浅谈电力行业金属监督质量管理的优化

如何通过金属监督质量管理的优化创新来更好地服务当前电力设备材料等级越来越高的需求,已经成为目前电力行业内金属监督质量管理工作面临的一项挑战性课题。文章主要分析了现阶段电力行业金属监督质量管理工作中普遍存在的问题、不足和难点,并明确金属监督质量管理工作的基本要求,最后提出了金属监督质量管理工作优化的相关措施,对电力行业金属监督质量管理工作提供有助益的参考。     

地区电网新能源消纳困难时段研究

文章主要研究了某实际电网新能源消纳困难时段。通过负荷特性分析,得出地区电网低谷负荷出现季节和典型日负荷特性,通过风电场、光伏电站出力特性分析,得出风电、光伏季节分布特性及日出力特性。在地区电网新能源消纳的困难时段分析基础之上,对困难时段负荷概率进行统计,得出困难时段的负荷取值,为新能源接纳能力分析提供重要的数据支撑。     

电网省地县调数据一体化管理平台建设

在电网调度运行的实际生产中,需要综合多个业务系统中的数据,并从中挖掘出有价值的电力运行信息。当前,省地县调度业务多通过调度电话或者邮件联系,同时业务系统分布在不同安全分区,缺乏有效的管理措施。文章阐述了电网省地县调度数据一体化管理平台,其具备提供数据收集、存储、自定义报表、数据加工等功能,使省地县调的纵向数据传输能力得到显著改善。     

Local distributions of electricity demand

A simple model for how electricity use might be distributed over space is developed and solved. The model depends on a simple characterization of “heat islands”, and considers summer cooling use in particular. Various technological changes to allow for electric grid use of renewable energy and other technologies, such as energy efficiency and hydrogen or electric vehicles, change the outcome of this model, and produce a “saddle”, not necessarily a “duck curve”. Inequality in income and wealth drives these results, and policies to ameliorate or remove these effects will have to be and be seen as fair to those of various income levels and locations.     

A blueprint for capturing grid value in a decentralized electricity sector

This study addresses the question of how the electricity grid can best be priced, in the context of disruptive technologies, increasing decentralisation of the power sector and new business models. The emergence of business models can affect the design of tariffs, but at the same time, tariff design can trigger new business models as they can nudge adoption towards certain technologies. Network tariffs have traditionally been established using a cost accounting method. Due to its cost structure, network tariffs are second best constructs, as marginal cost pricing does not lead to cost recovery. Second best solutions, in all probability, will overcompensate some inputs which in turn will be overused (the Averch-Johnson effect). New distributed energy technologies that perform better in these overcompensated inputs will therefore see a higher penetration in the market. Penetration of some technologies over others in a previously monolithic vertically integrated power sector will open up new customer needs and therefore business opportunities. Each resulting business opportunity would make use of the grid differently from which it was originally conceived, and at one extreme, they can bypass it altogether. We provide a framework of analysis that leads to the pricing of the services provided by the electricity grid for each new business opportunity.     

铸件退火炉烟气余热的回收利用装置

提出了HTAC技术的新结构,即铸件退火炉烟气余热的回收利用装置,以期提高热效率、节约能源并减轻污染。     

上部单烧嘴长坑均热炉改造试验研究

介绍了在上部单烧嘴长坑均热炉上，通过采用增加辅助烧嘴和辐射多孔体的改造措施，使炉温均匀，加热质量提高，并实现了节能降耗。     

热处理对多孔铝合金压缩吸能性能的影响

采用渗流铸造工艺 ,制备了Al Si系多孔铝合金 ,讨论了其压缩变形特征及能量吸收性能 ,分别对ZL10 1、ZL111两种多孔铝合金进行T6热处理 ,研究了热处理对这两种多孔铝合金压缩吸能性能的影响。研究结果表明 ,热处理能够提高多孔铝合金的能量吸收能力 ,对屈服强度及能量吸收效率也有显著的影响 ,为提高多孔铝合金的压缩性能 ,应尽可能施行热处理     

Study on Surface Engineering of Normalized Steels Subjected To Machine

Engineering the surfaces of components to improve the life and performance of parts used in automotive and aerospace engineering is the active area of research. Suitable Thermal/Mechanical/Thermo mechanical surface engineering treatments will produce extensive rearrangement of atoms in metals and alloys and corresponding marked variations in Physical, Chemical and Mechanical properties. Among the more important of these treatments are heat treatment processes such as hardening by Quenching, Induction hardening and Case Carburizing which rely on phase transformations to produce desired changes in mechanical properties. Other processes where phase transformation occur are casting, welding and machining etc. [1] Phase transformation may be homogeneous or heterogeneous. Homogeneous involves rearrangements in the structure of the material taking place simultaneously in all parts of the solid, while the heterogeneous transformation involves structural changes which are more localized. Alternatively they could be called as Isothermal and Nonisothermal transformation. But irrespective of the classification, these transformations alter the structure of the material giving rise to changes in the mechanical and physical properties of the processed material. It is of interest to review some consequences of surface modification in isothermal (Normalizing) and nonisothermal transformations (Machining) of low carbon steels.     

蠕铁件质量数据管理与分析系统的建立与应用

应用VisualFoxPro 6 .0和MicrosoftGraph 2 0 0 0软件 ,根据工厂实际生产 ,开发了蠕铁质量数据管理与分析系统。该系统建立了九类铸件质量数据分类管理的数据库 ,能快速、准确地进行添加、查询、修改和删除数据 ;利用柱形图等图形工具直观地显示数据统计分析的结果 ;能够快速、方便地生成各类不同格式的报表。该系统经过实际使用 ,达到了预期的目标 ,取得了良好效果。