澳Solastor拟投资7亿美元在奥古斯塔港建设100MW塔式光热电站
CSPPLAZA光热发电网讯：目前，澳大利亚新能源公司Solastor正计划在澳大利亚奥古斯塔港投资7亿美元建造一座塔式光热发电站。据悉，该项目将采用Solastor公司模块化的塔式太阳能热发电技术建设，总装机100MW。Solastor方面表示，即使政府不提供资金支持，Solastor也具备独立建设该项目的经济能力。
将采用模块化石墨储热技术
据Solastor方面介绍，该项目首期工程的建设过程将创造500个就业机会，其中包括250个现场施工岗位和30个长期的运维工作岗位。总装机100MW的光热电站将配置两个单机50MW的蒸汽涡轮机组，预计将由800个模块系统组成，每个模块系统都包括一个以石墨为工作介质的集热塔和86面由电脑操控的环形定日镜。
这些定日镜将阳光集中反射到一台10吨重的石墨太阳能吸热器以收集热量，为了大规模存储热能，该吸热器将被加热到800摄氏度左右。据了解，每座塔高24米，大小仅为风力发电机的六分之一。吸热器收集的热能被传送到一个充满水的嵌入式不锈钢管道系统中，水在该系统中被不断加热蒸发生成蒸汽。蒸汽再被送入蒸汽涡轮发电机，产生的电力被送到当地电网。
图：Solastor模块化塔式光热发电系统
据了解，该工程的相关规划文件预计将在六个月内上报给澳大利亚国家发展委员会，若顺利通过审查，则计划于2018年动工。
为何选址奥古斯塔港？
关于为何选择在奥古斯塔港建设该项目，Solastor的首席执行官SteveHollis解释道：“关键是南奥古斯塔地理位置很理想，阳光充裕。虽然这里的阳光比不上其他的一些地理位置绝佳的地方，比如RoxbyDowns（澳大利亚南部小城），但是奥古斯塔港已经接入电网。这里有一座位于达文波特（Davenport）电力中转场的小型电站，负责艾琳塔（Alinta，一家澳洲能源设备建设公司）发电站的电网并入。除此之外，在人力资源方面，奥古斯塔港有大量的建设与后勤就业需求。”
Hollis同时表示，Solastor公司并不需要州政府的能源招标为该项目提供支持，另外公司已与当地的土地持有者达成协议。
未来总装机或扩至500MW
据Hollis透露，未来Solastor公司有可能将该项目的总装机规模扩大至500MW，由于采用模块化系统，这个扩大的过程有可能将如同“复制粘贴”一样轻松。
一旦该计划得到实施，又将产生2000个就业岗位，其中包括1000个现场施工岗位和12个长期的运维岗位。Hollis还表示，该项目可以与其他光热项目并存。
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Source: Solastor.com.au China
Further detail has been released on the proposed development of a “baseload” solar thermal and storage power plant in Port Augusta, South Australia, using Australian made technology owned by NSW-based company Solastor.
The ambitious 170MW, $1.2 billion project was officially launched in Adelaide on Tuesday by Solastor’s high profile chairman, John Hewson, who said he was confident the technology could produce the lowest-price 24/7 solar power in the world.
And according to Solastor, this low cost of the technology, along with its “dispatchability”, makes it “the ideal technology” to replace the almost 20,000 megawatts of coal-fired power plants “that will inevitably be phased out over the next 10 to 20 years,” as well as diesel generation systems such as those used in remote communities, islands and mine sites.
In Australia alone, the company says, there could be a market for 400 Solastor plants.
Hewson – an economist and one-time leader of the federal Liberal Party who advises the current Coalition government on climate change and the low-carbon economy – says the proposed Port Augusta plant will be funded mostly by private investors (he has also suggested that one bank has offered to fund “the lot”) with possible added support from the Clean Energy Finance Corporation and ARENA.
“Basically, we don’t see that there will be any difficulty financing it,” Hewson said in interviews on Tuesday.
“This is world-class. We think this is something we can roll out not only across Australia but internationally. It’s Australian technology, it gives Australia a real edge … in actually being able to turn sunlight into effective baseload energy,” he said.
