高速公路配电安全数字监测技术探究

随着高速公路供配电设备的运行年限不断增加,高压柜、低压柜、电容柜、电缆接头、供电电缆等不断老化。高速公路位置偏远、环境恶劣、人烟稀少等诸多原因,造成了检修不便。因此,对高速公路配电系统进行全程数字监测格外重要。配电安全数字监测技术从供配电安全出发,对高速公路配电系统进行数字化、可视化、精细化管理,从经验判断转变为数字感知,形成具有神经元感知体系的全过程技术链。     

配电安全在线监测系统

随着高速公路建设里程的不断增加,前期建设的收费站、服务区、隧道等大功率配电设施,如变电所、箱变、电缆运营年限也不断增加,势必造成绝缘材料老化,设备故障频发,为消防火灾埋下隐患,如不及时将隐患消除,必会引发各类故障和事故,影响行车安全,甚至造成社会影响。配电安全在线监测系统是一种新型的技术检测手段,可以有效将事故提前预判,实现了事前控制的预控手段。配电安全在线实时监测及预警的研究课题有很重要的现实意义。     

“时代”之路

时代集团公司成立于1984年，是一家高新技术企业。经过二十多年的不懈努力，目前已发展成为一个拥有15亿元资产、40余家分公司及2家海外分支机构，涉足检测仪器、焊接设备、智能型变频器、配电自动化、应用软件五大领域的高科技产业型经济实体。     

高速公路机电外场设备电力监控系统

监控外场设备配电系统是高速公路外场设备发挥效能的基本保障.目前,外场设备普遍采用通过由备收费站变电所敷设电力电缆对沿线道路监控设备进行供电,针对外场设备配电设置电力监控系统,能保证快速安全地恢复监控外场设备供电,保障设备高效、安全的运行,从而提高道路通行能力,提升道路服务水平.     

浅析《大型公路桥梁中压配电系统技术条件》行业标准

<正>中华人民共和国交通运输部行业标准《大型公路桥梁中压配电系统技术条件》JT/T 823-2011,经过编写组3年的修改与制订,于2011年11月28日发布,2012年4月1日正式实施。该行业标准经过交通运输部科技司审核,列入2009年12月份下达的《关于下达2009年交通标准化补充计划的通知》(交科发[2009]800号)中第59项任务计划,由中国公路学会桥梁和结构工程分会提出并归口,江苏中压电气工程有限公司、中交公路规划设计院有限公司、江苏省交通规划设计院有限公司、扬州大学共同制订。该标准是该编写组深入调查研究,广泛收集国外道路照明中采用的中压配电系统要求的相关材料,结合国内外在室外照明中采用的低压配电系统要求,总结我国大型公路桥梁长距离分散性负荷中压配电系统成功经验的基础上制定。     

地下配电网设计中地埋式变压器的应用

地埋式变压器是新一代配电可靠、高效、低耗的绿色环保型组合式变压器.目前,国内在选择常规配电方案时,多采用油浸变压器、干式变压器和箱式变压器,这三类变压器,由于容量选择偏大,低压500～600M范围配电网带来了可靠性差,电缆截面粗、施工难度大,降压变电站数量多、一次性投资大等问题.     

高速公路PMCS系统的实现

在高速公路供配电系统中，变配电所往往地处隧道等偏远场所，日常巡视维护不是很方便，所以提高高速公路变配电系统管理效率的需要与日俱增，而传统的管理模式和监控层面已经远远不能适应供电系统高密度、大容量运转的需求，尤其是发生事故的情况下，变配电值班人员对全系统的运行状况做不到全面、实时、准确的掌握，只能派遣值班员到现场检查报告才能进行指挥和调度，很可能由于没有及时了解系统运行情况而导致故障连锁反应，使故障区域扩大，影响隧道的正常运行。高速公路配电智能监控系统和电能质量在线监测系统（PMCS系统）可以很好地这些问题。     

科士达：中国动力，守护高速公路供电安全——科士达创新推出高速公路综合通用供电及整体机房解决方案

在高速公路安全不间断运行越来越受到社会各方重视的今天．高速公路建设中以通信，监控，收费，供电为核心的机电系统应用创新也成为业内厂商共同关注的焦点。其中，作为保障整个高速公路机电系统正常运行的基础子系统供电系统无疑担负着至关重要的作用。2006年科士达公司在业内率先推出针对高速公路应用环境的“综合通用供电解决方案”（方案见下图）．全面整合UPS、输入输出配电，NPS智能稳压。NPLS智能照明、防雷、监控等在内的环节，提高用户供电系统的可靠性和客灾能力．降低系统故障率．降低用户系统总体拥有成本．     

从雪峰山隧道供电设计谈特长高速公路隧道供电的特点

雪峰山隧道工程概况 雪峰山隧道位于邵阳市与怀化市交界区域的雪峰山脉，是上瑞国道主干线湖南省邵阳至怀化高速公路的控制性工程。该隧道为上下行分离的双洞双车道隧道，左线隧道长6,946M，右线隧道长6,956M。雪峰山隧道设有完善的通风、照明．消防、监控和供配电设施，见图1。     

中压供电技术在沪宁高速公路的应用

沪宁高速公路(江苏段)东起苏沪交界的安亭,西止于南京马群,全长越248km。为了满足日益增长的交通要求,保持沪宁高速的形象地位以及更好的发挥其交通主动脉的功能,进行了沪宁高速公路(江苏段)的扩建工程。扩建后双向八车道的沪宁高速在沿线增设了可变情报板、摄像机、车辆微波检测器等外场设备,更在互通区域增加了高干灯照明设施。给这些设施供电必须考虑许多问题,如长距离的配电线路,分散于配电线路上的小容量负载,保证设备良好运行的允许偏差,运行成本的节省等,而中压供电技术则是解决这些问题的一个较好的方式。     

畅销书作家掀办刊热潮

10月20日，《盗墓笔记》作者南派三叔，携其最新创办的《超好看》杂志到成都举行签售活动并与读者交流。     

“白领”的生存

年轻“白领”既面临“完成不足”的困扰，还缺少自我奋斗的能力和愿望。他们遇到的问题，值得我们关注。     

实体书店的末日渐近？

实体书店的大旗能不能一直撑下去，这并不仅仅是书店本身的问题。重新理顺出版、印刷、零售的利益分配关系，行业标准和行业规范的建立，国民读书热情的拯救，国家政策的扶持都是至关重要的因素。     

Graph-Based Entropy for Detecting Explanatory Signs of Changes in Market

Graph-based entropy, an index of the diversity of events in their distribution to parts of a co-occurrence graph, is proposed for detecting signs of structural changes in the data that are informative in explaining latent dynamics of consumers’ behavior. For obtaining graph-based entropy, connected sub-graphs are first obtained from the graph of co-occurrences of items in the data. Then, the distribution of items occurring in events in the data to these sub-graphs is reflected on the value of graph-based entropy. For the data on the position of sale, a change in this value is regarded as a sign of the appearance, the separation, the disappearance, or the uniting of consumers’ interests. These phenomena are regarded as the signs of dynamic changes in consumers’ behavior that may be the effects of external events and information. Experiments show that graph-based entropy outperforms baseline methods that can be used for change detection, in explaining substantial changes and their signs in consumers’ preference of items in supermarket stores.     

The Effects of Proposals for Basic Pension Reform on the Income Distribution of the Elderly in Japan

The aging of the population in Japan is a serious problem, and the reform of the public pension scheme is a major political issue. Although the 2004 pension reform was enforced to ensure a sustainable pension system in such an aging society, people remain quite apprehensive about the pension system. Consequently, various sectors have created new proposals for pension reform to overcome these problems, and it has become a recent policy debate. The objective of this article is to prepare projections for the income distribution of households containing elderly people using the Japanese microsimulation model, INAHSIM (Integrated Analytical Model for Household Simulation), and to evaluate the effect of the proposals on the living standards of the elderly. According to the simulation results, the problem of very low pension amounts for the elderly does not appear to be growing. However, changes in co-resident families of the elderly, such as the increase in the number of people living alone, may cause a decline in their standard of living. The author points out the problems of the previously proposed reform plans and proposes an alternative reform plan based on the perspective used in this paper.     

A Microsimulation Model for Projections of Japanese Socioeconomic Structure

The Integrated Analytical Model for Household Simulation (INAHSIM) is a microsimulation model for the Japanese population that was first developed in the 1980s as a tool for household simulation. This study attempted to improve the conventional INAHSIM in order to construct a more comprehensive alternative that incorporates a larger number of social and economic elements. It also overcame the problem for simulation—the lack of kinship relations in the initial population—by imputing parent-child relationships between those parents and children who do not live together. This paper provides an overview of INAHSIM and adds certain details of the imputation that is essential for simulating the life event of “adult children resettling to care for their aged parents.” In addition, I will show the importance of the said life event in Japan by comparing the difference in the family type of elderly people between its future distribution with or without this life event. Finally, I will discuss the future possibilities for research on microsimulation models that will play an important role in policy making.     

雍和园 文化和科技融合的璀璨华章

针对东城区及雍和园区域特殊的历史和人文环境,雍和园因地制宜,突破了传统科技园区以招商引资为生命线的扩张型发展模式,走出了一条通过内部循环更新实现发展的新路径。将文化创意产业打造成为连接文物古迹、胡同风貌和工业遗存的纽带,激发创新创意活力,促进了城市文化自身的有机更新。     

Personal Authentication Using a Kinect Sensor

This article proposes a new approach to personal authentication by exploring the features of a person’s face and voice. Microsoft’s Kinect sensor is used for facial and voice recognition. Parts of the face including the eyes, nose, and mouth, etc., are analyzed as position vectors. For voice recognition, a Kinect microphone array is adopted to record personal voices. Mel-frequency cepstrum coefficients, logarithmic power, and related values involved in the analysis of personal voice are also estimated from the voices. Neural networks,support vector machines and principal components analysis are employed and compared for personal authentication. To achieve accurate results, 20 examinees were selected for face and voice data used for training the authentication models. The experimental results show that the best accuracy is achieved when the model is trained by a support vector machine using both facial and voice features.     

羊：求福祈祥与情色狂欢

羊以它的无辜的生命作为代价,为爱情和婚姻,为友谊和亲朋,为团结和民族,为神佑和人类,求福祈祥。