Category Archives: Emergency Power Systems

The Celestial Shooting Gallery, Part Four: “You Have Nothing to Worry About (click) Worry About (click) Worry About (click)…”

Stability Model of an experimental distribution grid

A stability map of a simple power grid. Each point on this image represents an operating state of a simple power grid consisting of a few generators. Bluish regions constitute stable working states, red unstable and ‘salt-and-pepper’ represent chaotic behavior. One can tune a grid for stability by controlling the phasing of generators and transformers on the grid and such settings suffice for day-to-day operations. It is difficult to decide where, or by how much, abnormalities such as geomagnetic storms might push a system into red, unstable regions, or, worse, salt-and-pepper regions where the system oscillates between states. It is easy to find cases on the map where chaotic regions lie very close to stable regions, indicating that the destabilizing push need not be large at all. James Thorp, Cornell University, published in IEEE Spectrum

People paid to worry about the North American power grid regard geomagnetic storms as “high impact, low-frequency” events, spawning the inevitable acronym: HILF. Low frequency, in that a geomagnetic storm as intense as May 1921, at 5,000 nano-Teslas/minute, or the 1859 Carrington Event, best guess: 7,500 nano-Teslas/minute, might not happen in our lifetimes, the lifetimes of our children, or even our grand children. If signature traces in Arctic ice core samples are correct, these are ‘500 year events.’ When it comes to deciding where to put that preventative maintenance dollar, storm-proofing Oklahoma elementary schools against EF 5 tornadoes seems a far more practical spend than the hardening of electrical grids against a half-theoretical event that might not even happen in 500 years.

What pulls planners up short is the high impact part: the utter god-awfulness of a power grid that crashes and which then can’t boot itself up. There is a self-referential dependency: fixing a dysfunctional power grid requires it to be functional, as key aspects of the manufacturing of transformers need electricity.

Nor can one expect the cavalry to ride in anytime soon, as the vast geographic reach of geomagnetic storms means that one strong enough to take down the North American grid may very likely take down Eurasian grids as well – entire hemispheres could wind up in the toilet, and we only have two hemispheres. That and the statistical variableness to it all: the Carrington 1859 and May 1921 storms, nominally two ‘500 year events’ were, in fact, separated by only sixty-two years.

Where does the buck stop? Continue reading →

Celestial Shooting Gallery, Part Three: When a CME Hits the Atmosphere

Failed GSU transformer at Salem River, NJ

A Generator Step Up (GSU) transformer failed at the Salem River Nuclear Plant during the March 1989 geomagnetic storm. The unit is depicted on the left; some of the burned 22kV primary windings are shown on the right. Though immersed in cooling oil, the windings became hot enough to melt copper, at about 2000 degrees F. John Kappenman, Metatech

Coronal Mass Ejections are mainly charged particles, protons and electrons. When a CME arrives at Earth, the charged protons and electrons come under the influence of the Earth’s own magnetic field, the magnetosphere. Charged particles spin around the lines of magnetic force that comprise the magnetosphere, which diverts most of CME harmlessly around the planet, keeping Earth’s surface tranquil.

If the ejection is large enough, however, it can distort the shape of the magnetosphere, occasionally causing magnetic flux lines to snap and reconnect. When this happens, charged particles leak in and follow the magnetosphere’s flux lines down to the Earth’s ionosphere. There, they strike oxygen and nitrogen molecules and strip them of electrons. These ionized gases glow, giving rise to the ethereal beauty of the auroras around the north and south poles. Unfortunately, these excess charged particles also produce immense electrojets.

Continue reading →

Celestial Shooting Gallery, Part One: The Day We Lost Quebec

John Kappenman reconstructed the electrojets which formed in the ionosphere late in the March 13, 1989 geomagnetic storm which compromised the Hydro-Quebec power grid in Canada. Concurrently, the eastward jet induced ground currents that severely strained the electrical distribution grid of northern continental United States, resulting in a transformer failure at the Salem Nuclear Power Plant, in New Jersey. Courtesy of Metatech

Nearly a quarter century ago, on March 13, 1989, a geomagnetic storm led to the collapse of the Hydro-Quebec electrical grid system, which furnishes power to much of the province of Quebec, Canada. So pervasive were abnormal currents, that protective circuit breakers tripped throughout the system, bringing the entire grid to a halt in about one and a half minutes. The grid’s self-protective systems were geared toward local abnormalities happening in particular places. In contrast, ground induced currents created abnormalities everywhere. The good news was that most of the hardware protected itself. The bad news was that six million customers were without power for as long as nine hours, and where transformer damage did occur, outages continued for another week.

