论送电线路新建工程的施工管理

送电线路新建工程的施工管理包括施工次序管理,如:工程前期报审资料管理;基础施工管理;铁塔但立施工管理等;控制程序管理,如:安全控制和文明生产管理;质量控制管理;进度控制管理等.     

电力通信系统对电网安全的影响及其安全控制策略

现代电力通信在保证电网安全稳定运行中的技术支撑作用意义重大.通过论述电力通信系统对电网安全运行的影响,分析电力通信系统危险点的特征和危险点查找方法,提出在通信网运行维护管理中设备危险点和行为危险点的控制策略.     

送电线路雷害事故分析及防雷措施

架空送电线路雷击故障是影响安全供电的严重问题,本文分析了雷害事故的形式及其原因,提出防雷保护措施,以便可以把送电线路的防雷保护工作做得更好。     

三维激光扫描仪在电网线路分析中的应用

对于规划中的电网线路,通过三维激光扫描测量技术采集和处理的规划沿线数据,为电力线路优化、外业勘测、设计施工提供数据支持与指导。对于已建设电网线路,利用三维激光扫描测量技术采集和处理的电网沿线数据,可以恢复电线实际形状,自动测量电线到地面的距离和相邻电线间距,计算垂曲度、跨度等,实现危险点预警,以便及时调整与维修线路。     

嵩厦220kV送电线路海上N9铁塔冲(钻)孔桩施工技术

论述嵩厦 2 2 0kV送电线路海上N9铁塔若干重要环节施工问题 ,对同类工程施工提出几点建议     

220千伏元乌、乌大、大东送电线路运行情况分析

对220千伏送电线路运行中线路沿线地质、气象基本情况以及运行中出现的问题进行了分析.如:拉猫塔(LM)拉线松弛分析与风速;风沙对塔基础和拉线的危害及防止风蚀方法;洪水对送电线路的危害及预防措施;鸟类对送电线路危害及预防措施;赤峰地区送电线路历年登杆检查的经验.     

迪尼玛玻璃钢防护网在带电跨越施工中的应用

针对送电线路工程施工中新建电力线路与各种电压等级电力线路(尤期是500kv主干网)需实现不停电跨越的要求,介绍了采用在新建铁塔上安装钢支撑杆,在两支撑杆架设迪尼玛承力绳及绳间布置玻璃钢防护网进行跨越施工的方法。     

送电线路管理信息系统

本文介绍基于客户/服务器技术、地理信息系统技术以及面向对象的分析和设计技术开发的送电线路管理信息系统SDXL。SDXL在WINDOWS NT、SQL SERVER和OFFICE97环境下,用VISUAL BASIC开发实现。文中着重阐明了系统设计的原则和系统目标、系统结构、系统功能和系统的主要实现技术。该系统使送电线路生产管理实现了计算机化,显著地提高了工作效率和水平。     

高压输电线路导线跌落非线性动响应分析(英文)

为了研究机械性故障对高压输电线路耦合体系的受力影响,建立了输电线路耐张段的非线性耦合体系模型,通过导线找形非线性静力计算确定了耐张段的初始平衡状态.采用瞬态动力分析方法计算了导线、绝缘子破坏失效危险工况下的输电线路耦合体系非线性动响应.分析结果表明,上横担一组导线断裂失效对邻近端导线张力没有明显影响,对邻近端的绝缘子及铁塔横担构件的受力有较大的影响;上横担一组绝缘子破坏失效后,破坏档未破坏端导线的张力超过了技术规程中的设计值;导线的跌落对破坏档未破坏端的上横担绝缘子受力有较大的影响,而对上横担铁塔杆件没有明显的影响;在架空送电线路的设计中应该考虑绝缘子断裂的荷载工况.研究成果可为输电线路结构设计提供理论依据.     

基于LabVIEW高压线路测温系统的设计

为及时准确地掌握高压线路温度数据,提出了一种基于LabVIEW的高压线路测温系统,系统设计主要包括高压线路测温节点、Sink节点和采用LabVIEW编写的监控软件等。由测温节点测得的温度数据,以自组织的方式构成无线传感器网络,经Sink节点传输至计算机进行数据显示、处理和分析。利用该系统,不仅可以消除高压线路的故障隐患,而且可取代传统的人工巡检高压线路的方式,对保证电网安全运行和改善电力系统的工人劳动条件具有一定的实用价值。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.