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Transcript of King Abdul Aziz University College of Engineering Electrical and Computer Department EE 454...
![Page 1: King Abdul Aziz University College of Engineering Electrical and Computer Department EE 454 SWITCHG.& PROT. OF PWR. SYS. Lectures Book Dr. ABDULRAHMAN.](https://reader037.fdocuments.net/reader037/viewer/2022110321/56649ceb5503460f949b7024/html5/thumbnails/1.jpg)
King Abdul Aziz University King Abdul Aziz University College of Engineering College of Engineering
Electrical and Computer DepartmentElectrical and Computer Department
EE 454EE 454SWITCHG.& PROT. OF PWR. SYSSWITCHG.& PROT. OF PWR. SYS . .
Lectures BookLectures Book
Dr. ABDULRAHMAN ALMASOUDDr. ABDULRAHMAN ALMASOUD
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Function Of Industrial Switchgear
Foreword
Purpose And Types
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Switchgear & ProtectionSwitchgear & ProtectionLecture 2
System and substation layout:
System layoutSystem layout::
I- I- radial feeder feeder..
II- parallel feeder.
III- ring system.
Iv- combination of the past three kinds.
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Substation layoutSubstation layoutSubstation layoutSubstation layout::
Substations usually different in size, construction, cost and complexity according to voltage, location and function.
The common feature they have is marshalling of all the associated circuits, through CB, switches on to bus bar as shown Fig (1-2-2A).
(From Protection Relaying by Blackburn Page 338)1-Single bus –single breaker Fig (10.1)2-Double bus – with bus tie single breaker Fig (10.2)3-Main & transfer bus – single breaker Fig (10.3)4-Double bus – single breaker Fig (10.4)5-Double bus – Double breaker Fig (10.5)6-Ring bus Fig (10.6)7-Breaker and a half bus Fig (10.7)8-Bus and transformer single breaker Fig (10.8)
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Function of Substation
Introduction:
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Functions of Substation
Voltage Transformer – function 1
Circuit Switching – function 2
Voltage Regulation – function 3
VAR Control – function 4
System Protection – function 5
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Design Considerations
Safety
Simplicity
Reliability
Maintenance
Flexibility
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Radial Systems
Introduction
Simple Radial Systems
Expanded Radial Systems
Single-Ended Unit Substations
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Radial SystemsSimple And Expanded Radial Systems
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Radial SystemsSingle-Ended Unit Substations
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Loop Systems
Primary Loop Systems
Secondary Loop Systems
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Loop SystemsPrimary Loop Systems
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Selective Systems-:
Primary selective system
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Secondary Selective System-: