学术论文百科

智能电网论文题目大全高中英语作文

发布时间:2024-07-06 17:26:00

智能电网论文题目大全高中英语作文

Power shortage a serious impediment to the development of the national Experience around the world shows that the pace of development of electricity production should be higher than the growth rate of other sectors, in order to promote the coordinated development of the national economy, so the electric power industry has been called an economic ""  If China's economic development is likened to the "body", then the power engineering construction is undoubtedly support the body flexible movement "" How can I ask a healthy body able to leave strong bones it? Continuously push forward the construction of power like the bones provides unlimited energy, plenty of energy supply is a strong guarantee for the effective functioning of the body of the   2012, by the world economic recovery is slow and the impact of domestic macro-control, China's economic growth continued decelerating trend, the annual GDP 9322 trillion yuan, calculated at comparable prices, an increase of 8% over the previous Since 2000, China's power consumption, the production rate has been higher than GDP growth, which makes electricity (production, consumption) long-term elasticity coefficient greater than 1, so that the energy consumption per unit of GDP has been difficult to come down, indicating that the strong momentum of China's electricity consumption   "Twelve Five" will be a key period for China's development mode transformation of electricity, power companies have to seize the opportunity to accelerate the innovation and development, adhere to conservation priority, a priority to develop hydropower, optimizing the development of coal, to develop nuclear power, and actively promote new energy generation, moderate development of gas central power, local conditions to develop distributed generation, to accelerate the construction of a strong smart grid, promote the development of the equipment industry, and promote the harmonious development of the "Twelve Five" period, the country's electricity industry investment will reach 3 trillion yuan, than the "Eleventh Five" increased by 68% Aspects of power project construction, "Twelve Five Year Plan" power investment of about 75 trillion yuan, accounting for 52% of all electricity By 2015, the national power generation capacity will reach 437 billion kilowatts, an average annual increase of 5% Among them, water is 284 million kilowatts, 41 million kilowatts pumped storage, coal 933 million kilowatts, 43 million kilowatts of nuclear power, natural gas power 30 million kilowatts, 100 million kilowatts of wind power, solar power 2 million kilowatts, biomass power generation and other 300 million   Power grid construction, "Twelve Five Year Plan" grid investment of about 55 trillion yuan, accounting for 48% of total electricity In 2015 the country will form the north, east and central China UHV power grid as the core of the "three vertical and three horizontal" main Ximeng, Mengxi, Zhangbei, North Shaanxi energy base by three longitudinal UHV transmission channel to the north, east and central China, northern coal, Southwest Water through three lateral UHV access to the north, central and Yangtze River Delta UHV power transmission   The rapid development of power engineering construction and reasonable structure for China's economic development provides a strong guarantee, robust "bones" to promote the sound and rapid development of national   电力不足严重阻碍着国民经济的发展。世界各国的经验表明,电力生产的发展速度应高于其他部门的发展速度,才能促进国民经济的协调发展,所以电力工业又被称为国民经济的“先行官”。  如果把我国的经济发展比作是“身体”,那么,电力工程建设无疑就是支撑身体灵活运动的“筋骨”。试问一个健康的身体怎能离得开强健的筋骨呢?电力工程建设的不断推进就像是为筋骨提供了无限的能量,充沛的能量供应是身体各项机能有效运作的有力保障。  2012年,受世界经济复苏缓慢和国内宏观调控的影响,我国经济增长延续减速态势,全年国内生产总值519322亿元,按可比价格计算,比上年增长8%。自2000年以来,中国电力消费、生产的速度一直高于GDP增速,这使得电力(生产、消费)弹性系数长期大于1,因此单位GDP能耗一直难以降下来,说明我国的电力消费势头强劲。  “十二五”将是我国转变电力发展方式的关键时期,电力企业须抓住机遇,加快创新发展,坚持节约优先、优先开发水电、优化发展煤电、大力发展核电、积极推进新能源发电、适度发展天然气集中发电、因地制宜发展分布式发电、加快推进坚强智能电网建设、带动装备工业发展、促进绿色和谐发展。“十二五”期间,全国电力工业投资将达到3万亿元,比“十一五”增长68%。电源工程建设方面,“十二五”规划电源投资约为75万亿元,占全部电力投资的52%。2015年,全国发电装机容量将达到37亿千瓦左右,年均增长5%。其中,水电为84亿千瓦,抽水蓄能4100万千瓦,煤电33亿千瓦,核电4300万千瓦,天然气发电3000万千瓦,风电1亿千瓦,太阳能发电200万千瓦,生物质能发电及其他300万千瓦。  电网建设方面,“十二五”规划电网投资约55万亿元,占电力总投资的48%。2015年全国将形成以华北、华东、华中特高压电网为核心的“三纵三横”主网架。锡盟、蒙西、张北、陕北能源基地通过三个纵向特高压交流通道向华北、华东、华中地区送电,北部煤电、西南水电通过三个横向特高压交流通道向华北、华中和长三角特高压环网送电。  电力工程的快速发展和合理的建设结构为我国的经济发展提供了有力保障,强健的“筋骨”促进了我国国民经济的又好又快发展。

