Hvdc Light
HVDC LIGHT TECHNOLOGY
ABSTRACT
[pic] 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. The HVDC (High Voltage Direct Current) technology is used to transmit electricity over long distances by overhead transmission lines or submarine cables. It is also used to interconnect separate power systems. A further development in this technology is HVDC light where HVDC light converters are used for faster and efficient conversion of power. HVDC Light is a fundamentally new power transmission technology developed recently. It is particularly suitable for medium to small-scale power transmission applications. This new transmission and distribution technology, HVDC Light provides an important role 1to today’s requirements on our network systems and opens up new opportunities for both investors and environmentalist alike. HVDC light technology for transmission of electric power is introduced in this paper. Its features, advantages and applications are pointed out. HVDC cables, their design, under ground laying , their advantages and applications are also added. The paper also gives a note on the advantages of HDVC light cables over AC underground cables. INTRODUCTION: Competition in the electricity power industry, coupled with continued load growth requires that the existing transmission system assets are utilised more effectively and some times closer to their technical limits. As the existing AC lines become loaded closer to their thermal capacity with increasing losses and reduced power quality we face the risk of declining network stability. One solution would be to simply build new, more powerful AC lines.
But, it is getting increasingly difficult to obtain permits to build new high voltage Overhead transmission lines, the
ABSTRACT
[pic] 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. The HVDC (High Voltage Direct Current) technology is used to transmit electricity over long distances by overhead transmission lines or submarine cables. It is also used to interconnect separate power systems. A further development in this technology is HVDC light where HVDC light converters are used for faster and efficient conversion of power. HVDC Light is a fundamentally new power transmission technology developed recently. It is particularly suitable for medium to small-scale power transmission applications. This new transmission and distribution technology, HVDC Light provides an important role 1to today’s requirements on our network systems and opens up new opportunities for both investors and environmentalist alike. HVDC light technology for transmission of electric power is introduced in this paper. Its features, advantages and applications are pointed out. HVDC cables, their design, under ground laying , their advantages and applications are also added. The paper also gives a note on the advantages of HDVC light cables over AC underground cables. INTRODUCTION: Competition in the electricity power industry, coupled with continued load growth requires that the existing transmission system assets are utilised more effectively and some times closer to their technical limits. As the existing AC lines become loaded closer to their thermal capacity with increasing losses and reduced power quality we face the risk of declining network stability. One solution would be to simply build new, more powerful AC lines.
But, it is getting increasingly difficult to obtain permits to build new high voltage Overhead transmission lines, the
References: 1. ABB products – hvdc and hvdc light 2. www.vattenfall.hvdc_eng.pdf 3.www.abb.com 4.www.pepei.pennnet.com 5.www.mena.abb.com 6.www.newmaterials.com