Stgz is a joint venture of siemens and guangzhou electric equipment group co. Existing connection under construction future plan. Power electronics in transmission systems coursewebs. Hvdc control reactive power control the reactive power balance of each side of the hvdc transmission will normally be performed by reactive power controller rpc. Voltage source converters vsc marketed as hvdc light by abb and as hvdc plus by siemens insulated gate bipolar transistor igbt technology does not require strong ac sources for commutation low short circuit ratio requirements does not have minimum transfer requirements minimal filtering is required at the terminals. Abstract smart grid is much more than it and smart meters.
However, due to the large number of sub modules and floating capacitors, control and operation of such a complex plant is very challenging. Vsc hvdc systems such as hvdc plus or hvdc light discuss modeling of hvdc systems discuss electromagnetic compatibility of hvdc with the adjacent ac power system, including harmonics and filtering, and reactive power compensation discuss hvdc technical problems that may be encountered when installing these elements in an existing. Components are designed to work together seamlessly, delivering the most costeffective, right sized drive system for any application. Generally overhead lines are used for interconnection, but an important class of hvdc projects use submarine power cables. By contrast with the conventional hvdc version, which can only be used in networks with sufficient shortcircuit capacity, systems using hvdc plus make it possible to start up island. Csc hvdc for the grid connection of offshore wind farms 1,10. Highvoltage substations highvoltage global siemens. The converter technology used by siemens is called hvdc plus, and is essentially a voltagesourced converter of the modular multilevel converter type vsc mmc. Hvdc projects for longdistance transmission have two or rarely, more converter stations and a transmission line interconnecting them. Principles of hvdc controls control of dc voltage dc voltage is varied by means of a converter bridge in rectifier operation the power flow is from the ac system to the dc. Technology, benefits, applications modern modern convertersconverters voltagevoltage sourcedsourcedvscvsc modular modular multilevelmultilevel mmcmmc isie 2010 power transmission solutions july 2010 hvdc plus. In hvdc plus monopole applications, no dc voltage stresses occurs at the transformer valve terminals. Siemens to install indias first vsc hvdc link power. The igbtbased siemens hvdc plus is build out of selfcommutated systems with indirect voltage link voltagesourced converters, vsc and operates with the newest type of the modular multilevelconverter mmc, which is used in the ultranet project, and has a transmission capacity up to 2000 mw at a voltage of 500 kv dc.
Innovative, high quality and outstanding expertise zhoushan 5terminal vsc terminal vschvdc project, being an island power network which has the largest number of terminals and the largest capacity of same voltage as. Compatibility of hvdc transmission lines with signal systems. A consortium between siemens and sumitomo electric industries ltd. France spain hvdc link santa llogaia baixas tunnel rated power. This article describes the new dynamic simulation model called hvdcplu1for the simulation of hvdc plus in psse. A smartgrid is an electricity network that can intelligently integrate the actions of all users connected to it generators, consumers and those that do both in order to efficiently deliver. Converter hvdc a hvd light siemens hvd plus alstom hvd maxsine based on transistor rather than thyristor igbt or similar simpler transformers no dc stress reduced harmonics simple buildings 3. Hvdc circuit breakers are difficult some mechanism must be included in the circuit breaker to force current to zero. Page 2 electricity ten year statement november 20 description converters form the terminals of an hvdc transmission system and are used to convert ac power to. Review of vsc hvdc connection for offshore wind power. The siemens hvdc plus igbt technology is an innovative application in the field of hvdc transmission systems. Nemo link interconnector enables transmission of mw electricity using siemens hvdc plus technology siemens built converter stations housing the state of the art hvdc equipment in both herdersbrug belgium and richborough uk official opening ceremony on december 5 in herdersbrug near brugge with belgian and uk dignitaries.
Hvdc power supplies are designed for shortterm operation. Igbts thyristors with turnon capability only selfcommutated voltagesourced converter vsc linecommutated currentsourced converter lcc hvdc classic hvdc plus changing technologies drive changing solutions. Siemens connected in a meshed ac network dc cable length. The system configuration of a vsc hvdc connection for an offshore wind farm is illustrated in figure 1 10. High voltage direct current hvdc systems enable utilities to move more power further, interconnect grids, integrate renewables, and improve network performance. Voltage source converter solution hvdc ieee pes boston. Stabilized power flows improve transmission grid performance. Analogue to digital audio converter operation manual. Hvdc power supplies are suitable for quick charging of large capacitor banks e. Siemens to install indias first vsc hvdc link by saqib saeed 2017, march, 29 a consortium between siemens and sumitomo electric industries ltd.
