UPS故障导致机组DCS系统故障过程分析

分析电厂1号机组突发的DCS故障。由于DCS系统的电源UPS发生故障,DCS计算机非正常停电重启,失去了大量的故障过程数据。通过收集各系统残存数据,对DCS部分原始数据解读,并结合设备现象,分析出DCS系统故障的总脉络,分析出过程中机组的重要工艺保护,分析出UPS故障后导致DCS系统故障的关键所在,并进一步提出了冗余电源切换装置的技术要求。     

多元时序模糊聚类分段挖掘算法

工业监控系统所采集到的多元时间序列在利用数据挖掘技术获取内部存在的未知模式的过程中,经常会出现原始数据庞杂、分段结果重复、交集过多和界限不清晰等问题,导致含有突变变量或数据间相关性差的数据集进行模式挖掘结果不理想.针对上述问题,本文提出了一种新的多元时序模糊聚类分段挖掘算法.实验结果表明,该算法克服了Gath-Geva算法聚类精度易受初始值影响的不足,能够较好地反映出原始数据中潜在的过程变化,从而有效地处理时间序列的分段问题并得到理想的挖掘结果.      

矿石产量灰色系统GM（1,1）模型的建立及预测

应用灰色系统理论的数学原理及建模过程,建立了矿石产量的ＧＭ（１,１）模型,应用该模型对陕西省某金矿每季度矿石产量进行灰色预测,采用“残差检验法”和“滚动检验法”进行检验。结果表明,ＧＭ（１,１）模型的预测精度高,适合于具有灰色特征的地质、采矿、选矿等原始数据序列的模拟控制和预测分析。     

谈商业智能（BI）系统中数据的理解与处理

商业智能（BI）主要实现将来自不同企业运作系统的数据转换为企业决策信息的过程。数据预处理是整合企业原始数据的第一步,它包括数据的抽取（Extraction）、转换（Transformation）和装载（Load）三个过程（即ETL过程）;建立数据仓库则是处理海量数据的基础;数据分析是体现系统智能的关键。数据挖掘的目标则是挖掘数据背后隐藏的知识,通过关联分析、聚类和分类等方法建立分析模型,预测企业未来发展趋势和将要面临的问题。     

烟气CEMS系统准确度判定在生产中的运用

文章介绍了八钢炼铁系统CEMS设备运行管理过程中,按照HJ 75-2017,HJ 76-2017标准并结合现场实际,通过CEMS数据准确度的基本判定依据,对气态污染物污染因子SO_2、NOx采用参比方法形成手工监测原始数据并与同时段CEMS设备监测数据形成数据组,建立准确度判定计算表,形成CEMS系统数据准确度判定基本方法。     

质量信息局域网的设计与应用

基于济钢质量检验工作流程的质量信息局域网由质量证明书系统、质量信息管理系统和网络办公系统等组成，可实现对原始数据的统计分析、自动生成质量报表及台帐等功能，提高了信息传递速度和准确性，为济钢的生产、经营决策提供了及时、准确的信息。     

炼铝质量数据多维分析与统计过程控制系统的设计与实现

针对炼铝生产质量管理与控制技术手段落后的现状,研究数据多维分析与统计过程控制(SPC)理论及应用,通过将SPC技术的分析对象从原始数据扩展到包含多维分析数据,提出了一种基于多维分析与SPC融合的新方法,开发出炼铝质量数据多维分析与统计过程控制系统.在实际应用中,利用系统能够及时监控和分析生产过程中的异常波动,并掌握整个部门生产状况及变动趋势.     

工业炉热平衡计算数学模型

本文介绍了应用计算机进行热平衡计算的优点,简述了工业炉热平衡数学模型建立过程。并介绍了求算连续式加热炉热平衡的程序框图、计算原始数据、计算结果及其分析,同时给出了计算源程序。     

一种函数型数据系统聚类分析方法应用

提出了一种函数型数据的距离定义,分析了该距离与欧氏距离的关系,并给出一种函数型数据的系统聚类分析方法和具体算法,以及在低维空间对原始数据进行直观表达的方法.采用实证研究表明,该方法可以直观、有效地实现函数型数据的系统聚类分析.     

过程控制系统在不锈钢轧钢厂的应用

以泰钢不锈钢轧钢厂炉卷生产线为背景,介绍了二级过程控制系统的结构。描述了过程控制的原始数据输入、规程计算、现场数据采集等主要功能,从数据流向的角度说明了过程控制系统的应用。该系统应用后,产品的整体质量得到了显著提升,成品带钢纵向中间厚度公差为±0.03 mm,头尾厚度控制精度为±0.06 mm。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.     

Seven Rare Earth Projects Involving Close to 3 Billion Yuan Investment Landed In the HighTech Zone

正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully.