Power Electronics Applications in Power Systems : [Introduction Video]
Summary
TLDRThis course explores the complexities of electrical power systems, focusing on power generation, transmission, and distribution. It emphasizes the critical role of reactive power compensators in maintaining network stability and efficiency. The course covers the basics of electrical power, the necessity of reactive power compensation, and the integration of power electronics devices for fast operation. It also delves into mathematical modeling of transmission systems and the practical application of compensators like SVC and SBC in enhancing power system performance, stability, and voltage regulation.
Takeaways
- 🌐 The electrical power grid is a complex system, especially in populous countries like India, China, and the USA, where it spans vast geographical areas.
- 🔌 The primary goal of the electrical power grid is to generate, transmit, and distribute power efficiently and reliably to customers.
- 🔄 Power generators in the grid operate in synchronism, requiring a network that is both weak and complex to manage.
- 🛠️ Compensators, specifically reactive power compensators, are essential devices in the power grid that help maintain efficient operation by absorbing, generating, or applying reactive power as needed.
- ⚡ Reactive power is a key concept in electrical power systems, and understanding it is crucial for the course.
- 📈 The course covers the basics of electrical power, including active and reactive power, and the importance of reactive power compensation.
- 🔄 Power Electronics devices are necessary for fast operation in reactive power compensators, highlighting the integration of power electronics in the grid.
- 📚 The course builds upon previous knowledge of basic electrical power systems and power electronic devices.
- 🔍 Mathematical modeling of electrical power transmission systems is crucial for understanding their operation and is a significant part of the course.
- 💡 The course explores the application of Static VAR Compensators (SVC) in practical power networks to achieve goals like power loss minimization and power transmission capacity enhancement.
- 🔋 The course also discusses the role of different types of Power Electronics compensators, including shunt and series compensators, in improving power system stability and performance.
Q & A
What is the main complexity of electrical power systems?
-Electrical power systems are complex due to their extensive geographical coverage, the need for synchronization among hundreds of generators, and the integration of thousands of kilometers of transmission lines.
What is the primary goal of developing electrical power grids?
-The primary goal of developing electrical power grids is to generate, transmit, and distribute power to customers reliably, stably, and uninterruptedly.
What is the role of compensators in an electrical power system?
-Compensators, specifically reactive power compensators, play a crucial role in maintaining the efficient operation of the network by absorbing, generating, or applying reactive power where and when it is required.
Why is reactive power important in electrical power systems?
-Reactive power is important because it supports the transmission of active power without which the power system would not function efficiently. It helps in maintaining voltage levels and improving the overall power factor.
What are the types of reactive power compensators discussed in the course?
-The course discusses two main types of reactive power compensators: Static VAR Compensators (SVC) and Static Synchronous Compensators (STATCOM).
What is the significance of Power Electronics devices in reactive power compensation?
-Power Electronics devices are significant in reactive power compensation because they enable fast operation, which is necessary for efficient reactive power compensators that require fast switching capabilities.
What are the prerequisites for understanding the course content?
-The prerequisites for understanding the course content include a basic understanding of electrical power systems and electrical power electronic systems.
How does the course approach the teaching of mathematical modeling of electrical power transmission networks?
-The course starts with basic concepts and gradually derives relevant equations from scratch, discussing important concepts and numerical problems related to the mathematical modeling of electrical power transmission networks.
What are the benefits of using SVC in practical power networks?
-Using SVC in practical power networks can lead to minimization of power loss or energy loss, enhancement of power transmission capacity, improvement of power system stability, and increased damping of the power system.
What is the purpose of midpoint compensation in a transmission line?
-Midpoint compensation aims to mitigate voltage-related issues such as overvoltage and undervoltage at the midpoint of a transmission line using Power Electronics devices, thus maintaining voltage regulation according to power grid norms.
How does the course structure its modules?
-The course is structured into modules that start with basic electrical power concepts, move on to mathematical modeling of electrical power transmission networks, discuss the application of reactive power compensators, and finally cover series compensation devices.
