SlideShare a Scribd company logo
1 of 16
Generation of high AC voltages and
impulse voltages
Contents
•Introduction
•Cascade transformer
•Marx circuit
•Generation of switching surges
•Conclusion and Reference
Introduction
• When test voltage requirements are less than
about 300 kV,a single transformer can be used.
• Each transformer unit consists of low,high and
meter winding.
• Series connection of the several units of
transformers used to produce very high
voltage.
2Prepared By S ARUN M.Tech Generation of high AC Voltage
CASCADE TRANSFORMERS
• First transformer is at ground potential along with
its tank. The 2nd transformer is kept on insulators
and maintained at a potential of V2.
• The high voltage winding of the 1st unit is
connected to the tank of the 2nd unit, the low
voltage winging of this unit is supplied from the
excitation winding of the 1st transformer, which is
in series with the high voltage winding of the 1st
transformer at its high voltage end.
3Prepared By S ARUN M.Tech Generation of high AC Voltage
• The rating of the excitation winding is same as
that of low voltage winding.3rd
transformer is
kept on insulator above the ground at a
potential of 2V2.output of 3 stage is 3V2.
• The rating of the low voltage winding of 230
or 400 Vcan be used to produce 3.3 kV,6.6 kV
or 11 kV.
4Prepared By S ARUN M.Tech Generation of high AC Voltage
CASCADE TRANSFORMER
5Prepared By S ARUN M.Tech Generation of high AC Voltage
Cascade transformer with isolating transformer for
excitation
6Prepared By S ARUN M.Tech Generation of high AC Voltage
• High frequency high voltage damped oscillations are needed
which need high voltage high frequency transformer which is
a Tesla coil.
• Tesla coil is a doubly tuned resonant circuit, primary voltage
rating is 10 kV and secondary voltage rated from 500 to 1000
kV.
7Prepared By S ARUN M.Tech Generation of high AC Voltage
• The primary is fed from DC or AC supply through C1.A
spark gap G connected across the primary is triggered at V1
which induces a high self excitation in the secondary. The
windings are tuned to a frequency of 10 to 100 kHz.
STANDARD IMPULSE WAVESHAPE
• It is specified by rise or front time,fall or tail time to 50% peak
value and peak value.
• 1.2/50 μ s,1000 kV.
8Prepared By S ARUN M.Tech Generation of high AC Voltage
MARX CIRCUIT
• Charging resistance Rs is liming the charging
current from 50 to 100mA. CRs is about 10s to
1 min.
• The gap spacing G is grater than the charging
voltage V.All the capacitance s are charged to
the voltage V in 1 min.
• The spark gap G is made spark over, then all
the capacitor C get connected in series and
discharge into the load.
9Prepared By S ARUN M.Tech Generation of high AC Voltage
• In modified Marx circuit,R1is divided into n
parts equal to R1/n and put in series with the
gap G, R2is divided into n parts equal to R2/n
and connected across each capacitor unit after
the gap G.
• The nominal output is the number of stages
multiplied by the charging voltage.
10Prepared By S ARUN M.Tech Generation of high AC Voltage
MULTISTAGE IMPULSE GENERATOR
MARX CIRCUIT
• A single capacitor C1 is to be charged first and then
discharged into wave shaping circuits and it is limited to
200 kV
• For producing very high voltages a bank of capacitors
are charged in parallel and then discharged in series.
11Prepared By S ARUN M.Tech Generation of high AC Voltage
MULTI STAGE IMPULSE GENERATORS
Modified Marx Circuit
12Prepared By S ARUN M.Tech Generation of high AC Voltage
COMPONENTS OF A MULTISTAGE
IMPULSE GENERATOR
• DC Charging set
• Charging resistors
• Generator capacitors and spark gaps
• Wave shaping resistors and capacitors
• Triggering system
• Voltage dividers
13Prepared By S ARUN M.Tech Generation of high AC Voltage
GENERATION OF SWITCHING SURGES
• A switching surge is a short duration transient
voltage produced in the system due to a sudden
opening or closing of a switch or c.b or due to
an arcing at a fault in the system.
• Impulse generator circuit is modified to give
longer duration waveshape,100/1000 μs,R1 is
increased to very high value and it is parallel to
R2 in the discharge circuit.
14Prepared By S ARUN M.Tech Generation of high AC Voltage
• Power transformer excited by DC voltages giving
oscillatory waves which produces unidirectional
damped oscillations. Frequency of 1to 10 kHz
• Switching surges of very high peaks and long
duration can be obtained by one circuit, In this
circuit C1 charged to a low voltage d.c(20 to 25
kV) is discharged into the low voltage winding of
a power transformer. The high voltage winding is
connected in parallel to a load capacitance
C2,potential divider R2,gap S and test object.
15Prepared By S ARUN M.Tech Generation of high AC Voltage
• Conclusion
From these conclude that how to generate
high alternating voltages in power system
engineering.
• Reference
“High voltage engineering ” by M S Naidu and
V Kamaraju, Tata McGraw Hill Education, 5th
edition.
16Prepared By S ARUN M.Tech Generation of high AC Voltage

