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Brief Overview

ByDr. Eng. Mohamed EL-Shimy Mahmoud

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Publisher:

• LambertAcademic

Publisher /OmniscriptumGmbh & CompanyKg., 2015

The book consists oftwo volumes

• Volume 1:

• ISBN 978-3-659-

71372-9• No. of pages:

116

• Volume 2:

•

ISBN 978-3-659-80714-5

• No. of pages:648

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• Associate professor in the EPM department  –  Facultyof Engineering  –  Ain Shams University.

• Expert in the electromechanical electric energysystems and technical trainer.

• Teaches several undergraduate and graduate courses

• Published many research articleshttps://goo.gl/yqyAog

• Prepared and presented many international trainingcourses

• Please visit http://shimymb.tripod.com for someother info

Dr. Mohamed EL-Shimy Mahmoud

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• Main operational requirements of powergrids – Economic feasibility cost minimization

 –Ecological constraints

 – Power balance requirements

 – Operational constraints

 – Power quality constraints

 – N-k reliability

 – Adequacy (static security)

 – Dynamic security

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• Characterization of power sources

 – Variability

 – Intermittency

 – Predictability

 – Installed and available capacities

 – Dispatchability

 – … etc 

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• Feasible use of variable sources without storage – 

distributed vs. centralized sources

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• Generalized applications of variable sources

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• Power imbalance disturbances – Large changes in the loads

 – Forced outage of generators

 –Faults in the power grids• Generator disconnection

• Load disconnection

• Network insufficiency

• Islanding – Fuel insufficiency in non-variable generators

 – Inherently variable sources (e.g. wind and solar)

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• System security – operational states

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•The ability of the system towithstand credible contingencieswithout violating the normaloperating limits.

System security  –  definition

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Security studies

Static Security

Detects any potential

overload of a systembranch or an out of limitvoltage following a given

list of contingencies

Dynamic Security

Evaluate the system

dynamic behavior in termsof transient stability ordynamic voltage stability

when subjected toperturbations

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Main functions of

system securityand control centers 

System monitoring,

modeling & S.E 

Non-synchronized

Synchronized

Contingency analysis 

Off-line

On-line

Corrective actions 

Analysis:

Off-line

Analysis:

On-line

Implementation:

On-line

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Electromechanical equivalency and

dynamic order reduction for fast

dynamic security evaluation

Off-line methods 

Coherency and datasets

On-line methods 

On-line synchronized measurementsand advanced reduction techniques

considering new technologies

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• Construction of tools for fast and onlinedynamic security evaluation andenhancement

•

Modeling, simulation, and analysis ofpower systems for dynamic stabilityanalysis – Considering some emerging technologies

• Stability improvements and stabilizationcontrol of power grids

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This book is written for

High-level students

and researchersworking in the fields ofpower system security

and stability.

Engineers involved in

the operation, control,and planning ofelectric power

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