Hi all, I am looking at a site that is in need of around 800kVAr of correction. The site is connected to the grid at 11kV and has five 11kV/400V transformers. I would like to know the pros and cons of installing bulk correction at the HV level or five seperate controllers at the LV switchboards?
Any comments recommendations appreciated.
Ken
HV or LV correction?
Started by kens, Aug 18 2006 11:04 PM
2 replies to this topic
#1
Posted 18 August 2006 - 11:04 PM
An expert is one who knows more and more about less and less until he knows absolutely everything about nothing
#2
Posted 20 August 2006 - 09:19 PM
Hi Ken
While the concept of a single installation at the point of supply is appealing, there are a number of considerations to look at.
Best regards,
While the concept of a single installation at the point of supply is appealing, there are a number of considerations to look at.
- Price. I am not sure of the pricing of the MV gear at present, but expect that it may be a more expensive option than the LV correction.
- Correcting on the secondary side of the transformer will correct th load on the transformer and probably improve the effective capacity of the transformer substantially.
- MV correction may require a significant number of small steps to correct the whole plant and keep it within desirable limits.
- Resonance problems if the 11KV impedance is high and inductive.
Best regards,
Mark Empson | administrator
Skype Contact = markempson | phone +64 274 363 067
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#3
Posted 21 August 2006 - 04:17 AM
Thanks Mark
Ken
Ken
An expert is one who knows more and more about less and less until he knows absolutely everything about nothing
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