Celsa Cardiff Steelworks Static VAR Compensator

Celsa（制造）英国是英国最大的钢筋制造商，也是其他钢铁长材产品的最大制造商之一。现场有3个不同的加工区：熔化车间，在那里，废钢被分类、加工并通过电弧炉熔化成钢坯，电弧炉是一个33千伏的系统，通过电极输送电流，用电熔化100%的英国废金属;型材厂，在那里，钢坯被加工成商业棒材和轻型型材，如屋顶建筑中所见的型材;以及棒料和棒材轧机，在这里，钢坯被轧制成钢筋产品和线材，其中一种用途是混凝土基础中的钢筋网。CELSA在卡迪夫的这些工厂每年生产和交付约120万吨成品，主要供应英国和爱尔兰市场，并且在其使用寿命结束时100%可回收。该项目旨在为高压电弧炉安装大型设备，即静止无功补偿器（SVC），以降低系统的无功功率。这反过来又将减少在电弧炉内熔化钢所需的时间，从而增加与安装SVC之前相同能量的产量;预计还将提高整个熔炼车间的天然气和低压电力效率。由于熔化车间的废料熔化时间和产量成为下游加工米尔斯的瓶颈，这一产量的增加还将加快型钢厂和棒线材厂的生产过程，从而降低每吨钢产量的天然气和电力能耗。从战略上讲，这对整个英国来说也是一个非常有利的项目，因为目前英国有7- 800万吨废钢出口，在英国境外加工然后毫无必要地再进口相反，该项目将增加国内废钢加工和生产对英国经济具有高价值的钢铁，并自然减少与世界各地额外运输废钢相关的碳。

Celsa (Manufacturing) UK is the largest manufacturer of steel reinforcement in the UK as well as one of the largest manufacturers of other steel long products. There are 3 distinct processing areas at the site: the Melt Shop, where scrap steel is sorted, processed and melted into billets through the use of an electric arc furnace (EAF) -- a 33kV system that sends current through electrodes to melt 100% UK scrap metal with electricity; the Section Mill where the billets are processed into merchant bar and light sections such as those seen in roof construction; and the Rod & Bar Mill where the billets are rolled into reinforcing products and wire rod with one use being rebar mesh in concrete foundations. From these facilities in Cardiff, CELSA produces and delivers around 1.2 million tonnes of finished product each year, mainly supplying the UK and Irish Markets, and is 100% recyclable at the end of its life.This project looks to install a large piece of equipment, a static VAR compensator (SVC), to the high voltage EAF and reduce the reactive power of the system. This in turn will reduce the time it takes to melt steel within the EAF and thereby increasing the production output for the same energy as before an SVC is installed; it is anticipated to also improve the whole Melt Shop natural gas and low voltage electricity efficiency as well. As the scrap melting times and output of the Melt Shop bottlenecks the downstream processing mills, this increased production will also enable the speed up of the Section Mill and Rod & Bar Mill's processes and thereby reduce their energy consumption per tonne of steel output both for natural gas and electricity.Strategically this is also a highly beneficial project to the UK as a whole since currently 7-8Mt of UK scrap is exported, processed outside of the UK, and then reimported needlessly. Instead, this project will enable an increase of domestic scrap processing and production of steel with a high value to the UK economy and the natural reduction in carbon associated with the extra transport of scrap around the world.