Outlines
🔌 Introduction to Power Electronics in Power Systems
The script introduces a course on Power Electronics applications in Power Systems. It emphasizes the complexity of electrical power systems, particularly the power grid in populous countries like India, China, and the USA. The grid's vast geographical span and the operation of hundreds of generators in synchronism over thousands of kilometers of transmission lines make it a weak and complex network. The course's goal is to explore how power is generated, transmitted, and distributed efficiently, with a focus on the role of devices like compensators in maintaining the network's stability. The instructor outlines the course's content, which includes understanding reactive power, the need for reactive power compensation, and the types of compensators used in different parts of a power network. The course also covers the importance of power electronics devices for fast operation in compensators. The prerequisite for the course is a basic understanding of electrical power systems and power electronic systems.
📡 Mathematical Modeling of Electrical Transmission Systems
The second paragraph delves into the necessity of electrical transmission systems, which connect geographically dispersed generators to bring power to consumers. The instructor plans to discuss the mathematical modeling of these systems in detail, starting from basic concepts and deriving relevant equations. The focus will be on the impact of reactive power compensators on the power system, including midpoint compensation to address voltage-related issues like overvoltage and undervoltage. The paragraph also introduces the types of power electronic compensators, such as Static VAR Compensators (SVCs), and their mathematical modeling. The course aims to cover the practical application of SVCs in power networks to achieve goals like minimizing energy loss, enhancing transmission capacity, and improving power system stability. The instructor promises a detailed discussion on different types of stability issues and how SVCs can improve them.
🔄 Exploring Series and Parallel Power Electronic Compensators
The final paragraph discusses the course's progression from static VAR compensators (SVCs) to series-type power electronic compensators, starting with Thyristor-Controlled Series Capacitor (TCSC). The instructor will cover the modeling approaches and applications of these compensators, explaining how they enhance power system performance. The discussion will include the differences between SVCs and STATCOMs (Static Synchronous Compensators) and their respective roles in improving power transmission network performance, including stability, reliability, and voltage regulation. The course will also touch on SSSC (Static Synchronous Series Compensator), discussing its modeling and application in improving various aspects of power systems. The instructor emphasizes the importance of understanding the basics of electrical power systems and power electronic systems as prerequisites for the course, which is typically taught at the postgraduate level but can also be an elective for undergraduate students. The teaching style will be detailed, ensuring that learners can follow the concepts from basic to advanced levels.
Mindmap
Keywords
💡Electrical Power System
💡Generators
💡Transmission Lines
💡Compensators
💡Reactive Power
💡Power Electronics
💡Static VAR Compensator (SVC)
💡Thyristor Controlled Series Capacitor (TCSC)
💡Static Synchronous Compensator (STATCOM)
💡Series Compensation
💡Power System Stability
Highlights
Electrical power systems are one of the most complex systems created by humans.
The power grid in populous countries like India, China, and the USA is extensive and complex.
Hundreds of generators operate in synchronism across thousands of kilometers.
The electrical power grid's goal is to generate, transmit, and distribute power efficiently.
Reliable, stable, and uninterrupted power supply to customers is a key objective.
Power grids require thorough analysis to ensure reliability, stability, and resilience.
Compensators are devices that assist generators for efficient network operation.
Reactive power compensators absorb, generate, or apply reactive power as needed.
Understanding reactive power is crucial for the course.
The course covers the basics of electrical power, active and reactive power concepts.
Reactive power compensation is necessary for efficient power system operation.
Reactive power compensators are found in high voltage, medium voltage, and low voltage networks.
Fast operation of compensators is enabled by power electronic devices.
The course bridges the gap between basic electrical power systems and power electronic devices.
Mathematical modeling of electrical power transmission systems is essential for understanding their operation.
The course discusses the effect of reactive power compensators on power systems.
Midpoint compensation can mitigate voltage-related issues in transmission lines.
Two types of power electronic compensators are discussed: shunt and series.
