The document discusses transmission lines and HVDC transmission. It defines a transmission line as consisting of parallel conductors used to connect a source to a load. Transmission lines have electrical parameters like resistance, inductance, capacitance and conductance that remain constant along their length. Common types of transmission lines include parallel wires, twisted pair wires, ribbon cables, coaxial cables, microstrip lines, and waveguides. HVDC transmission is used for long distance power transmission as it has advantages over HVAC transmission like improved power transfer capability and better voltage control. The document discusses some HVDC projects in India and provides basic principles of HVDC transmission.
Applications of power electronics in HVDCKabilesh K
Role of Power electronics in HVDC and Transmission system. What are the components of Power electronics used in HVDC. Types of HVDC Links. Advantages of HVDC over HVAC.
Extra high voltage long ac transmission linesShivagee Raj
From economical point of view designing of transmission line system is very important in the electricity supply system. Extra High Voltage Transmission Lines are best suited for transmission of bulk power.
Thyristor Controlled Series Capacitor with Automatic Controlijiert bestjournal
An increasingly competitive market where economic a nd environmental pressures limit their scope to expand transmission facilities.The optimiz ation of transmission corridors for power transfer has become a great importance. In this sce nario,the FACTS technology is an attractive option for increasing system operation flexibility [1],New developments in high-current,high- power electronics are making it possible to control electronically the power flows on the high voltage side of the network during both steady stat e and transient operation. In this paper a series controller from the Flexible AC Transmission System (FACTS) family called as �Thyristor Controlled Series Capacitor� (TCSC) is designed using PIC microcontroller. Thyristor controlled series compensator (TCSC),is the first generation of FACTS controller,can govern line impedance through introduction of a thy ristor controlled capacitor in series with the transmission line. A grid of transmission lines ope rating at high voltages is required to transmit power from generating stations to load. In addition to transmission lines that carry power from source to load,modern power systems are highly int erconnected for economic reasons.
Applications of power electronics in HVDCKabilesh K
Role of Power electronics in HVDC and Transmission system. What are the components of Power electronics used in HVDC. Types of HVDC Links. Advantages of HVDC over HVAC.
Extra high voltage long ac transmission linesShivagee Raj
From economical point of view designing of transmission line system is very important in the electricity supply system. Extra High Voltage Transmission Lines are best suited for transmission of bulk power.
Thyristor Controlled Series Capacitor with Automatic Controlijiert bestjournal
An increasingly competitive market where economic a nd environmental pressures limit their scope to expand transmission facilities.The optimiz ation of transmission corridors for power transfer has become a great importance. In this sce nario,the FACTS technology is an attractive option for increasing system operation flexibility [1],New developments in high-current,high- power electronics are making it possible to control electronically the power flows on the high voltage side of the network during both steady stat e and transient operation. In this paper a series controller from the Flexible AC Transmission System (FACTS) family called as �Thyristor Controlled Series Capacitor� (TCSC) is designed using PIC microcontroller. Thyristor controlled series compensator (TCSC),is the first generation of FACTS controller,can govern line impedance through introduction of a thy ristor controlled capacitor in series with the transmission line. A grid of transmission lines ope rating at high voltages is required to transmit power from generating stations to load. In addition to transmission lines that carry power from source to load,modern power systems are highly int erconnected for economic reasons.
Report Writing: Basic- The Structure and Components
Report Writing: Basic- The Structure and Components
Report Writing: Basic- The Structure and Components
Lecture-3 : More Applications of Power Electronicsrsamurti
This is the third lecture on Power Electronics. This describes some more applications of Power Electronics to help the student understand the importance of Power Electronics in present and future technology.
The Solar System[c] is the gravitationally bound system of the Sun and the objects that orbit it. The largest of such objects are the eight planets, in order from the Sun: four terrestrial planets named Mercury, Venus, Earth and Mars, two gas giants named Jupiter and Saturn, and two ice giants named Uranus and Neptune. The terrestrial planets have a definite surface and are mostly made of rock and metal. The gas giants are mostly made of hydrogen and helium, while the ice giants are mostly made of 'volatile' substances such as water, ammonia, and methane. In some texts, these terrestrial and giant planets are called the inner Solar System and outer Solar System planets respectively.
Simulation of different power transmission systems and their capacity of redu...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Alternating current (AC) is the main driving force in the industries and residential areas, but for the long transmission line (more than 650 KM) AC transmission is more expensive than that of direct current (DC). Technically, AC transmission line control is more complicated because of the frequency. DC transmission does not have these limitations, which has led to build long HVDC transmission lines over the last 40 years. HVDC technology made possible to transfer bulk power over long distances.
HVDC Transmission System Today's Upgrading TechnologyDixit Patel
High Voltage Direct Current Transmission line is highly use in today's generation for long power transmission system because it has many great advantages over HVAC Transmission system. It's requires low transmission line space and more space we can use around transmission line over HVAC transmission line.
3D FLOW ANALYSIS OF HEAT TRANSFER IN A SCRAPED SURFACE HEAT EXCHANGER (SSHE) ijiert bestjournal
In this case study I tried to understand various stages of power transmission from Chandrapur generating power plant to Padaghe receiving station including need of HVDC line in place of EHVAC in Chandrapur- Padaghe line,its commissioning,erection,financing,various problems faced by MSEB engineers during commissioning of line and during operations. This case study also cont ains few critical issues and faults on line and frequently occurring fault also. During this case study I have suggested some corrective actions to MSEB engineers of Padaghe station to improve reliability of pla nt and prevent frequently occurred fault in plant and on line.
Exploring Career Paths in Cybersecurity for Technical CommunicatorsBen Woelk, CISSP, CPTC
Brief overview of career options in cybersecurity for technical communicators. Includes discussion of my career path, certification options, NICE and NIST resources.
NIDM (National Institute Of Digital Marketing) Bangalore Is One Of The Leading & best Digital Marketing Institute In Bangalore, India And We Have Brand Value For The Quality Of Education Which We Provide.
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2. Transmission Line
Def. – A transmission line basically consists of 2 or more
parallel conductors used to connect a source to a load.
What is a transmission line?
•Uniform transmission line is one which has its electrical
parameters remaining constant along its length of the line.
•In which voltage to current ratio does not vary with distance
if the line is terminated in its characteristics impedance.
•Electrical parameters of lines are R-L-C-G (Resistance-
Inductance-Capacitance-Conductance).
•These parameters are defined per unit length of the conductor
and are called Primary constants of the line.
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3. Uses of Transmission lines:-
•To transfer the energy or signal from the
transmitter to the receiver.
•It acts as communication media.
•In most cases, transmission lines are metallic
conductors.
•Few e.g. of Transmission lines are:-
Parallel wires
Twisted pair wires
Ribbon type
Co-axial cables
Micro-strip lines
Wave guides
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4. REASONS FOR AC GENERATION AND TRANSMISSION
Due to ease of transformation of voltage levels and rough collector
cage motors, ALTERNATING CURRENT is universally utilised.
Both for GENERATION and LOADS and hence for
TRANSMISSION.
Generators are at distant places, away from the populated areas i.e.
the load centers
They are either PIT HEAD THERMAL or HYDEL
Turbines drive synchronous generators giving an output at 15-25
kV.
To reach the loads at homes/industry at required safe levels,
transformers step down voltage.
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5. COMPARISION OF HVAC & HVDC SYSTEMS
– CONVENTIONALLY POWER TRANSMISSION IS EFFECTED THROUGH HVAC
SYSTEMS ALL OVER THE WORLD.
– HVAC TRANSMISSION IS HAVING SEVER LIMITATIONS LIKE LINE LENGTH ,
UNCONTROLLED POWER FLOW, OVER/LOW VOLTAGES DURING LIGHTLY /
OVER LOADED CONDITIONS,STABILITY PROBLEMS,FAULT ISOLATION ETC
– CONSIDERING THE DISADVANTAGES OF HVAC SYSTEM AND THE ADVANTAGES
OF HVDC TRANSMISSION , POWERGRID HAS CHOOSEN HVDC TRANSMISSION
FOR TRANSFERRING 2000 MW .
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8. COST: AC vs DC Transmission
Line Cost AC
Line Cost DC
Terminal Cost DC
Terminal Cost AC
Break Even Distance
9. HVDC IN INDIA
Back-to-Back
HVDC LINK CONNECTING CAPACITY
REGION (MW)
Vindyachal North – West 2 x 250
Chandrapur West – South 2 x 500
Vizag – I East – South 500
Sasaram East – North 500
Vizag – II East – South 500
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16. USE OF DC
Direct current is put to use in common life for driving
our portable devices, UPSs, battery systems and vastly
in railway.
DC AS A MEANS OF TRANSMISSION
This has been possible with beginning of
High power/ high current capability thyristor.
&
Fast acting computerized controls
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17. If DC is required to be used for transmission
&
since our primary source of power is A.C,
The following are three basic steps:-
1. Convert AC into DC (rectifier)
2. Transmit DC
3. Convert DC into AC ( inverter)
Amity University Rajasthan