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多实例模块(MIM)
用户可以轻松地复制和粘贴模型,甚至可以将模型保存在库项目中,跟其他元件一样,可以在多个案例项目中使用。
电路可以在模型内部复制并实例化。这样可以减少重复工作。
模型可以有参数,这些参数可以用于在不需要连接端口的情况下通过模型进出数据。
黑匣子模块
该特性将任何控制系统模块转换为等效的非模块组件,并配有生成的源文件和/或已编译的二进制文件。
黑匣子功能允许用户以图形方式设计他们的系统,并将系统设置为黑匣子,从而在向客户分发他们的模型时保护他们的知识产权。
PSCAD V5功能更新
稀疏矩阵求解(EMTDC):一个新的稀疏矩阵求解算法,将有利于执行求解更大的子系统。如果子系统中的节点数超过200(默认值),则自动使用新的解决方案。
改进的增强节点分析(MANA)算法(EMTDC):采用MANA算法实现了电压/电流相关的电压/电流源模型。只有在项目中使用受控源时才使用MANA。
多时间步长PNI(EMTDC)*:输电线路模型可连接两个不同时间步长的仿真模型。此功能将作为中间库的一部分提供。
An EMTDC simulation begins at a specified start time and finishes at a specified end time. Between these two times, the program performs the same sequential process iteratively, each iteration incrementing the time by a specified interval. This interval is referred to as a time step, which remains constant (i.e. fixed) during the course of the simulation.
As illustrated by Figure 2-1, the core solution process begins and ends with the system dynamics. First, variables are initialized and stored in BEGIN. Dynamic functions are performed in DSDYN, which includes the preparation of electric network devices such as sources, etc., as well as the manipulation of control signals. The electric network is solved and the resulting measured quantities are considered, along with any post-solution processing requirements, in DSOUT, before the time step is incremented.
Of course, the complete EMTDC solution sequence is more involved than that shown in Figure 2-1. There are several other features present that ensure solution accuracy and speed; all of which are discussed in the following sections. A more complete program process is illustrated in Figure 2-2.
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