Index terms hvdc, vsc, transmission, short circuit current, ac fault i. The hvdc light is a technology based on voltage sources converters vsc s. Traditional hvdc, or if you like hvdc heavy, is designed for high voltage, direct current. Traditional hvdc, or if you like hvdc heavy, is designed for high voltage, direct. Jun 04, 2015 final hvdc ppt aaron pasterski and john hernandez. Ppt hvdc light technology powerpoint presentation free to. Hvac has been the backbone of power transmission for over a century, and it has. Ppt hvdc light technology powerpoint presentation, free.
When the technology was introduced it was based on a twolevel. Hvdc light a new technology for a better environment. Abb and hvdc the worlds first commercial highvoltage direct current hvdc link, situated between the swedish mainland and the island gotland, was delivered by abb already in the 1950s. Hvdc light, based on vsc technology voltage sourced converter, is designed to transmit power underground and under water, also over long distances. Circuit breakers used to break cct if fault occurs in the transformer and for taking the dc link out of service. It consists of two ac to dc converter stations and a pair of underground cables interconnecting each converter station. Hvdc systems utilize power electronics technology to convert ac and dc voltage, and are ideal for supporting existing systems or building new power highways. Murraylink, the worlds longest underground highvoltage connection australia the murraylink 220 mw interconnector between the riverland in south australia and sunraysia in victoria is a 177 kilometre underground highvoltage power link. In 1995 abb announced a new concept for hvdc converter stations, hvdc with capacitor commutated converters ccc, which further improves the performance of hvdc transmissions. The hvdc link includes multiple control schemes and dynamic models for.
Compared to alternating current, the direct current system is less expensive and loses less energy. Hvdc technology if dc is required to be used for transmission and since our primary source of power is a. The system which uses the direct current for the transmission of the power such type of system is called hvdc high voltage direct current system. Hvdclight technology ppt video online download slideplayer. Contents introduction hvdc system overview motivations of hvdc transmission components of hvdc transmission system advantages and disadvantages of hvdc transmission system economical and environmental considerations hvdc applications hvdc light technology short circuit contribution of hvdc light. The murraylink project in australia uses abbs hvdc light technology. Two technologies offered by the manufacturers are the hvdc light and the hvdc plus.
Hvdc a key solution in the future transmission system. Are you looking for ehv ac and hvdc transmission engineering by s rao free download pdf. Presented by the hvdc light is a technology based on voltage sources converters vsc s which emphasizing the light weight and compactness features intrinsic to it as well as competitiveness in application in the low end of the power scale. The link has been transmitting power since april 2000. Comparison between conventional hvdc and hvdc light there are different basis on which conventional hvdc system and hvdc light can be compared. Hvdc light technology hvdc light is a concept of modern technology based on bipolar converters and extruded dc cables with power units up to 300 mw. Ground return most dc transmission lines use ground return for reasons of economy and reliability ground return are used by the monopolar and the bipolar link for carrying the return current. Hvdc light technology transmitting power at high voltage and in dc form instead of ac. The hvdc technology is used in transmission systems to transmit electric bulk power. Highvoltage ac transmission links have disadvantages, which may compel a change to.
Analysis of hvdc and hvdc light technology swati srivastava department of electrical engineering, amity university, noida, india. Ppt hvdclight technology powerpoint presentation free. They have extended the use of hvdc down to blocks as small as a few tens of megawatts and overhead lines as short as a few dozen kilometers. Compared to ac, dc transmission has several advantages. And in 1997 a completely new converter and dc cable technology called hvdc light was introduced. A new transmission and distribution technology, hvdc light, makes it economically feasible to connect smallscale, renewable power generation plants to the main ac grid. Hvdc light is a high voltage, direct current transmission technology i. It transmits the power between the unsynchronized ac system. Hvdc light technology high voltage direct current electric power. Abb writes the next chapter in pioneering high voltage direct current technology. Hvdc system in india government of india ministry of power. Introduction vdc light is the newly developed hvdc transmission technology, which is based on extruded dc cables and. High voltage direct current hvdc cable has the ability of transmitting electrical energy over long distances in an economical way, with improved stability and reliability 1 23. Contents introduction hvdc light technology hvdc light basic principle.