Further south, the United States experienced a close shave. A second surge in the March 13 storm generated similar ground induced currents in the northern United States, with large current spikes observed from the Pacific Northwest to the mid-Atlantic states, one spike destroying a large GSU transformer at the Salem Nuclear Power Plant in New Jersey. According to John Kappenman, of the Metatech Corporation “It was probably at this time that we came uncomfortably close to triggering a blackout that could have literally extended clear across the country.”

Continue reading →

Electric charging on moving bicycle

Atom Silva Bicycle Battery

Using a mounted (stationary) bicycle to generate electricity has been around for some time, as has using bicycles to power bicycle accessories, particularly lights. A new technology enables charging various devices while still using a bicycle for transportation. If this can evolve into a reliable means for charging communications devices and, say, flashlights, we’d have one more means of keeping things going during power failures.

Continue reading →

Connecticut Power – Failure

Tweet The few inches of heavy wet snow that fell in October took out power in parts of New Jersey and Connecticut. Millions lost power in the storm. Nine days later 50,000 remain without power in Connecticut. Hundreds are without power New Jersey and Massachusetts. Connecticut Outage map here. News coverage here: Business Week / NPR / NY Times.

People in New Jersey have installed over 400 MW of nameplate capacity solar. While this is a fraction of the 7.0 GW, or 7,000 MW, of generating capacity needed by the 8 million or so people who reside in New Jersey, and these systems don’t feed the grid when the power is out, let’s do a thought experiment.

Let’s imagine each of the 50,000 in Connecticut who remains without power had a PV solar array. They’d have power during the day. Lets also imagine that microhydro turbines along the Connecticut River, in other rivers, off the shores, and a set of utility scale wind turbines. The result? Power, day and night, without pollution. Power without the need to mine coal, drill for oil, fracture the ground for methane, or generate tons of radioactive waste.

Lets further postulate 50 MW on each of the public schools, and 1.5 to 5.0 MW on each of the colleges and universities in the state.

In the event of a major outage from a storm like the October Surprise of 2011, or Irene, the schools could be used as emergency shelters with power, during the day when the sun is shining – as it has been since the storm.

And these systems generate power in predictable amounts, with no fuel and no pollution.

An emergency backup power system is only used during an emergency. Solar energy systems are used every day – and so are a more efficient use of capital.

And as the picture above suggests – there’s an interesting feedback pattern when snow falls on a solar array. Solar arrays are pitched to face the sun. Snow is translucent – allows light to pass thru. The snow covered solar array generates power, which generates heat, which melts the snow, exposing the array to more sunlight – which generates more power.

NPR: 3 million without power after relatively minor weather events

Tovia Smith reports that we’re not doing well in recovering from last weekend’s weather. What should be a minor event – with solar, wind, batteries, and even petroleum-based generators all at the ready – is a warning of deficiencies in planning and preparedness.

Residents of the northeast are still coping with a weekend storm that was more trick than treat. Schools are closed and utility crews are working overtime to restore power in several states. More than 3 million people were without power immediately after the storm.

via After Storm, Some Northeasterners Still In The Dark : NPR.

Nuclear Power, Natural Disasters, and Security

Tweet Nuclear power diminishes National Security and the stability of the electric grid.

Consider the Brunswick, Fort Calhoun, Millstone, North Anna, and Oyster Creek nuclear power plants, and the Fukushima melt-downs. And consider the “Mobley Factor.”

The Brunswick nuclear plants in North Carolina, and the Millstone nuclear power plants in Connecticut were brought to “reduced power” in preparation for Hurricane Irene. The Oyster Creek plant in New Jersey was shut down. The North Anna nuclear plant, about 90 miles from Richmond, Virginia, was shut down Because of the earthquake that hit the east coast of the United States on Tuesday, August, 23, 2011( Popular Logistics coverage here). The Fort Calhoun, Nebraska, nuclear plant, pictured above, near Omaha, Nebraska, shut down in May, 2011, for refueling, remains shut down (losing $1.0 million per day) due to the flooding of the Missouri River that began June 6, 2011. (Popular Logistics coverage here and here, photos are here).

In an emergency we know that nuclear plants will be shut down, and therefore not generating power. However, they will require emergency power and emergency response resources.

“The Mobley Factor” refers to Sharif Mobley, an American currently in prison in Yemen, suspected of ties to Al Queda. Before going to Yemen, Mr. Mobley worked as a laborer in six nuclear power plants in New Jersey, Pennsylvania, and Maryland, including the Salem and Hope Creek plants in New Jersey, the Peach Bottom, Limerick and Three Mile Island plants in Pennsylvania, and the Calvert Cliffs plant in Maryland. Mr. Mobley had unrestricted access to those plants. Equipped with a cell phone he could have taken pictures, lots of pictures, also known as “Actionable Intelligence.”

Bloomberg News reported (here) “Federal regulations require nuclear reactors to be in a ‘safe shutdown condition,’ cooled to less than 300 degrees Fahrenheit, two hours before hurricane-force winds strike.” Paradoxical, but nuclear power plants – a source of power – depend on fossil fuel.

