Wind turbine failure yesterday in NS, off-topic


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Nova Scotia Power is investigating why one of its wind turbines snapped in half Tuesday night in Grand Étang, Cape Breton.

There was a severe wind warning Tuesday night, but it's unclear if that had anything to do with the break. The power utility said it is still trying to determine the root cause.

CBC meteorologist Kalin Mitchell said peak wind gusts of 164 km/h were reported at the Grand Étang weather station between 9 a.m. and 10 a.m. this morning.

http://www.cbc.ca/news/canada/nova-scotia/grand-etang-wind-turbine-snaps-1.3921256

I don't know about anyone else but I'd be willing to bet the wind had something to do with it!
 

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There have been cases where the pitch controller for the blades has failed leading to an overspeed in high winds.  there is a video on youtube somewhere that shows one tearing itself apart.

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2 hours ago, boestar said:

There have been cases where the pitch controller for the blades has failed leading to an overspeed in high winds.  there is a video on youtube somewhere that shows one tearing itself apart.

Sure, maybe.  I just found the statement about it being unclear whether the 164 km/h winds had anything to do with the break to be particularly moronic.  Whatever the flaw or fault surely the wind had something to do with the failure happening at that time.

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Just now, vanishing point said:

Just think of the amount of power being generated right up to the point of self-destruction....;)

Just think about the number of birds and bats killed up to that moment. http://www.audubon.org/news/will-wind-turbines-ever-be-safe-birds

 http://savetheeaglesinternational.org/new/us-windfarms-kill-10-20-times-more-than-previously-thought.html  http://news.nationalpost.com/news/canada/wind-farms-causing-thousands-of-bats-to-die-of-collapsed-lungs-annually-in-alberta-top-bat-expert

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I wonder how these blades compensate for ice accrual, similar to aircraft propeller blades? I realize the blades feather when the wind is too strong/unfavourable we,, but say in freezing rain conditions, do they compensate for imbalance when they start up again? 

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24 minutes ago, st27 said:

I wonder how these blades compensate for ice accrual, similar to aircraft propeller blades? I realize the blades feather when the wind is too strong/unfavourable we,, but say in freezing rain conditions, do they compensate for imbalance when they start up again? 

ScreenShot002.jpg

This is from an article on a blog

The entire rationale for wind turbines is to stop global warming by reducing the amount of CO2 being returned to the atmosphere from the burning of fossil fuels.

In the attached picture, recently taken in Sweden, freezing cold weather has caused the rotor blades of a wind turbine to ice up bringing the blades to a complete stop.

To fix the “problem” a helicopter is employed (burning aviation fuel) to spray hot water (which is heated in the frigid temperatures using a truck equipped with a 260 kW oil burner) on the blades of the turbine to de-ice them.

The aviation fuel, the diesel for the truck, and the oil burned to heat the water, could produce more electricity (at the right time to meet demand) than the unfrozen wind turbine could ever produce. (Before it freezes up again).

The attached picture is a metaphor of the complete insanity of the climate change debate.

In decades to come this one photo alone with sum up an era of stupidity, when rational thought, logic and commonsense was abandoned and immense wealth and resources needlessly sacrificed.

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At the CAW "Training and Family Center" (or whatever it's called), they decided

to put up a wind turbine on their property next to the town of Port Elgin. It had two

effects. The 1st was it made the town people so mad they had marches down the

main street protesting against it. The 2nd was they lost half of their parking lot in

the winter due to the blades shedding ice onto the cars below. Even today, several

years later, there are still "Shame on you CAW" signs to be seen in Port Elgin.

 

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1 hour ago, Kip Powick said:

The attached picture is a metaphor of the complete insanity of the climate change debate.

In decades to come this one photo alone with sum up an era of stupidity, when rational thought, logic and commonsense was abandoned and immense wealth and resources needlessly sacrificed.

Mr. Trump will make sure that changes.

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3 hours ago, vanishing point said:

If you guys have a better solution to create electricity to satisfy the ever increasing demands being put on the system by everyone

Keep the brand new coal plants that we have.

They are efficient and clean but with the costs that the Dippers in Alberta just added via taxes they are much more expensive.

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Well bully for you.

Alberta has not had a smog day ever.

In my memory all air quality advisories have been issued due to forest fires in the region.

and our coal generating plants are still operating.

Quote

 

 

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With respect, what's the point of debating energy technologies from an environmental pov when we should already know that any, or all of them are unsustainable and completely bad news?

I laugh at people who would claim owners of F - 150 4X4's, the so -called gas guzzlers, are a big part of the overall problem with energy production, supply, pollution and sustainability. But when said whiner is asked why someone would want to give up the comfort, safety and functionality of a pickup truck, especially in light of the fact most of the complainers have growing families and fleets of vehicles that are used to propel their generally fat bodies around town, the response is always defensive and illogical.

