Includes setup, expansion, and troubleshooting information for your Mac Pro computer
標(biāo)簽: Mac Pro
上傳時(shí)間: 2015-03-24
上傳用戶:wdl1127
PSCAD/EMTDC是加拿大馬尼托巴高壓直流研究中心出品的一款電力系統(tǒng)電磁暫態(tài)仿真軟件,PSCAD(Power Systems Computer Aided Design)是用戶界面,EMTDC(Electromagnetic Transients including DC)是內(nèi)部程序。 EMTDC最初代表直流暫態(tài),是一套基于軟件的電磁暫態(tài)模擬程序。Dennis Woodford博士于1976年在加拿大曼尼托巴水電局開發(fā)完成了EMTDC的初版,編寫這個(gè)程序的原因是因?yàn)楫?dāng)時(shí)現(xiàn)存的研究工具不能夠滿足曼尼托巴電力局對(duì)尼爾遜河高壓直流工程進(jìn)行強(qiáng)有力和靈活的研究的要求。自此之后程序被不斷開發(fā),至今已被廣泛地應(yīng)用在電力系統(tǒng)許多類型的模擬研究,其中包括交流研究,雷電過(guò)電壓和電力電子學(xué)研究。EMTDC開始時(shí)在大型計(jì)算機(jī)上使用。然后在1986年被移植到Unix系統(tǒng)和以后的PC機(jī)上。 PSCAD代表電力系統(tǒng)計(jì)算機(jī)輔助設(shè)計(jì),PSCAD的開發(fā)成功,使得用戶能更方便地使用EMTDC進(jìn)行電力系統(tǒng)分析,使電力系統(tǒng)復(fù)雜部分可視化成為可能,而且軟件可以作為實(shí)時(shí)數(shù)字仿真器的前置端。可模擬任意大小的交直流系統(tǒng)。PSCAD V1 1988年首先在阿波羅工作站上使用,然后大約在1995年P(guān)SCAD V2開始應(yīng)用。PSCAD V3以PC Windows作為平臺(tái),在1999年面世。目前最新版本的是PSCAD V4.2.1。 用戶可以通過(guò)調(diào)用隨EMTDC 主程序一起提供的庫(kù)程序模塊或利用用戶自己開發(fā)的元部件模型有效地組裝任何可以想象出的電力系統(tǒng)模型和結(jié)構(gòu)。EMTDC 的威力之一是可以較為簡(jiǎn)單地模擬復(fù)雜電力系統(tǒng), 包括直流輸電系統(tǒng)和其相關(guān)的控制系統(tǒng)。 采用 PSCAD/EMTDC 進(jìn)行的典型模擬研究包括: ? 一般的交流電力系統(tǒng)電磁暫態(tài)研究 ? 直流輸電結(jié)構(gòu)和控制 ? FACTS(靈活交流輸電系統(tǒng))元部件模型 ? 由于故障、斷路器操作或雷電沖擊引起的電力系統(tǒng)的過(guò)電壓研究 ? 絕緣配合研究 ? 諧波相互影響研究 ? 靜止補(bǔ)償器研究 ? 非線性控制系統(tǒng)研究 ? 變壓器飽和研究, 如鐵磁振蕩和鐵芯飽和不穩(wěn)定性研究 ? 同步發(fā)電機(jī)和感應(yīng)電動(dòng)機(jī)的扭矩效應(yīng)和自勵(lì)磁研究 ? 陡前波分析 ? 研究當(dāng)一臺(tái)多軸系發(fā)電機(jī)與串補(bǔ)線路或電力電子設(shè)備相互作用時(shí)的次同步諧振現(xiàn)象 ? 向孤立負(fù)荷送電 電力系統(tǒng)數(shù)字仿真實(shí)驗(yàn)室使用PSCAD/EMTDC主要進(jìn)行一般的交流電力系統(tǒng)電磁暫態(tài)研究,進(jìn)行簡(jiǎn)單和復(fù)雜電力系統(tǒng)的故障建模及故障仿真,分析電力系統(tǒng)故障電磁暫態(tài)過(guò)程。
標(biāo)簽: PSCAD實(shí)驗(yàn)指導(dǎo)教程
上傳時(shí)間: 2016-02-16
上傳用戶:xixi略
Combinatorial Preconditioners and Multilevel Solvers for Problems in Computer Vision and Image Processing
標(biāo)簽: image processing
上傳時(shí)間: 2016-03-28
上傳用戶:hzcloudy
CAD(Computer Aided Design)誕生于60年代,是美國(guó)麻省理工大學(xué)提出了交互式圖形學(xué)的研究計(jì)劃,由于當(dāng)時(shí)硬件設(shè)施的昂貴,只有美國(guó)通用汽車公司和美國(guó)波音航空公司使用自行開發(fā)的交互式繪圖系統(tǒng)。計(jì)算機(jī)輔助設(shè)計(jì)(CAD-Computer Aided Design)指利用計(jì)算機(jī)及其圖形設(shè)備幫助設(shè)計(jì)人員進(jìn)行設(shè)計(jì)工作。 平面繪圖:能以多種方式創(chuàng)建直線、圓、橢圓、多邊形、樣條曲線等基本圖形對(duì)象。 繪圖輔助工具:提供了正交、對(duì)象捕捉、極軸追蹤、捕捉追蹤等繪圖輔助工具。正交功能使用戶可以很方便地繪制水平、豎直直線,對(duì)象捕捉可 幫助拾取幾何對(duì)象上的特殊點(diǎn),而追蹤功能使畫斜線及沿不同方向定位點(diǎn)變得更加容易。 編輯圖形:CAD具有強(qiáng)大的編輯功能,可以移動(dòng)、復(fù)制、旋轉(zhuǎn)、陣列、拉伸、延長(zhǎng)、修剪、縮放對(duì)象等。 標(biāo)注尺寸:可以創(chuàng)建多種類型尺寸,標(biāo)注外觀可以自行設(shè)定。 書寫文字:能輕易在圖形的任何位置、沿任何方向書寫文字,可設(shè)定文字字體、傾斜角度及寬度縮放比例等屬性。 圖層管理功能:圖形對(duì)象都位于某一圖層上,可設(shè)定圖層顏色、線型、線寬等特性。 三維繪圖:可創(chuàng)建3D實(shí)體及表面模型,能對(duì)實(shí)體本身進(jìn)行編輯。 網(wǎng)絡(luò)功能:可將圖形在網(wǎng)絡(luò)上發(fā)布,或是通過(guò)網(wǎng)絡(luò)訪問(wèn)AutoCAD資源。 數(shù)據(jù)交換 :提供了多種圖形圖像數(shù)據(jù)交換格式及相應(yīng)命令。
標(biāo)簽: CAD 計(jì)算機(jī)輔助工具
上傳時(shí)間: 2016-03-29
上傳用戶:594551562
