November 5, 2007

Exploding wind turbine transformer

In response to a Nov. 1 query from a concerned citizen for information concerning reports of an explosion in one of the transformers at the "Maple Ridge" wind energy facility on Tug Hill, N.Y., and a truck working in the middle of the night at the base of each turbine, steven_blow@dps.state.ny.us wrote on Nov. 2:
We've checked out the situation and there appears to be no truth to the report.
But janasca@gw.dec.state.ny.us (Jack Nasca) wrote on Nov. 5:
We spoke to the operators at the Maple Ridge site and have learned:

On July 4, a single pad mounted grounding transformer located at the Rector Road substation exploded and was rendered inoperative. This was one of ten such transformers in the substation. No cause was determined, and the transformer has been sent back to the manufacturer for an analysis to identify the cause. Lightning was not a factor. None of the other nine grounding transformers at the substation had any problems, and there have been no incidents at turbine base transformers.

Unrelated to the above, a program of annual preventative maintenance of transformers at the base of the turbines was conducted over the summer. This included an analysis of the mineral oil used as a coolant. A gas analysis of the cooling oil was conducted, which indicated elevated levels of certain gases in about 30% of the transformers, one of which was hydrogen. A contractor specializing in purging gases from transformer cooling oil was hired to remove the gases identified in the analysis. Because the contractor was very busy (apparently this occurs with some regularity with transformers in any type of transmission facility), they worked 24/7 for a 2 ½ week period to complete the task. So at some point they were working at "midnight." The process involves withdrawal of the oil from the transformer, piping it to a truck with the purging equipment, capture and collection of the gas for disposal off-site, and returning the oil to the transformer. It was stated that there is no atmospheric release of gases from this process.
wind power, wind energy, wind turbines

November 2, 2007

A Forsaken Garden

by Algernon Charles Swinburne

 

 

In a coign of the cliff between lowland and highland,

At the sea-down’s edge between windward and lee,

Walled round with rocks as an inland island,

The ghost of a garden fronts the sea.

A girdle of brushwood and thorn encloses

The steep square slope of the blossomless bed

Where the weeds that grew green from the graves of its roses

Now lie dead.

 

The fields fall southward, abrupt and broken,

To the low last edge of the long lone land.

If a step should sound or a word be spoken,

Would a ghost not rise at the strange guest’s hand?

So long have the gray bare walks lain guestless,

Through branches and briers if a man make way,

He shall find no life but the sea-wind’s, restless

Night and day.

 

The dense hard passage is blind and stifled

That crawls by a track none turn to climb

To the strait waste place that the years have rifled

Of all but the thorns that are touched not of time.

The thorns he spares when the rose is taken;

The rocks are left when he wastes the plain.

The wind that wanders, the weeds wind-shaken,

These remain.

 

Not a flower to be prest of the foot that falls not;

As the heart of a dead man the seed-plots are dry;

From the thicket of thorns whence the nightingale calls not,

Could she call, there were never a rose to reply.

Over the meadows that blossom and wither

Rings but the note of a sea-bird’s song;

Only the sun and the rain come hither

All year long.

 

The sun burns sear, and the rain dishevels

One gaunt bleak blossom of scentless breath.

Only the wind here hovers and revels

In a round where life seems barren as death.

Here there was laughing of old, there was weeping,

Haply, of lovers one never will know,

Whose eyes went seaward a hundred sleeping

Years ago.

 

Heart handfast in heart as they stood, “Look thither,”

Did he whisper! “Look forth from the flowers to the sea;

For the foam-flowers endure when the rose-blossoms wither,

And men that love lightly may die — but we?”

And the same wind sang, and the same waves whitened,

And or ever the garden’s last petals were shed,

In the lips that had whispered, the eyes that had lightened,

Love was dead.

 

Or they loved their life through, and then went whither?

And were one to the end — but what end who knows?

Love deep as the sea as a rose must wither,

As the rose-red seaweed that mocks the rose.

Shall the dead take thought for the dead to love them?

What love was ever as deep as a grave?

They are loveless now as the grass above them

Or the wave.

 

All are at one now, roses and lovers,

Nor known of the cliffs and the fields and the sea.

Not a breath of the time that has been hovers

In the air now soft with a summer to be.

Not a breath shall there sweeten the seasons hereafter

Of the flowers or the lovers that laugh now or weep,

When as they that are free now of weeping and laughter,

We shall sleep.

 

Here death may deal not again for ever;

Here change may not come till all change end.

From the graves they have made they shall rise up never,

Who have left nought living to ravage and rend.

Earth, stones, and thorns of the wild ground growing,

While the sun and the rain live, these shall be;

Till a last wind’s breath upon all these blowing

Roll the sea.

 

Till the slow sea rise, and the sheer cliff crumble,

Till terrace and meadow the deep gulfs drink,

Till the strength of the waves of the high tides humble

The fields that lessen, the rocks that shrink,

Here now in his triumph where all things falter,

Stretched out on the spoils that his own hand spread,

As a god self-slain on his own strange altar,

Death lies dead.

