You might want to look at ETAP tutorials to get an idea of the required info.
Also, since you are an EIT, why not ask your supervising eng. for pointers? You can always ask questions, in fact that's the right way to do it and as a future professional your are expected to do so to expand your...
Try the following link:
http://www.gai-tronics.com/literature/industrial/gtc070503gm8000.pdf
You can even call the guys there, I am sure they can help.
Viking, you wrote: "A transient fault caused the fuse to burn out which caused a short that tripped the whole feeder."
If there was no other fuse between the feeder breaker and the fault, it is expected that the breaker will clear the fault. If there was one, then as suggested by dpc, you...
Timm,
Usually you will have more than one LV feeder connected to the main transformer and therefore you want the LV breaker to operate before the main breaker (That's coordination). Interesting to note that you now have a fuse protecting the transformer not a breaker. Different configuration...
Key words here is "protection coordination". If you are not familiar with the concept (and the questions you are asking tend to show that), I would suggest that you either ask experienced people to coach and review your work or subcontract the task. In some countries, arc flash studies are to...
You might want to look at the following org:Engineer without borders. I know some colleagues who worked with them in Quebec. You might find a way to merge engineering with idealism. You should find interesting projects and you will have a chance to refresh your knowledge...
How much precision do you need? What instrument(s) do you have?
Measure the Rdc of the electromagnet and find the Rdc per meter of conductor (measure or get it from reference tables). The ratio gives you the total lenght. This should give you a good estimate.
That's the kind of problem that should be covered by your maintenance contract with ETAP.
Send that directly to them. They should solve the problem rapidly.
Distribution system losses level should be less than 10% at peak (typical average 3-4% in North America). How is your network behaving in its normal configuration? What is your MV level?
Be aware that some software will switch load model when voltage reaches a certain threshold. We recently...
Harmonics studies are tricky. I always use experienced teams to make measurements and I try to have measurements prior or without the new equipment to get a proper assessment of the background harmonics especially if I am designing the filters. Depending on the supply network, there is a risk...
You can check the web for references. There are a number of good books you might be able to get at your school or company library.I would have given you some title but they are likely out of the market since I finish eng school 35 years ago.
I don't use ETAP so I am not aware of their training...
We perform network impact studies and distributed generation (DG) modeling and so far, most DC coupled generation we worked with, had fault around 1.05-1.1 current pu. I think there was one manufacturer that mentioned 1.2 p.u. but it was never confirmed. For a manufacturer view it makes sense...
There are a lot of missing data that you forgot to consider/show. How did you model your motor? Nominal voltage? PF? all that will influence your load-flow. What is the impedance of your transformer? size?
I would recommend that you do the load-flow by hand and then check with your simulation...
Many wind turbine manufacturers provide PSS/E model to use for your studies. You should ask them directly.
Otherwise, pick a generic model close to the technology.
The 5 is the result of the architect's quote maths
The 7 is actual maths
We now know why architectural projects are over budget most of the time!
Daniel D
Based on my experience, US companies will sponsor and get you a green card after they decided to hire you. I was approached by recruiting people and in the final negotiation stage it was confirmed that their legal dept would take care of the paper work required for non US citizen to be able to...
In Quebec, a single fuse cutout is enough but prior to grounding, the lineman will test for voltage to make sure there is no alternate voltage source like a customer generator. For us, a single open point is enough if it could be confirmed visually.
Daniel
A good old single line diagram with proper color coding showing level of usage or available margin is always appreciated.
Most simulations softwares allow you to produce them easily.
We will add a paragraph or two to introduce the scenarios and summarize the results highlighting the locations...
Solutions are not the same. What type of load are you supplying?
If you loose one of your 3 phase Tx then your capacity is down to 150 MVA for a year. If you loose a single phase, your are back at 300 MVA within 24 hrs. What is your design target? Is there a value in that?
You should compare...
