distributed power systems elct 908 instructor: prof. yasser g. hegazy email:...
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Distributed Power Systems
ELCT 908
Instructor: Prof. Yasser G. Hegazy
Email: [email protected]: C3, #319
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The Course
1. This course introduces IET students to an
important engineering topic that’s closely
related to their field in real life.
2. Students learn electric power engineering
concepts and develop technical expertise in
this specialized field.
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Power Systems
Power systems are responsible for generating
electrical power, transmitting this power and
then distributing it to customers at voltage
levels and reliability that are appropriate to
various users.
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System Layout
Generation
Transmission
Distribution
Customer Service
Different Technologies
Extra High Voltage
Medium and Low voltage
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Directions of Research
Power system analysis. Power system planning. Power system control. Power system protection. Power quality. Load management. Distributed generation.
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Structure Of The Course
Modeling of system Components
Three Phase andPer-unit systems
System Analysis and Control
System Protection
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Course Syllabus
Introduction. [1 lecture ]
Modeling of Power system components. [3 lectures]
The Per- unit system. [1 lecture ]
Power flow analysis and control. [2 lectures]
Short circuit analysis [2 lectures]
System protection [1 lecture ]
Distributed Generation. [1 lecture ]
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Marking Scheme
Quizzes (Best 2 of 3) 10
Tutorial Assignments 10
Reports 15
Mid Term Examination 25
Examination and Lab. Final 40
Total 100
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Schedule of Classes
Lectures: Tuesdays , 3rd slot in H10.
► Instructor office hours every Sunday from 11:00 to 1:00 p.m.
Tutorials : Tuesdays , 5th slot in H10 .
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References
1. “Electrical Energy Systems”, Mohamed El-
Hawary, CRC Press 2000, ISBN 0-8493-
2191-3.
2. “AC Power Systems Handbook”, Jerry
Whitaker, CRC Press 1999, ISBN 0-8493-
7414-6.
3. Journals and Conferences papers.
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Overview
What is a Power System?
What is the function of the system?
Power system includes all parts of an electric
system power sources and customers.
The Function of the system is to generate power , transmit this
power and to distribute it to customers at voltage levels and
reliability that are appropriate to various users.
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Thermal Power Station
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Gas Power Station
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Hydraulic Power Station
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System Components
What are the main component of a power system?
Generation plants
HV Substations
Transmission Lines
Bulk power Substations
Distribution system
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Single Line Diagram
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Voltage levels
Generation: 1kV-30 kV
EHV Transmission: 500kV-765kV
HV Transmission: 230kV-345kV
Subtransmission system: 69kV-169kV
Distribution system: 120V-35kV
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Overview
Power plants convert the energy stored in the fuel or
hydro into electric energy. The energy is supplied through step-up transformers to
the electric network. Power systems are comprised of 3 basic electrical
subsystems. Generation subsystem Transmission subsystem Distribution subsystem
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High Voltage Network
High-voltage networks, consist of transmission
lines, connects the power plants and high-
voltage substations in parallel. This network permits load sharing among power
plants The typical voltage of the network is between
240 and 700 kV. The high-voltage substations are located near
the load centers.
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Subtransmission Network
The subtransmission system connects the high-
voltage substations to the distribution substations. The typical voltage of the subtransmission
system is between 138 and 69 kV. In high load density areas, the subtransmission
system uses a network configuration that is
similar to the high voltage network.
In medium and low load density areas, the loop
or radial connection is used.
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Distribution Network
The distribution system has two parts, primary and
secondary. The primary distribution system consists of
overhead lines or underground cables, which are
called feeders. The feeders supply the distribution transformers that
step the voltage down to the secondary level. The secondary distribution system contains
overhead lines or underground cables supplying the
consumers directly by single- or three-phase power.
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One Line Diagram