Transformer fire in BPA Keeler substation Hillsboro Oregon.
Transformer fire in BPA Keeler substation Hillsboro Oregon.
(OP)
https://www.youtube.com/watch?v=FTzrfOJkKk0
Several Youtube videos of this fire. Black smoke very noticeable where gray skys are common.
BPA seems t have a lot of transformer fires.
Several Youtube videos of this fire. Black smoke very noticeable where gray skys are common.
BPA seems t have a lot of transformer fires.






RE: Transformer fire in BPA Keeler substation Hillsboro Oregon.
RE: Transformer fire in BPA Keeler substation Hillsboro Oregon.
They are rather hard to protect as you can't apply diff. protection to them. It is on a LBS sharing a breaker with two switched cap banks. No reports of even a noticeable dip so the breaker must have opened quick.
I'm surprised the reactor was live mid-day. Keeler is the Westmost 500kV sub in the Portland area with power going through other nearby subs first where there are loading reactors on the long lines. The problem at Keeler is usually not enough VARs.
I'm also not recalling many TX fires for BPA.
RE: Transformer fire in BPA Keeler substation Hillsboro Oregon.
RE: Transformer fire in BPA Keeler substation Hillsboro Oregon.
RE: Transformer fire in BPA Keeler substation Hillsboro Oregon.
RE: Transformer fire in BPA Keeler substation Hillsboro Oregon.
RE: Transformer fire in BPA Keeler substation Hillsboro Oregon.
RE: Transformer fire in BPA Keeler substation Hillsboro Oregon.
A low intensity fault can heat the oil above the boiling point and the ejected oil vapor ignites.
A high intensity fault can cause destruction of the case and spray super-heated oil that catches fire on contact with the air.
RE: Transformer fire in BPA Keeler substation Hillsboro Oregon.
Many years back came across failures in two 50 MVA 3 phase 420 kV shunt Reactors. It was failure at middle of winding height between phases. Line was at the middle of winding. Heavy gas formation and tank bulging and rupture,but no fire.
Best tutorial on the subject- CIGRE Brochure No.537-2013 Guide for transfoirmer Fire Safety Practices by WG A2.33 (139 pages)