Generator Blog

The National Renewable Energy Laboratory (NREL) today released an initial study assessing the operational impacts and economics of increased contributions from wind and solar energy producers on the power grid. The Western Wind and Solar Integration Study examines the benefits and challenges of integrating enough wind and solar energy capacity into the grid to produce 35 percent of its electricity by 2017. The study finds that this target is technically feasible and does not necessitate extensive additional infrastructure, but does require key changes to current operational practice. The results offer a first look at the issue of adding significant amount of variable renewable energy in the West and will help utilities across the region plan how to ramp up their production of renewable energy as they incorporate more wind and solar energy plants into the power grid.

“If key changes can be made to standard operating procedures, our research shows that large amounts of wind and solar can be incorporated onto the grid without a lot of backup generation,” said Dr. Debra Lew, NREL project manager for the study. “When you coordinate the operations between utilities across a large geographic area, you decrease the effect of the variability of wind and solar energy sources, mitigating the unpredictability of Mother Nature.”

The study focuses on the operational impacts of wind, photovoltaics, and concentrating solar power on the power system operated by the WestConnect group of utilities in the mountain and southwest states. WestConnect is a group of transmission providers, which includes Arizona Public Service, El Paso Electric Co., NV Energy, Public Service of New Mexico, Salt River Project, Tri-State Generation and Transmission Cooperative, Tucson Electric Power, Western Area Power Administration, and Xcel Energy. Though wind and solar output vary over time, the technical analysis performed in this study shows that it is operationally possible to accommodate 30 percent wind and 5 percent solar energy penetration. To accomplish such an increase, utilities will have to substantially increase their coordination of operations over wider geographic areas and schedule their generation deliveries, or sales, on a more frequent basis. Currently generators provide a schedule for a specific amount of power they will provide in the next hour. More frequent scheduling would allow generators to adjust that amount of power based on changes in system conditions such as increases or decreases in wind or solar generation.

The study also finds that if utilities generate 27 percent of their electricity from wind and solar energy across the Western Interconnection grid, it would lower carbon emissions by 25 to 45 percent, depending on the future price of natural gas. It would also decrease fuel and emissions costs by 40 percent.

Other key findings from the study include:

• Existing transmission capacity can be more fully utilized to reduce the amount of new transmission that needs to be built.
• To facilitate the integration of wind and solar energy, coordinating the operations of utilities can provide substantial savings by reducing the need for additional back-up generation, such as natural gas-burning plants.
• Use of wind and solar forecasts in utility operations to predict when and where it will be windy and sunny is essential for cost-effectively integrating these renewable energy sources.

The study was undertaken by a team of wind, solar and power systems experts across both the private and public sectors. The study complements the recently released Eastern Wind Integration and Transmission Study, which examines the feasibility of integrating up to 30 percent wind in the eastern states.

The report released today is an important first step in assessing the impact of solar and wind energy on the electrical grid.  Under the American Recovery and Reinvestment Act, the Department of Energy is investing more than $26 million to further study the Western transmission interconnection, which will help states, utilities, and grid operators prepare for future growth in energy demand, renewable energy resources, and Smart Grid technologies.

Buying me , you can save money and improve efficiency.

    Due to the rapid development of technology, generator is changing everyday. Nowadays generators are becoming to have better performance and low price. That is exactly what Thurlby Thandar Instruments is doing for.

    Thurlby Thandar Instruments (TTi) has launched a reduced-cost version of its TG5011 function/arbitrary/pulse generator.

    The TG2511 has a maximum frequency of 25MHz for sine and square waves and costs only about $1,320. It offers similar facilities to the more expensive 50MHz generator, but with proportionately lower maximum frequencies for pulse and arbitrary waveforms.

    The generator comes with Waveform Manager Plus for Windows, enabling complex waveforms to be created using a PC. Commonly used waveforms that are pre-programmed into the software include sin(x)/x, exponential rise and fall, logarithmic rise and fall, Gaussian, Lorentz, haversine and cardiac waveforms.