More Related Content

What's hot

HIGH VOL TAGE TESTING OF TRANSFORMER BY HARI SHANKAR SINGH
HIGH VOL TAGE TESTING OF TRANSFORMER BY HARI SHANKAR SINGHHIGH VOL TAGE TESTING OF TRANSFORMER BY HARI SHANKAR SINGH
HIGH VOL TAGE TESTING OF TRANSFORMER BY HARI SHANKAR SINGHShankar Singh
 
1.1 Generation of alternating voltage, phasor representation of sinusoidal qu...
1.1 Generation of alternating voltage, phasor representation of sinusoidal qu...1.1 Generation of alternating voltage, phasor representation of sinusoidal qu...
1.1 Generation of alternating voltage, phasor representation of sinusoidal qu...KrishnaKorankar
 
ELECTRICAL MEASUREMENT & MEASURING INSTRUMENTS [Emmi- (NEE-302) -unit-1]
ELECTRICAL MEASUREMENT & MEASURING INSTRUMENTS [Emmi- (NEE-302) -unit-1]ELECTRICAL MEASUREMENT & MEASURING INSTRUMENTS [Emmi- (NEE-302) -unit-1]
ELECTRICAL MEASUREMENT & MEASURING INSTRUMENTS [Emmi- (NEE-302) -unit-1]Md Irshad Ahmad
 
Impulse testing of transformer
Impulse testing of transformerImpulse testing of transformer
Impulse testing of transformerPreet_patel
 
Components of Transmission Lines
Components of Transmission LinesComponents of Transmission Lines
Components of Transmission LinesElectrical Slides
 
Flexible AC Transmission (FACTS)
Flexible AC Transmission (FACTS)Flexible AC Transmission (FACTS)
Flexible AC Transmission (FACTS)SHIMI S L
 
Synchronous generators
Synchronous generatorsSynchronous generators
Synchronous generatorstes4
 
Transient in Power system
Transient in Power systemTransient in Power system
Transient in Power systemPreet_patel
 
Chapter 3 Generation of high voltages and current
Chapter 3 Generation of high voltages and currentChapter 3 Generation of high voltages and current
Chapter 3 Generation of high voltages and currentmukund mukund.m
 
measurement of high voltage and high currents
 measurement of high voltage and high currents  measurement of high voltage and high currents
measurement of high voltage and high currents mukund mukund.m
 
Automatic power factor correction
Automatic power factor correctionAutomatic power factor correction
Automatic power factor correctionVIKAS KUMAR MANJHI
 
FLYBACK CONVERTER PPT
FLYBACK CONVERTER PPTFLYBACK CONVERTER PPT
FLYBACK CONVERTER PPTAjmal Khan
 
Unit 03 Protective relays
Unit  03 Protective relaysUnit  03 Protective relays
Unit 03 Protective relaysPremanandDesai
 
Resistance potential divider
Resistance potential dividerResistance potential divider
Resistance potential divider120101eer001
 
Single Phase Induction Motor Speed Control
Single Phase Induction Motor Speed ControlSingle Phase Induction Motor Speed Control
Single Phase Induction Motor Speed ControlEdgefxkits & Solutions
 
Synchronous generator
Synchronous generatorSynchronous generator
Synchronous generatorPrasant Kumar
 

What's hot (20)

HIGH VOL TAGE TESTING OF TRANSFORMER BY HARI SHANKAR SINGH
HIGH VOL TAGE TESTING OF TRANSFORMER BY HARI SHANKAR SINGHHIGH VOL TAGE TESTING OF TRANSFORMER BY HARI SHANKAR SINGH
HIGH VOL TAGE TESTING OF TRANSFORMER BY HARI SHANKAR SINGH
 
Chapter 06 - Generation of High Direct Current Voltages
Chapter 06 - Generation of High Direct Current VoltagesChapter 06 - Generation of High Direct Current Voltages
Chapter 06 - Generation of High Direct Current Voltages
 
1.1 Generation of alternating voltage, phasor representation of sinusoidal qu...
1.1 Generation of alternating voltage, phasor representation of sinusoidal qu...1.1 Generation of alternating voltage, phasor representation of sinusoidal qu...
1.1 Generation of alternating voltage, phasor representation of sinusoidal qu...
 