“We’re going to break (the Port Augusta project) into two stages: 50MW in the winter and 80MW in the summer is stage one, then repeat it stage two. So that’s $530 million to raise in the first stage and we’re pretty confident that we’re well-advanced in terms of that financing.”
Hewson said the plant, which would have a capacity of 110MW in winter and 170MW in summer, would use technology that had been proven in China, at a small pilot plant built in the Jiangsu province (pictured below).
The main advantage of the Solastaor system, he argues, is its storage
capabilities, which allow it to provide 24/7, “dispatchable” clean
energy – a feature of all solar thermal technology that makes it a
favourite technology for 100 per cent renewable scenarios.
But unlike many other solar thermal technologies, which use molten salt for storage, Solastor uses a “high purity” block of graphite – 10 tonnes per storage tank, per 24 metre tower – which can be heated to a maximum of 800°C and store “effective energy” for up to a week, according to the company, depending on thermal losses and the energy draw-down rate of the system.
In terms of bird deaths, this is likely a reference to the US Crescent Dunes CSP tower plant which, as was reported here last year, caused the death of 115 birds during testing of the heliostats in standby position, when they are not aimed at the tower receiver but somewhere in the air. The problem – basically, the “halo” of intense sun rays reflected by 3,000 heliostats killed the birds as they flew through it – was, however, promptly resolved by SolarReserve engineers.
Solastor says this is unlikely to happen with its technology, which is modular – so rather than pointing thousands of heliostats at one central tower, clusters 86 sun-tracking heliostats around each tower (as you can see in the Chinese example pictured above). It will have 1700 such towers in a facility of the size proposed for Port Augusta.
Another claimed advantage of the modular design, according to Solastor, is that plants can be constructed on uneven terrain, making their location more flexible.
The company says it is aims to build a five-tower, 1MW demonstration plant by the end of this year, which it would connect to the grid via the existing connection at Port Augusta.
And if it succeeds, and expands the plant to a 170MW facility, Solastor says it would be able to power more than 200,000 homes and fill the gap left when the last of South Australia’s coal-fired power stations shut down in Port Augusta last month.
“Solar thermal heat storage and power generation is more cost-effective than solar photovoltaic or wind energy, which require expensive electric battery support to provide uniform power delivery,” Hewson said at the launch on Tuesday.
According to Solastor’s calculations, the price for power from one of its power stations will be approximately 12c/kWh, including generation and storage, which will then fall to 6c/kWh once financing costs are paid and then 4c/kWh in the second half of the facility’s 50-year life.
“We can produce the lowest price 24/7 solar power in the world and we’re confident of that,” Hewson told Indaily.com.
Hewson also argues that solar thermal generation is cleaner than existing solar PV and wind generation, which he says “often require fossil fuelled generation support to level out intermittent power delivery to the grid.
“With this new facility, South Australia will be able to increase its renewable energy capacity and reduce its dependence on power imports from Victoria, after having lost approximately 25 per cent of its baseload power supply due to the recent closure of the Port Augusta coal fired power station,” Hewson said at the launch.
Meanwhile, Solastor is working to generate bi-partisan support “at all levels of government” for the project – federal environment minister Greg Hunt was front and centre at the launch, as was his Labor counterpart Mark Butler and representatives of the SA government – as well as support from the local community.
The latter may be more difficult than it sounds, considering the proposed 110MW-170MW plant would include 1,700 24 metre tower modules.
According to the aforementioned Q&A, each module occupies a footprint of 2,400m2, and with allowances for access, the power station and associated facilities, would amount to approximately 4 modules per hectare.
A “typical” large-scale Solastor power station capable of providing 50MW in winter and 80MW in summer – so half the size of the plant proposed for Port Augusta – would be made up of 780 modules and occupy approximately 200 hectares.
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以下轉載自: http://hiltonparkexperience.com.cy/events/eosolar
Nicosia,
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模块化的单个系统塔高24米，配置100面定日镜，储热系统可存储3MWH可用热能，约可发电1MWh。理论上组建一个10MW的每天可持续运行12小时的塔式电站，需要120个模块系统就可完成；如果需要24小时连续发电，则需要240个模块系统；同样，一个20MW的每天可持续运行12小时的塔式电站，需要240个模块系统就可完成；实际中可能会有所出入。轉載自:
http://www.cspplaza.com/article-856-1.html