October 31, 2007

Capacity calculations for wind on the grid

Operators of the electrical grid have to know how much power capacity they can county on when they need it. This creates a problem for wind energy, because only the wind determines its production rate and time. It's largely chance that wind and demand might coincide in any dependable way. Therefore, wind is largely a sideshow, or even an added burden, to the real work of the grid.

Here is how different grid operators look at wind power's actual value in their planning, as compiled by the Utility Wind Integration Group ("Wind Power and Electricity Markets", information compiled through September 21, 2007). For "Capacity Calculation":
  • PJM (Mid-Atlantic plus northern IN and IL) initially assigns a value of 20% of the rated capacity and then uses the average output over the previous 3 years ot 4, 5, and 6 o'clock p.m. from June through August.

  • NYISO uses the average capacity factor between 2 and 6 o'clock p.m. from June through August and between 4 and 8 o'clock p.m. from December through February.

  • ISO-NE (New England) uses the overall capacity factor.

  • Ontario IESO uses 10% of the rated capacity for long-term (e.g., seasonal) forecasting and 0% (zero) for 1 to 34 days ahead.

  • MISO (Midwest) gives wind a 15% capacity value for transmission planning purposes.

  • SPP (KS, OK, TX panhandle) uses the level of output equalled or exceeded for 85% of the top 10% load hours.

  • ERCOT (TX) uses 8.7% of the rated capacity in capacity reserve margin calculations.

  • CAISO uses the average monthly output over the previous 3 years between 12 and 6 o'clock p.m. from May through September.

  • Alberta Electric System Operator assigns a 20% value.
wind power, wind energy, wind farms, wind turbines

October 29, 2007

Bush Wants Another $46 Billion for Wars

[headline and blurb from Ironic Times]

Dems pledge to whine “even louder” before giving it to him.

October 27, 2007

Corrections re: wind turbine foes

A story late last month by Lydia DePillis from Greenwire stated that Lisa Linowes organized the meeting in May 2005 at which a national coalition (namely, National Wind Watch [NWW]) against industrial wind energy development was formed. Whether that statement was due to confusion on the reporter's part or misinformation provided by Lisa, the fact is that Lisa was but one of the dozens of invited guests at that meeting, which was conceived and organized by David Roberson.

A story early this month by Kristi Swartz in the Palm Beach (Fla.) Post stated that the Industrial Wind Action Group (IWAG) was founded in 2005. Again, whether that statement was due to the reporter's confusion or misinformation provided by Lisa, the fact is that National Wind Watch, not IWAG, was founded in 2005. Lisa Linowes left National Wind Watch (after a failed coup followed by stealing NWW's web site and domain) to work independently (as IWAG) in 2006.

The coincidence that two reporters at the same time made similar incorrect statements about Lisa Linowes and National Wind Watch strongly suggests that Lisa was indeed the source of these errors.

wind power, wind energy

October 18, 2007

Huge project takes huge parts

Report from the construction of the Smoky Hills Wind Farm in Kansas, on hills on both sides of state highway 14 south of Lincoln:

The crane standing atop a hill across the Ellsworth County line north of Interstate 70 soared 315 feet into the air.

Nearby stood two white tubes, one stacked on the other. These made up the bottom two sections of a four-section tower. When this and more than 50 other towers like it are operational, the Smoky Hills Wind Farm will go on-line ...

The wind farm is being developed by TradeWind Energy of Lenexa under the ownership of Enel North America, Inc., a subsidiary of Enel, SpA, the third largest utility in the world.

The components [that electricians, engineers, construction employees and others] are putting together to make the wind turbines are huge. For instance, each turbine will have three blades, each one 132 feet in length.

The towers, manufactured in Denmark, Canada and China, are shipped to the Gulf of Mexico, where they are loaded on rail cars and transported to Kanopolis, 10 miles to the south of the construction site.

Other information shared by [farmer, landowner (hosting 15 of the machines), and tour guide Richard Plinsky]:

• Ten special "low-boy trucks" were needed -- just to deliver the crane, which will hoist the tower components, including the nacelle or generation head, which holds the hub for the three blades.

• The turbines [are capable of producing] 1.8 megawatts of energy [sic -- megawatts are a measure of power], making them the largest producers in Kansas. The wind turbines at Spearville and Elk River, east of Wichita, are 1.5 megawatts.

• The cost of a finished turbine is between $3.5 and $4 million [$1.9-2.2 million per megawatt].

• Each base takes 500 cubic yards of concrete, which is poured 8 to 10 feet into the ground.

• Each tower has 77,000 pounds of reinforcement bar in the concrete. The towers stand 260 feet tall.

"It was such a large project that there was no way anybody local could handle it," Plinsky said.

• When construction started, about 140,000 gallons of water were needed daily to pour the concrete and build the roads. Plinsky said large amounts of water are still required to control the dust on the roads.

wind power, wind energy, wind farms, wind turbines, environment, environmentalism