Get details of ehv ac and hvdc transmission engineering by s rao free download pdf. What is hvdc light the hvdc light is a technology based on voltage sources converters vsc s which. In contrast to linecommutated hvdc transmission, the polarity of the dc link voltage remains the same with the dc current being reversed to change the direction of power flow. Scribd is the worlds largest social reading and publishing site. The rapid development and the increased confidence in the hvdc technology have caused the transition from ac to dc. Hvdc light technology is designed to transmit large quantities of power using underground cables and at the same time adds stability and power quality to the connected networks. Development of shall transmit power to the tune of 60008000 mw. Technology of high voltage dc hvdc networks, their. Hvdc for beginners and beyond 9 in place of ground return, a third conductor can be added endtoend.
The manufacturer abb group calls this concept hvdc light, while siemens calls a similar concept hvdc plus power link universal system and alstom call their product based upon this technology hvdc maxsine. Hvdc disadvantages hvdc is generally less reliable and has lower availability than hvac. The technology is used to transmit electricity over a long distance by using an overhead transmission wire. Comparison between hvdc light vsc and hvdc classic lcc. Directlink project queensland new south wales in australia. High voltage direct current hvdc systems grid solutions. Download as ppt, pdf, txt or read online from scribd. We collected most searched pages list related with ehv ac and hvdc transmission engineering by s rao free download pdf and more about it. Although the vast majority of power is transmitted via highvoltage alternating current ac lines, there are applications and situations where hvdc technology is preferred or even required. The present number of links based on this technology is around 120. The integrated modeling of the hvdc link is utilized to analyze steadystate and dynamic behavior of acdc transmission networks, such as optimal power flows, contingency, shortcircuit, harmonics, protection, selectivity, and transient stability studies. Hvdc light has considerably higher dynamic performance compared to hvdc classic, but still hvdc classic is dominating for low cost bulk transmissions. The hvdc system is less expensive and has minimum losses.
Hvdc a key solution in future transmission systems. Analysis of hvdc and hvdc light technology 715 figure 2. Ppt hvdclight technology powerpoint presentation, free. Hvdc light technology as its name implies, hvdc light is a high voltage, direct current transmission technology and is well suited to meet the demands of competitive power market for transmission up to 330mw and for a dc voltage in the 150kv range. Technology for a better environment presentation transcript. An example of this type of application is the 180 mw direct link connection 2000 in australia. For connecting two networks or system, various types of hvdc links are used. Vice versa, using the very same technology, remote. Mainly due to the extra conversion equipment and maintenance difficulty. Caprivi link interconnector a step further in hvdc light. Hvdc light technology is not yet implemented in india but in australia, at direct link and murray link, we have two such examples where hvdc light technology with underground dccables has been implemented in a competitive, marketoriented network service.
Mod08 lec28 dc link current and dc capacitor current in a voltage. High voltage direct current hvdctransmission 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. Jun 07, 2012 using hvdc to inter connect two points in a power grid, in many cases is the best economic alternative, and further more it has excellent environmental benefits. Ppt hvdclight technology powerpoint presentation free to. Caprivi link interconnector a step further in hvdc light technology. A free powerpoint ppt presentation displayed as a flash slide show on. As a key enabler in the future energy system based on renewables, hvdc is truly shaping the grid of the future. The area of application of both the systems varies and is one of the most demanded transmission system. Hvdc overland links are usually bipolar, on overhead lines.
