Siemens is developing the world's first air-insulated generator switchgear with vacuum circuit-breaker technology equipped with short-circuit breaking capacity of up to 100 kiloamperes (kA) at 24 kilovolts (kV).
The switchgear type HB3-100 protects operating equipment such as electrical generators and transformers against overvoltage and short-circuit conditions and serves to support automated and demand-controlled operational management of power plants.
These switchgear can be used in hydroelectric power plants, coal-fired units and combined cycle power plants as well as solar-thermal and geothermal power plants with electrical generating capacities of up to 400 megawatts (MW). Thanks to their low-maintenance vacuum circuit-breaker technology and resource-optimized development, the lifecycle costs of HB3-100 switchgear is up to 70 percent less than existing solutions.
"With our new type-tested HB3-100 generator switchgear we are now expanding our product range for power plant operators, municipal utility companies and EPC projects, and offering this proven vacuum circuit-breaker technology also for high operating current applications," explains Stephan May, CEO of Siemens' Medium Voltage and Systems Business Unit. The products of Siemens HB3 series cover 80 percent of all market requirements for this type of switchgear in new power plant units and retrofit projects.
The HB3-100 consists of a generator circuit-breaker in vacuum technology, disconnectors, grounding system and integrated startup disconnect switches. Unlike gas-insulated circuit-breakers, vacuum circuit-breakers interrupt the arc in a high-vacuum interrupter tube.
The single-phase encapsulated unit can handle rated currents of up to 12,500 amperes (A) without forced cooling. It is maintenance-free up to 10,000 electrical switching events and 30 short-circuit interruptions at 100 kA. The hermetically sealed vacuum interrupters require no maintenance as a general rule and are resistant to any environmental influences.
A further important consideration is that no oxidation takes place in the vacuum, so that the metallic surfaces remain permanently clean and ensure a consistently low contact resistance. The lifecycle costs of the HB3-100 switchgear – costing of which covers everything from procurement to final disposal – are between 25 and 70 percent lower than for a generator switchgear with gaseous switching medium (e.g. SF6), depending on the power plant type.
For more information on Siemens' Energy Management Division, go to: www.siemens.com/energy-management
Further informationen on Siemens' generator switchgear systems can be found at www.siemens.com/generatorswitchgear
Siemens AG (Berlin and Munich) is a global technology powerhouse that has stood for engineering excellence, innovation, quality, reliability and internationality for more than 165 years. The company is active in more than 200 countries, focusing on the areas of electrification, automation and digitalization. One of the world's largest producers of energy-efficient, resource-saving technologies, Siemens is No. 1 in offshore wind turbine construction, a leading supplier of gas and steam turbines for power generation, a major provider of power transmission solutions and a pioneer in infrastructure solutions as well as automation, drive and software solutions for industry. The company is also a leading provider of medical imaging equipment – such as computed tomography and magnetic resonance imaging systems – and a leader in laboratory diagnostics as well as clinical IT. In fiscal 2014, which ended on September 30, 2014, Siemens generated revenue from continuing operations of €71.9 billion and net income of €5.5 billion. At the end of September 2014, the company had around 343,000 employees worldwide on a continuing basis.
Further information is available on the Internet at www.siemens.com
Reference Number: PR2015100042EMEN
Mr. Heiko Jahr
Energy Management Division
Tel: +49 (9131) 7-29575
Heiko Jahr | Siemens Energy Management
Researchers take next step toward fusion energy
16.11.2017 | Texas A&M University
Desert solar to fuel centuries of air travel
16.11.2017 | SolarPACES
The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.
Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
21.11.2017 | Physics and Astronomy
21.11.2017 | Physics and Astronomy
21.11.2017 | Life Sciences