ELECTRICAL MEASUREMENT & MEASURING INSTRUMENTS [Emmi- (NEE-302) -unit-1]
ELECTRICAL MEASUREMENT & MEASURING INSTRUMENTS [Emmi- (NEE-302) -unit-1]ELECTRICAL MEASUREMENT & MEASURING INSTRUMENTS [Emmi- (NEE-302) -unit-1]
ELECTRICAL MEASUREMENT & MEASURING INSTRUMENTS [Emmi- (NEE-302) -unit-1]
 
Impulse testing of transformer
Impulse testing of transformerImpulse testing of transformer
Impulse testing of transformer
 
Components of Transmission Lines
Components of Transmission LinesComponents of Transmission Lines
Components of Transmission Lines
 
Facts devices
Facts devicesFacts devices
Facts devices
 
Flexible AC Transmission (FACTS)
Flexible AC Transmission (FACTS)Flexible AC Transmission (FACTS)
Flexible AC Transmission (FACTS)
 
Synchronous generators
Synchronous generatorsSynchronous generators
Synchronous generators
 
Transient in Power system
Transient in Power systemTransient in Power system
Transient in Power system
 
Chapter 3 Generation of high voltages and current
Chapter 3 Generation of high voltages and currentChapter 3 Generation of high voltages and current
Chapter 3 Generation of high voltages and current
 
measurement of high voltage and high currents
 measurement of high voltage and high currents  measurement of high voltage and high currents
measurement of high voltage and high currents
 
Facts controller
Facts controllerFacts controller
Facts controller
 
Automatic power factor correction
Automatic power factor correctionAutomatic power factor correction
Automatic power factor correction
 
FLYBACK CONVERTER PPT
FLYBACK CONVERTER PPTFLYBACK CONVERTER PPT
FLYBACK CONVERTER PPT
 
Unit 03 Protective relays
Unit  03 Protective relaysUnit  03 Protective relays
Unit 03 Protective relays
 
Resistance potential divider
Resistance potential dividerResistance potential divider
Resistance potential divider
 
Single Phase Induction Motor Speed Control
Single Phase Induction Motor Speed ControlSingle Phase Induction Motor Speed Control
Single Phase Induction Motor Speed Control
 
Dc voltage
Dc voltageDc voltage
Dc voltage
 
Synchronous generator
Synchronous generatorSynchronous generator
Synchronous generator
 

Similar to Ac impulse voltage

HVE UNIT III GENERATION OF HIGH VOLTAGES AND HIGH CURRENTS.pptx
HVE UNIT III  GENERATION OF HIGH VOLTAGES AND HIGH CURRENTS.pptxHVE UNIT III  GENERATION OF HIGH VOLTAGES AND HIGH CURRENTS.pptx
HVE UNIT III GENERATION OF HIGH VOLTAGES AND HIGH CURRENTS.pptxMuthuKumar158260
 
GENERATING OF HIGH ALTERNATING VOLTAGE
GENERATING OF HIGH ALTERNATING VOLTAGEGENERATING OF HIGH ALTERNATING VOLTAGE
GENERATING OF HIGH ALTERNATING VOLTAGEJamil Abdullah
 
High Voltage Engineering Presentation_Basics
High Voltage Engineering Presentation_BasicsHigh Voltage Engineering Presentation_Basics
High Voltage Engineering Presentation_BasicsMsRAMYAHYACINTHL
 
Module 2 ee369 KTU syllabus-high voltage ac generation,resonant circuits
Module 2 ee369 KTU syllabus-high voltage ac generation,resonant circuitsModule 2 ee369 KTU syllabus-high voltage ac generation,resonant circuits
Module 2 ee369 KTU syllabus-high voltage ac generation,resonant circuitsAsha Anu Kurian
 
