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gas turbines

Following a successful market launch, the MGT series of gas turbines is now completing its project references. In the Rehden compressor station operated by Gascade Gastransport GmbH, one of Germany’s largest gas transportation companies, an MGT 6200 two-shaft turbine will in future drive a centrifugal compressor (MAN RV 050) thereby increasing the station’s natural gas transportation capacity.

“With the additional compressor train from MAN we shall be able to significantly raise the capacities of our long-distance gas pipelines from 2017,” says Heidi Bernhardt, Head of Systems Engineering at Gascade. “In addition to the technical performance data, the experiences we had during close collaboration on previous projects was a further aspect that led to our decision to choose MAN once again.”

Gascade as a long-term customer operates numerous stations with MAN products, including the station in Rehden, the largest hub in the company’s supply network. MAN Diesel & Turbo offers both motor-driven and turbine-driven compression solutions for use in compressor stations. In Rehden, for instance, two electrically driven Man Mopico® (Motor Pipeline Compressors) with magnetic bearings have already been in use for years.

“In addition to a precisely coordinated design of compressor and turbine, the machine train currently on order boasts further highlights,” says Matthias Grapow, Head of the Midstream Segment at MAN Diesel & Turbo. For example, even the low volume of seal gas leakage from the compressor is returned to the gas system and not, as is normally the case, into the atmosphere. This represents a further contribution to environmental friendliness in the operation of gas transportation systems. “As well as the highly individual design of the entire machine train,” says Grapow.

Siemens hat seit dem Frühjahr 2015 Aufträge über insgesamt sechs SGT6-8000H-Gasturbinen aus Mexiko erhalten. Since the spring of 2015, Siemens has received orders for six model SGT6-8000H gas turbines from Mexico.

Siemens has received an order to supply two SGT6-8000H gas turbines and two SGen6-2000H generators for the Empalme II combined cycle power plant in Sonora, Mexico. The plant will have an installed electrical capacity of 791 megawatts (MW). The customer is a consortium consisting of the Spanish engineering and construction companies Duro Felguera and Elecnor and the Mexican subsidiary Elecnor Mexico. The operator of the plant will be the state-owned power provider Comisión Federal de Electricidad (CFE). Commercial operation is scheduled for April 2018. Additionally, Siemens will provide technical assistance during construction and commissioning of the plant. Since the spring of 2015, Siemens has received orders for six H-class gas turbines from Mexico.

“CFE is becoming a pioneer in the integration of environmentally-compatible and resource-saving power generation solutions in Latin America. With these steps, Mexico will become an energy hub in the region and a reference for other similar projects”, declared José Aparicio, Vice President of the Siemens Power and Gas Division for Latin America.

A total of six model SGT6-8000H gas turbines are to be installed in the Empalme I (770 MW), Empalme II (791 MW) and Valle de México II (615 MW) combined cycle power plants. Siemens is also supplying two SGT6-5000F gas turbines for the Tula plant located in Hidalgo, Mexico. These four power plants have a combined electrical capacity of 2,727 MW, enough to supply one million households in Mexico with electricity. Siemens has sold 76 H-class gas turbines worldwide to date. The SGT-8000H fleet, with 16 units currently in successful commercial operation, has already achieved more than 195,000 fired hours.

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Siemens has received an order to supply six gas turbines, four steam turbines and ten generators for a new combined-cycle power generating facility in Qatar with an integrated seawater desalination facility. Siemens’ customer is Samsung C&T, which is building the entire complex together with its consortium partner Hitachi Zosen. The end-customer is the project company Umm al Houl, a consortium comprising the Qatar Foundation (QF), Qatar Petroleum (QP), Qatar Water and Electricity Company (QWEC), Mitsubishi Corporation (MC) and Tokyo Electric Power Company (Tepco).
With a total electrical output of 2.5 gigawatts, and up to 136 million imperial gallons (618 million liters) of drinking water per day, the plant will deliver almost one quarter of the nation’s installed power generating capacity. It will ensure adequate power and water supply to accommodate seasonal fluctuations and major events. Commissioning of the first phase is scheduled for 2017, with commissioning of the entire complex scheduled for mid-2018.

The new power plant is to be located in the Umm al Houl Economic Zone in the south of the country between Al Wakrah and the industrial city of Mesaieed. The plant will consist of two power blocks, each in a 3+2 configuration – each block to consist of three gas turbines which will be used to generate the steam to drive two downstream steam turbines. Siemens’ scope of supply includes six SGT5-4000F gas turbines, four SST5-4000 steam turbines and ten SGen5-1200A-series generators as well as technical support for the project’s field erection and commissioning phases.

Siemens has now received two major orders from Qatar in a short span of time. Besides the major order for power plant components, Siemens has also signed a long-term service contract with the gas company Dolphin Energy Limited, headquartered in Abu Dhabi. Siemens will provide service and maintenance for nine aero-derivative gas turbines from former Rolls-Royce Energy and the associated nine Dresser-Rand compressors over the contract period of eighteen years.

Siemens has been partnering with Qatar to power its ambitious growth aspirations across various sectors in the past years. Siemens and Doosan Heavy Industries & Construction Co. Ltd. formed a consortium, which in 2009 completed the combined-cycle power plant unit Ras Laffan B, which generates close to 1,000 megawatts. This was followed by an order in 2012 for turnkey supply of a streetcar system as well as intelligent solutions for power distribution. Siemens then received an order from Qatar in 2013 for a sewage treatment system. In August the company was awarded a major order by the state-run Qatar General Water & Electricity Corporation (KAHRAMAA) for turnkey supply of 18 electrical substations.

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Siemens has signed a contract for the delivery of 18 model SGT-800 industrial gas turbines to Thailand and will also provide technical field assistance for installing the units. The company will also be responsible for the long-term service for the turbines. Six of the turbines have a capacity of 53 MW each, while the capacity of the remaining twelve units is 50.5 MW each. The units are to be installed in nine combined cycle cogeneration power plants with a total installed electrical capacity of 1.100 MW. Customer is TEC Project Services Corporation (TPS), a subsidiary of the Japanese Toyo Engineering Corporation (TEC). TPS is erecting the industrial power plants for the Thai company Gulf. Gulf MP is a joint venture of the Thai Gulf Energy Development Co., Ltd. and the Japanese Mitsui & Co.

Thailand is with the Small Power Producer (SPP) program promoting distributed power production facilities to ensure reliable power generation for industrial parks and to also make Thailand more attractive to foreign investors. The nine industrial power plants, each equipped with two SGT-800 gas turbines, are to be erected in five new industrial parks: Eastern Seaboard Industrial Estate, Hemaraj Eastern Seaboard, Hi-Tech Industrial Estate, Hemaraj Rayong Industrial Land and Hemaraj Saraburi Industrial Land.

Thailand is the largest market for Siemens for this gas turbine model, with 70 SGT-800 units having been sold to date. Twenty of these are already in commercial operation. The market share in Thailand for SGT-800 was as high as 65% in the last five years.

As of June 2015, 270 of the model SGT-800 gas turbines have been sold worldwide and the fleet has accumulated more than three million operating hours. The 53-MW rated version remains true to the tried-and-tested and reliable design of the SGT-800 gas turbine, with only minor improvements being implemented, such as optimized and re-staggered first compressor stages, an improved cooling design for the turbine vanes and adjusted clearances in turbine stages 1 and 2. All improved components are fully retrofittable within the 50.5 MW rated version.

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