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Author: e.rutovic
Type: Example
Downloaded: 1101 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: Model
Downloaded: 396 times
Date: 2012-06-18

CB_arc_CM

Description:
This is an interesting case of the study of arc-circuit interaction in case of the interruption of a short-line fault.The arc is represented by a composite Cassie-Mayr model and the line is represente... see mored as frequency-dependant.
The case shows the application of black-box arc modeling in the study of kilometric-line fault capability of a 420 kV circuit-breaker. By zooming on the arc current and voltage near current-zero, post-arc current and initial TRV may be visualized in both cases of clearing and thermal failure.

Tag(s): Example, Protection

Author: AdminEMTP-RV
Type: Document
Downloaded: 912 times
Date: 2012-06-18

Look what happens without EMTP-RV

Description:
This is a nice video about the switching of a shunt reactor (most probably 500 kV) with a Circuit-Switcher.
>A circuit-switcher is a SF6 load-break swith with no fault current breaking cap... see moreability. The load current, in this case around 150 A, is normally interrupted first by the 2 interrupters and then the disconnect will open to isolate the reactor.
What happened in this video:
1 - During the opening, an external flashover occurs on one of the chamber most probably because of the contamination;
2 - The other chamber can not withstand the whole voltage and reignites internally;
3 - The external flashover vanishes because an arc is established inside;
4 - The disconnect opens on the full load current;
5 - The arc burns freely in the air for some 10 seconds until it is self-extinguished or eliminated by a circuit-breaker operation.

Tag(s):

Author: AdminEMTP-RV
Type: Model
Downloaded: 227 times
Date: 2012-06-18

SW_tContr

Description:
This design introduces a contolled-closing switch very appropriate for asymetrical current or transient voltage studies during shunt-reactor/capacitor bank switching or fault creation.

This... see more is a contribution of Pierre Larivière from Hydro-Québec TransEnergie.

Tag(s): Protection