GENERATION OF HVDC 17.8.16 (2).ppt
GENERATION OF HVDC  17.8.16 (2).pptGENERATION OF HVDC  17.8.16 (2).ppt
GENERATION OF HVDC 17.8.16 (2).pptssuser4b87fd
 
high voltage engineering module1(EE369)-KTU
high voltage engineering module1(EE369)-KTUhigh voltage engineering module1(EE369)-KTU
high voltage engineering module1(EE369)-KTUAsha Anu Kurian
 
High Voltage Engineering- OVER VOLTAGES IN ELECTRICAL POWER SYSTEMS
High Voltage Engineering- OVER VOLTAGES IN ELECTRICAL POWER SYSTEMSHigh Voltage Engineering- OVER VOLTAGES IN ELECTRICAL POWER SYSTEMS
High Voltage Engineering- OVER VOLTAGES IN ELECTRICAL POWER SYSTEMSsandhya757531
 
Generation of High D.C. Voltage (HVDC generation)
Generation of High D.C. Voltage (HVDC generation)Generation of High D.C. Voltage (HVDC generation)
Generation of High D.C. Voltage (HVDC generation)RP6997
 
protection against overvoltages in power system
protection against overvoltages in power systemprotection against overvoltages in power system
protection against overvoltages in power systemMDALAMIN1802140
 
Lightning impulse test in precise
Lightning impulse test in  preciseLightning impulse test in  precise
Lightning impulse test in preciseMuthar Hussain
 

Similar to Ac impulse voltage (20)

HVE UNIT III GENERATION OF HIGH VOLTAGES AND HIGH CURRENTS.pptx
HVE UNIT III  GENERATION OF HIGH VOLTAGES AND HIGH CURRENTS.pptxHVE UNIT III  GENERATION OF HIGH VOLTAGES AND HIGH CURRENTS.pptx
HVE UNIT III GENERATION OF HIGH VOLTAGES AND HIGH CURRENTS.pptx
 
GENERATING OF HIGH ALTERNATING VOLTAGE
GENERATING OF HIGH ALTERNATING VOLTAGEGENERATING OF HIGH ALTERNATING VOLTAGE
GENERATING OF HIGH ALTERNATING VOLTAGE
 
High Voltage Engineering Presentation_Basics
High Voltage Engineering Presentation_BasicsHigh Voltage Engineering Presentation_Basics
High Voltage Engineering Presentation_Basics
 
Deltatron or Engetron
Deltatron or EngetronDeltatron or Engetron
Deltatron or Engetron
 
Module 2 ee369 KTU syllabus-high voltage ac generation,resonant circuits
Module 2 ee369 KTU syllabus-high voltage ac generation,resonant circuitsModule 2 ee369 KTU syllabus-high voltage ac generation,resonant circuits
Module 2 ee369 KTU syllabus-high voltage ac generation,resonant circuits
 
MARX Generator.pptx
MARX Generator.pptxMARX Generator.pptx
MARX Generator.pptx
 
GENERATION OF HVDC 17.8.16 (2).ppt
GENERATION OF HVDC  17.8.16 (2).pptGENERATION OF HVDC  17.8.16 (2).ppt
GENERATION OF HVDC 17.8.16 (2).ppt
 
high voltage engineering module1(EE369)-KTU
high voltage engineering module1(EE369)-KTUhigh voltage engineering module1(EE369)-KTU
high voltage engineering module1(EE369)-KTU
 
High Voltage Engineering- OVER VOLTAGES IN ELECTRICAL POWER SYSTEMS
High Voltage Engineering- OVER VOLTAGES IN ELECTRICAL POWER SYSTEMSHigh Voltage Engineering- OVER VOLTAGES IN ELECTRICAL POWER SYSTEMS
High Voltage Engineering- OVER VOLTAGES IN ELECTRICAL POWER SYSTEMS
 
lightning.ppt
lightning.pptlightning.ppt
lightning.ppt
 
Inverter
InverterInverter
Inverter
 
Generation of High D.C. Voltage (HVDC generation)
Generation of High D.C. Voltage (HVDC generation)Generation of High D.C. Voltage (HVDC generation)
Generation of High D.C. Voltage (HVDC generation)
 
GENERATORS
GENERATORS GENERATORS
GENERATORS
 
Ac voltage
Ac voltageAc voltage
Ac voltage
 
Ac voltage
Ac voltageAc voltage
Ac voltage
 
protection against overvoltages in power system
protection against overvoltages in power systemprotection against overvoltages in power system
protection against overvoltages in power system
 
