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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.
算能增强
EMTDC现在包含了一个改进的、增强的节点分析(MANA)算法,从而可实现电压/电流相关的电压/电流源(包含在V5主库中)。此外,还实现了一个新的对求解较大的子系统时非常有用的稀疏求解方法。该新的求解方法在子系统节点数超过200(默认值)时将自动使用。
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.
我们签订的一个项目,协助一个多阶段试点项目
的开发,论证单线接地回路(SWER)高压直流输电
到偏远的北部地区的可行性。在一个新的高压直流输
电系统配电一体化的项目中我们提供支持。第1
和第2阶段已完成,第3阶段的安装目前正在进行中。
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