使用期限永久
许可形式单机和网络版
原产地加拿大
介质下载
适用平台windows
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工作区树多选功能:包括定义分支、仿真集和仿真任务。
新脚本指令:#COMPONENTID和$#Type。
滚动元件选项卡:使用Tab键滚动元件。
输出通道限制增加:从2048增加到65536。
“原理图”选项卡功能增强:全部关闭、右侧全部关闭等。
Time vs. Phasor Domain Simulation
EMTDC is a class of simulation tool, which differs from phasor domain solution engines, such as load-flow and transient stability programs. These tools utilize steady-state equations to represent electrical circuits, but will actually solve the differential equations of machine mechanical dynamics.
EMTDC results are solved as instantaneous values in time, yet can be converted into phasor magnitudes and angles via built-in transducer and measurement functions in PSCAD - similar to the way real system measurements are performed.
Since load-flow and stability programs work with steady-state equations to represent the power system, they can output only fundamental frequency magnitude and phase information. EMTDC can duplicate the response of the power system at all frequencies, bounded only by the user-selected time step.
Consider the simple circuit in Figure 2-3. A comparator is being used to compare a real constant variable equal to 0.0, with a data signal Ea, which is a measured voltage from a voltmeter. The comparator is adjusted so as to give a high output when Ea becomes greater than 0.0, and a low output otherwise. The comparator dynamics are defined by default in the DSDYN subroutine, whereas the measured voltage signal Ea is defined in DSOUT as an output quantity.
With the above configuration, the comparator output signal will contain a single time step delay. This is due to the fact that the comparator dynamics in DSDYN (i.e. the code that determines its output state) are using a measured voltage Ea, defined in DSOUT. Since the comparator output state is based on the comparator inputs, the output will appear to have been delayed by one time step.
This delay can be removed simply by forcing the comparator dynamics code from DSDYN to DSOUT. This will force the comparator to consider the measured voltage within the same time step, when determining its state.
In this new era, PSCAD V5 harnesses the power
of parallel computing, enables powerflow
data migration, and permits full application
automation via scripting. These new features
ensure that the simulation of large electric
networks, is faster and more efficient than ever.
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