Wherever you are, siemens is your reliable partner for the onestop planning and construction of customized, stateoftheart highvoltage. As opposed to the conventional hvdc, its design provides technical as well as economical advantages. High voltage direct current hvdc systems grid solutions. Abb has participated in the delivery of more than half of the worlds around 170 hvdc links. A monopolar hvdc system with ground return consists of one or more sixpulse converter units in series or parallel at each end, a single conductor and return through the earth or sea, as shown in figure 2. The hvdc plus terminology is used for a hvdc transmission system which is based on voltage sourced converter vsc insulated gate.
A new vschvdc model for power flows using the newtonraphson method enrique acha, senior member, ieee, behzad kazemtabrizi, member, ieee, luis m. Siemens vschvdc technology, known as hvdc plus, represents. Hvdc circuit breakers are difficult some mechanism must be included in. Features and benefits of hvdc plus multilevel topology modular concept standard power electronics compactness of station design low switching frequency elimination of high frequency stresses conventional ac transformers proven siemens wintdc core hardware l l module 1 module 2 module n. When supported by siemens digitalization technology, your productivity is enhanced and repair time is. Hvdc disadvantages hvdc is generally less reliable and has lower availability than hvac. Siemens high voltage direct current systems hvdc provide the most efficient way of energy transmission over long distances and to support the improvement of the grid stability. High voltage direct current hvdctransmission systems. The hvdcplus from siemens, hvdclight from abb and hvdcmaxsine from alstom are examples of the implementation of the mmc concept in applications for vschvdc transmission 1415. Hvdc plus trans bay cable project worlds first mmcvsc technology in commercial operation 22 nov 20 e t ts 2 hvdc energy sector transmission solutions.
Voltage source converters description converters form the terminals of an hvdc transmission system and are used to convert ac power to dc rectifier and dc power to ac inverter. Peter kohnstam, 22 april 20, united states department of. Panel electric highways michael schneider, siemens irena. Mainly due to the extra conversion equipment and maintenance difficulty. Siemens ag berlin and munich is a global technology powerhouse that has stood for engineering excellence, innovation, quality, reliability and internationality for more than 170 years the company is active around the globe, focusing on the areas of power generation and distribution, intelligent infrastructure for buildings and distributed energy systems, and automation and digitalization. Hvdc transformers are used for selfcommutated voltagesourced converters. Hvdc classichvdc classic hvdc plushvdc plus dc ac grid 1 ac grid 2 selfcommutated voltagesourced converter vsc linecommutated currentsourced converter lcc hvdc classic hvdc plus semiconductor switches with turnon and turnoff. Distributed modulation and control of modular multilevel. The hvdc plus from siemens, hvdc light from abb and hvdc maxsine from alstom are examples of the implementation of the mmc concept in applications for vsc hvdc transmission 1415. Versatility at your service as an innovation leader, siemens has developed an advanced, universally applicable solution for power transmission with its voltagesourced converter vsc technology hvdc plus. Hvdc classichvdc classic hvdc plushvdc plus dc ac grid 1 ac grid 2 selfcommutated voltagesourced converter vsc linecommutated currentsourced converter lcc hvdc classic hvdc plus semiconductor switches with turnon and turnoff capability, e.
Principles of hvdc controls control of dc voltage dc voltage is varied by means of a converter bridge in rectifier operation the power flow is from the ac system to the dc system the power flow is changed from the dc system to the ac system by reversing the dc voltage. Each rpc is located in the pole control level and operates independently from the rpc in the other end of the hvdc transmission. This is a list of notable highvoltage directcurrent power transmission projects. A new vschvdc model for power flows using the newton. Hvdc systems utilize power electronics technology to convert ac and dc voltage, and are ideal for supporting existing systems or building new power highways. Abb library is a web tool for searching for documents related to abb products and services. The power electronics in transmission systems course presents operating and control fundamentals of these technologies.
Prysmian group, world leader in the energy and telecom cable systems industry. Cschvdc for the grid connection of offshore wind farms 1,10. Siemens delivers hvdc plus converter transformers for transmission lines up to 1,200 mw, up to 500 kv dc with connections to ac grids up to 525 kv. In 2010 siemens installed its first vsc hvdc system in. Thanks to the ability to produce the entire range of components required for 800 kv dc power transmission, siemens can supply turnkey solutions for complete uhvdc transmission systems.
