POWER

In order to operate aging nuclear power plant instrumentation and control systems for up to 60 more years or longer, there must be a smooth transition from existing analog technologies to advanced digital platforms. For this to occur, electromagnetic compatibility concerns related to both qualification testing and the electromagnetic environment must be addressed to ensure safe and reliable operation of these systems within the plant’s electromagnetic and radio frequency interference environment. By understanding the regulatory requirements and sharing implementation experience, digital system upgrades can be installed successfully.

More than 60 floating power stations are in operation around the world, deploying some 4 GW at continental shores where electricity is most needed. Though these feature a variety of power sources (including nuclear, gas, and heavy fuels), most are power barges — they do not have their own propulsion systems and would have to be towed to desired locations.

Digital fieldbus technologies, including Foundation fieldbus and Profibus, are increasingly being used with success in the nuclear and fossil fuel power industries. This article compares a conventional control system with a Foundation fieldbus – based digital control system used in a typical circulating water system in a nuclear power plant. As shown in this example, using digital fieldbus technologies can result in significant savings in terms of installation and hardware costs.

High-voltage direct current transmission (HVDC) has come a long way since 1882 when the first of its type carried power from Miesbach in Bavaria to an electricity exhibition in Munich, 57 kilometers (km) away, at a mere 1,400 V. Last December, just before the world ushered in the new decade, Siemens Energy and grid operator China Southern Power Grid put into operation the first pole of a transmission link between the southern Chinese provinces of Yunnan and Guangdong, a 1,418-km ultra-high-voltage direct current (UHVDC) system. That line has a transmission capacity of 5 GW, and it operates at a voltage of 800 kilovolts (kV) — a world record.

With everything from baby food to SUVs (hybrids of course!) competing for “green mindshare,” audiences are inundated with a barrage of green claims. Although environmental awareness is at an all-time high, a growing sense of skepticism has crept into the conversation. Whereas even a couple of years ago audiences eagerly gobbled up green claims, people today are more uncertain and retain a higher degree of doubt when confronted with messages of sustainability and environmental stewardship.

Biofuels projects present a variety of risks in today’s business climate that must be mitigated or hedged in order for project financing to proceed. With the contraction in the capital markets, credit quality has become increasingly important.

Instead of just forgetting about their trash when they leave it at the curb, people increasingly are recognizing that municipal solid waste is a valuable resource. For more than 25 years, Covanta Energy has viewed waste as an important resource not to be thrown away. Waste materials have a tremendous amount of potential energy. Waste materials in landfills release significant amounts of methane, a potent greenhouse gas. Recycling and Energy-from-Waste (EfW) together, as part of an integrated waste management approach, make the best use of this resource, reducing our greenhouse gas emissions while turning waste into steam to heat our homes and businesses and electricity to power our cities and towns.

Over the past three decades, the Brazilian sugarcane industry has experienced major and continuous technological improvement. Today, sugarcane is the basic input for an extraordinarily diverse range of value-added products including food, animal feed, chemicals, biofuels and electricity coming from modern, integrated biorefineries that produce sugar, ethanol, bioelectricity and bioplastics in Brazil.

The support of energy savings performance contracts helps customers achieve goals.

The federal government is the largest single user of energy in the United States. Energy efficiency is the cleanest, cheapest and fastest source of energy. Put the two together and you have the Federal Energy Management Program (FEMP).

Renewable and reliable alternative energy is a critical need as the world’s oil supplies are depleted. Using its globally renowned expertise in engineering and systems integration, Lockheed Martin is successfully pioneering new ways to leverage solar, wind, and wave energy as alternatives to fossil fuels.

District heating in Denmark was developing in the same manner as in other countries before the energy crisis hit the western countries in 1973/74. However, by the beginning of the 21st century, the Danish energy consumption per capita for space heating had dropped more than 50% compared to 1973.

Owing to visionary environmental and energy policies combined with coherent public planning, Denmark has developed the most efficient waste management system in Europe.

Many representatives and advisors of renewable energy businesses believe (or at least hope) that 2010 will witness a significant “uptick” in merger and acquisition (M&A) activity across all renewable energy industries. As renewable energy businesses continue to attract funding and benefit from favorable governmental policies (or, conversely, as funding slows down or governmental policies change), such businesses should be in a position to attract suitors and/or explore growth opportunities. To the extent you are looking for or experience M&A opportunities, below are a few “M&A Truths.”

ACORE is pleased to partner with EarthEra to balance the carbon emissions of this year’s conference. EarthEra is an innovative new program from NextEra Energy Resources, North America’s largest producer of wind and solar power. The EarthEra program provides a powerful new way for everyone, from large organizations to individual consumers to reduce their carbon footprint and help build a clean energy future. 100% of revenue received by EarthEra is directed to the EarthEra Renewable Energy Trust and used to build new renewable energy facilities.

