螺杆式空压机的变频节能改造

针对空气压缩机存在用电量大、噪音大、自动化程度低等问题,采用压力变送器、AI人工智能调节器、变频器对螺杆式空气压缩机进行节能改造。改造后空压机节能效果显著,自动化程度高,具有很强实用性和推广意义。     

基于PLC变频调速的空压机控制原理与节能研究

本文提出了基于PLC变频调速的空压机控制原理,探讨其节能方法,评价其节能效果。着重介绍了西门子MM440变频器、S7-300PLC在攀钢集团特种铁合金公司空压机站改造中的应用情况。现场运行情况表明,往复式空压机采用西门子MM440变频器进行调速节能的改造是成功的,节能效果及控制原理明显,引入PLC控制可大大提高系统的自动化程度和使用灵活性,降低故障率,减少操作员的劳动强度。     

空压机在站场中的节能优化探讨

空压机是压气站气动系统的核心设备,随着站场管线输量的不断增加,站场安全生产准则的不断提高,空压机的节能运行改造将势在必行。选取了新老管线存在下的目的站场中空压机进行研究,阐明其高能耗原因,关注其实际工作状态,最终给出合理节能改造方案和节能效果分析。     

空压机余热应用实例

对空压机余热的利用不仅可以改善空压机本身的工作性能,而且可以变废为宝,节省能源,减少污染物排放。文章结合实际改造工程,对空压机余热用于生产洗浴热水的可行性进行了分析,并提出了具体项目的改造方案,最后比较了项目改造前后系统的经济性指标和节能效果,结果显示改造项目不仅可以改善空压机的工作性能,而且具有良好的经济性和节能性。     

空压机系统节能优化

分析了某电子管厂空压机系统运行状况，寻找节能潜力，提出经济运行方案。     

变频技术在大功率交流异步电动机驱动空压机中的应用

介绍了传统空压机控制现状及变频技术的工作原理,阐述了变频技术控制大功率交流异步电动机驱动空压机的改造方案,并给出了改造的实施方法,为大功率交流异步电动机空压机节能控制改造和安全运行提供了经济实用的方法.     

空压机系统节能改造案例分析

某企业空压机系统共配置10台132 kW风冷式喷油螺杆空压机,因机组使用年限长、老化磨损严重,实测单机能耗指标超出国家标准限定值,且系统未配置余热回收装置、机组群控系统,空压站运行电耗与先进值比存在差距。主要针对空压机普遍存在的用能问题进行系统分析,提出空压机系统节能改造方案。     

基于PLC的水电站空压机控制系统

论述了水电站自动化技术的发展对水电站空压机控制系统提出的要求。详细介绍了一种符合系统需要的PLC控制系统的硬件组成和主要软件的实现方案,为水电站空压机控制系统的设计、选型、安装等提供了应用实例。     

上海空压机系统能效现状及节能对策

介绍了几种常用的空压机系统节能技术,并通过对上海工业领域空压机系统能效现状调研,提出空压机系统的节能思路。     

空气压缩机的自动化控制及节能

空气压缩机的自动化控制及节能福建省煤炭工业设计院刘闽生空气压缩机（简称空压机）是煤矿主要动力设备，耗电量约占煤矿总用电量的８％～１０％。用压缩空气做动力的风动设备一般效率都比较低，所以空压机的运行方式恰当与否，对安全生产和节约能源都有十分重要的意义。...     

An approach for model-based energy cost analysis of industrial automation systems

Current energy reports confirm the steadily dilating gap between available conventional energy resources and future energy demand. This gap results in increasing energy costs and has become a determining factor in economies. Hence, politics, industry, and research focus either on regenerative energy resources or on energy-efficient concepts, methods, and technologies for energy-consuming devices. A remaining challenge is energy optimization of complex systems during their operation time. In addition to optimization measures that can be applied in development and engineering, the generation of optimization measures that are customized to the specific dynamic operational situation, promise high-cost saving potentials. During operation time, the systems are located in unique situations and environments and are operated according to individual requirements of their users. Hence, in addition to complexity of the systems, individuality and dynamic variability of their surroundings during operation time complicate identification of goal-oriented optimization measures. This contribution introduces a model-based approach for user-centric energy cost analysis of industrial automation systems. The approach allows automated generation and appliance of individual optimization proposals. Focus of this paper is on a basic variant for a single industrial automation system and its operational parameters.     

煤矿自动化的发展趋势研究

中国能源储备结构的特点是少油、缺气、富煤,这决定了在未来时间内,煤炭依然是中国重要的能源类型,其在能源结构中占据主导作用。随着中国经济的发展及可持续技术的不断进步,矿业自动化的发展已经成为现阶段煤矿企业发展的重点。结合笔者多年相关工作经验,详细论述中国煤矿自动化的发展趋势研究。     

Energy cost of living, 1972–1973

The total energy requirements of household consumption of all goods and services have been calculated. Source for consumption data is the 1972–1973 Bureau of Labor Statistics (BLS) Consumer Survey. These are converted to energy terms using input-output energy intensities. The dependence of household energy use on expenditures, number of household members, degree of urbanization, and other demographic-economic factors, has been investigated graphically and statistically. The major factor determining energy requirement is expenditure level, but this can be affected by up to about 15% by variation in the other factors. In agreement with previous work based on the 1960–1961 BLS Survey, we find that

1. (1) the dependence of total energy requirements on expenditures shows a tendency to saturation;

2. (2) about one-half of the total energy of the average household is a result of the purchase of fuels and electricity while the other half results from the purchase of non-energy commodities.