1 引言 电力系统继电保护是保证电力系统安全运行、提高经济效益的有效技术。计算机控制技术成功运用到电力系统继电保护中,使得未来继电保护技术发展趋势具有计算机化、网络化、智能化等特点。 我国继电保护学科、技术、继电器制造和人才队伍培养从无到有,在小活吸收国外先进继电保护设备和运行技术的基础上,建成了一支具有深厚理论功底和丰富运行经验的继电保护队伍。经过60年的发展和探索,我国已经建成了继电保护研究、设计、加工制造、运行维护和教学的完整体系。 2 我国继电保护的发展现状 上世纪60年代到80年代是晶体管继电保护蓬勃发展和广泛采用的时代。其中天津大学与南京电力自动化设备厂合作研究的500kV晶体管方向高频保护和南京电力自动化研究院研制的晶体管高频闭锁距离保护,运行于葛洲坝500kV线路上,结束了500kV线路保护完全依靠从国外进口的时代。在20世纪70年代中,基于集成运算放大器的集成电路保护已开始研究。到80年代末集成电路保护已形成完整系列,逐渐取代晶体管保护。到90年代初集成电路保护的研制、生产和应用仍处于主导地位,这是集成电路保护时代。我国从20世纪70年代末即已开始了计算机继电保护的研究,1984年原华北电力学院研制的输电线路微机保护装置首先通过鉴定,并在系统中获得应用,揭开了我国继电保护发展史上新的一页,为微机保护的推广开辟了道路。从90年代开始我国继电保护技术已进入了微机保护的时代。不同原理、不同机型的微机线路和主设备保护各具特色,为电力系统提供了一批新一代性能优良、功能齐全且工作可靠的继电保护装置。随着微机保护装置的研究,在微机保护软件、算法等方面也取得了很多理论成果。 3 电力系统继电保护发展趋势 1 计算机化 按照著名的摩尔定律,芯片上的集成度每隔18—24个月翻一番。其结果是不仅计算机硬件的性能成倍增加,价格也在迅速降低。微处理机的发展主要体现在单片化及相关功能的极大增强,片内硬件资源得到很大扩充,单片机与DSP芯片二者技术上的融合,运算能力的显著提高以及嵌入式网络通信芯片的出现及应用等方面。这些发展使硬件设计更加方便,高性价比使冗余设计成为可能,为实现灵活化、高可靠性和模块化的通用软硬件平台创造了条件。 我国在2000年220kV及以上系统的微机保护率为99%,线路微机保护占86%,到2003年底,220kV以上系统的微机保护已占到29%,线路的微机化率达到6%。实际运行中,微机保护的正确动作率要明显高于其他保护,一般比平均正常动作率高2—3个百分点。 继电保护装置的计算机化是不可逆转的发展趋势。电力系统对微机保护的要求不断提高,除了保护基本功能外,还应具有大容量故障信息和数据的长期存放空间,快速的数据处理功能,强大的通信功能,与其他保护、控制装置和调度联网以供享全系统数据、信息和网络资源的能力、高级语言编程等。 2 网络化 网络保护是计算机技术、通信技术、网络技术和微机保护相结合的产物,通过计算机网络来实现各种保护功能,如线路保护、变压器保护、母线保护等。网络保护的最大好处是数据共享,可实现本来由高频保护、光纤保护才能实现的纵联保护。另外,由于分站保护系统采集了该站所有断路器的电流量、母线电压量,所以很容易就可实现母线保护,而不需要另外的母线保护装置。 电力系统网络型继电保护是一种新型的继电保护,是微机保护技术发展的必然趋势。它建立在计算机技术、网络技术、通信技术以及微机保护技术发展的基础上。网络保护系统中网省级、省市级和市级主干网络拓扑结构,以及分站系统拓扑结构均可采用简单、可靠的总线结构、星形结构、环形结构等。分站保护系统在整个网络保护系统中是最重要的一个环节。分站保护系统有2种模式:一是利用现有微机保护;另一个是组建新系统,各种保护功能完全由分站系统保护管理机实现。由于继电保护在电网中的重要性,必须采取有针对性的网络安全控制策略,以确保网络保护系统的安全。3 智能化 随着计算机技术的飞速发展及计算机在电力系统继电保护领域中的普遍应用,新的控制原理和方法不断被应用于计算机继电保护中,近年来人工智能技术如专家系统、人工神经网络、遗传算法、模糊逻辑、小波理论等在电力系统各个领域都得到了应用,从而使继电保护的研究向更高的层次发展,出现了引人注目的新趋势。例如电力系统继电保护领域内出现了用人工神经网络(ANN)来实现故障类型的判别、故障距离的测定、方向保护、主设备保护等。在输电线两侧系统电势角度摆开情况下发生经过渡电阻的短路就是一非线性问题,距离保护很难正确作出故障位置的判别,从而造成误动或拒动;如果用神经网络方法,经过大量故障样本的训练,只要样本集中充分考虑了各种情况,则在发生任何故障时都可正确判别。 随着人工智能技术的不断发展,新的方法也在不断涌现,在电力系统继电保护中的应用范围也在不断扩大,为继电保护的发展注人了新的活力。将不同的人工智能技术结合在一起,分析不确定因素对保护系统的影响,从而提高保护动作的可靠性,是今后智能保护的发展方向。虽然上述智能方法在电力系统继电保护中应用取得了一些成果,但这些理论本身还不是很成熟,需要进一步完善。随着电力系统的高速发展和计算机、通信等各种技术的进步和发展,可以预见,人工智能技术在继电保护领域必会得到应用,以解决用常规方法难以解决的问题。 4 综合自动化 现代计算机技术、通信技术和网络技术为改变变电站目前监视、控制、保护和计量装置及系统分割的状态提供了优化组合和系统集成的技术基础。高压、超高压变电站正面临着一场技术创新。实现继电保护和综合自动化的紧密结合,它表现在集成与资源共享、远方控制与信息共享。以远方终端单元(RTU)、微机保护装置为核心,将变电所的控制、信号、测量、计费等回路纳入计算机系统,取代传统的控制保护屏,能够降低变电所的占地面积和设备投资,提高二次系统的可靠性。 综合自动化系统打破了传统二次系统各专业界限和设备划分原则,改变了常规保护装置不能与调度(控制) 中心通信的缺陷,给变电所自动化赋予了更新的含义和内容,代表了变电所自动化技术发展的一种潮流。随着科学技术的发展,功能更全、智能化水平更高、系统更完善的超高压变电所综合自动化系统,必将在中国电网建设中不断涌现,把电网的安全、稳定和经济运行提高到一个新的水平。至于英文额自己想办法吧

