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Author: h.gras
Type: Library
Downloaded: 113 times
Date: 2022-09-09

Digitial Twin Toolbox

Description:
The Digital Twin toolbox provides an example demonstrating how to synchronize EMTP device parameters with data received from a sender (Sender) through TCP/IP using the WebSocket protocol. A receiver (... see moreReceiver) accepting data in string format is also provided and may be started from the “Digital Twin Receiver” button device of the Digital Twin library.

To install:
- Download and unzip the file
- start the installer. Select the folder of the EMTPWorks version you which to add the Digital Twin Toolbox.
- Restart EMTP. A new Digital Twin library and a new Digital Twin example should be available.

More information is available from the help file of the Digital Twin device of the library.

Tag(s): digital twin, TCP, IP, scada, control room

Author: h.gras
Type: Example
Downloaded: 137 times
Date: 2022-04-04

AC line pipeline magnetic coupling

Description:
Example of overvoltage induced by magnetic coupling between a line and a pipeline

Tag(s): pipeline, coupling, induced, overvoltage

Author: h.gras
Type: Example
Downloaded: 204 times
Date: 2022-03-18

Vary parameters, start simulation and export scope waveforms by script

Description:
This script is a simple example to learn how to script.
The script is started from the EMTP design by double clicking on the 'Script1' grey button.
The script example:
... see more - varies a fault resistance
- runs a simulation for each value
- exports results of a selected list of scope in MAT and ASCII formats
- returns Min and Max

Tag(s): script, script, ASCII, MAT, parametric, minimum, maximum

Author: h.gras
Type: Publication
Date: 2021-11-30

Modular Multilevel Matrix Converter for Low-Frequency AC Transmission – modeling and Simulation in EMTP

Description:
Authors: Rafael Castillo-Sierra and Giri Venkataramanan
The transmission of power with AC faces limitations both to the stable operation of the electrical system and to the physical properties of... see more the transmission lines. Therefore, alternatives are being sought to mitigate these problems without the need to build new lines or replace existing ones with new, more powerful ones. In this context, a proven method makes it possible to overcome these problems by reducing the frequency at which power is transmitted. This method is known as Low Frequency AC Transmission (LFAC). In this sense, the model presented in this Research Contribution Prize Program EMTP® 2021 shows the implementation of a low-frequency transmission line in a small power system. The model presented shows a new block in EMTP of the AC/AC converter used, the Modular Multilevel Matrix Converter (MMMC) and the controls necessary for its operation. Time domain studies show that the technology is feasible and has the potential to improve the controllability and stability of transmission systems.

Tag(s): AC-AC power conversion, Electromagnetic Transient Studies in EMTP, Low frequency AC transmission, Modular Multilevel Matrix Converter

Author: h.gras
Type: Example
Downloaded: 102 times
Date: 2021-07-23

AC and DC components meter

Description:
This example contains a device which calculates the DC and AC components.
- The DC component is available in the DC control scope with half
a cycle delay versus the simulation time
- ... see moreThe AC component is available in the DC control scope with one
cycle delay versus the simulation time

Once the maximum DC magnitude is reached, the time constant is
determined assuming the DC decay is exponential and uninterrupted

Tag(s): DC, AC, exponential, meters, zero-crossing, asymmetry, fault