300 MW机组变压运行方式的研究

针对300 MW机组运行经济性问题,通过试验测定了不同负荷下定压运行或变压运行时的供电煤耗、热耗、汽耗、汽动给水泵单耗、再热汽温等指标,并进行了对比和分析。结果显示,机组负荷在240 MW以下时采用四阀全开变压运行比较经济。     

带电作业安全距离红外线警报器的研制与应用

针对输电线路带电工作时的安全距离只依靠人工监护掌控,容易造成安全作业出现问题,研制并应用安全距离红外线警报装置,从而避免由于操作人员和监护人员的疏忽和失误可能造成的安全事故。     

弧焊变压器焊接时触电的原因分析及防范措施

阐述了使用弧焊变压器施焊时产生触电的原因,并提出了安全使用弧焊变压器焊接时的措施。希望焊接人员摒弃错误的观念及麻痹思想,高度重视安全用电,确保人身安全。     

Relationships between observed and perceived deviations from normative work procedures

Deviations from anticipated courses of events are often associated with accidents, while the effects of deviations that decrease productivity but do not obviously lead to human injury are less clear. A systemic approach to production and safety is introduced, and it is proposed that production deviations have effects that may lead to safety violations and personal injury. In addition, the relationship between observed and perceived production deviations from 12 senior (60–79 years old) males' routine work using three firewood processing machines is analysed. For simple machine work, perceived deviations were positively related to observed deviations per work cycle and inversely correlated to the perception of work efficiency. For more complex machine work it was more difficult to match observers' and operators' perceptions of deviations. Despite challenges in the production deviation concept, this approach offers a holistic understanding of the performance of human–machine-environment systems and complements assessments of deviations from safe working practice.     

加强过程安全控制 搞好工程安全监理

结合多年工作实践,总结了工业建筑施工安全方面的特点,针对施工过程中的安全监管工作进行了探讨,从制度,安全资料,过程控制等方面归纳了有效进行工程安全监理的经验,以期为同行人士提供指导。     

中美手机用锂离子电池安全要求的分析比较

介绍中美两国手机用锂离子电池的安全要求,并按照环境适应性、机械安全、电气安全、其他安全四部分划分原则,分析比较两个国家手机用锂离子电池安全要求的差异,为今后我国制修订锂离子电池安全标准和出口生产企业提供参考。     

轨道交通安全性标准简介

建立以轨道交通为主的交通系统是改善城市交通的有效途径,其运营工作牵涉到千百万乘客的安全出行,因此．轨道交通系统的安全运行是轨道交通领域亟待解决的问题,该文将简单介绍与轨道交通安全性相关的IEC国际标准、欧洲标准以及国家标准。     

Inrush current estimation and hot-swapping for safe parallel battery pack

ABSTRACT

Batteries used in electric vehicles and microgrid applications use battery modules connected in series to satisfy the voltage required for each system, and battery modules are connected in parallel to increase capacity. In this parallel connected system, in order to disconnect and reconnect a specific battery module or to reconnect a new battery module, the battery module to be newly connected should have a small state of charge (SOC) difference from the existing battery modules. In particular, when a new battery is to be connected under a load current, there is a problem that excessive inrush current may occur in a specific battery module due to the load current distributed to each module and the current due to the SOC difference. Therefore, in this paper, we propose a method of estimating the inrush current through an equivalent electrical modelling analysis for the case where a battery module is newly added in a system in which the battery modules are connected in parallel. In addition, the power management algorithm for the battery pack system with inrush current estimation is presented. The proposed method is validated through simulations and experiments of a battery pack system in which 10 battery modules of 710V and 120Ah are connected in parallel.     

电子信息工程技术的应用与安全管理

文章通过对电子信息工程技术的日常应用及现状分析,得出当下电子信息工程技术发展所遇问题,并从实际需要出发提出相应的安全管理建议,希望能为电子信息工程技术的发展作出贡献。     

LED显示屏光安全及标准化研究

论述了LED显示屏光安全以及干扰光的基本概念,分析了LED显示屏干扰光的成因,对LED显示屏干扰光的标准化工作进行了探讨和研究,并提出LED屏干扰光标准化研究的技术难点,对LED显示屏设计、安装和使用具有一定的现实意义和指导意义.