Transmission Technologies

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  1. BSEE, NOAA begin joint study of multiple remote spill-sensing systems

    The US Bureau of Safety and Environmental Enforcement and National Oceanic and Atmospheric Administration jointly began a study of multiple remote spill sensing systems at BSEE’s Ohmsett facility in Leonardo, NJ, south of New York City on July 22. The three-phase study will employ Ohmsett’s 660-ft long, 2.6 million-gal capacity saltwater test tank, the US Department of the Interior agency said. Spill responders will be able to use its results to better monitor and measure oil slicks and emulsions in the marine environment and improve offshore spill response operations in the process, it said. The study is the latest in comprehensive long-term oil-spill response research that BSEE and its predecessor agencies have conducted for more than 25 years. The program’s main focus is to improve methods and technologies to detect, contain, treat, recover, and clean up offshore spills. “We have a pretty broad portfolio—anything that makes certain the industry is prepared to respond effectively,” Lori Medley, BSEE’s oil-spill response branch chief, told OGJ on July 25. Remote sensing uses various technologies to acquire data on objects or events without making physical contact. Sensors either can be passive—responding to external stimuli and recording natural energy reflected or emitted from the Earth’s surface—or active, using instruments and technologies to collect data about their targets. Range of technologies Remote sensing from an aircraft, including unmanned aerial vehicles (UAV), is the most common form of oil-spill tracking, according to BSEE’s web site. Satellites using radar sensors are becoming a viable alternative, and using visual satellite imagery to monitor spills also shows promise, it said. For underwater remote sensing, most spills can be accessed by using remotely operated vehicles (ROV) and autonomous operated vehicles (AUV), although existing sensor packages need to be refined to meet needs created by this environment. A combination of sensors currently is used for oil-spill surveillance, presenting challenges in data fusion and delays in getting the appropriate data to responders, BSEE said. This makes it necessary to develop and advance new sensors and real-time data transmission technologies, it said. “We’d like to minimize data acquisition and transfer time,” noted Jay Cho, who also works in BSEE’s oil-spill response branch. “We’re trying to develop several different approaches for various situations.” The goal is to get more real-time data instead of delayed satellite feeds, Medley said. NOAA is involved because it determines penalties such as BP PLC’s fine after its Macondo deepwater well blew out and spilled 5 million bbl of crude into the Gulf of Mexico in 2010, she added. Current study’s focus The current study will look at emulsified oil, Medley said. “When its oil concentration is above 25%, it’s harder to burn using existing technologies,” she told OGJ. “This study will try to evaluate their limitations and applications. We picked out given satellites on specific days, then flew fixed-wing systems and drones, followed by people gathering individual samples.” Researchers will compare multiple remote sensing systems to determine how well each detects oil-water emulsion mixtures and measures oil thickness during the study’s first phase, BSEE said in its announcement of the joint study with NOAA. Remote sensors will view emulsified oil in the Ohmsett tank from different angles and heights and through different mediums to validate sensor capabilities, it said. Above water, sensors on the “Ohmsett Bridge” will provide an up-close view of the water’s surface as an ROV provides an underwater view, BSEE said. Simultaneously, remove sensors on a UAV, a fixed-wing aircraft, and a helicopter will take measurements. Three satellites with remote sensors also pass overhead and provide space-based observations. The study’s second phase, planned for late this year, will allow the research team to measure sensor performance in an open-water environment and compare that data to controlled conditions at the Ohmsett tank, BSEE said. “We hope to go offshore in the Gulf of Mexico in September, where we expect different results,” Medley said. “In the tank, its cement bottom reflects some information from elsewhere that we don’t expect to be present on the open ocean.” BSEE said that development of operational methods and procedures for processing and interpreting the capabilities of the sensors will occur in the study’s third and final phase. Contact Nick Snow at nicks@pennwell.com .

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    Tue, 26 Jul 2016

  2. Renewable transmission gain from low transmission losses of high voltage transmission technologies

    The market earned revenues of $9.74 billion in 2010 and estimates this to increase to $15.9 billion in 2012

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    Mon, 11 Jul 2011

  3. ABB wins $700MM order to provide transmission link between offshore wind farms

    ABB has been awarded an order valued at approximately $700 million to provide a HVDC Light transmission link which will connect three North Sea wind farms to the mainland German power grid.

    Online Articles

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    Fri, 16 Jul 2010

  4. Siemens unveils new offshore wind power innovation

    Siemens has made a breakthrough in its transmission technology that looks set to be an ideal fit for the offshore wind power industry.

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    Thu, 22 Oct 2015

  1. DOE to fund offshore wind grid interconnection study

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    Mon, 7 Nov 2011

  2. Siemens Unveils New Offshore Wind Power Technology

    Siemens has launched a new direct-current technology that simplifies the connection of offshore wind power plants to the grid.

    Online Articles

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    Thu, 22 Oct 2015

  3. Siemens develops gas-insulated transmission line for direct current

    Siemens develops a gas-insulated transmission line for carrying large amounts of energy at high direct current (DC) voltages

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    Mon, 13 Apr 2015

  4. Siemens develops gas-insulated transmission line for direct current

    Siemens has developed a gas-insulated transmission line for carrying large amounts of energy at high DC voltages 

    Online Articles

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    Mon, 13 Apr 2015

  5. Gas-insulated transmission line technology to boost Energiewende

    Siemens is developing a gas-insulated transmission line technology that will boost grid integration of renewables.

    Online Articles

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    Thu, 9 Apr 2015

  6. Siemens ups output of direct drive offshore wind power turbine

    Siemens says its SWT-7.0-154 offshore wind turbine delivers nearly ten percent more energy than its predecessor, while retaining the same proven reliability

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    Wed, 11 Mar 2015

  7. Power News: ABB sets world record in HVDC Light voltage level (Video)

    At 500 kilovolts (kV), the Skagerrak 4 HVDC link commissioned by ABB sets a new record in transmission voltage using Voltage Source Converters

    Online Articles

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    Mon, 12 Jan 2015

  8. Siemens wins BorWin3 North Sea power transmission order

    Consortium leader Siemens to supply HVDC transmission technology for BorWin3 offshore wind farm grid connection in the North Sea

    Online Articles

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    Tue, 15 Apr 2014

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