HVE.ppt
HVE.pptHVE.ppt
HVE.ppt
 
Lightning impulse test in precise
Lightning impulse test in  preciseLightning impulse test in  precise
Lightning impulse test in precise
 
33kv substation
33kv substation33kv substation
33kv substation
 
A
AA
A
 

More from sarunkutti

More from sarunkutti (16)

Multi stage amp
Multi stage ampMulti stage amp
Multi stage amp
 
Differential amplifier
Differential amplifierDifferential amplifier
Differential amplifier
 
Oscillator
OscillatorOscillator
Oscillator
 
Fb amplifier (2)
Fb amplifier (2)Fb amplifier (2)
Fb amplifier (2)
 
Load line analysis
Load line analysisLoad line analysis
Load line analysis
 
Biasing
BiasingBiasing
Biasing
 
Mosfet
MosfetMosfet
Mosfet
 
Bjt
BjtBjt
Bjt
 
Lcd
LcdLcd
Lcd
 
Clipper and clamper
Clipper and clamperClipper and clamper
Clipper and clamper
 
Insulator
InsulatorInsulator
Insulator
 
Insulation coordination
Insulation coordinationInsulation coordination
Insulation coordination
 
Circuit breaker
Circuit breakerCircuit breaker
Circuit breaker
 
Impulse voltage
Impulse voltageImpulse voltage
Impulse voltage
 
Impulse current
Impulse currentImpulse current
Impulse current
 
Triggatron gap
Triggatron gapTriggatron gap
Triggatron gap
 

Recently uploaded

TEST CASE GENERATION GENERATION BLOCK BOX APPROACH
TEST CASE GENERATION GENERATION BLOCK BOX APPROACHTEST CASE GENERATION GENERATION BLOCK BOX APPROACH
TEST CASE GENERATION GENERATION BLOCK BOX APPROACHSneha Padhiar
 
Theory of Machine Notes / Lecture Material .pdf
Theory of Machine Notes / Lecture Material .pdfTheory of Machine Notes / Lecture Material .pdf
Theory of Machine Notes / Lecture Material .pdfShreyas Pandit
 
Prach: A Feature-Rich Platform Empowering the Autism Community
Prach: A Feature-Rich Platform Empowering the Autism CommunityPrach: A Feature-Rich Platform Empowering the Autism Community
Prach: A Feature-Rich Platform Empowering the Autism Communityprachaibot
 
Computer Graphics Introduction, Open GL, Line and Circle drawing algorithm
Computer Graphics Introduction, Open GL, Line and Circle drawing algorithmComputer Graphics Introduction, Open GL, Line and Circle drawing algorithm
Computer Graphics Introduction, Open GL, Line and Circle drawing algorithmDeepika Walanjkar
 
Curve setting (Basic Mine Surveying)_MI10412MI.pptx
Curve setting (Basic Mine Surveying)_MI10412MI.pptxCurve setting (Basic Mine Surveying)_MI10412MI.pptx
Curve setting (Basic Mine Surveying)_MI10412MI.pptxRomil Mishra
 
Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...
Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...
Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...Erbil Polytechnic University
 
Secure Key Crypto - Tech Paper JET Tech Labs
Secure Key Crypto - Tech Paper JET Tech LabsSecure Key Crypto - Tech Paper JET Tech Labs
Secure Key Crypto - Tech Paper JET Tech Labsamber724300
 
2022 AWS DNA Hackathon 장애 대응 솔루션 jarvis.
2022 AWS DNA Hackathon 장애 대응 솔루션 jarvis.2022 AWS DNA Hackathon 장애 대응 솔루션 jarvis.
2022 AWS DNA Hackathon 장애 대응 솔루션 jarvis.elesangwon
 
Immutable Image-Based Operating Systems - EW2024.pdf
Immutable Image-Based Operating Systems - EW2024.pdfImmutable Image-Based Operating Systems - EW2024.pdf
Immutable Image-Based Operating Systems - EW2024.pdfDrew Moseley
 
Comprehensive energy systems.pdf Comprehensive energy systems.pdf
Comprehensive energy systems.pdf Comprehensive energy systems.pdfComprehensive energy systems.pdf Comprehensive energy systems.pdf
Comprehensive energy systems.pdf Comprehensive energy systems.pdfalene1
 
STATE TRANSITION DIAGRAM in psoc subject
STATE TRANSITION DIAGRAM in psoc subjectSTATE TRANSITION DIAGRAM in psoc subject
STATE TRANSITION DIAGRAM in psoc subjectGayathriM270621
 
