Dear Guest, Please Register to Download Free Seminar Reports and PPT of each topic. The Download link will be visible only after the registration.Please search the topic before posting.

Please click the Facebook Like Button if you are satisfied

 Subscribe To Get Latest Seminar Reports and PPT

Receive all seminar updates via Facebook. Just Click the Like Button Below


Custom Search

surge current protection using superconductor

Huge Collection of Electrical & Electronics Seminar Topics, Reports and PPT

surge current protection using superconductor

Postby shashidhar » Thu Jan 19, 2012 2:42 pm

surge current protection using superconductor
Active User
Posts: 4
Joined: Thu Jan 19, 2012 2:20 pm

Re: i need the details of this seminar topic

Postby Prasanth » Thu Jan 19, 2012 3:06 pm

In the resistive SCFCL, the super conductor is directly connected in series with the line to be protected. To keep it superconducting, it is usually immersed in a coolant that is chilled by a refrigerator. Current leads are designed to transfer as little heat as possible from the outside to the coolant.
In normal operation, the current and its magnetic field can vary but temperature is held constant. The cross section of super conductor is such as to let it stay below critical current density, since its receptivity is zero in this regime; the impedance of the SCFCL is negligible and does not interfere with the network. All the same the superconductor’s impedance is truly zero only for dc currents. The more common as applications are affected by two factors. First, the finite length of the conductor produces a finite reactance which however can be kept low by special conductor architecture. Second a superconductor is not loss free in ac operation, the magnetic as field generated by the current produces so called ac losses basically, just eddy current losses. These are heavily influenced by the geometry of the conductor and can be reduced by decreasing the conductor dimension transverse to direction of local magnetic field. They barely contribute to total SCFCL impedance but dissipate energy in superconductor, thus raising cooling costs.

In case of a fault the inrush of current and magnetic field take the super conductor into the transition region, between zero resistance and normal receptivity. The fast rising resistance limits the fault current to a value some where between the nominal current and what ever fault current otherwise would ensure. After some time, perhaps a tenth of seconds, a breaker will interrupt the current.
The behavior of resistic fault current limiter is largely determined by the length of the superconductor and the type of material used for it.
You do not have the required permissions to download the files attached to this post. You must LOGIN or REGISTER to download these files.
User avatar
Site Admin
Posts: 481
Joined: Sat May 28, 2011 6:29 pm

surge current protection using superconductor

Postby samtroll » Mon Feb 13, 2012 10:04 am

Can you send me PPT on topic surge current protection using superconductor please???????????
Posts: 1
Joined: Mon Feb 13, 2012 9:44 am

Re: surge current protection using superconductor

Postby Pavankumar11890 » Sun Feb 23, 2014 8:24 pm

Sir can u send me electrical electronics based seminars
Posts: 1
Joined: Sun Feb 23, 2014 8:10 pm

Re: surge current protection using superconductor

Postby aniannapoorna » Mon Apr 21, 2014 5:48 am

send me ppt on surge current protection using superconductors plz........
Posts: 1
Joined: Mon Apr 21, 2014 5:36 am

Re: surge current protection using superconductor

Postby mukulchauhan » Fri Jan 26, 2018 11:52 am

Sir can u send me electrical electronics based seminars
Posts: 1
Joined: Fri Jan 26, 2018 11:36 am

Return to Electrical & Electronics Seminar Topics