Example of Over Current Protection Setting Using DIgSILENT PowerFactory

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

User Name

Home

Forum

NewNews Posts FAQ Calendar

Forum

Products ▾

Blogs Community

Forum Actions

Albanah Global LLC Forums

Training ▾

Support ▾

Students ▾

Consultancies ▾

Quick Links

Videos ▾

Password

Log in

Contact Us

Profile Advanced Search

PowerFactory Simulation and Analysis Software

Example of Over Current Protection Setting using DIgSILENT PowerFactory

Results 1 to 7 of 7

Thread: Example of Over Current Protection Setting using DIgSILENT PowerFactory Thread Tools

09-04-2010, 07:52 PM

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

Display

#1

1/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

smart Guest

Example of Over Current Protection Setting using DIgSILENT PowerFactory

This exercise shows how the PF can be used to calculate fault currents and set an overcurrent relay. The coordination graphs will be shown and tripping calculations will be displayed.

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

2/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

Last edited by smart; 09-04-2010 at 08:34 PM. Reply With Quote

#2

09-04-2010, 07:55 PM

smart Guest

Modelling of the network using PowerFactory

The first setp is to model the network. This is done by creating a new project.

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

3/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

Last edited by smart; 09-04-2010 at 08:36 PM. Reply With Quote

09-04-2010, 08:00 PM http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

#3 4/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

smart Guest

Calculation of Maximum and Minimum Fault Currents

As known from basic power system theory that the maximum fault current occurs at network when we have three phase fault. The figure below shows the result when parameters are defined in the PwerFactory model. The maximum fault current = 875 A as expected.

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

5/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

The minimum fault current = 758 A as expected

Last edited by smart; 09-04-2010 at 08:37 PM. Reply With Quote

09-04-2010, 08:18 PM http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

#4 6/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

smart Guest

The next step is to define the protection relay. Right click below the transformer and select New Devices -----> Relay Model

At Relay Type click Select Global Type http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

7/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

This will take you to library as shown in figure below. Choose the following relay as an example in this exercise. http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

8/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

Other relays can be used if desirable. Library ----> Relays ----> Relays ----> select then Overcurrent Relays ----> GE Alstom ----> MCGG Series ----> MCGG-22.

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

9/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

Last edited by smart; 09-04-2010 at 08:40 PM. Reply With Quote

#5

09-04-2010, 08:29 PM

smart Guest

Now it is time to define the CT for this relay Click on Create CT as shown below

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

10/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

11/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

Then choose currnet ratio ----> write 800 A in primary. Click OK

Last edited by smart; 09-04-2010 at 08:31 PM. http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

12/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

Reply With Quote

#6

09-04-2010, 08:47 PM

smart Guest

Now we need to display the rely using colour. Click on colour map as shown below.

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

13/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

Then from drop down menu select Relays, Current and Voltage Transformers as shown

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

14/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

15/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

When you click OK, the SLD shows now the line in Red where relay is connected.

Reply With Quote

09-04-2010, 09:01 PM

#7

smart http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

16/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

Guest

We need now to create the graph for the protection devices. Right click on the SLD where the relay is connected as sown below. Then select Create Time-Overcurrent Plot.

The log graph appears as another sheet as shown below.

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

17/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

We can also click right on the graph and add the Transformer Damage Curve as shown.

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

18/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

Colour of Transformer Damage Curve can be chosen as shown below.

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

19/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

We can also select the voltage base for displaying the graphs, as shown below.

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

20/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

There is also of course option to display the fault current (875 A) in different colour (blue) and also the tripping time of relay (1.357 s) for that fault current.

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

21/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

Reply With Quote

Quick Navigation

PowerFactory Simulation and Analysis Software

Top

« Overview of PowerFactory Functions | National Grid of UK publishes 2011 Seven Year Statement using DIgSILENT PowerFactory » Thread Information

There are currently 1 users browsing this thread. (0 members and 1 guests) http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

22/23

30 4 2014

Example of Over Current Protection Setting using DIgSILENT PowerFactory

Similar Threads

DIgSILENT StaionWare, The Powerful Protection Management Software

Replies: 1

By Admin in forum StationWare Protection Management Software

Details of Last Post: 06-01-2012, 04:38 PM

DIgSILENT PowerFactory Protection Functions

Replies: 5

By Admin in forum PowerFactory Simulation and Analysis Software

Bookmarks

Digg del.icio.us StumbleUpon

Details of Last Post: 23-02-2010, 08:42 AM

Posting Permissions

You may not post new threads You may not post replies You may not post attachments You may not edit your posts

Google

BB code is On Smilies are On [IMG] code is On [VIDEO] code is On HTML code is Off Forum Rules

Contact Us Home Archive Top Useful Links : Home Page | Contact Us | Registration | PowerFactory | News | Sectins

All times are GMT +4. The time now is 12:16 PM. All Rights Reserved to Albanah Global L.L.C

http://www.albanah.org/ss/showthread.php?228-Example-of-Over-Current-Protection-Setting-using-DIgSILENT-PowerFactory&s=c053e42d6d74e95bc505cc3af665b46c

23/23