Computational models are commonly used in engineering design and scientific discovery activities for simulating complex physical systems in disciplines such as fluid mechanics, structural dynamics, heat transfer, nonlinear structural mechanics, shock physics, and many others. These simulators can be an enormous aid to engineers who want to develop an understanding and/or predictive capability for complex behaviors typically observed in the corresponding physical systems. Simulators often serve as virtual prototypes, where a set of predefined system parameters, such as size or location dimensions and material properties, are adjusted to improve the performance of a system, as defined by one or more system performance objectives. Such optimization or tuning of the virtual prototype requires executing the simulator, evaluating performance objective(s), and adjusting the system parameters in an iterative, automated, and directed way. System performance objectives can be formulated, for example, to minimize weight, cost, or defects; to limit a critical temperature, stress, or vibration response; or to maximize performance, reliability, throughput, agility, or design robustness. In addition, one would often like to design computer experiments, run parameter studies, or perform uncertainty quantification (UQ). These approaches reveal how system performance changes as a design or uncertain input variable changes. Sampling methods are often used in uncertainty quantification to calculate a distribution on system performance measures, and to understand which uncertain inputs contribute most to the variance of the outputs. A primary goal for Dakota development is to provide engineers and other disciplinary scientists with a systematic and rapid means to obtain improved or optimal designs or understand sensitivity or uncertainty using simulationbased models. These capabilities generally lead to improved designs and system performance in earlier design stages, alleviating dependence on physical prototypes and testing, shortening design cycles, and reducing product development costs. In addition to providing this practical environment for answering system performance questions, the Dakota toolkit provides an extensible platform for the research and rapid prototyping of customized methods and meta-algorithms
標(biāo)簽: Optimization and Uncertainty Quantification
上傳時(shí)間: 2016-04-08
上傳用戶:huhu123456
EECS150-Digital Design Lecture 1 - Introduction Electrical Engineering and Computer Sciences University of California, Berkeley
標(biāo)簽: lec01-intro 接口
上傳時(shí)間: 2016-04-08
上傳用戶:sidewen666
Fiddler is a free web debugging tool which logs all HTTP(S) traffic between your computer and the Internet. Inspect traffic, set breakpoints
標(biāo)簽: 抓包 網(wǎng)絡(luò)
上傳時(shí)間: 2016-06-03
上傳用戶:ttry
cv 是computer vision,opencv是開發(fā)的計(jì)算機(jī)視覺處理算法。
標(biāo)簽: 計(jì)算機(jī)視覺的第一本書
上傳時(shí)間: 2016-09-25
上傳用戶:fly_1797
Coding the Matrix _ Linear Algebra through Computer Science Applications 著名線性代數(shù)和矩陣課程的課本,亞馬遜銷量第一
上傳時(shí)間: 2016-11-14
上傳用戶:kitool
MPICH2 Windows Development Guide? Version 1.0.6 Mathematics and Computer Science Division Argonne National Laboratory
標(biāo)簽: Development Windows Version MPICH2 Guide
上傳時(shí)間: 2017-05-05
上傳用戶:BlackCuber
蟲蟲下載站版權(quán)所有 京ICP備2021023401號(hào)-1