×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

neplan

neplan

(OP)
Neplan users, Could you actually do more than HVDC transmission with converters in Neplan? I'd like to have a decent uncontrolled 6 pulse rectifier connected to a LV bus bar feeding a resistor.  

b.t.w. Whats is the difference between simple and 3p-converters?

Neplan version: 5.2.4

RE: neplan

Actually the DC components can only be used in HVDC systems.
I asked BCP many times to implement dc systems but I'm still waiting.

What kind of studies are you carrying out?
Maybe we could find an alternative solution.

RE: neplan

(OP)
Alex,

I am trying to model a sample network with generators, a couple of transformers, CBs and some DC and AC consumers.
(Load flow, short circuit mostly)

How about DIgSILENT? I am actually evaluating both to see which one is worth buying. Any idea how much they cost?

Roobarb

RE: neplan

The load flow works also for dc systems even if batteries are not implemented.
Look:
1- open the HVDC example "multiterminal"
2- remove the inverters and Eq. grids in the bottom
3- add a DC load at a dc node
4- run LF

It works!

The short circuit is not implemented because is based on a IEC standard different from the EN60909. I've never tried the superposition method.

==================================

Neplan and DigSilent are direct competitors.
some years ago I bought Neplan because of the simplest user interface and because Digsi seemed to be heavier since based on a big database.
Both of them have bugs and both virtues.
I prefer Neplan and I have direct contacts with the producer.
They cost more or less the same, but it depends on the modules you are looking for.
Please contact your local seller.

RE: neplan

(OP)
Thanks for the tip.

How do you see where the error is actually from? For example when I run a simple self-made AC/AC converter I get the message:

...Start Analysis....
Iteration 1- Max. Mismatch at Equation: 43 = 1.#INF00e+000
Load Flow Calculation interrupted because of error.
...Assign Results....


No bus bar is red or nothing unusual can be seen in the whole system.

RE: neplan

On the other side, I have used DIgSILENT PowerFactory for 4 years and it is great. Like anything it takes a some work up front, but DIgSILENT has excellent technical support and has regular updates (several per year). As far as bugs go, my experience has been different, I can't recall too many problem at all.

I've had a look at Neplan too and I'm not sure the two products are in the same ballpark.

Regards,
AusPowEng

RE: neplan

I use Neplan since 1999 while one of our consultant uses Digsilent.
The GUI of Digs is more pretty but "heavier" than Neplan.

One of the advantages of Neplan is the automatic visualization of the regulator initialization. Digsi is very far from that!
On the other hand, Digsi implements also the EM transient up to some kHz (not useful for lightning!!) while neplan is still implementing Simpow of ABB.

with Neplan I can build a regulator for every component of the system, and digsi?

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources