科学软件网提供软件和培训服务已有19年,拥有丰富的经验,提供软件产品上千款,涵盖领域包括经管,仿真,地球地理,生物化学,工程科学,排版及网络管理等。同时还有专业的服务,现场培训+课程,以及本地化服务。
电容器组的设计
● 电动机启动
● 详细故障与保护系统分析
● 系统恢复(黑启动)研究
● 电能质量谐波、闪变
● 传输线场效应和电晕分析
● 自定义模型的开发
HVDC研究
我们拥有经验丰富,熟悉多学科的专家团队,并
且为世界各地的HVDC电力系统社区提供专门的工程
解决方案。我们是Nelson River Bipole I & II期高压直
流输电项目的关键参与者,这为许多现代高压直流输
电项目研究包括Nelson River Bipole III期的发展做了
很多基础工作。我们拥有超过40年的设计,维护和操
作经验。
我们在以下领域的HVDC方面提供全球服务:
● 高压直流输电规划与可行性研究
● 操作,维护和调试服务
● 为LCC和VSC包括现代模块化多电平换流器
(MMC)提供仿真模型
● 交直流系统相互作用
● 交互作用
● 滤波器设计
● 接地极设计
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.
Manitoba作为加拿大有名的水电省,其中95%的
电力是由清洁可再生的水产生的。 作为Manitoba Hydro
的子公司,我们认识到可再生清洁能源的重要性。我
们协助客户完成世界各地的项目,并且在模型和仿真
发展和理解方面投入了很多年的精力,在这个领域依
靠自身的知识和经验成为专家。我们有专门的双馈感
应发电机(DFIG)模型和风场模拟。我们的模型已被
公认为次同步谐振(SSR)和次同步交互控制的(SSCI)
行业筛选的标准。
Manit oba Hydro Int ernational 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。
One of the ways to understand the behaviour of complicated systems is to study the response when subjected to disturbances or parametric variations. Computer simulation is one way of producing these responses, which can be studied by observing time domain instantaneous values, time domain RMS values, or the frequency components of the response.
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