A brief look at visionOS - How to develop app on Apple's Vision Pro
A brief look at visionOS - How to develop app on Apple's Vision ProA brief look at visionOS - How to develop app on Apple's Vision Pro
A brief look at visionOS - How to develop app on Apple's Vision ProRay Yuan Liu
 
FUNCTIONAL AND NON FUNCTIONAL REQUIREMENT
FUNCTIONAL AND NON FUNCTIONAL REQUIREMENTFUNCTIONAL AND NON FUNCTIONAL REQUIREMENT
FUNCTIONAL AND NON FUNCTIONAL REQUIREMENTSneha Padhiar
 
『澳洲文凭』买麦考瑞大学毕业证书成绩单办理澳洲Macquarie文凭学位证书
『澳洲文凭』买麦考瑞大学毕业证书成绩单办理澳洲Macquarie文凭学位证书『澳洲文凭』买麦考瑞大学毕业证书成绩单办理澳洲Macquarie文凭学位证书
『澳洲文凭』买麦考瑞大学毕业证书成绩单办理澳洲Macquarie文凭学位证书rnrncn29
 
Module-1-(Building Acoustics) Noise Control (Unit-3). pdf
Module-1-(Building Acoustics) Noise Control (Unit-3). pdfModule-1-(Building Acoustics) Noise Control (Unit-3). pdf
Module-1-(Building Acoustics) Noise Control (Unit-3). pdfManish Kumar
 
CME 397 - SURFACE ENGINEERING - UNIT 1 FULL NOTES
CME 397 - SURFACE ENGINEERING - UNIT 1 FULL NOTESCME 397 - SURFACE ENGINEERING - UNIT 1 FULL NOTES
CME 397 - SURFACE ENGINEERING - UNIT 1 FULL NOTESkarthi keyan
 
Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...
Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...
Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...Sumanth A
 
Javier_Fernandez_CARS_workshop_presentation.pptx
Javier_Fernandez_CARS_workshop_presentation.pptxJavier_Fernandez_CARS_workshop_presentation.pptx
Javier_Fernandez_CARS_workshop_presentation.pptxJavier Fernández Muñoz
 
Python Programming for basic beginners.pptx
Python Programming for basic beginners.pptxPython Programming for basic beginners.pptx
Python Programming for basic beginners.pptxmohitesoham12
 
DEVICE DRIVERS AND INTERRUPTS SERVICE MECHANISM.pdf
DEVICE DRIVERS AND INTERRUPTS  SERVICE MECHANISM.pdfDEVICE DRIVERS AND INTERRUPTS  SERVICE MECHANISM.pdf
DEVICE DRIVERS AND INTERRUPTS SERVICE MECHANISM.pdfAkritiPradhan2
 

Recently uploaded (20)

TEST CASE GENERATION GENERATION BLOCK BOX APPROACH
TEST CASE GENERATION GENERATION BLOCK BOX APPROACHTEST CASE GENERATION GENERATION BLOCK BOX APPROACH
TEST CASE GENERATION GENERATION BLOCK BOX APPROACH
 
Theory of Machine Notes / Lecture Material .pdf
Theory of Machine Notes / Lecture Material .pdfTheory of Machine Notes / Lecture Material .pdf
Theory of Machine Notes / Lecture Material .pdf
 
Prach: A Feature-Rich Platform Empowering the Autism Community
Prach: A Feature-Rich Platform Empowering the Autism CommunityPrach: A Feature-Rich Platform Empowering the Autism Community
Prach: A Feature-Rich Platform Empowering the Autism Community
 
Computer Graphics Introduction, Open GL, Line and Circle drawing algorithm
Computer Graphics Introduction, Open GL, Line and Circle drawing algorithmComputer Graphics Introduction, Open GL, Line and Circle drawing algorithm
Computer Graphics Introduction, Open GL, Line and Circle drawing algorithm
 
Curve setting (Basic Mine Surveying)_MI10412MI.pptx
Curve setting (Basic Mine Surveying)_MI10412MI.pptxCurve setting (Basic Mine Surveying)_MI10412MI.pptx
Curve setting (Basic Mine Surveying)_MI10412MI.pptx
 
Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...
Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...
Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...
 