    The TG2511 offers a set of digital modulations including AM, FM, PM, PWM and FSK. The modulation source can be any standard or arbitrary waveform, or any external signal applied to the modulation input from DC up to 20kHz.

    A wideband noise generator creates Gaussian white noise with a high crest factor and a bandwidth of 20MHz. Noise can be added to any waveform or can be used as a modulating source.

    Arbitrary waveforms of up to 128k words can be generated at 14 bits vertical resolution and a sampling speed of 125ms/s. A front-mounted USB port enables external flash memory storage of up to 1000 waveforms.

    USB and LAN interfaces are provided as standard, the latter conforming with LXI class C (Lan eXtensions for Instrumentation). A GPIB interface is available as an option. All functions of the generator can be controlled from the digital interfaces, and arbitrary waveform data can be transferred via them.

    From the article, we are experiencing the rapid development of generator, and various generators will be used at all machinery to improve efficiency.

    With the rapid development of economy, a lot fuel is used to keep the industry working, but the transportation of fuel becomes an important issue, especially  when we are transportating these gas which may cause great influence to environment when it leaks. So when we are designing the pipeline for gas, we should choose the right place and reasonable routine, in order not to affect people’s safety and daily life.

     A global outcry is growing over a proposal to ship 16 aging radioactive steam generators across Ontario’s Great Lakes, a plan critics say risks turning the iconic waterways into a permanent corridor for the transportation of nuclear waste.
     Nearly 2,400 people and 50 organizations, including aboriginal groups from across Canada, the United States and Europe have signed an online petition urging the Canadian Nuclear Safety Commission to block shipments of the 100-tonne decommissioned generators from the Bruce Nuclear Generating Station near Kincardine, Ont., to Studsvik in Sweden for recycling.
    The critics say they are opposed “to any shipment through the Great Lakes of radioactive waste or radioactively contaminated equipment from the decommissioning, refurbishment, or routine operation of nuclear reactors.”
   The protest has prompted Bruce Power to hold three open houses this week in an effort to address concerns raised by citizens in the affected communities.
   So far, the attendance has been weak, with only about 20 people attending the first meeting in Owen Sound, Ont., the city where the school-bus-sized generators will be moved along local roadways and loaded at the harbour.
   Two other meetings — in Southampton, Ont., and at Bruce Power headquarters in Tiverton, Ont. — are planned for later this week.
   “The controversy is very much overstated,” said Ross Lamont, a spokesman for Bruce Power. “The fact that not a lot of people showed up for the first meeting is some indication that people are getting enough information.”
   He attributed the continuing concern to a small group of vocal residents, many in high-profile groups like the Sierra Group, Greenpeace Canada and the Canadian Coalition for Nuclear Responsibility.
   The generators are part of the Bruce A nuclear reactor, which is currently undergoing a $5.25-billion refurbishment. The same reactor, located on the banks of Lake Huron, was blamed for an accidental radioactive release last November.
   Lamont said the generators need to be shipped to Studsvik because it is the only location that can recycle 90 per cent of the metals.
   Bruce Power, the country’s first private nuclear-power generator, applied for approval to ship the 1,760 tonnes of radiation-laced steel in April but is waiting for a decision from the commission, which is still considering the technical aspects of the application.
   If approved, the generators are scheduled to leave during a three-week period in September.
   This would be the first time a shipment of this type has travelled on the Great Lakes. The generators would be shipped through the Great Lakes and St. Lawrence Seaway and then across the Atlantic Ocean.
    The regulatory body says that any “low-level nuclear waste” will be enclosed in each steam generator and that the only difference between this shipment and others that occur on Canadian waters involving environmentally hazardous materials like highly corrosive liquids and acid-filled batters, is its size.
    Lamont said a contingency plan is in place that will safeguard the generators, beginning with the shipment on the road — which will have a police escort — to ensuring that the cargo is carefully placed on a special ship equipped to move heavy goods.
   “Our first step of the emergency plan is to plan to not have an emergency,” he said. “The opportunity for anything to go wrong with any of these generators is extremely low. Even if we dropped them in the water, we just have to pick it up. Radiation is not going to be leaked out.”
    Sarnia Mayor Mike Bradley, an outspoken opponent of the planned shipment, said the issue is that communities such as his were unaware of the application even though it has the potential to affect residents.
   “We’re realistic, we understand that there is a need to ship some materials,” he said. “It’s just the way this thing has unfolded. This is a precedent-setting shipment which will lead to more nuclear waste being shipped across the Great Lakes. That’s the greatest issue.”
   Bradley said this signifies another threat to the lakes, which are already dealing with pollution and the evasive Asian Carp species.

