Celsa Cardiff Steelworks Static VAR Compensator

Celsa(制造)英国是英国最大的钢筋制造商，也是其他钢长产品的最大制造商之一。现场有三个不同的加工区：Melt Shop，通过使用电弧炉(EAF)将废钢分拣、加工并熔化成钢坯，这是一种33千伏的系统，通过电极输送电流，用电力熔化100%的英国废金属；Sector Mill，将钢坯加工成商品棒材和轻型材，如在屋顶建筑中看到的那样；和棒材轧机，将钢坯轧制成加固产品和线材，其中一种用于在混凝土基础上设置钢筋网。在加的夫的这些设施中，Celsa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，在使用寿命结束时100%可回收。该项目旨在为高压电弧炉安装大型设备--静止无功补偿器(SVC)，并降低系统的无功功率。这反过来将减少在电弧炉内冶炼钢材所需的时间，从而增加与安装SVC之前相同能量的生产输出；预计还将提高整个Melt Shop天然气和低压电力效率。由于熔化车间的废钢熔化时间和产量成为下游加工厂的瓶颈，这一产量的增加也将加快Sector Mill和Rod&Bar Mill的流程，从而降低它们每吨钢产量的天然气和电力能耗。从战略上讲，这对整个英国也是一个非常有益的项目，因为目前英国7-8公吨的废钢被出口，在英国以外加工，然后不必要地再进口。相反，该项目将能够增加国内废钢加工和生产对英国经济具有高价值的钢铁，并实现与在世界各地额外运输废钢相关的碳自然减少。

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.