Highvolts hvdc power supplies usually feature a voltagedoubling circuit see fig. Modern hvdc plus application of vsc in modular multilevel converter topology published on jul 1, 2010 in isie international symposium on industrial electronics doi. Beginning with a brief historical perspective on the development of high voltage direct current hvdc transmission systems, this paper presents an overview of the status of hvdc systems in the world today. Siemens converter stations for channel tunnel power link. Siemens conventional hvdc system prysmian 500kv massimpregnated cable 660mw transfer capability between direct currentconverterstations in sayreville, nj and north hempstead, ny 65 mile cable. The hvdcplus from siemens 12, hvdclight from abb, and hvdcmaxsine from alstom 14 are examples of the implementation of dscc concept in. The hvdc power modules and hvdc transformers will be manufactured at two siemens factories in nuremberg, germany. Principles of concept a new modular multilevel converter mmc topology has been introduced by siemens into hvdc applications during. The next level of hvdc technology was ushered in when siemens developed its 6inch thyristor and all other components required for uhvdc converter stations.
Prysmian group, world leader in the energy and telecom cable. Both converter stations will be using hvdc plus voltagesourced converters in a modular multilevel converter arrangement vscmmc that convert ac to dc and dc back to ac on the other side of the link. Nov 27, 2011 hvdc, and recent improvements such as abbs hvdc light or siemens hvdc plus, are currently restricted to pointtopoint use, such as linking a huge, but remote, hydro electric plant to. Hvdc, and recent improvements such as abbs hvdc light or siemens hvdc plus, are currently restricted to pointtopoint use, such as linking a huge, but remote, hydro electric plant to. Eirgrid is investigating the viability of utilizing underground cable technology in. Innovations in hvdc transmission technology have made it possible to consider the compatibility of sharing railroad corridors with buried hvdc transmission lines. Recent siemens hvdc activites, yuriy kazachkov, siemens pti. Hvdc high voltage direct current and facts flexible ac transmission system, are most prominent. Abb and siemens in hvdc power race financial times. Electricity ten year statement appendix e technology sheets. 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. Siemens completes installation of second hvdc converter. Introduction eirgrid plc eirgrid is currently developing the grid west project, a major transmission project in ireland.
Hvdc plusbasics and principle of operation request pdf. Pdf modern hvdc plus application of vsc in modular. Siemens has been a pioneer of hvdc technology right from start and. Siemens electromechanical drive systems help you increase uptime and minimize total cost of ownership tco. Hvdc classic siemens experience gezhoubanan qiao etzenricht 1993 wien sudost 1993 durnrohr 2014 1983 moyle 20 black sea transmission 1989 2004 2010 estlink 2 2007. Hvdc plus is a technological breakthrough for highly efficient. The hvdcplus from siemens 12, hvdclight from abb, and hvdc maxsine from alstom 14 are examples of the implementation of dscc concept in. The objective of this paper is to present a summary of the compatibility issues and their solutions.
Stephen conant svp, anbaric transmission april 22, 20. Hvdc and facts, which can eliminate the drawbacks of twolevel topology and provides advantages with respect to the performance as well 2. Electricity ten year statement appendix e technology. Stgz produces hvdc converter transformers up to 800kv, power transformers with ratings up to kv, oilinsulated distribution transformers with ratings up to 8mva35kv, and cast. The information given in this document only contains general. The siemens hvdc transmission employing the voltage source converter modular multilevel technology is called the hvdc plus. Hvdc plus is our latest development for ensuring economical power transmission and providing controlled power supply to the connected networks. Siemens connects electricity grids of uk and belgium with. Key features france spain hvdc link santa llogaia baixas tunnel rated power. Presented at the 40th meeting of study committee b4 and colloquium on role of hvdc, facts and emerging technologies in evolving power systems, bangalore sept. An overview article pdf available in ieee transactions on power electronics 243. Review of vsc hvdc connection for offshore wind power integration. A new vsc hvdc model for power flows using the newtonraphson method enrique acha, senior member, ieee, behzad kazemtabrizi, member, ieee, luis m. Hvdc converter technologies semiconductor switches with turnon and turnoff capability, e.
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