The Bloomberg News article continues, “Plant operators typically begin shutting down reactors 12 hours before winds exceeding 74 miles per hour are predicted to arrive, said Roger Hannah, a spokesman with the U.S. Nuclear Regulatory Commission’s Region II office in Atlanta.”

Reuters (here) reported that the operators are working to bring online the various nuclear power plants shut down due to the hurricane and the earthquake.

STATE         OWNER      PLANT          STATUS   RESTART      CAPACITY MW
--------------------------------------------------------------------------
Connecticut   Dominion   Millstone 2    REDUCED  UNKNOWN         884
Connecticut   Dominion   Millstone 3    REDUCED  UNKNOWN       1,227
New Jersey    Exelon     Oyster Creek   OFFLINE  UNKNOWN         619
N. Carolina   Progress   Brunswick 1    REDUCED  24-36 Hours     938
N. Carolina   Progress   Brunswick 1    REDUCED  24-36 Hours     937
Virginia      Dominion   North Anna 1   OFFLINE  UNKNOWN         980.5
Virginia      Dominion   North Anna 2   OFFLINE  UNKNOWN         972.9
Nebraska                 Fort Calhoun   OFFLINE  UNKNOWN         484
--------------------------------------------------------------------------

Virginia Nuclear Reactors Shut Down Due To Earthquake

Andrew Restuccia and Ben German reported (here) on E2 Wire, “the Hill’s Energy & Environment Blog” that:

Two nuclear reactors at the North Anna Power Station in Louisa County, Va., automatically shut down Tuesday shortly after a magnitude-5.9 earthquake shook the state and surrounding area.

The plant lost offsite power and is now running its cooling systems on diesel generators….

A dozen nuclear plants in the eastern part of the United States have declared “unusual events” because of the earthquake.

It’s good to know that the diesel powered emergency cooling systems are operational, and the operators (presumably) have sufficient fuel to keep the cooling systems running during the emergency.

But …

How long will the plants be offline?
Don’t we need the power those plants would generate during and in the immediate aftermath of an earthquake?

This illustrates a major problem with nuclear power:

Rather than enhance the security of the grid and infrastructure nuclear power must be shut down during certain classes of emergency.

A 1.0 gigawatt nuclear power plant is made up of one or two reactors. Both must be shut down during an earthquake, however, as we saw from the melt-downs in Japan, the emergency cooling system must stay up. A 1.0 gigawatt wind farm is made up of 286 separate and discrete turbines of 3.5 mw each. A 1.0 gigawatt solar farm is made up of 5 million 200 watt modules and thousands of inverters. These are made up of hundreds or thousands of identical modules. Like nuclear power plants, they can be engineered to withstand earthquakes. But unlike nuclear power plants THEY DON’T NEED EMERGENCY POWER DURING THE EMERGENCY! And even if a few solar modules or wind turbines fail due to an earthquake and aftershocks, most will come on after the storm! And there is no fossil fuel based emergency cooling system needed for solar power or wind power systems!

Infrastructure and Emergency Shelters

If every elementary school in the country had a Photovoltaic Solar system installed on the roof, then in a ‘Katirina like event’ each school would be an emergency shelter with power. If terrorists took one out, there’d be another one a short distance away.

Solar Panels work when the sun shines.

The money we are spending on the war in Iraq – currently estimated at $2.4 Trillion – would pay for about 370 gigawatts of PV Solar generating capacity, about 830 gigawatts of offshore wind electric capacity and about 1,200 gigawatts of land based wind capacity. (Solar is about $6.5 billion per gigawatt, offshore wind is about $2.89 per gigawatt, and land based wind is $2. billion per gw.)

Which would make this country more secure? The War in Iraq or an investment in sustainable energy?

The Staten Island Ferry – Sailing to the Future

The next time you ride the Staten Island Ferry take a good look at the roof of the terminal on the Whitehall Street terminal on the Manhattan side, pictured above. You can see beautiful blue things that look like windows. They’re not windows. They’re photovoltaic solar modules. Just like the solar chips that power your calculators, and the solar powered walkway lights you see all over the suburbs, these convert sunlight into electricity, and provide power for the ferry terminal, Atlantis Energy Systems, late of Poughkeepsie, NY, produced the system.

If they solar electricity systems in the public schools and other buildings used as emergency shelters after Katrina, and those systems were configured to come on when the sun came out the morning after after the storm – as it always has and always will – then they would have had emergency shelters with power.

But unlike conventional emergency power systems, these would be emergency power systems that don’t use fuel, and that are used all the time. They are therefore more efficient and because they do not burn fuel they don’t create waste.

For additional information, click here.

Magnetek built the inverters used to connect the system to the electric grid.