智能电网论文题目大全高中英语

学术堂整理了十五个好写的英语论文题目,供大家进行参考: 试论简奥斯汀生活对其小说的影响 (On the Impact of Jane Austen’s Life on Her Novels) “真实的诺言”与传统文化的碰撞——简析“真人秀”的实质和本地化过程 (When True Lies Challenge Tradition—An Analysis of the Reality and Localization of Reality TV) 从台湾问题看中美关系 (The Sino-US Relation—The Taiwan Issue)《傲慢与偏见》的生命力 (The Great Vitality of Pride and Prejudice) 平凡中的不平凡——《傲慢与偏见》(Significance in Commonplace—Pride and Prejudice) 萨皮尔沃夫理论 (Sapir-Whorf Hypothesis) 论格里高尔的悲剧 (An Analysis of Gregor’s Tragedy) 对大学生心理健康问题予更多关注 (More Attention to the Psychological Health of College Students) 文体学: 语言学习的科学 (Stylistics: A Scientific Approach) 佛教在西方 (Buddhism in the West) 非语言交际 (Nonverbal Communication) 国际反恐 (International Anti-Terrorism) 全球资金市场近期特征与走向 (The Character and Tendency of Global Capital Market in Recent Decades) 从《老人与海》中桑堤亚哥的性格可知——人是打不败的 (A Man Cannot Be Defeated—From the Character of Santiago in The Old Man and the Sea) 南方的失落 (The Loss of the South)

