19
Wed, Dec

The World Bank and the Technical University of Denmark today launched new Global Wind Atlas, a free web-based tool to help policymakers and investors identify promising areas for wind power generation, virtually anywhere in the world.

The Global Wind Atlas is expected to help governments save millions of dollars by avoiding the need for early-stage, national-level wind mapping. It will also provide commercial developers with an easily accessible platform to compare resource potential between areas in one region or across countries.

The product is targeted at owners of 1.5MW windturbines that use an open-loop water-glycol based IGBT cooling system.  Warm atmospheric  temperatures - lead to water evaporation from the open-loop coolant mix.  The system has to be regularly monitored and serviced  for replenishing and rebalancing of fluid, resulting in costly wind turbine and transformer power down. In addition, when the system is not promptly serviced, the resulting mix imbalance inhibits the cooling properties of the fluid and can potentially compromise the IGBTs, sometimes requiring their replacement. Parker's custom designed KleenVent solution helps optimize wind turbines operation and eliminate maintenance downtime previously required to restore cooling fluid mix levels, by closing the loop on the "open loop" cooling system.   KleenVent effectively eliminates water evaporation by containing the water vapor in a closed loop add-on system, and condensing it back into a liquid to maintain a constant water-glycol ratio maintenance to optimize the cooling systems efficiencies.

Cost savings of KleenVent implementation in 1.5 MW wind turbines with open loop cooling systems

As owners and operators are spending budgets and time maintaining IGBT coolant levels in open-atmosphere cooling systems, the overall cost of maintenance, replacement fluids and reduced reliability adds up quickly. The results of implementing the KleenVent solution, are reduced monitoring and improved turbine uptime and reliability – which net higher productivity and uninterrupted power generation and revenue streams.

Return on investment for the KV-CEI can be measured in as little as a  few short weeks in warmer climates and at elevated operating temperatures, meaning a quick investment in the Parker KleenVent solution can provide breakeven expenditures by summer’s end, along with continued productivity savings for the life of the turbine.

KleenVent KV-CEI technology  -- how the product works

The KleenVent KV-CEI is part of a larger family of products designed to isolate hydraulic systems from airborne contaminants, dust, chemicals and water vapor evaporation. The KV-CEI enclosure solution works by closing off the coolant loop system from the outside atmosphere with a breather bladder. This bladder allows the outside air to inflate and deflate the bladder as fluid levels inside the isolation tank expand and contract due to system liquid temperature changes. A low-pressure relief valve helps prevent system over-pressurization in case of unforeseen air trapped inside the fluid lines, and an open-close air exhausting valve allows the system to be drained and refilled quickly with the proper fluid levels during a normal preventative maintenance cycle. The current KV-CEI design is versatile enough to allow the addition of low-level liquid sensors when needed. We also can design many mounting options designed to fit a particular mounting pattern.  Currently the KV-CEI technology is deployed in wind turbine systems for one of the world's leading wind turbine manufacturers.

The new Parker KV-CEI reservoir bladder barrier creates a closed atmosphere that expands and contracts with temperature- and atmospheric pressure-induced changes. Isolating the internal volume of the reservoir from the existing outside atmosphere prevents both evaporation of water from and the ingress of airborne contaminants into the water-glycol solution. A check valve provides over pressure protection, and a visual level indicator allows local confirmation of the coolant level. An additional port is included to accommodate an optional, industry-standard, liquid-level float switch for remote low-level coolant indication.

  • Longest wind turbine blade ever manufactured in India
  • Rotor blade for the new S128 series of wind turbines
  • Rotor blade incorporates advance aerodynamics and carbon fiber technology

Suzlon Group, India’s largest renewable energy solutions provider has designed and manufactured the country’s longest wind turbine blade at its Padubidri Rotor Blade Unit. The advanced blade (SB 63) measures 63 meters in length and has been specifically developed for Suzlon’s new S128 wind turbine family with a rotor diameter of 128 meters, 1.5 times taller than the India Gate monument in terms of height. Suzlon’s turbines have been setting industry benchmarks across the technology value chain by bringing global scale capability to India.

This month marks the two-year anniversary of the Department of Energy’s Wind Vision report that quantifies the economic, environmental and social benefits of a wind energy future, if U.S. wind power supplied up to 35% of the nation’s electrical demand by 2050. The Wind Vision outlines a roadmap for growing the wind industry that could support more than 600,000 jobs in manufacturing, installation, maintenance and supporting services.

