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The Russian government expects the country’s demand for energy to rise by 50 percent until 2030. As newly built plants alone will certainly not suffice to cover this increase, Russia is determined to increase the efficiency of its existing power plant fleet by 20 percent. That’s why the Kirishi power plant, which supplies Russian cities such as Saint Petersburg and Murmansk with electricity, was thoroughly modernized: Siemens turbines, generators, and control technology turned the plant’s “unit 6” from an aging steam power plant into the country’s most powerful combined cycle plant and raised the unit’s efficiency from 38 to 55 percent.
The repowering of the Kirishi plant is a beacon project for the modernization of Russia’s power plant fleet. “For the production of the same amount of power, we use one-third less gas,” says Grigory Otpetev, an engineer who has been working at the plant since its construction in 1965.
The plant’s existing steam turbine was upgraded with two 279 MW gas turbines, as well as a new control system and two generators, were installed. The result is a combined cycle power plant that nearly tripled the installed capacity of the unit from 300 to 800 MW. The higher efficiency of the unit makes sense not only economically, but also in ecological terms, as combined cycle technology offers a much better fuel utilization factor than single cycle steam power generation.
More upgrade projects are expected to follow. The owner of the Kirishi power plant, Russian power generation company OGK-2, has earmarked a substantial amount of money for the modernization of its thermal power station fleet until 2016.
Siemens is continually striving to further maximize turbine and generator efficiency – even for installed systems. Thanks to the use of Siemens turbines and generators, the efficiency of combined cycle power plants has increased by as much as 10 percent during the last 20 years. The efficiency of state-of-the-art combined cycle power plants equipped with Siemens technology is record-breaking. Siemens generators offer efficiency rates of up to 99 percent. What’s more, the Siemens R&D engineers continually improve turbine and generator technology even further.
Siemens turbines and generators are renowned for their exceptionally long life. That’s why important technical advances and developments are also made available for the upgrade of installed units. As blade design is a key factor in overall plant efficiency, gas turbines, for instance, can be easily upgraded during a scheduled blade replacement.
Continuously upgraded, a 15-year-old SGT5-4000F gas turbine provides an extra 50 megawatts today – enough power for about 230,000 people.
Siemens’ SGT5-8000H gas turbine takes CCPP efficiency to the next level. The Siemens SGT5-8000H gas turbine redefined the efficiency benchmark for gas turbines in combined cycle operation. Siemens’ new generation H-class gas turbine series was developed with a focus on both environmental protection and cost efficiency. In combined cycle operation the SGT5-8000H reaches a world-record efficiency rate of more than 60 percent and delivers 570 megawatts of electric power. A 60 Hz version, called the SGT6-8000H is also available. The turbine’s record-breaking level of efficiency was made possible by technical innovations in
The H-class gas turbines offer an ideal combination of established technology and innovation. The functional and mechanical design of the new engine is based on the experience gained with previous 50 Hz and 60 Hz engines. The SGT5-8000H and SGT6-8000H gas turbine development team involved more than 250 engineers working in Erlangen, Berlin, and Mülheim in Germany, as well as in Orlando and Jupiter in Florida, USA. An additional 500 employees were involved in the manufacturing, assembly, and preparations for testing the prototype engine.
Many Siemens products help reduce our environmental footprint and combat climate change. These products make up the Siemens Environmental Portfolio and usually offer a threefold advantage: They benefit the customers through low energy costs and higher productivity. They help protect the environment and the climate. They preserve and improve the living and environmental conditions of future generations.
The Siemens Environmental Portfolio largely consists of capital goods with long life cycles. It mainly comprises products and systems, such as combined cycle power plants and intelligent building technologies that are far more energy-efficient than comparable solutions, renewable energy systems and components, such as wind turbines and steam turbines for solar-thermal power plants, and environmental technologies for cleaner water and air. To qualify for the Siemens Environmental Portfolio, which is annually approved by the Siemens Sustainability Board and reviewed by independent auditors, a product or solution must fall into one of these three categories.