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Press Release23 April 2019Gas and PowerHouston
Siemens to upgrade India's oldest HVDC link
The picture shows a view of the alternating current yard at the HVDC back-to-back converter station in Georgia.
"We are proud that POWERGRID trusts in Siemens engineering excellence to breathe new life in the first HVDC system in India," said Mirko Düsel, Head of Transmission Solutions at Siemens Gas and Power. "We look forward to extending the lifespan of the station and enhancing the installation's efficiency by implementing our state-of-the-art technology."
The project's scope includes the installation of new thyristor valves, converter cooling system, HVDC control and protection system, direct current measuring devices and surge arrestors. The key components for the upgrade - the thyristor valves as well as the HVDC control and protection system – will be delivered from the Indian facility in Goa.
Latest light-triggered thyristors with a higher voltage blocking capability will replace the old electrically-triggered thyristors. Thus, the number of thyristors will be halved resulting in less power loss. After completion of the refurbishment, the Vindhyachal HVDC station will ensure a reliable power supply.
With a HVDC back-to-back link, two independent neighboring transmission networks with incompatible electrical frequencies, or different operating philosophies, are connected. Additionally, it prevents the power increase in the short circuit levels of the network. An HVDC back-to-back system can also be used for controlled power transfer between two separated alternating current transmission systems.
For further information on HVDC, please see
www.siemens.com/hvdc
www.siemens.com/hvdc
For this press release
@Siemens_Energy
@Siemens_Energy
Siemens Gas and Power (GP) is a global pacesetter in energy, helping customers to meet the evolving demands of today's industries and societies. GP comprises broad competencies across the entire energy value chain and offers a uniquely comprehensive portfolio for utilities, independent power producers, transmission system operators and the oil and gas industry. Products, solutions and services address the extraction, processing and the transport of oil and gas as well as power generation in central and distributed thermal power plants and power transmission in grids. With global headquarters in Houston in the U.S. and more than 64,000 employees in over 80 countries, Siemens Gas and Power has a presence across the globe and is a leading innovator for the energy systems of today and tomorrow, as it has been for more than 150 years.
Siemens AG (Berlin and Munich) is a global technology powerhouse that has stood for engineering excellence, innovation, quality, reliability and internationality for more than 170 years. The company is active around the globe, focusing on the areas of power generation and distribution, intelligent infrastructure for buildings and distributed energy systems, and automation and digitalization in the process and manufacturing industries. Through the separately managed company Siemens Mobility, a leading supplier of smart mobility solutions for rail and road transport, Siemens is shaping the world market for passenger and freight services. Due to its majority stakes in the publicly listed companies Siemens Healthineers AG and Siemens Gamesa Renewable Energy, Siemens is also a world-leading supplier of medical technology and digital healthcare services as well as environmentally friendly solutions for onshore and offshore wind power generation. In fiscal 2018, which ended on September 30, 2018, Siemens generated revenue of €83.0 billion and net income of €6.1 billion. At the end of September 2018, the company had around 379,000 employees worldwide. Further information is available on the Internet at www.siemens.com.
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Siemens AG
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Germany
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