Secure Key Crypto - Tech Paper JET Tech Labs
Secure Key Crypto - Tech Paper JET Tech LabsSecure Key Crypto - Tech Paper JET Tech Labs
Secure Key Crypto - Tech Paper JET Tech Labs
 
2022 AWS DNA Hackathon 장애 대응 솔루션 jarvis.
2022 AWS DNA Hackathon 장애 대응 솔루션 jarvis.2022 AWS DNA Hackathon 장애 대응 솔루션 jarvis.
2022 AWS DNA Hackathon 장애 대응 솔루션 jarvis.
 
Immutable Image-Based Operating Systems - EW2024.pdf
Immutable Image-Based Operating Systems - EW2024.pdfImmutable Image-Based Operating Systems - EW2024.pdf
Immutable Image-Based Operating Systems - EW2024.pdf
 
Comprehensive energy systems.pdf Comprehensive energy systems.pdf
Comprehensive energy systems.pdf Comprehensive energy systems.pdfComprehensive energy systems.pdf Comprehensive energy systems.pdf
Comprehensive energy systems.pdf Comprehensive energy systems.pdf
 
STATE TRANSITION DIAGRAM in psoc subject
STATE TRANSITION DIAGRAM in psoc subjectSTATE TRANSITION DIAGRAM in psoc subject
STATE TRANSITION DIAGRAM in psoc subject
 
A brief look at visionOS - How to develop app on Apple's Vision Pro
A brief look at visionOS - How to develop app on Apple's Vision ProA brief look at visionOS - How to develop app on Apple's Vision Pro
A brief look at visionOS - How to develop app on Apple's Vision Pro
 
FUNCTIONAL AND NON FUNCTIONAL REQUIREMENT
FUNCTIONAL AND NON FUNCTIONAL REQUIREMENTFUNCTIONAL AND NON FUNCTIONAL REQUIREMENT
FUNCTIONAL AND NON FUNCTIONAL REQUIREMENT
 
『澳洲文凭』买麦考瑞大学毕业证书成绩单办理澳洲Macquarie文凭学位证书
『澳洲文凭』买麦考瑞大学毕业证书成绩单办理澳洲Macquarie文凭学位证书『澳洲文凭』买麦考瑞大学毕业证书成绩单办理澳洲Macquarie文凭学位证书
『澳洲文凭』买麦考瑞大学毕业证书成绩单办理澳洲Macquarie文凭学位证书
 
Module-1-(Building Acoustics) Noise Control (Unit-3). pdf
Module-1-(Building Acoustics) Noise Control (Unit-3). pdfModule-1-(Building Acoustics) Noise Control (Unit-3). pdf
Module-1-(Building Acoustics) Noise Control (Unit-3). pdf
 
CME 397 - SURFACE ENGINEERING - UNIT 1 FULL NOTES
CME 397 - SURFACE ENGINEERING - UNIT 1 FULL NOTESCME 397 - SURFACE ENGINEERING - UNIT 1 FULL NOTES
CME 397 - SURFACE ENGINEERING - UNIT 1 FULL NOTES
 
Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...
Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...
Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...
 
Javier_Fernandez_CARS_workshop_presentation.pptx
Javier_Fernandez_CARS_workshop_presentation.pptxJavier_Fernandez_CARS_workshop_presentation.pptx
Javier_Fernandez_CARS_workshop_presentation.pptx
 
Python Programming for basic beginners.pptx
Python Programming for basic beginners.pptxPython Programming for basic beginners.pptx
Python Programming for basic beginners.pptx
 
DEVICE DRIVERS AND INTERRUPTS SERVICE MECHANISM.pdf
DEVICE DRIVERS AND INTERRUPTS  SERVICE MECHANISM.pdfDEVICE DRIVERS AND INTERRUPTS  SERVICE MECHANISM.pdf
DEVICE DRIVERS AND INTERRUPTS SERVICE MECHANISM.pdf
 