Here are some examples of the progress we’ve made toward this roadmap in just two short years.

REDUCING WIND COSTS

The Department of Energy supports a host of projects that reduce wind energy costs through technology advancements. One area focuses on improving wind resource characterization to increase wind plant efficiency that reduces risk for developers.

Action: Deployed two research buoys that measure the weather and oceanographic data, which is made available to the public. This is crucial for developers to appropriately design, size and site projects to help determine how much power they can produce. When the Department of Energy is not using the buoys, they can be used by industry partners.

As wind farms move offshore, floating foundations are necessary to capture 60% of U.S. offshore wind resources located in deep water, where conventional foundations are not feasible.

Action: Supported the University of Maine’s development of a concrete floating foundation that uses less steel and can be produced at a lower cost to harness wind energy in deep waters. 

Action: To further lay the groundwork, we worked with the U.S. Department of the Interior to develop a joint strategy in 2016 to facilitate the development of the U.S. offshore wind industry and to achieve deployment levels consistent with the Wind Vision.

EXPANDING DEVELOPABLE AREAS

Taller wind turbines and long-needed electrical grid upgrades can open the door to expanding U.S. wind deployment. For example, increasing wind turbine tower heights from 80 meters to 140 meters would increase the technical potential for land-based wind by two-thirds, allowing more states, particularly in the Southeast, to benefit from wind power.

Action: Supported Keystone Tower Systems to develop an innovative spiral welding process for wind turbine towers. This in-field manufacturing method can cut tower costs (up to 180 meters tall) by 40%.

Action: Funded Iowa State University to develop the Hexcrete Tower, which uses prefabricated concrete components, enabling a taller tower without special transportation requirements. This pilot project showed that towers constructed in this manner can reduce the cost of wind-generated electricity by more than 20%.

Action: Released a January 2017 report which confirmed that adding even limited transmission can significantly reduce the costs of supporting levels of wind deployment consistent with the Wind Vision. The study found that building just four currently proposed transmission projects would halve the level of wind curtailment – the times in which wind farm operators are told not to produce energy due to limited grid capacity.

INCREASING ECONOMIC VALUE

To increase America’s manufacturing competitiveness as identified in the roadmap, our wind and advanced manufacturing offices have teamed up with public and private organizations on new methods to produce wind turbine components.

Action: Applied additive manufacturing, also known as 3D printing, to the production of wind turbine blade molds. This process eliminates the need to manufacture a “plug” that is then used to form a mold, from which fiberglass blades can then be made. This reduces the time and cost required for blade manufacturing.

We also engage with collaborative research groups and make investments to fund research and development projects that address environmental and wildlife challenges from the deployment of wind energy.

Action: Funded Purdue University to develop a technology that will characterize golden eagle vision and hearing. The goal is to collect data for future systems that could make it easier for golden eagles to detect and avoid wind turbines.

Action: Funded Frontier Wind to develop and test an ultrasonic acoustic bat deterrent system comprised of an array of ultrasonic transmitters mounted along the length of turbine blades. High-frequency sounds from these transmitters will cover the entire turbine rotor, with the goal of deterring bats from wind turbines.

CATALYZING ECONOMIC DEVELOPMENT

The government actions listed above move new technologies forward and help overcome barriers for adding wind energy. These investments, which benefit the industry and the economy as a whole, are leveraged and expanded upon by individual private companies. A new analysis by Navigant estimates that wind energy has an annual economic impact of about $20 billion on the U.S. economy. Continuing these investments in technology innovation and market barrier mitigation will help maintain and advance the nation’s existing wind manufacturing infrastructure and economic benefits, as well as ensure the United States remains globally competitive.

Visit website

Maritime Journal

In top market position was the UK with 1,680MW installed, followed by Germany with 1,247MW and China with 1,161MW.

WindEurope’s annual onshore and offshore wind statistics show offshore wind represented 20% of the annual EU installations, with 3,154MW of new capacity connected to the grid in 2017. This was double than 2016 and a slight increase compared to 2015, which was an exceptional year due to the resolving of grid connection delays in Germany.

Installed capacity growth

WindEurope’s annual onshore and offshore wind statistics show offshore wind in Europe saw a record 3,148MW of net additional installed capacity in 2017. This corresponds to 560 new offshore wind turbines across 17 wind farms.

More Articles ...