北京天演融智软件有限公司(科学软件网)前身是北京世纪天演科技有限公司,成立于2001年,专注为国内高校、科研院所和以研发为主的企事业单位提供科研软件和服务的国家。
As power systems evolve, the need for accurate, intuitive simulation tools becomes more and more important. With PSCAD you can build, simulate, and model your systems with ease, providing limitless possibilities in power system simulation. Included is a comprehensive library of system models ranging from simple passive elements and control functions to electric machines and other complex devices.
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.
EMTDC uses a Chatter Removal algorithm (related to the Interpolation algorithm) to remove these unwanted oscillations.
EMTDC does not restrict how circuit elements can be combined: Users can place any number of switching elements, sources, etc. in series or in parallel.
EMTDC switching devices and sources can be ideal (i.e. 0 resistance) or non-ideal (where the user can enter the on/off resistance values).
Information in this document is subject to change without notice. No part of this document may be reproduced in any form or by any means, electronically or mechanically, for any purpose without the express written permission of Manitoba Hydro International Ltd.
PSCAD™ is a registered trademark of Manitoba Hydro International Ltd.
EMTDC™ is a trademark of Manitoba Hydro, and Manitoba Hydro International Ltd. is a registered user.
Microsoft Windows XP, Windows 7, Vista, Developer Studio are the registered trademarks or trademarks of Microsoft Corporation in the United States and other countries.
Intel and Intel Visual Fortran are trademarks of Intel Corporation.
科学软件网不仅提供软件产品,更有多项附加服务免费提供,让您售后无忧!科学软件网不定期举办各类公益培训和讲座,让您有更多机会免费学习和熟悉软件。科学软件网为全国大多数高校提供过产品或服务,销售和售后团队,确保您售后无忧!