SCADA系统在污染物治污工况在线监控系统中的应用

本文介绍了SCADA系统在内蒙古自治区重点污染源治污工况在线监控系统中的应用,系统以西门子成熟S7—200系列可编程序控制器为在线监测设备,基于OPC（OLE for Process Control）技术,以WINCC为监控平台,实现了自治区内重点污染源企业治污工况的远程监测、污染物排放的有效管理。     

Colonial公司原油管道泄漏事故原因分析及启示

介绍了一起在美国南卡罗来纳州发生的原油管道泄漏事故，分析了事故的主要原因，并对我国原油管道的维护管理提出建议。     

Pipeline leakage detection and isolation: An integrated approach of statistical and wavelet feature extraction with multi-layer perceptron neural network (MLPNN)

Leakage diagnosis of hydrocarbon pipelines can prevent environmental and financial losses. This work proposes a novel method that not only detects the occurrence of a leakage fault, but also suggests its location and severity. The OLGA software is employed to provide the pipeline inlet pressure and outlet flow rates as the training data for the Fault Detection and Isolation (FDI) system. The FDI system is comprised of a Multi-Layer Perceptron Neural Network (MLPNN) classifier with various feature extraction methods including the statistical techniques, wavelet transform, and a fusion of both methods. Once different leakage scenarios are considered and the preprocessing methods are done, the proposed FDI system is applied to a 20-km pipeline in southern Iran (Goldkari-Binak pipeline) and a promising severity and location detectability (a correct classification rate of 92%) and a low False Alarm Rate (FAR) were achieved.     

城市燃气管网的地震紧急处置系统研究

燃气管网的地震破坏有时会导致火灾、爆炸等严重的次生灾害。城市中的燃气管网系统若能具备地震紧急处置功能,在地震来临时及时采取自动关闭燃气供应阀门等紧急处置措施,可以避免或减少此类次生灾害的发生。介绍了普遍用于燃气管网日常调度管理的SCADA系统的组成与工作原理,探讨了在SCADA系统中加入地震紧急处置功能的可行性,并基于ArcGIS地理软件,通过VBA二次开发编制了燃气管网的地震紧急处置模拟程序,为燃气管网地震紧急处置系统的实现提供了一定依据。     

在役储运装置安全控制系统改造要求

基于对国内在役储运装置(大型储油罐区、站场、长输管道)安全控制/管理现状调研分析,并结合国际国内标准IEC61508和IEC61511(GB/T20438和GB/T21109)及国外石油公司良好的工程实践,开展在役储运装置安全控制系统可靠性研究,制定适应于储运装置成套的安全控制方案,形成在役储运装置安全控制系统设置/管理要求。     

Fluid bed gasification – Plasma converter process generating energy from solid waste: Experimental assessment of sulphur species

Often perceived as a Cinderella material, there is growing appreciation for solid waste as a renewable content thermal process feed. Nonetheless, research on solid waste gasification and sulphur mechanisms in particular is lacking. This paper presents results from two related experiments on a novel two stage gasification process, at demonstration scale, using a sulphur-enriched wood pellet feed.Notable SO₂ and relatively low COS levels (before gas cleaning) were interesting features of the trials, and not normally expected under reducing gasification conditions. Analysis suggests that localised oxygen rich regions within the fluid bed played a role in SO₂’s generation. The response of COS to sulphur in the feed was quite prompt, whereas SO₂ was more delayed. It is proposed that the bed material sequestered sulphur from the feed, later aiding SO₂ generation. The more reducing gas phase regions above the bed would have facilitated COS – hence its faster response. These results provide a useful insight, with further analysis on a suite of performed experiments underway, along with thermodynamic modelling.     

污水处理SCADA系统中的GSM通讯

针对污水处理系统的特点与要求,探讨了SCADA系统中使用的GSM无线通讯网络,对其典型的两种数据传输模式(利用PPP协议拨号上网的GPRS无线数据分组业务及GSM短消息业务)分析了数据传输方式、通讯流程及两种模式的优缺点。并在上海松江东西部地区分别实现了这两种传输方式,效果良好。     

SCADA系统安全联锁误动作原因分析及改进方法

介绍了临濮线SCADA系统升级改造后,在对系统进行现场功能测试时,发现SCADA系统安全联锁保护产生误动作现象,从系统处理方法、系统回路和运行环境3个方面,结合SCA-DA系统的组成原理及现场实际情况分析了产生误动作的原因及处理方法,通过对相关数据和设备的整改,解决了系统的误动作问题,确保了系统的安全、可靠运行,提高企业经济效益。     

SCADA技术在城市排水管理中的应用

对数据采集与监控系统(SupervisoryControlandDataAcquisition)技术的原理进行了介绍,对排水管网SCADA系统功能进行系统分析,并根据实践经验对SCADA系统的建立和应用提出了一些建议。     

浅谈SCADA系统在污水处理厂中的应用

SCADA（数据采集与监视控制）系统是目前绝大多数污水处理厂实现现代化管理的控制技术,本文以已投入运营的珠海拱北污水处理厂为例,论述了SCADA技术在污水处理厂中的应用。