Static VAR compensators (SVC) are a type of shunt compensator.
SVCs can minimize power loss, enhance transmission capacity, and improve stability.
The course covers the application of SVC in practical power networks.
Series compensators like Thyristor-Controlled Series Capacitor (TCSC) are discussed.
Static Synchronous Compensators (STATCOM) differ from SVC and are discussed in detail.
The course concludes with Static Synchronous Series Compensator (SSSC) discussions.
The course is suitable for postgraduates and can be an elective for undergraduates.
The teaching style involves detailed derivation of equations and concepts.
Transcripts
[Music]
welcome uh to the course Power
Electronics applications in Power
Systems
electrical power system is one of the
most complex uh systems which is created
and developed by human
being so this Electrical uh power grid
uh uh in in in India and other populous
country like China and USA is a very
widely uh uh long geography ically
located and complex so where hundreds of
generators operate in
synchronism uh and these generators are
connected with uh several thousands
kilometers long transmission
lines all right so it means it's a very
weak and complex power
Network okay and the goal of this
electrical development of electrical
power grid is to generate power transmit
power and distribute power to the
customers so in order
to have the efficient process there
needs to have uh many many uh devices
involv in
it and the goal of a power GD is of
course uh to to supply a reliable stable
uninterrupted power to the
customers so therefore electrical power
system needs a thorough
analysis uh to to make it uh more
reliable stable and also
resilient uh from various
events so in in
general as I said an electrical power
grid consist of several uh hundreds of
power generators operate in
synchronism uh there needs to have
certain devices which could assist these
generators to have the efficient
operation of the network and these
devices are usually called
compensators a compensator is usually a
reactive power compensator which can
absorb or generate or apply the reactive
power to the network
wherever this is this are required and
whenever this are required okay now to
understand this one needs to have a fair
idea about what is reactive power okay
so this course will start with the very
basic idea of electrical
power most importantly uh the concepts
of electrical active and reactive power
then uh I'll discuss the need of this
reactive power
compensation
okay now uh there are various types of
reactive power compensators exist in
different uh parts of a power Network
either in the high voltage Network or
even uh medium voltage and low voltage
networks okay so efficient reactive
power
compensators usually need fast operation
and that is only possible when we have
fast uh switching devices and here is we
have uh the requirement of Power
Electronics devices so this course acts
as a leaso of the two previously taught
uh electrical engineering courses one is
the basic electrical power system
another is the basic electrical power
Electronics devices okay and conver
inverter so the prerequisite for this
course is uh the basic idea of
electrical part system as well as the
basic idea of electrical power
electronic systems all
right now this this course I will start
with very basic idea of uh electrical
power most importantly this
differentiation of uh active power to
reactive power and the requirement of
reactive power compensation in the first
module then we'll slowly move ahead to
the idea of the modeling of electrical
transmission systems as I said why we
require electrical transmission systems
we require electrical transmission
system in order to connect the
electrical generators which are located
in a wide geographical area Okay uh and
to establish the link
of uh this this these generators and
most importantly to bring power towards
the customers where the customers live
we need this electrical power
transmission systems or power
transmission networks so in order to
understand this operation of power
transmission networks one needs to have
a thorough mathematical modeling okay so
I will discuss the very basic idea of
the mathematical modeling of electrical
power transmission networks in the
second module of this course okay I'll
start from the very basic idea I'll
slowly derive the all the relevant
equations uh from the scratch from the
very basic idea and discuss uh and and
also I'll discuss the important uh
concept associated with
it then uh we'll also discuss some of
the numerical
problems then I will slowly go ahead
towards the our main topics which is uh
the effect of reactive power compensator
to the power system okay so we'll
discuss some idea of midpoint
compensation midpoint means in a typical
transmission line we'll consider the
voltage condition at the midpoint and
we'll try to uh mitigate all the voltage
Rel related uh issues for example over
voltage under voltage Etc at the mid
point this is possible by using these
Power Electronics devices okay and there
are two types of Power Electronics based
compensator one is called cich
compensator and another is called sound
compensator and also there might be a
combination of cies and S
compensators so to discuss these
compensators I will start with the sun
uh part types of power electronic
compensators which is popularly Nam as
SVC that is static hard compensator okay
so in this module I'll briefly discuss
different types of svcs that is static V
compensators I'll also discuss the
mathematical modeling of this sbcs and
I'll also discuss the differences among
the different types of sbcs with
relative merits and demerits once I
completed this I'll start discussion on
the applic of this SVC in Practical
powered networks in order to achieve
several goals now what are the our goals
we'll achieve uh this power uh loss or
energy loss minimization with the
switchable control of these Power
Electronics devices those things we'll
discuss then we can also achieve or we
can also enhance the power transmission
capacity of a power transmission line
with a appropriate placement of SVC so
how it is possible we'll discuss then
we'll also see how an SVC can improve
the power system stability okay so there
are different types of stability uh
problems we'll discuss how a power
system can enhance the stability margin
and thereby it also improves the steady
St stability as well as it improves the
small signal stability ility then also
we'll discuss how an SPC can improve the
damping of the power system now why we
need damping what is damping those
things I will also discuss in uh detail
okay so once I completed this discussion
on SVC and its application in power
system I'll also discuss the different
types of modeling and control approaches
of SBC primarily to control the uh
voltage or to regulate the voltages uh
at the point in which a SBC is placed
okay so we'll typically consider that
SBC is placed at a midpoint of a
transmission line and then we'll discuss
that how it impacts uh in mitigating
over voltage under voltage or voltage
related issues and thereby it keeps the
voltage regulation uh of a power
transmission line according to the Norms
of a particular power grid okay so this
will finish the sun type of uh par
Electronics
compensator uh this is one class then
we'll move forward to the series type of
par electronic compensators so we'll
start with uh tcsc thy control series
capacitor okay after completion of this
uh in this particular module basically
I'll discuss the modeling approach of
this CSC as well as its application to
power system how it impacts on a power
system operation and how can it enhance
the performance of a power system those
things I'll discuss in very
detail and then uh we'll move forward to
a different kind of par Electronics
device uh that is called uh statcom
static synchronous compensators it
operation uh is uh different than the it
its counterpart of SVC that is static
part compensator so how a statcom is
different to SBC those things I'll
discuss and most importantly how can a
stat comp uh be used in order to enhance
of a power transmission network uh
performance for example uh to enhance
the stability of a power transmission
system to enhance to to improve the
reliability of a transmission system to
uh regulate the voltages all these
things I will discuss in very detail
then finally the in the last module I'll
discuss uh a different kind of series
compensation devices uh that is called
sssc okay that is static static
synchronous C
compensator okay so uh this again I will
discuss the modeling of sssc I'll
discuss the application of sssc in
improving various performance indicator
or various aspects of power system those
things I will discuss in very detail
okay so this is all about this different
modules of the course okay and as I uh
said the prerequisite of this course is
the a very good idea on basics of
electrical power system and some basic
idea of electrical power electronic
system okay so this course is usually
taught in
a uh postgraduate level but this course
can be an elective course of
undergraduate uh students as well okay
so even I I'll discuss all these
different types of relevant topics uh
from the very basic idea but one should
have a fair idea about how electrical
power system works
okay now regarding this uh my teaching
style I'll I'll I'll derive uh on both
uh all these relevant equations all this
uh uh conceptual details and all this
modeling details in very detailed manner
okay so if one follow me from the very
beginning I will I'm sure that you can
he or she can understand at the end and
uh this this concept very well okay so
this course is you is is a is a
conceptual course and one needs to
develop the concept uh and and in order
to develop the concept that uh one needs
to have uh the idea what I taught in a
previous day uh because all these uh
concepts are interconnected all these
Concepts need some uh initial IDE idea
those things I'll start from lecture by
lecture and I hope this course would be
enjoyable to all the Learners thank you
[Music]
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