Download - EPR 512 Introduction
04/27/2023 1
EPR 512Power System
Analysis IIProf. Hossam TalaatEE– FUE- Fall 2015
04/27/2023 2
Domains of Operation
Normal Operation
Power Flow & Economic Dispatch
Power SystemPlanning
Abnormal Operation
Power System Faults
Power System Protection
Power System
Dynamics and Stability
Power System Study Areas
04/27/2023 3
50 millions people impacted . 60 GW lost More than $6 billions loss. Outages up to 36 hours. 2003 Blackout Simulation.flv
Why studying abnormal state and stability?Case Study: August 14, 2003 USA Blackout
04/27/2023 4
20 Hrs Before
Blackout
7 Hrs After Blackout
04/27/2023 5
Lines and Units Tripped
04/27/2023 6
Thursday 4th Sep. 2014, 6:00 am◦ Drop from 20 GW to 11 GW
◦ Final Report: Causes and RecommendationsIs not available !!!
Egypt’s Partial Blackout
04/27/2023 7
Suggestions for expansion planning study. Suggestions for protective relays’ settings Replacement of circuit breakers
Outcomes of stability studies
04/27/2023 8
Time Horizon of PS Dynamics
04/27/2023 9
It is the property of a PS that enables it to remain in a state of operating equilibrium under normal operating conditions and to regain an acceptable state of equilibrium after being subjected to a disturbance.
Rotor angle stability is the ability of interconnected synchronous machines to remain in synchronism (in step).
Loss of synchronism can occur between one machine and the rest of the system or between groups of machines.
Power System Stability Definitions
04/27/2023 10
The angle stability problem involves the electro-mechanical oscillations in power systems.Small Signal (Steady-state) stability: analysis of small and slow disturbances gradual power changes Transient stability: analysis of large and sudden disturbances faults, outage of a line, sudden application or removal of load
Power System Stability Definitions (cont.)
04/27/2023 11
Mechanical Analogy of Angle Stability
Mass= GeneratorRubber bands= Line
04/27/2023 12
Stability Classifications
EPM581- Protection& Switchgear Prof. Hossam Talaat
13
Course Syllabus
Fall 2015/2016Title: Power System Analysis IICode: EPR 512 Credits: 3
Lectures: 3 hrs/week Tutorials: 2 hrs/week Instructor: Prof. Dr. Hossam Eldin A. TalaatE-mail: [email protected]
EPM581- Protection& Switchgear Prof. Hossam Talaat
14
Textbooks
1- Hadi Saadat , “ Power System Analysis”, 2nd Edition, Mc Graw Hill, 2002.
2- Mohamed Zaki El-Sadek, “ Power Systems Voltage Stability and Power Quality”, 2002
EPM581- Protection& Switchgear Prof. Hossam Talaat
15
Course ContentsWk Topic # Text
Book1 Introduction to Power System Stability 12 Power System Model for Stability: swing
equation, Power-angle characteristics, Vector diagrams.
11.2:11.3
1
3 Small Signal Stability: Unregulated system, Regulated system
11.4 1
4 Transient Stability: Equal Area Criterion 11.5 15 Examples on Equal Area Criterion 11.6 16 Mid I Exam7 Numerical solution of swing equation 11.7 18 Transient Stability Enhancement Methods 19 Voltage stability: concept, 1.15 210 Two-Node Systems 2.1:2.11 211 VAr Compensation and Voltage Stability 2.12:2.1
82
12 Assessment Indices 5.1:5.4 213 FACTS Devices and Voltage Stability 7.1:7.4 2
04/27/2023 16
The Swing Equation
04/27/2023 17