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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 **s. 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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解决方案。我们是Nelson River Bipole I & II期高压直
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PSCAD新主库模型(EMTDC):
MMC模型库
相域同步电机
单相感应电动机
Z域(离散化)控件
单相5-12多绕组变压器
3/5-柱,对偶概念变压器
迟滞电抗器
TRV包络发电机
谐波信号发生器
Pick-Up和Drop-Out 定时器
Clark及反Clark 变换
变化检测器
死区控制器
刻度变换器
离散化
复共轭
电气相分接
随着可再生能源及其复杂控制器的出现,电磁暂态(EMT)模拟器已经**出了小型局部系统设计和问题解决工具的范畴。EMT仿真是当前大型电网设计中必不可少的。
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