Talk:Key:compensator
Shunt reactor
Doesn't shunt reactors look like a transformer with no secondary? At least that's what they call them here in Norway. Gazer75 (talk) 15:51, 5 May 2022 (UTC)
- Good question. I guess not always according to the picture in compensator=shunt_reactor, aren't you? Fanfouer (talk) 15:57, 5 May 2022 (UTC)
- The old explanation used a transformer looking image with no secondary, and it looks like the wast majority of them look like that. Doing a picture search shows most looking like a transformer. Documents from ABB and Siemens show the transformer looking devices. Really wish we had someone working in the industry to help us with the more advanced parts. Gazer75 (talk) 16:09, 5 May 2022 (UTC)
- What old explanaition are you referring to? It's true I missed the transformer box casing for the heavier of them, I'll make another review this weekend.
- I also plan to finish the French translation as to get in touch with transmission network operator staff there. Some engineer may be interested to review this documentation and provide useful links Fanfouer (talk) 09:12, 6 May 2022 (UTC)
- Look at the old page version. https://wiki.openstreetmap.org/w/index.php?title=Tag:power=compensator&oldid=1391249 The first one listed under compensator values section. I've tried to find documentation of those round things in the picture being referred to as shunt reactors and I can't. The article on wikipedia using this image is actually talking about a current limiting reactor. https://en.wikipedia.org/wiki/Current_limiting_reactor This is AFAIK a different thing no? Gazer75 (talk) 16:03, 6 May 2022 (UTC)
- It is true the old documentation mention it and I restablished this information is the current page, with disambiguation about power transformers.
- However, shunt reactors aren't intended for short-circuit limitation (despite written in wikipedia about the picture), a series reactor is. Used picture definitely shows a shunt reactor, the neutral point on the foreground is common between three phases so it's not a series reactor. Fault or short-circuit currents are mentioned on compensator=series_reactor page.
- Thank you for mentioning this, it's the right way to improve the documentation Fanfouer (talk) 22:12, 6 May 2022 (UTC)
- After doing some more research these are air core dry reactors. The ones that I'm more familiar with, that looks like a transformer, are oil immersed. Guessing the transformer looking ones take up less space.
- Some documents that explains: https://www.gegridsolutions.com/products/brochures/grid-pea-l3-acr-0584-2017_04-en.pdf https://trench-group.com/3d-flip-book/air-core-shunt-reactors/ Gazer75 (talk) 08:56, 9 May 2022 (UTC)
- Look at the old page version. https://wiki.openstreetmap.org/w/index.php?title=Tag:power=compensator&oldid=1391249 The first one listed under compensator values section. I've tried to find documentation of those round things in the picture being referred to as shunt reactors and I can't. The article on wikipedia using this image is actually talking about a current limiting reactor. https://en.wikipedia.org/wiki/Current_limiting_reactor This is AFAIK a different thing no? Gazer75 (talk) 16:03, 6 May 2022 (UTC)
- The old explanation used a transformer looking image with no secondary, and it looks like the wast majority of them look like that. Doing a picture search shows most looking like a transformer. Documents from ABB and Siemens show the transformer looking devices. Really wish we had someone working in the industry to help us with the more advanced parts. Gazer75 (talk) 16:09, 5 May 2022 (UTC)
Thyristor-controlled reactor
Seems we are missing this form of compensation. Hasle substation in Norway is using this to compensate for the cables in the Oslofjord on the Hasle-Rød 420kV line. ABB has a paper on it. https://library.e.abb.com/public/11af128d49e5a418c12576740036fc2b/A02-0104%20E.pdf So because of this its only inductive.
Another research document from SINTEF that I found lists the Mvar values with positive and negative prefixes for compensators, it also includes Hasle TCR. Look at page 12 in https://www.sintef.no/globalassets/project/utnyttelse/workshops/svr.pdf
This might also be a good reason to either use two values or operate with a range for ratings compensators. Gazer75 (talk) 16:38, 14 September 2022 (UTC)