    “We don’t want to be alarmist, but we need better contingency plans,” he said. “Forty million Canadians and Americans drink from the Great Lakes. What will happen if there is an accident?”
    Well, this proposal is still in discussion, sooner or later, the government will come out with a law to solve this problem, although I am not a threatenist,  planning to ship radioactive generator on Great Lakes is not an easy job, we should think it carefully.

      Battery is widely used everyday to provide power for all kinds of little lighter and big family appliance, but have you ever thought about what we are gonna do with these batteries? we may throw them away or someone  gathers them in a certain place. The battery which we throw into outside world will cause great pollution to environment, but some expert will do something to solve this problem.
      A new battery-sized portable generator than produces electricity from vibrations could take the place of normal batteries in gadgets. The device could replace the huge numbers of conventional batteries that are currently used in the modern world’s ever-expanding number of portable gadgets and which often end up polluting landfills.

     Many standard batteries are thrown out with the normal refuse and end up in landfill sites where they can leak toxic chemicals, causing great harm to the environment. The Vibration Energy Cell batteries recently displayed by a Japanese electronics company could radically reduce the practice of throwing away old batteries, thereby lowering the risk that discarded batteries end up causing more pollution.

    Brother Industries, already well-known to many consumers as a producer of printers, says the vibration-harvesting generators could in some applications be substituted for AA or AAA batteries. The company demonstrated the generator power a television remote control, a remote-control light switch and an LED flashlight.

    The Vibration Energy Cell works in a manner similar to the dynamo used to power bicycle lights. In this case, shaking the device a few times produces the electrical power. Speaking to the BBC, a spokesman for Brother explained how the device uses a coil, a magnet and a condenser to store the electricity produced from the movement. The Vibration Energy Cell generates low amounts of electrical power and is designed to be used in devices like TV remote controls, which have low power requirements and do not continuous electrical supplies.

How cute I am !

    As is known to all, Holand is famous for using wind as a kind of energy. It can provide power which we have a great demand of, otherwises,it doesn’t cause any pollution to environment, so it is the cleannest energy which can be used forever.

    British company Wind Power Limited has unveiled its new offshore wind generator, the 10MW Aerogenerator X, with  twice the power and half the weight of Wind Power’s original Aerogenerator design.
 
    According to the company, it doesn’t have same weight constraints as a normal wind turbine and the blades do not suffer weight induced fatigue. Aerogenerator X is half the height of an equivalent horizontal axis turbine and its weight is concentrated at the base of the structure. The generator is huge; stretching nearly 275 metres from blade tip to tip.
 
   The Guardian reports each 10MW Aerogenerator X turbine has the potential to generate enough electricity to provide 5,000-10,000 homes - the energy equivalent to 2 million barrels of oil over their 25-year lifetime.
 
   Theo Bird of Wind Power Limited says: “Offshore is the ideal place for wind power but is also an extremely tough environment. The US wind researchers who worked on vertical axis projects have always regarded the technology as great to work with at sea because it can be big, tough and easily managed.”
 
    Wind Power’s Aerogenerator project was originally developed in 2005. The first Aerogenerator X units will be constructed  in 2013-14 after two years of testing.
 