U.S. Department of Energy Secretary Steven Chu announced last week that the DOE’s National Renewable Energy Laboratory (NREL) will invest up to $12 million in total funding ($10 million from the American Recovery and Reinvestment Act) in four companies to support the development of early-stage solar energy technologies and help them advance to full commercial scale. The goal of this effort is to help further expand a clean energy economy and make solar energy more cost-competitive with conventional forms of electricity.

Efficient transport plays a crucial role in the development of society and its economy and, in many respects, commercial transport solutions are the lifeblood of the economy. At the same time, transportation has a negative impact on society, not least in the form of emissions and congestion. "The key is to strengthen the positive aspects of the transport system while working to combat the negative ones," says Stefan Lorentzson, President of Volvo Group North America. "The Volvo Group is continually developing new engine technologies which reduce emissions and increase fuel efficiency."

The RES Alliance for Jobs is a coalition of businesses and organizations that support Congressional enactment of a strong federal renewable energy standard (RES). The group’s members include companies and associations representing the wind, solar, biomass, waste-to-energy and hydro power business lines. The Alliance seeks to demonstrate that a strong RES would create sustainable growth in the renewable energy industries, enabling manufacturers to invest billions of dollars in the U.S. economy and create hundreds of thousands of high-quality American jobs that cannot be outsourced.

One day before the Copenhagen climate change summit was scheduled to end, negotiations had deadlocked. Developing nations led by China were demanding that rich countries pledge as much as $200 billion a year to help them cope with drought, rising sea levels and other ravages of global warming already afflicting some of the poorest countries on Earth. For its part, the United States was insisting on international verification of carbon emission reductions, a condition anathema to China but viewed as essential to gain Congress’ approval.

As the economy begins to grow again, the banking industry continues to stabilize, and lawmakers work on finalizing climate change legislation, the decisions made in 2010 will lay the foundation for the power industry for decades to come.

Racine Vortex released its RNS Series (Insertion) and RWS Series (Wafer) Vortex Steam Flow Meters to measure noncondensing steam and saturated process steam at pressures up to 150 psi for applications such as boiler monitoring. Both meters have no moving parts and are loop-powered devices with standard HART communication for ease of field programming and […]

The familiar saying "as goes California, so goes the nation" seems to apply to the many states that have been unable to invest in infrastructure improvements because they are crushed by debt and shrinking revenues. Will California and energy project developers continue to invest in energy infrastructure in 2010 given the limited availability of private capital, shaky state finances, and shifting regulatory climate?

News items of interest to power generation professionals.

Which country has the smartest grid? Which U.S. state has the most smart meters? What’s Google got to do with the grid? Answers to these questions and more can be found in our web exclusives. Here’s a taste of what you’ll find online.

With the eighth-largest economy in the world, Brazil has a clear need for power, but balancing supply and demand has proven tricky in recent decades. Even in a country where over 80% of generation capacity comes from renewables, planning for future capacity additions isn’t straightforward or easy.

The selective catalytic reduction system has become ubiquitous throughout the world of power plants. Emission control requirements are ever-more stringent, and the cost of excursions is becoming increasingly high. The key to staying under the regulators’ radar is precisely controlling the ammonia injected into the boiler. A new control strategy does precisely that.

Endevco Corp. launched Model 2771C-XX, an ultra-low-noise remote charge converter (RCC) designed for use with charge output piezoelectric sensors within applications such as nuclear power plant/regenerative energy and environmental testing. The model offers a rugged two-wire (IEPE), single-ended design that operates from constant current power (4-20 mA). Both RCC signal output and current to the […]

A number of factors are coalescing to create the most hospitable climate for smart grid development activities that has yet been seen in the U.S. Here’s a look at those elements and at the different models and motivations for smart grid project development across the country.

Once upon a time, climate change felt like a distant threat on the horizon. Now it is happening in front of our very eyes. Across the world, global warming is sparking more intense heat waves, more flooding, and more droughts. If climate change continues at its current pace, the social, environmental, and economic costs don’t […]

Xcel Energy’s SmartGridCity enterprise in Boulder, Colo., is one of the most talked-about smart grid projects. Here’s what some Boulder utility customers are saying about it.

Japan began operating a nuclear power reactor using plutonium-uranium mixed oxide (MOX) as fuel for the first time last October. About 16 MOX-containing fuel assemblies were loaded during a scheduled outage to replace a portion of the 193 fuel assemblies at the No. 3 reactor at Kyushu Electric Power Co.’s Genkai nuclear power plant. The utility eventually plans to triple the number of fuel assemblies at the 1,180-MW reactor in Saga Prefecture to 48. The Ministry of Economy, Trade and Industry conducted its final inspection of the reactor and issued its certification on Dec. 2.