum Power Quality: think about turning on an air condition then computer hangs.

  14. Standards

  15. What are standards? Common agreement on some technical issues : • Standards for electrical equipment • Cable, Circuit breaker, Switch, etc. • Standards for installation • Safety distance between 12kV cable

  16. Is there a single standard? • National Standards: to server the need of each country • NEC, ANSI, BS, DN, VDE, JIS, TIS (มอก.) • International Standards • ISO, IEC, EN

  17. Standard Comparison (examples) • Frequency: 60 Hz • Voltage: 208/120V, 480/277V • Cable: AWG • Dimension: inch, feet • Weight: pound • Frequency: 50 Hz • Voltage: 380/220V, 400/230V • Cable: mm2 • Dimension: m • Weight: kg Electrical System Design, ประสิทธิ์ พิทยพัฒน์

  18. Electrical Symbols http://literature.rockwellautomation.com/idc/groups/literature/documents/wd/100-wd001_-en-p.pdf

  19. Electrical Symbols http://literature.rockwellautomation.com/idc/groups/literature/documents/wd/100-wd001_-en-p.pdf

  20. Electrical Symbols http://literature.rockwellautomation.com/idc/groups/literature/documents/wd/100-wd001_-en-p.pdf

  21. Electrical Power Systems

  22. Overview of Power Systems http://venturebeat.files.wordpress.com/2010/10/grid.jpg

  23. Electrical Power Plant (major) • Steam power plant: from lignite, oil, natural gas to nuclear • Combustion power plant: gas-turbine, diesel • Combined Cycle power plant: combined the above two

  24. Electrical Power Plant (minor) • Hydro power plant: Dam, pico-hydro • Solar cell • Wind turbine • ** Stream power plant: stirling engine

  25. Big Three by Thai Law • EGAT: Electrical Generating Authority of Thailand • Generation / Transmission • MEA: Metropolitan Electricity Authority • Transmission / Distribution / Utilization • PEA: Provincial Electricity Authority • Gen. / Trans. / Distribution / Utilization

  26. Generation • EGAT is the main electrical power generation (by law) • Private Power Producer (sell to EGAT) • Independent Power Producer (IPP) • Small Power Producer (SPP)

  27. Transmission • Long distance distribute of power • High voltage • High reliability (N-1, N-2, etc.) • Network of Transmission  Power Grid • High reliable, efficiency

  28. ASEAN Power Grid http://www2.egat.co.th/apg/images/APG_MAP.png

  29. Distribution • Low voltage • 220V 1 phase 2 wires • 380/220V 3 phase 4 wires • High voltage • 12kV (11kV), 24kV (22kV) • 69kV, 115kV

  30. Backbone Distribution • Simple Radial • Primary-Selective System • Secondary-Selective System • Loop-primary system • etc.

  31. Backbone DistributionSimple Radial Electrical Power Distribution Systems Operations, D.B.Campbell

  32. Backbone DistributionSecondary Selective Electrical Power Distribution Systems Operations, D.B.Campbell

  33. Backbone DistributionPrimary Selective Electrical Power Distribution Systems Operations, D.B.Campbell

  34. Distribution to End-user Depend on the area • Overhead cable • Underground cable from Overhead cable • Underground cable from Underground cable

  35. Reference • Electrical Systems Design, ประสิทธิ์ พิทยพัฒน์ • Electrical Power Distribution Systems Operations, D.B.Campbell

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