Application to the analysis of an energy tax and rebate program is discussed briefly.     

卷烟生产企业能源管理系统开发与应用

卷烟生产企业的节能减排形势日趋紧迫,结合自动化技术和信息技术的能源管理系统建设可促进卷烟生产企业的进一步系统节能,具有显著的节能效果。介绍了卷烟生产企业能源管理系统的设计原则、总体构架及系统功能模块。能源管理系统运行以来,卷烟生产中单位产品综合能耗下降了30%,对其他卷烟厂的能源管理系统建设具有一定参考价值。     

On IEC 61850 communication networks in smart grids system: Methodology of implementation and performances analysis on an experimental platform

The increasing installation of distributed energy resources during the last years has led to a fundamental change in the power system structure. As a consequence, utility operators are faced with new challenges in grid planning and control. The consideration of smart grids show promising results in increasing the hosting capacity for distributed and renewable resources. Standardized automation, control, and communication systems are important keys to realize such intelligent methods. This paper focuses on a deployment methodology of IEC 61850 on an experimental platform for smart grid system. We were interested in evaluating the performance of the GOOSE communication. A standard-based communication approach for distributed energy resources is introduced and implemented. It uses the IEC 61850 interoperability approach as well as the GOOSE communication for distributed automation. The implementation methodology is provided to handle the hierarchical architecture of distributed control applications. In order to show the advantages of the proposed methodology, a combined analytical and experimental approach is demonstrated for evaluation of GOOSE communication performances.     

综合自动化管理系统在某机场二次供水泵站的应用

某机场目前二次供水设备存在设备老化严重、设备运行工况无法实时监控、设备自动化程度低等问题,为此通过技术改造,安装1套综合自动化管理系统,对反映设备运行工况的各项参数进行远程监控,实现对多台水泵轮换运行的自动控制、变频调速、恒压供水,对消毒液及进水进行自动控制,采用高精度数字化仪器仪表对水压、水位、流量、加药量等参数进行精确测量,极大地提高了工作效率和自动化程度。     

工作面电牵引采煤机控制系统优化分析

煤矿井下回采作业自动化程度对整个矿井生产综合效益的获得有着不可替代的积极意义。而电牵引采煤机作为矿井回采不可或缺的关键设备,加强对其的自动化探究十分必要。以此为着手点,针对工作面电牵引采煤机控制系统优化开展探究,在分析现有电牵引采煤机使用不足的基础上,针对采煤机控制系统优化方案开展设计探究,在此基础上对所设计系统开展试验论证分析,并对其应用效果做出分析,希望能为其他矿井自动化水平的提升提供帮助。     

生物质成型系统一体化和自动化设计

为了实现生物质成型系统一体化和自动化运行、降低能耗、提高产率,对生物质成型设备进行了合理配置和整合。采用控制理论和技术,根据进料量、粉碎量、供热量、出料量、物料含水率等条件变化,对生物质成型设备进行自动化设计。实现了生物质成型燃料系统生产过程连续稳定,提高了设备的集成化水平,减少了人工操作,降低了能耗及生产费用。生物质干燥过程采用生物质热风炉提供热量,实现了能源的自循环利用。一体化和自动化的生物质成型系统燃料生产电耗小于100 kWh/t,人工费不超过100元/t,为生物质的规模化利用提供了较为合理的途径。     

Automatic management of energy flows of a stand-alone renewable energy supply with hydrogen support

This work deals with the design and construction of an automation system for controlling the electric energy flows that take place at the continuous current bus (DC Bus) of a wind–solar system with hydrogen support. The automation system is based on a Siemens PLC s7_313C_2DP. This PLC was equipped with a Micro Memory Card (MMC) of 2 MB in order to allow the massive storage of data related to the control and monitoring of the test-bed. This system has to perform the required switching between the components of the hybrid electric energy generator. These elements are: photovoltaic generator, wind-turbine generator, fuel-cell system, and electrolyzer.     

Determinants of the success and sustainability of Bangladesh’s SHS program

Large numbers of households in rural areas in Bangladesh have no access to electricity. Providing these households with electricity by extending the country’s already overloaded grids is neither an economically nor a technically feasible option. Rural electrification strategies therefore, by necessity, need to rely on stand-alone generation systems. One of these is solar home systems (SHS) and the SHS program developed and implemented in Bangladesh has been highly successful, with very large numbers of rural households now participating in the program. What makes the program’s success most remarkable is the fact that it targets households with very low incomes using a purely market-based approach. Those participating in the program pay the full, unsubsidised cost of their SHS using a micro-credit loan facility and are charged high interest rates. Understanding the reasons behind the success of the Bangladeshi program therefore holds potentially valuable lessons for SHS programs being implemented in other developing countries. A comprehensive qualitative and quantitative survey was used to find those factors perceived by program stakeholders as being most critical to the program’s success to date and the factors considered most likely to impact on its future success. The two primary reasons for the program’s success were perceived to be its strong focus on meeting householders’ needs and on its ability to make the solar home systems as affordable as possible. The continued success of the program was considered likely to be determined by a variety of factors, including the ability of program implementers to control increases in the cost of SHS, to maintain the quality of SHS and components and to increase program loan recovery rates, the degree to which the program is integrated into national, energy policy, and the degree to which local banks become involved in the program.