Engine & Turbine Technology
management and general design for this part, and also support the consortium members in their scope of work and contribute to the construction and commissioning of the plants. Te use of USC, which gives higher electrical output while burning less coal, will enable PGE to reduce its environmental impact and meet regulatory requirements. Tis is particularly important in Poland, where around 90 percent of fuel for electricity generation is coal or lignite. Alstom previously retrofitted units two, three and
four at Opole to uplift their efficiency, and successfully completed last year the USC unit 14 at Bełchatów, Poland’s most efficient coal-fired unit. Alstom’s second contract, worth €85 million, has been awarded Bharat Heavy Electricals Limited (BHEL) to supply two 800 MW supercritical boilers for Darlipalli super thermal power project (STPP) located in Sundergarh, in the State of Odisha, India. Tis project forms part of NTPC bulk 800 MW
tender. Under the scope of the contract, Alstom – the sole licensor for BHEL supercritical technology – will design the 800 MW supercritical boilers and supply identified pressure parts along with windboxes, pulverisers and airpreheater components. Te group will also assist BHEL with technical advisors during the erection and commissioning of the units. Te units are expected to be commissioned starting in 2017.
Combined-cycle power plant An Germany, the Erfurt municipal utility has put the extension of its Erfurt Ost combined-cycle power plant into operation. At the core of the plant is a Siemens SGT-700 industrial gas turbine. Siemens also supplied an SGen5-100A generator and was in charge of the commissioning of the turbine and the generator. Te company will also be responsible for service for the major components in the coming years. Te SGT-700 industrial gas turbine has an electrical
capacity of up to 31MW. Te thermal energy that is generated is also utilised for steam generation with operation of the existing steam turbine. In addition to electricity, the extension of the
Erfurt Ost combined-cycle plant will supply district heating for the city of Erfurt. Substantially higher fuel efficiency, here natural gas, is achieved through this co-generation of heat and power. Te power plant also remains extremely flexible thanks to the use of a heat accumulator and to the rapid start-up and shutdown times for the SGT-700. Tis gas turbine can provide full capacity within 30 minutes of a hot start. Tis enables the power plant to be used both as a peak-load power plant and to function as a back-up for renewable energy sources (Fig. 1). Tis expansion of the power plant will enable the municipal utility to cover nearly the entire electricity demand for Erfurt.
Strategic partnership In March, Mitsubishi Heavy Industries and Ata Kombine Çevrim Santrali Elektrik Uretim Anonim Sirketi, a member of the Urundul Group based in Istanbul, Turkey, signed a co-operation and strategic partnership agreement to invest in 520MW natural gas combined cycle gas turbine (CCGT) power plant to be built in Kırklareli province. Te power plant will be built by a consortium consisting of contractors Mitsubishi Hitachi Power Systems and Mitsubishi Hitachi Power Systems Europe. Construction is expected to be completed within approximately 30 months and the power plant is scheduled to be put into operation in 2016. Te partnership with Urundul Group represents
Mitsubishi Heavy Industries’ fourth investment into an overseas power generation project. Te three previous investments were the independent power producer AES Energia Cartagena of Spain, Kaliakra Wind Power of Bulgaria, and Pocheon Power of Korea. l
US gas-fired plant challenged on environmental grounds T
he Salem Harbour power station run by Dominion in Salem, Massachusetts, USA, currently
burns coal but it due to shut down in June and be replaced with a gas-fired plant following the state’s approval of the plan. However, environmental advocates
are challenging this approval in the Massachusetts supreme judicial court under a 2008 state law aimed at reducing greenhouse gas emissions. As a result, the operator of the region’s
power grid is warning that a delay in completing the new Salem plant over the
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next two years could lead to electricity shortages, and possibly rolling blackouts. According to a report in The Boston
Globe, environmental advocates say converting the 1950s plant will not do enough to curb greenhouse gas emissions. The Conservation Law Foundation,
the Boston advocacy group bringing the case, says governor Deval Patrick’s administration failed to adequately consider its own climate change law when state energy officials approved the Salem plant. Compared with coal, natural gas produces far lower levels of greenhouse
gases, environmentalists acknowledge, but the state won’t meet the aggressive pollution reductions mandated by the law if it continues to rely on fossil fuels for energy. “This is the place where we decide whether or not we are going to make good on our promises on climate, or whether we are going to continue doing more of the same. If we don’t get this right now, there is no way we are going to meet our climate mandate,” Shanna Cleveland, a senior attorney with the group, told the newspaper. l
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