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Home > Archive > Electrical Engineering > June 2007 > Overvoltage of shunt capacitors
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Overvoltage of shunt capacitors
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| kelfookf 2007-06-25, 8:25 pm |
| I am reading book about voltage stability, it mentions that with
applie of shunt capacitors,
overvoltage will happen at the stable part of the system as voltage
collapse results in system breakup.
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| Rheilly Phoull 2007-06-26, 9:25 am |
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"kelfookf" <kelfookf@gmail.com> wrote in message
news:1182816193.366911.148940@i38g2000prf.googlegroups.com...
>I am reading book about voltage stability, it mentions that with
> applie of shunt capacitors,
> overvoltage will happen at the stable part of the system as voltage
> collapse results in system breakup.
>
Gobbledegook.
--
Cheers .......... Rheilly P
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| Don Kelly 2007-06-29, 3:25 am |
| "Rheilly Phoull" <rheilly@bigpong.com.au> wrote in message
news:4680db51$0$12809$5a62ac22@per-qv1-newsreader-01.iinet.net.au...
>
> "kelfookf" <kelfookf@gmail.com> wrote in message
> news:1182816193.366911.148940@i38g2000prf.googlegroups.com...
> Gobbledegook.
>
> --
> Cheers .......... Rheilly P
The whole purpose of such capacitors is to produce reactive required by the
load. In the case of loss of load, there can be overvoltages due to these
capacitors. Look at a line with inductive impedance and a load at the end.
Put reactive compensation at the load end and look at the voltage. Now drop
the load and keep the reactive compensation and see what happens to the
voltage.
In some cases it can be quite drastic- near series resonance.
--
Don Kelly dhky@shawcross.ca
remove the X to answer
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