hvdc

Topics: Electric power transmission, Electrical engineering, High-voltage direct current Pages: 37 (8954 words) Published: March 2, 2014
Seminar report on

HVDC TECHNOLOGY AND SHORT CIRCUIT
CONTRIBUTION OF HVDC LIGHT

By
Jijo Francis

DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING
FEDERAL INSTITUTE OF SCIENCE AND TECHNOLOGY (FISAT)
MOOKKANNOOR P O,
ANGAMALY-683577,
Affiliated to

MAHATMA GANDHI UNIVERSITY
2011

FEDERAL INSTITUTE OF SCIENCE AND TECHNOLOGY (FISAT)
Mookkannoor P O, Angamaly-683577.
Affiliated to

MAHATMA GANDHI UNIVERSITY, Kottayam- 686560
DEPARTMENT OF ELECTRICAL & ELECTRONICS
ENGINEERING

CERTIFICATE
This is to certify that this report entitled ³HVDC TECHNOLOGY AND SHORT CIRCUIT CONTRIBUTION OF HVDC LIGHT´ is a bonafide report of the seminar presented during 7th semester by JIJO FRANCIS (57164) in partial fulfillment of the requirements for the award of the degree of Bachelor of Technology (B.Tech) in Electrical & Electronics Engineering during the academic year 2010-2011.

Head of the Department

Date:
Place: Mookkannoor

ABSTRACT

The development of HVDC (High Voltage Direct Current) transmission system dates back to the 1930s when mercury arc rectifiers were invented. Since the 1960s, HVDC transmission system is now a mature technology and has played a vital part in both long distance transmission and in the interconnection of systems. Transmitting power at high voltage and in DC form instead of AC is a new technology proven to be economic and simple in operation which is HVDC transmission. HVDC transmission systems, when installed, often form the backbone of an electric power system. They combine high reliability with a long useful life. An HVDC link avoids some of the disadvantages and limitations of AC transmission. HVDC transmission refers to that the AC power generated at a power plant is transformed into DC power before its transmission. At the inverter (receiving side), it is then transformed back into its original AC power and then supplied to each household. Such power transmission method makes it possible to transmit electric power in an economic way.

HVDC Light is the newly developed HVDC transmission
technology, which is based on extruded DC cables and voltage source converters consisting of Insulated Gate Bipolar Transistors (IGBT¶s) with high switching frequency. It is a high voltage, direct current transmission Technology i.e., Transmission up to 330MW and for DC voltage in the ± 150kV range. Under more strict environmental and economical constraints due to the deregulation, the HVDC Light provides the most promising solution to power transmission and distribution. The new system results in many application opportunities and new applications in turn bring up new issues of concern. One of the most concerned issues from customers is the contribution of HVDC Light to short circuit currents. The main reason for being interested in this issue is that the contribution of the HVDC Light to short circuit currents may have some significant impact on the ratings for the circuit breakers in the existing AC systems. This paper presents a comprehensive investigation on one of the concerned issues, which is the contribution of HVDC Light to short circuit currents.

CONTENTS

Chapter 1

INTRODUCTION

1

Chapter 2

HVDC TECHNOLOGY

2

Chapter 3

HVDC LIGHT TECHNOLOGY

17

Chapter 4

SHORT CIRCUIT CONTRIBUTION OF HVDC LIGHT

24

Chapter 5

CONCLUSION

31

Chapter 6

REFERENCES

32

HVDC TECHNOLOGY AND SHORT CIRCUIT CONTRIBUTION OF HVDC LIGHT

1. INTRODUCTION
The development of HVDC (High Voltage Direct Current) transmission system dates back to the 1930s when mercury arc rectifiers were invented. In 1941, the first HVDC transmission system contract for a commercial HVDC system was placed: 60MWwere to be supplied to the city of Berlin through an underground cable of 115 km in length. It was only in 1954 that the first HVDC (10MW) transmission system was commissioned in Gotland. Since the 1960s, HVDC transmission system is now a mature technology and has...
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • Hvdc Light Technology Essay
  • Essay about Hvdc and Facts
  • HVDC Tutorial Essay
  • Hvdc Light Essay
  • Facts & Hvdc Essay
  • Essay about Verification of Hybrid Real Time Hvdc Simulator
  • Power Analysis of Hvdc Cigre Benchmark System Essay

Become a StudyMode Member

Sign Up - It's Free