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Author: h.gras
Type: Example
Downloaded: 353 times
Date: 2018-01-02

Change load power from an external file

Description:
This example illustrates how to read data from an external file and automatically update devices parameters in the design. In this example, the device is a load.
Double click on Update Parameters... see more device to start the script.

Tag(s): script, parametric, file, external, automate, Load

Author: thpapad
Type: Document
Downloaded: 387 times
Date: 2017-11-03

INDUCED VOLTAGES AND CURRENTS: OVERVIEW AND EVALUATION OF SIMULATION MODELS AND METHODOLOGIES

Description:
In this paper induced voltages and currents caused by underground cables are calculated in cable sheaths and nearby metallic pipelines. The performance of several simulation methods and models are inv... see moreestigated in steady-state, considering also different implementations in ATP-EMTP, EMTP-RV and PSCAD/EMTDC. The analysis is extended in the simulation of transient overvoltages in cable systems, evaluating the accuracy of two widely used simulation models. The influence of different parameters is investigated, among them specifically the earth properties. Results reveal that implementing accurate earth representations, earth conduction effects have a significant impact on induced voltages at the power frequency, while for high frequency phenomena the influence is minor.

Tag(s): induced voltages

Author: h.gras
Type: Example
Downloaded: 259 times
Date: 2017-02-03

Tutorial on exported mask (Demonstrated with an exciter)

Description:
In this example, a device is placed in a subcircuit. The goal is to be able to modify the parameters of this device from the parent mask.
However, this device is a masked subcircuit and therefore... see more ## are not accepted. Here are two options to achieve this task.

Tag(s): exported, mask, exciter, governor, subcircuit, subnetwork, script, method

Author: e.rutovic
Type: Example
Downloaded: 1267 times
Date: 2013-02-20

JavaScript Examples

Description:
Some simple EMTP-RV scripts :
- Parameters sweep
- Change the simulation options
- Run simulation
- Change the fault location
- Change the transformer remanent flux
- Cha... see morenge the switching Times

Tag(s): Script, Javascript

Author: AdminEMTP-RV
Type: Document
Downloaded: 518 times
Date: 2012-06-18

Presentation of an approach based on EMTP for the calculation of lightning induced overvoltages

Description:
Authors:
A. Xémard, P. Baraton, B. Bressac, N. Qako, J. Mahseredjian, G. Simard, J. Ribeiro, R. Tarafi, A. Zeddam.

Abstract:
LIPS (Lightning Impact on Power Systems) is a toolbo... see morex based on EMTP (DCG version) and devoted to the calculation of the failure rate of apparatus due to lightning. This software covers direct and induced lightning. It has been developed in a partnership project between France Telecom, Hydro-Québec and électricité de France. The induced lightning nearby the electrical system. It is based on the following computational steps:
1) For each overhead line and underground cable of the electrical system, two equivalent current sources are calculated in the frequency domain, representing the illumination of the conductors by external electrical field due to lightning. These sources are evaluated in the frequency domain, taking into account the variation of the parameters of lines and cables with frequency. The conductivity of the ground is taken as finite. The modal theory is applied in the case of multi-conductor cable or line.
2) The equivalent sources are converted into time-domain and then included in an EMTP representation of the system allowing a time-domain transient computation. this approach and follow by comparisons between induced overvoltages calculated by LIPS and results from the literature.

Tag(s):