EE587_Ch2_sp10

EE587_Ch2_sp10 - EE 587 – Electric Power...

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Unformatted text preview: EE 587 – Electric Power Distribution/Utilization Dr. M. Safiuddin, Research Professor Department of Electrical Engineering University at Buffalo [ State University of New York ] EE 587_Sp10 1 EE 587 Electric Power Distribution/Utilization TEXT BOOK: ANSI/IEEE -Std. 141-1993 [ The Red Book]; Published by Institute of Electrical & Electronics Engineers, New York. Lecture Topics: 1. 2. 3. Introduction, System Planning & Design Course orientation, Overview, Definitions, Planning guide for the supply and distribution system [Ch 2] Voltage Considerations Voltage control, Voltage selection, Effects of voltage variations on low and medium voltage equipment, voltage quality considerations.[Ch. 3] System Protection I Sources of fault currents, Fundamentals of fault current calculations, Restraints of simplified calculations, Example case studies. [Ch. 4] EE 587_Sp10 2 1 EE 587 Electric Power Distribution/Utilization Lecture Topics (cont’d): 4. System Protection II Analysis of system behavior and protection needs, Protective devices and their applications, Protective relays, Breakers and fuses, Protection requirements for transformers, Feeders and motors.[ Ch. 5] Surge Protection I Nature of the problem, Traveling wave behavior, Insulation voltage withstand characteristics. Arrester characteristics and ratings, Arrester selection, Application concepts.[Ch. 6] Grounding Considerations Introduction, System grounding, Equipment grounding, Static and lightning protection grounding, Connection to earth, Ground resistance measurement. [Ch. 7] 5. 6. EE 587_Sp10 3 EE 587 Electric Power Distribution/Utilization Lecture Topics (cont’d): System Power Factor Power factor fundamentals, Typical plant power factors, Reactive compensation techniques.[ Ch. 8] 8. Mid-term exam 9. Power System Pollution Non-linear loads, Voltage and current harmonics, Passive and active filtering techniques.[ Ch. 9] 10. System Interfaces I Switchgear and other equipment, Transformers, Unit substations, Motor control Centers.[ Ch. 10] 7. EE 587_Sp10 4 2 EE 587 Electric Power Distribution/Utilization Lecture Topics (cont’d): 11. Energy Conservation & Management I Energy audits, case studies.[Ch.14] 12. System Interfaces II Industrial substations, Plant utility interface considerations.[Ch. 15] 13. Energy Conservation & Management II Elec. Energy issues, DC & AC machine efficiency & application considerations EE 587_Sp10 5 The IEEE Color Books ! ! " # $ % " EE 587_Sp10 6 3 The IEEE Color Books !# &' " $% & )* , + -% &' & $% & / ) 1, 0. '" "3 # $2 " 4 / 4 ( . ( ) * 6, 5 2 & $% & 2& &3 4 7 )8 +, 7 EE 587_Sp10 NATIONAL AND INTERNATIONAL STANDARDS • USA ANSINIST ASTMEEIEPRIIEEEMil.NEMANFPAOSHAULAmerican National Standards Institute. National Institute of Standards & Technology American Society for Testing & Materials. Edison Electric Institute [ Trade Assn. of Private Utilities]. Electric Power Research Institute. Institute of Electrical & Electronics Engineers. Military – Department of Defense. National Electrical Manufacturers Association. National Fire Protection Association NEC Occupational Safety & Health Administration Underwriters Laboratories, Inc. [Safety Standards]. EE 587_Sp10 8 4 NATIONAL AND INTERNATIONAL STANDARDS • CANADA CSACanadian Standards Association. • • GERMANY VDEVerbandef Deutscher Elektrotechniker. INTERNATIONAL (Headquarters- Geneva, Switzerland). IECISOInternational Electrotechnical Commission International Standards Organization. EE 587_Sp10 9 Chapter 2. SYSTEM PLANNING Basic Design Considerations: • • • • • • • Safety Reliability Simplicity of Operation Voltage Regulation Serviceability Flexibility Cost Effectiveness EE 587_Sp10 10 5 Planning Guide for Distribution Design • Load Definition & Forecasting Survey, requirements & characteristics, average demand, peak load, maximum demand, demand factor, diversity factor, load factor, coincident demand, load classification, forecasting • System Configurations: Simple radial, expanded radial, primary selective, primary loop, secondary selective, secondary spot network, ring bus. • Distributed Generation EE 587_Sp10 11 Load Requirements and Characteristics The following items define the various requirements and characteristics of the loads and must be determined and defined in the planning process: a. Load development/ build-up schedule 1) Peak load requirements in kVA 2) Temporary/construction power requirements 3) Timing b. Load variations in kVA expected during low load (non-productive period), average loads and peak load conditions. EE 587_Sp10 12 6 Load Requirements and Characteristics # 9 ! 9 3 9 4 & ( '* ' ) () + , .* . -) ) , , ) + / ' ) 01 / - . )' ( ) ' 2. ' ) 0 ) 3 , EE 587_Sp10 13 Load Requirements and Characteristics Daily (kWh for 24 h)/24 h avg. kW = (peak kW during the 24 h) peak kW (kWh for 8670 h)/8670 h avg. kW = (peak kW during the 8670 h) peak kW EE 587_Sp10 14 Annual 7 Load Requirements and Characteristics ! "# EE 587_Sp10 15 Load Requirements and Characteristics g) Special or unusual loads such as 1) 2) 3) 4) 5) 6) 7) 8) Resistance welding Arc welding Induction melting Induction heating Heat treating SCR controlled ovens Variable speed drives (large press drives) Large power conversion devices EE 587_Sp10 16 8 Load Requirements and Characteristics h) Harmonic- generating loads 1) 2) 3) 4) Converter/ inverter drives Arc discharge lighting Arc furnaces Other '( .) ' * 4 .5 4 + + 0 , / ) ( ( .) 0 0 . $ ,0 ) EE 587_Sp10 17 Utility Service • Information furnished by the user: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Physical plant layout Plant load – max. KW and KVA Preferred point of delivery Preferred service voltage Preferred utility supply arrangement Construction and start-up schedule Unusual requirements [e.g. high speed reclosing] Starting duty of large motors Anticipated power factor Nature of loads to be connected EE 587_Sp10 18 9 Utility Service • 1. 2. 3. 4. 5. 6. 7. Information furnished by the utility: Supply voltage Anticipated voltage spread Point of delivery and line route Billing rates or rates available Options on interface equipment Space requirements for substation(s), if any Space required for the transformer for secondary voltages EE 587_Sp10 19 Utility Service ( ; 8< : "8 : 2: & 2: 2 2: % 2: # 7 7 ( > $ ? ( #( $ $ ( $ = : EE 587_Sp10 20 10 EE 587_Sp10 21 EE 587_Sp10 22 11 EE 587_Sp10 23 EE 587_Sp10 24 12 EE 587_Sp10 25 EE 587_Sp10 26 13 EE 587_Sp10 27 EE 587_Sp10 28 14 EE 587_Sp10 29 15 ...
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This note was uploaded on 02/16/2011 for the course EE 587 taught by Professor Dr.mohammedsafiuddin during the Spring '11 term at SUNY Buffalo.

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