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关 键 词：pscad软件
行 业：IT 软件 双机容错与集群软件
发布时间：2021-06-27
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System Dynamics
The system dynamics is an essential part of the EMTDC solution process. It serves to encompass the electric network, providing the ability to interface with it on either side: Data may be controlled from one side, while extracted from the other.
Essentially a Fortran program in its own right, the system dynamics is built according to customizable specifications. These specifications are normally provided through PSCAD, in the form of components and modules. Components and modules are graphical representations of how the final program is to be structured, where each module, including the main page, is represented by a unique Fortran file. This file consists of declarations for a DSDYN subroutine, a DSOUT subroutine, and two BEGIN subroutines. Components always exist within modules, so as such they represent inline code that combines to define the contents of each subroutine.
Of course, some components are electrical in nature and hence provide information for the construction of the electric network as well. This information is collected and inserted into a Data file, where each module in a project possesses its own unique Data file. Data files are discussed in more detail later on in the section entitled Electric Network Solution.
不同季节对沙特阿拉伯网络互连区域之间电力传
输业务极限的评估。这些传输限制是对系统静态和动
态的限制。此外，灵敏度的传输限制可以确定关键设
备，比如发电机电压的可用性和输电阻塞管理的识别。
该信息有助于系统操作员根据资源的可用性将区域间
的传输调整到安全级别。
只要您能想得到，就能模拟得出
随着电力系统的发展，对的、直观的仿真工具的需求变得越发重要了。用PSCAD，您能够创建、仿真、并能轻易地模拟您的系统，给电力系统仿真提供了无限可能。PSCAD包括一个完整的系统模型库，系统模型从简单的无源元件和控制功能，到电机和其他复杂的设备。
PSCAD得益于30多年的不断研究和开发。我们从全球用户群的想法和反馈中得到启发。这个哲理使得PSCAD成为当今受欢迎的电力系统暂态仿真软件。
Manitoba Hydro International Ltd所能提供的项目研究以及给世界各地的公司提供过的服务。
绝缘配合研究
我们和ABB Schweiz AG公司签约完成对沙特阿拉伯王国380 kv GIS变电站绝缘配合的研究。这些研究成果包括暂态过电压（TOV），操作过电压（SOV）和雷电感应过电压。
暂态恢复电压（TRV）研究
我们为Red Eléctrica de España进行了345KV串联电感器暂态恢复电压（TRV）的研究，高压输电线路的故障限流以及暂态稳定改善方面有时候是需要串联电感器的（虽然并不常用），串联电感器对断路器的暂态恢复电压提出了挑战。由于串联电感器的安装并不常见，所以每种情况必须仔细评估考虑断路器，电容耦合电压互感器（CCVTs）和其他主站设备的位置。在TRV这些类型的研究方面我们是非常的。
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Change was on the way: Minicomputers and later personal computers came on the scene with new operating systems, which made all the hocus-pocus associated with using large scientific programs on the old mainframes, obsolete. Virtual memory replaced overlays. New graduates, no longer intimidated by the computer, were more than capable of dealing with any programming situation. Today, the technical expert has control over both the computer and its programs and is intimately involved in adapting both hardware and software to meet his/her requirements for investigation and analysis.
EMTDC was developed for this new and more acceptable environment, first specifically for UNIX/Linux, and then on to Microsoft Windows operating systems. Model building of control and electric systems is no longer defined entirely by data entry – with the program hidden, untouchable somewhere in the depths of the computer memory: Now the model is created by user Fortran statements. Time domain model components, such as AC machines, exciters, six-pulse valve groups, etc., are modularized into subroutines for easy assembly by the user. The user is able to build his or her subroutines, if and when models are not available.
With the advent of PSCAD, the graphical user interface for EMTDC, there is for the most part, no longer any need for the user to build his/her own subroutines through coding. Subroutine assembly and insertion into EMTDC is now performed automatically by PSCAD. The responsibility of the user has been reduced to graphically assembling a given network, and in some cases, adding some user-defined code. However, there may still be a need in some instances, such as the conversion of older subroutines, where a good knowledge of the internal structure and methods of EMTDC is important.
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