Presented by the hvdc light is a technology based on voltage sources converters vsc s which emphasizing the light weight and compactness features. Hvdc light technology free download as powerpoint presentation. Abstract 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. Bulk power transmission over long distances is an application ideally suited for dc. Transmitting power at high voltage and in dc form instead of ac is a new technology. While developing hvdc light, the abb team had three key engineering breakthroughs. Application based hvdc transmission types hvdc is an alternative for submarine transmission. Nemo link is an hvdc electrical line of 1 gw connecting the grids of belgium to uk. Hvdc highvoltage direct current ppt topics for seminar. High voltage dc transmission presented by far09005 far090 far09024 muqadsa iftikhar zunaib ali madiha naeem. Hvdc can be transmitted through cables both underground and underwater. Economical even for shorter distances such as a few 10kmmiles 23. These converter stations are compact and by virtue of their control they do not contribute to the short circuit levels. Abb has participated in the delivery of more than half of the worlds around 170 hvdc links.
Hvdc introduction hvdc technology is used to transmit electricity over long distances by overhead transmission lines or submarine cables. Hvdc circuit breakers are difficult some mechanism must be included in the circuit breaker to force current to zero. Hvdc light was the preferred choice due to the short delivery time, just 12 months and the ease of cable installation. Hvdc light technology 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. Ltt light triggered thyristor silicon wafer and housing. Technology of high voltage dc hvdc systems, their applications and problems on photo.
It offers numerous environmental benefits, including invisible power lines, neutral electromagnetic fields, oilfree cables and compact converter stations. Hvdc electricity transmission is a proven technology with successful projects in operation around the world. Operational experience of hvdc light kjell eriksson. Presented by the hvdc light is a technology based on voltage sources converters vsc s which emphasizing the light weight and compactness features intrinsic to it. Hvdc systems in india usaid sarienergy integration.
A pair of lightweight dc cables can be laid direct in the ground in a cost effective. Hvdc light is abbs vschvdc technology which offers many. This presentation discusses highvoltage, direct current hvdc systems, and gives a comparison between the site aspects for hvdc light voltage source converter and hvdc classic line commutated converter methods for a 500mw 400kv hvdc transmission scheme. The increasing rating and improved performance of selfcommutated semiconductor devices have made possible high voltage dc hvdc transmission based on voltagesourced converter vsc. Ppt hvdc light technology powerpoint presentation free. The recent 15 years, also a new technology is used, hvdc light, based on vsc voltage source converters. Hvdc is an established technology that has been in. Hvdc light technology high voltage direct current rectifier. On the short circuit current contribution of hvdc light. Ground return most dc transmission lines use ground return for reasons of economy and reliability ground return are used by the monopolar and the bipolar link for.
High voltage dc hvdc link software hvdc transmission line. Comparison between hvdc light vsc and hvdc classic lcc site a. Abb writes the next chapter in pioneering hvdc technology duration. Abb enables interconnection of france and uk power. Hvdc light technology advantages include that the flow of energy over the link can be precisely defined and controlled, so that the capacity rights required for fully commercial network service are readily defined. These converter stations are compact and by virtue of their control they. Dec 06, 20 application based hvdc transmission types upto 3000 mw hvdc represents the most economical solution to transmit electrical energy over distances greater than approx.
High voltage direct current hvdc systems enable utilities to move more power further, interconnect grids, integrate renewables, and improve network performance. The converter stations are designed to be unmanned and virtually maintenancefree. The vision was to create a more efficient, controllable and financially viable technology to supplement the traditional hvdc systems at the time. It offers no overhead lines, neutral electromagnetic fields, oilfree cables and.
Hvdc classic bu grid integration product portfolio april 18, 2017 slide 24 abb offers a. Introduction a new transmission and distribution technology, hvdc light, makes it economically feasible to connect smallscale, renewable power generation plants to the main ac grid. The technology is used to transmit electricity over a. Charpentier raghuveer sharma abb power systems world bank abb financial services sweden united states sweden synopsis beginning with a brief historical perspective on the development of high voltage direct current hvdc.
283 715 1397 450 1270 884 638 596 284 765 794 1506 764 899 948 197 212 96 883 83 1437 891 483 719 1075 761 676 395 576 946 364 1492 1059 862 96 288 743 601 1257 871 284 862 806