题目不要太大,也不要太小,太大了面太广容易泛泛,小了就无材料可查,没东西可写。写你熟悉的 资料好查的 参考

提供一些英语专业的毕业论文题目,供参考。

论文一般由题名、作者、摘要、关键词、正文、参考文献和附录等部分组成,其中部分组成(例如附录)可有可无。论文各组成的排序为:题名、作者、摘要、关键词、英文题名、英文摘要、英文关键词、正文、参考文献和附录和致谢。下面按论文的结构顺序依次叙述。题目(一)论文——题目科学论文都有题目,不能“无题”。论文题目一般20字左右。题目大小应与内容符合,尽量不设副题,不用第1报、第2报之类。论文题目都用直叙口气,不用惊叹号或问号,也不能将科学论文题目写成广告语或新闻报道用语。署名(二)论文——署名科学论文应该署真名和真实的工作单位。主要体现责任、成果归属并便于后人追踪研究。严格意义上的论文作者是指对选题、论证、查阅文献、方案设计、建立方法、实验操作、整理资料、归纳总结、撰写成文等全过程负责的人,应该是能解答论文的有关问题者。往往把参加工作的人全部列上,那就应该以贡献大小依次排列。论文署名应征得本人同意。学术指导人根据实际情况既可以列为论文作者,也可以一般致谢。行政领导人一般不署名。引言(三)论文——引言是论文引人入胜之言,很重要,要写好。一段好的论文引言常能使读者明白你这份工作的发展历程和在这一研究方向中的位置。要写出论文立题依据、基础、背景、研究目的。要复习必要的文献、写明问题的发展。文字要简练。材料方法(四)论文——材料和方法按规定如实写出实验对象、器材、动物和试剂及其规格,写出实验方法、指标、判断标准等,写出实验设计、分组、统计方法等。这些按杂志对论文投稿规定办即可。实验结果(五)论文——实验结果应高度归纳,精心分析,合乎逻辑地铺述。应该去粗取精,去伪存真,但不能因不符合自己的意图而主观取舍,更不能弄虚作假。只有在技术不熟练或仪器不稳定时期所得的数据、在技术故障或操作错误时所得的数据、不符合实验条件时所得的数据才能废弃不用。而且必须在发现问题当时就在原始记录上注明原因,不能在总结处理时因不合常态而任意剔除。废弃这类数据时应将在同样条件下、同一时期的实验数据一并废弃,不能只废弃不合己意者。实验结果的整理应紧扣主题,删繁就简,有些数据不一定适合于这一篇论文,可留作它用,不要硬行拼凑到一篇论文中。论文行文应尽量采用专业术语。能用表的不要用图,可以不用图表的最好不要用图表,以免多占篇幅,增加排版困难。文、表、图互不重复。实验中的偶然现象和意外变故等特殊情况应作必要的交代,不要随意丢弃。讨论(六)论文——讨论是论文中比较重要,也是比较难写的一部分。应统观全局,抓住主要的有争议问题,从感性认识提高到理性认识进行论说。要对实验结果作出分析、推理,而不要重复叙述实验结果。应着重对国内外相关文献中的结果与观点作出讨论,表明自己的观点,尤其不应回避相对立的观点。论文的讨论中可以提出假设,提出本题的发展设想,但分寸应该恰当,不能写成“科幻”或“畅想”。

智能电网论文题目大全初中英语作文

老铁你这个属于收费服务了。

Smart grid (smart grid), is the intelligent power grid, also known as the "grid 0", it is based on the integrated, high-speed bidirectional communication network, and on the basis of the sensor and measurement by advanced technology, advanced equipment and technology, advanced control method as well as the advanced decision support system technology application, and realize the power grid of reliable, safe, economic and efficient, environmental friendly and use the target of the safety, its main features include the self-healing, motivation and include customers, against attacks, to meet the needs of the user in the 21 st century power quality, allow all kinds of different power form of access, start power market and asset optimization efficient 大概是这样吧,我才七年级,只能帮你这点了!

智能电网论文题目大全高中英语范文

发电厂厂用电设计220kV变电站电气设计防雷接地设计某钢铁企业自备电厂设计电网潮流计算与仿真电力系统继电保护基于单片机的电动机软启动器

就直接找大学四级的作文题就行了。。。

Judge from appearanceWhen we are in primary school, we learn an article about a swan with ugly face before it grows Because of its appearance, it gets badly treatment from his The moment when it becomes a swan, it surprises Appearance always influences how others judge There is a group to make a A girl who did not make up and looked ugly, and she tried to borrow some money to take the bus, but she got refused all the So the girl made up and looked When she continued to borrow money, most people were nice to her and gave her the money, some even gave The different treatment shows that people are easy to judge others by appearance, so appearance is We need to keep neat and dress

试以“Can Money Buy Happiness”(金钱能买来幸福吗?)为题写一篇议论文,必须包括以下内容:有人认为金钱是幸福之本(source of happiness);也有人认为金钱是万恶之源(root of all evil);我的看法。【名师点拨】 此文属于议论文体裁,可以分为三段。不同的人对金钱有不同的观点,两种态度截然相反,所以第一段和第二段形成了对立的关系。第一段,有人认为金钱是幸福之本,有钱的人可以享受生活,如吃得好、穿得好、住得好,可以买名牌服装,开好车。第二段,有人认为金钱是万恶之源,正因为有人认为“有钱能使鬼推磨”,因此有人为了钱去偷、去抢、去杀人,成了犯罪分子。第三段,我的看法:只有合法的、正道来的钱才能给人带来幸福,否则为钱而钱,那就是罪恶。【参考范文】Can Money Buy Happiness ? Can money buy happiness ? People have various answers to the question Some people may say , “Yes ” In their eyes , only a rich man can live a happy life For example , a man with plenty of money can buy delicious food , beautiful dresses , luxurious houses , expensive cars—anything required for him to live comfortably and enjoyably For this reason , some people enjoyably For this reason , some people believe that money is the source of happiness On the other hand , there are still a lot of others who take a negative attitude towards money They think that money is the root of all evil As a proverb goes , “Money makes the mare go ” Money can drive people into stealing , robbing and even murdering Many people become criminals just because they were in search of much more money For these people money brings them nothing but evil and misery In my view money , when justly obtained and properly used , can bring us happiness and blessings However , if we try every possible means , good or evil , to get money for nothing , money means nothing but a source of evil Therefore , I believe that money is a good servant but a bad master 以 “In What Way Will Internet Change the Way of Our Life”为题写一篇短文。(字数:200左右)【参考范文】In What Way Will Internet Change the Way of Life ? The Internet is one of the most discoveries of the twentieth century More and more people or using the Internet They usually use internet to send E-mails and play games In many ways it has changed or will change our way of life Firstly , it will change our way of communication We will exchange information with others on Internet instead of letters or telephones , which is much cheaper and faster and contains much more information Secondly , we can get information very quickly Actually we can get information from all over the world in just a few minutes It saves a lot of time Thirdly , we can make many friends through the internet We can get in touch with people faraway , even from foreign conrtres They can tell us a lot about their own counties Fourthly , we can buy things through Internet without going out and enjoy ourselves with some films and songs at home Furthermore , we can have on-line course-course in which students follow the Internet We can work at home and in our own time This enables us to use our time more flexibly In a word , Internet will change our life in many ways and it will be very helpful it we use the Internet wisely

智能电网技术论文题目大全高中英语

发电厂厂用电设计220kV变电站电气设计防雷接地设计某钢铁企业自备电厂设计电网潮流计算与仿真电力系统继电保护基于单片机的电动机软启动器

Based on the communication network Direct3D visual simulation engine design and implementationtheVisual Simulation (Visual Simulation) is used to realize 3 d space information visualization technology, it has a realistic Simulation effect and convenient operation method, can well satisfy the new plane avionics system design This paper designs and realizes an Direct3D based on the communication network visual simulation First, in this paper the characteristics of the visual simulation and the programming essentials Direct3D brief analysis of selection, and expounds the main reason for the Direct3D Secondly, put forward the visual simulation software, the total design project of the simulation software program and the software module partition the working process of the analysis of the various modules, explore the main functions and the relations among And then, based on the communication network of Direct3D visual simulation is the key technology of engine are analyzed and the study, introduces solutions discrete event simulation, Direct3D resource management and animation optimization and the mouse control technology, the key technology of the Finally, this essay discusses the Direct3D based on the communication network visual simulation software realization method, and in a more complex switched communication network as an example, the visual simulation, and the performance of the program was tested

只,我我比诶亽我 好 日哈恩不诶大

我 们, 这,给的,好的, 吧,

相关百科
热门百科
首页
发表服务