Use of series reactor for limiting the fault level 2

[RAgrawal]

Use of series reactors is one of the very common mode for fault level containment, but reactor can pose stability problem to the power system because it increases the over all reactance of the system. what do u say about the pros & cons of the reactor?

 

[jbartos]

Suggestion: The reactor manufacturers suggest reactor location within power distribution system where they are most effective with minimal impact on the system stability. Usual locations are in the power supply feeder(s), e.g. generator feeder(s), or utility feeder(s). The main concern of in line reactors is the voltage drop rather then stability. If one can avoid them by proper design of generator and transformer impedances, one will have the better power distribution system.

 

[electricpete]

There was an article in the Doble Proceedings several years back about adding reactors on the neutrals of certain transformers to reduce the maximum thru-fault that the transformer might be exposed to. I think the author was Puget Sound Power.

 

[jbartos]

Suggestion: Visit

http://www.pjm.com/transmission/trans_exp_plan/downloads/20010301_series_reactor.pdf

http://www.capacitor.com.tw/high.htm

etc. for more info

 

[jbartos]

Suggestion: Visit

http://www.thomasregister.com

and type Reactors: Line/Load under Product or Service, which will return 12 companies to approach to

 

[sykimk]

I had an experience to use current limiting reactors with high impedance in the power distribution system of oil refinery complex. In conclusion, I decided to use fault current limiters instead of current limiting reactors, which cause voltage instability of power system.
When I conducted power system studies (Short Circuit Currents and Load Flow Studies), voltage profiles could not be maintained within the acceptable level due to high impedance of the reactors (it requires over 20% of impedance), and it did not allow satisfactory active power flows due to excessive reactive power losses.
Of course, it is no doubt that using CLR is a good option to reduce short circuit contribution, however CLR application shoud be carefully considered by conducting short circuit current calculaitons, load flow studies, etc.
In addition, I believe that main concern of CLR application is voltage dips under various operating conditions as already posted by "jbartos"