 

 

 

  

 

 

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On 2017-01-06 at 7:45 AM, Kip Powick said:

ScreenShot002.jpg

This is from an article on a blog

The entire rationale for wind turbines is to stop global warming by reducing the amount of CO2 being returned to the atmosphere from the burning of fossil fuels.

In the attached picture, recently taken in Sweden, freezing cold weather has caused the rotor blades of a wind turbine to ice up bringing the blades to a complete stop.

To fix the “problem” a helicopter is employed (burning aviation fuel) to spray hot water (which is heated in the frigid temperatures using a truck equipped with a 260 kW oil burner) on the blades of the turbine to de-ice them.

The aviation fuel, the diesel for the truck, and the oil burned to heat the water, could produce more electricity (at the right time to meet demand) than the unfrozen wind turbine could ever produce. (Before it freezes up again).

The attached picture is a metaphor of the complete insanity of the climate change debate.

In decades to come this one photo alone with sum up an era of stupidity, when rational thought, logic and commonsense was abandoned and immense wealth and resources needlessly sacrificed.

Wow. That is some serious misinformation. One could easily counter each and every point in this write up from Craig Kelly. But most folks can't be bothered. 

"The entire rationale for wind turbines is to stop global warming"? Seriously?

Immense wealth and resources needlessly sacrificed? So the world is for us to consume, the hell with the future. Scary that he is an MP. But then again most MP's can't see beyond their brief term in office. We shouldn't be surprised. :(

I know that "in decades to come" our children will look back at our era of stupidity being the waste of our non renewables, not by how much money we could have made burning them.

Back to the topic.... The wind turbines that operate in freezing precipitation obviously need a way of deicing the blades. I would suspect that the lack of deicing capability has been an economical/probability equation, not unlike the CAT III capability needed for every major Canadian airport. :lol:

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Don't remember seeing both a Winter storm warning and a "Smog Warning" this time of year.

Winter storm hits Atlantic Canada, smog warning still in effect in Quebec

A man shovels out after a winter storm hit St.John's. N.L., Sunday, Jan.5, 2014. (Paul Daly / THE CANADIAN PRESS)
CTVNews.ca Staff
Published Sunday, January 8, 2017 9:48AM EST

Hazardous winter conditions are expected in store for the East Coast, warns Environment Canada.

A low pressure system carried a winter storm into Nova Scotia early Sunday, bringing with it the possibility of up to 40 cm of snow.

A winter storm warning issued Saturday remains in effect for Prince Edward Island, parts of Nova Scotia and Newfoundland, with more snow expected throughout the day.

Snow or ice pellets will change to flurries in the morning over most of Nova Scotia. Northern areas could see an additional 5 to 10 cm of snow.

Between 10 and 20 cm of snow are expected in Newfoundland.

Prince Edward Island can expect up to 15 cm of snow.

Elsewhere in the country, between 10 and 15 cm of snow is expected in southwestern Ontario.

ADVERTISING
 

A smog warning remains in effect for Montreal, Laval and much of the surrounding area.

Environment Canada issued the warning Saturday and urged residents to limit use of fireplaces and wood-burning stoves.

They also warned that exposure to smog can be dangerous to children with asthma and those with respiratory issues and heart disease. Anyone suffering from those ailments is advised to avoid intense physical activity outdoors while the warning is in effect.  http://weather.gc.ca/warnings/index_e.html?prov=sqc

Parts of B.C. can expect considerable snowfall, with up to 15 cm in the forecast for metro Vancouver by Monday morning.

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On 1/7/2017 at 5:04 AM, deicer said:

Ontario hasn't had a smog day since they shut down coal generation. 

Here's the alternative...

http://www.popsci.com/why-is-smog-in-china-so-bad

No doubt the airquality is better but as far as no smog days, that is not quite accurate. http://www.airqualityontario.com/aqhi/advisories_stats.php  http://www.lfpress.com/2016/05/24/environment-canada-issues-first-smog-alert-for-southwestern-ontario

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By allowing ever greater numbers of immigrants into the Province on a continuing basis the powers-lo-be have positioned themselves as the parties most responsible for Ontario's growing pollution problems and they ought not to be taxing me to sooth their corrupted souls, or on the basis of other false pretenses. 

 

 

 

 

 

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4 hours ago, Malcolm said:

I stand corrected.  However, there was only one in Peel region last year when in the past, there would be multiple events throughout the year.  Justified, in my opinion.

Edited to add the following table...

http://airqualityontario.com/history/aqi_advisories_stats.php?t=1

Edited by deicer
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