    Several companies are in the race to build a 10MW wind powered generator. According to Wikipedia, the world’s largest turbine is currently the Enercon E-126, with a rated capacity of 7.58 MW, an overall height of 198 m and a diameter of 126 m.
   

    Due to the rapid development of wind technology, we will use this kind of clean energy and make it useful for people’s daily life.

after all, you will use me some day.------- generator

     Generators are widely used in all kinds of machineries, people uses it to generate power and transports the produced electricity to consumer when they run into an emergency of electricity shortage. When people buys this kind of device, they should consider what kinds of generators they should buy, a brand new one or second hand one?

    There is a shortage of generators in the local market following the power outage in Sharjah, with people hiring the much-needed power generator from neighbouring Dubai and as far as
Abu Dhabi, industry sources say.

    A sales manager from Sharjah International Airport Free Zone-based company said a lot of people were enquiring about renting generators as there are no stocks for small- and medium-sized ones in the market.

   “We are not in the renting business, we sell generators and we did not notice any change in our business due to power shortage in Sharjah, but companies involved in the hiring business are benefiting a lot,” he said.

   “People don’t buy generators because they think this (the power shortage) is temporary and hope to use rented generators for maximum of two to three months. Big companies are buying new products, while smaller companies usually go for rentals,” a source from Al Binayah Building Materials Trading in Sharjah, said.

   “Of course, in the long-term perspective, it is cost efficient to buy a new generator,” he said, adding that the company has recorded a slight rise in sales after the crisis broke.

   A salesman from Sharjah-based Champions, which deals in generator renting, said at the moment, the company had only medium and big size generators from 40 KVA onwards for hiring.

  “We have run out of small generators and have only medium and big sizes. A 40 KVA generator will
cost you Dh4,500 per month as rent and Dh47,000 if buying a new one,” he said.

  Sami Jaber from Casablanca Generators in Sharjah said sales increased by 10 per cent compared to two months ago since the power shortage outbreak in the emirate. “Units from 30 KVA to 200 KVA of capacity are in big demand,” he said.

  A source from Al Qudrah Used Building Machines and Equipment said sales have significantly increased in the last three days. “Our business is at least 50 per cent up now. People are hiring all kinds of units — from 20 KVA up to 600 KVA. With a 20 KVA generator, you can power a small office or residential air-conditioner, while a 650 KVA unit can provide power to a 10-storey building.

  ”In fact, our suppliers are so happy with us because of the brisk business. We hardly have time to place new orders. People are not even asking for prices, let alone bargain, and they are ready to pay in advance. At the moment, we do not have small generators, all are rented out,” he said, adding that the boom is expected to last till September end.

  “We receive more than 100 calls a day from Sharjah, enquiring about all capacity generators, especially from the Sharjah Industrial Area,” a sales manager of an Al Quoz-based heavy equipment trading company said.

  “We have shortage in rentals and our stock is finished. At the moment, we have only one generator left. People are ready to pay double the price and we have a long waiting list,”
he said.

  “People normally prefer to hire used generators rather than buy new ones because the latter involves a lot of maintenance work,” he added.

  Some, however, said that the current boom could lead to a price hike in the rental and sales market alike. Currently, prices are 10 to 15 per cent less than they used to be back
in 2006.

  “Our suppliers are already hiking prices because of the demand. Many people are confused now and they are considering in investing in new generators. If the situation persists, prices will shoot up,” a Dubai-based sales manager said.

  Ashras Allam, general manager of the Abu Dhabi-based Al Masaood (Power Engineering Division), said his company had been getting a lot of enquiries from Sharjah for the last three days.

  “Though they ask for quotations only to buy new generators, there is a possibility that sales will go up because we know that it is very difficult at the moment to hire a second-hand generator as stocks are running out even in Abu Dhabi,” he said.

   When something is wrong in the circle, it wil cause evertything runs into a bummer. Choose the one which suits you best.