Ac impulse voltage

  • 1. Generation of high AC voltages and impulse voltages Contents •Introduction •Cascade transformer •Marx circuit •Generation of switching surges •Conclusion and Reference
  • 2. Introduction • When test voltage requirements are less than about 300 kV,a single transformer can be used. • Each transformer unit consists of low,high and meter winding. • Series connection of the several units of transformers used to produce very high voltage. 2Prepared By S ARUN M.Tech Generation of high AC Voltage
  • 3. CASCADE TRANSFORMERS • First transformer is at ground potential along with its tank. The 2nd transformer is kept on insulators and maintained at a potential of V2. • The high voltage winding of the 1st unit is connected to the tank of the 2nd unit, the low voltage winging of this unit is supplied from the excitation winding of the 1st transformer, which is in series with the high voltage winding of the 1st transformer at its high voltage end. 3Prepared By S ARUN M.Tech Generation of high AC Voltage
  • 4. • The rating of the excitation winding is same as that of low voltage winding.3rd transformer is kept on insulator above the ground at a potential of 2V2.output of 3 stage is 3V2. • The rating of the low voltage winding of 230 or 400 Vcan be used to produce 3.3 kV,6.6 kV or 11 kV. 4Prepared By S ARUN M.Tech Generation of high AC Voltage
  • 5. CASCADE TRANSFORMER 5Prepared By S ARUN M.Tech Generation of high AC Voltage
  • 6. Cascade transformer with isolating transformer for excitation 6Prepared By S ARUN M.Tech Generation of high AC Voltage
  • 7. • High frequency high voltage damped oscillations are needed which need high voltage high frequency transformer which is a Tesla coil. • Tesla coil is a doubly tuned resonant circuit, primary voltage rating is 10 kV and secondary voltage rated from 500 to 1000 kV. 7Prepared By S ARUN M.Tech Generation of high AC Voltage
  • 8. • The primary is fed from DC or AC supply through C1.A spark gap G connected across the primary is triggered at V1 which induces a high self excitation in the secondary. The windings are tuned to a frequency of 10 to 100 kHz. STANDARD IMPULSE WAVESHAPE • It is specified by rise or front time,fall or tail time to 50% peak value and peak value. • 1.2/50 μ s,1000 kV. 8Prepared By S ARUN M.Tech Generation of high AC Voltage
  • 9. MARX CIRCUIT • Charging resistance Rs is liming the charging current from 50 to 100mA. CRs is about 10s to 1 min. • The gap spacing G is grater than the charging voltage V.All the capacitance s are charged to the voltage V in 1 min. • The spark gap G is made spark over, then all the capacitor C get connected in series and discharge into the load. 9Prepared By S ARUN M.Tech Generation of high AC Voltage
  • 10. • In modified Marx circuit,R1is divided into n parts equal to R1/n and put in series with the gap G, R2is divided into n parts equal to R2/n and connected across each capacitor unit after the gap G. • The nominal output is the number of stages multiplied by the charging voltage. 10Prepared By S ARUN M.Tech Generation of high AC Voltage
  • 11. MULTISTAGE IMPULSE GENERATOR MARX CIRCUIT • A single capacitor C1 is to be charged first and then discharged into wave shaping circuits and it is limited to 200 kV • For producing very high voltages a bank of capacitors are charged in parallel and then discharged in series. 11Prepared By S ARUN M.Tech Generation of high AC Voltage
  • 12. MULTI STAGE IMPULSE GENERATORS Modified Marx Circuit 12Prepared By S ARUN M.Tech Generation of high AC Voltage
  • 13. COMPONENTS OF A MULTISTAGE IMPULSE GENERATOR • DC Charging set • Charging resistors • Generator capacitors and spark gaps • Wave shaping resistors and capacitors • Triggering system • Voltage dividers 13Prepared By S ARUN M.Tech Generation of high AC Voltage
  • 14. GENERATION OF SWITCHING SURGES • A switching surge is a short duration transient voltage produced in the system due to a sudden opening or closing of a switch or c.b or due to an arcing at a fault in the system. • Impulse generator circuit is modified to give longer duration waveshape,100/1000 μs,R1 is increased to very high value and it is parallel to R2 in the discharge circuit. 14Prepared By S ARUN M.Tech Generation of high AC Voltage
  • 15. • Power transformer excited by DC voltages giving oscillatory waves which produces unidirectional damped oscillations. Frequency of 1to 10 kHz • Switching surges of very high peaks and long duration can be obtained by one circuit, In this circuit C1 charged to a low voltage d.c(20 to 25 kV) is discharged into the low voltage winding of a power transformer. The high voltage winding is connected in parallel to a load capacitance C2,potential divider R2,gap S and test object. 15Prepared By S ARUN M.Tech Generation of high AC Voltage
  • 16. • Conclusion From these conclude that how to generate high alternating voltages in power system engineering. • Reference “High voltage engineering ” by M S Naidu and V Kamaraju, Tata McGraw Hill Education, 5th edition. 16Prepared By S ARUN M.Tech Generation of high AC Voltage