Cummins launches gas genset range with blackstart capability
Cummins Power Generation has launched a new lean-burn gas generator set product line.
Cummins says the new 50 Hz products, which extend the capabilities of the existing QSV91G generator range, “offer exceptional transient performance and improved fuel capability, allowing them to run on low methane number fuels and produce lower emissions”.
The new line marks the debut of a 2 MWe variant (pictured), alongside the improved 1540 kWe and 1750 kWe models.
Primary applications for the new models include prime, peaking and combined heat and power, as well as continuous operation in island mode and standby power.
Cummins says the new models are “ideal for remote locations where grid power is unavailable, such as mining, oil or gas fields, or in regions of the world where grid power is either unreliable or inaccessible”.
The company adds that a major feature of the new line-up is their blackstart capability – the ability to bring the generator set quickly into operation without relying on an external electricity source such as the grid. “Black start capability frees the generator set from grid dependency and allows its deployment anywhere there is a need,” says Cummins. “The new product line is also capable of running in high altitude and high ambient temperature environments with minimal derate.”
Oklahoma deal marks US first for MHI’s J-Series gas turbine
Mitsubishi Heavy Industries has won its first US order for its J-Series gas turbine.
The turbine is for Chouteau power station, a 495 MW gas combined-cycle plant being built by Oklahoma’s state-owned electric utility, Grand River Dam Authority (GRDA).
As well as the M501J gas turbine, MHI will provide an SRT-50 steam turbine and a generator. The gas turbine will be made at MHI’s manufacturing base in the US in Savannah, Georgia.
The generator will be supplied by Mitsubishi Electric Corporation.
Chouteau power plant will be built near Tulsa and is intended to help GRDA meet new emissions regulations by reducing its dependence on coal-fired power generation.
World’s first large-scale transformer that uses vegetable oil
Siemens has produced the world’s first large-scale transformer that uses vegetable oil.
The transformer (pictured) will link the 380-kV ultra-high voltage level with the 110-kV grid in the Bruchsal-Kändelweg substation plant near Karlsruhe, Germany.
Until now, Siemens has used vegetable oil insulation in power transformers with voltages of up to 123 kV – the new transformer is designed for 420 kV.
Transformers are usually cooled and insulated with mineral or silicone oil, but vegetable oils are environmentally friendlier and less flammable.
Siemens’ new transformer weighs just under 340 tonnes and contains 100 tonnes of insulating oil, which comes from renewable vegetable resources.
The company says the device is the world’s first power transformer on the 420-kV ultra-high-voltage level that does not require proof of its water hazard classification.
TransnetBW, a grid operator in the German state of Baden-Württemberg, will put the transformer into operation in July.
Heinzmann actuator picked for Siemens gas turbine
Control systems company Heinzmann UK has revealed that its variable guide vane actuator (pictured) has been chosen by Siemens to be used in its gas turbine SGT-400 core engine.
The actuator is all electric, operating without hydraulics or pneumatics, and it was chosen by Siemens following extensive development.
Currently there is serial production of 50 of the actuators per annum and Heinzmann will now develop a similar smaller unit for the Siemens engine.
New high-voltage hybrid switchgear unveiled
ABB has launched its 420 kV high-voltage hybrid switchgear (pictured in its open state). The product is part of ABB’s Plug and Switch System (PASS) family of hybrid high-voltage switchgear.
The latest 420 kV PASS hybrid modules integrate the functions of a circuit breaker, disconnector and earthing switch, as well as current and voltage transformers in one product.
According to ABB, the compactness of the switchgear module can help reduce the footprint of the switchgear bay where it is installed by up to 50 per cent when compared with air-insulated switchgear that have comparable ratings.
The PASS product family now covers voltages from 72.5 kV to 420 kV, with breaking current capability ranging from 31.5 to 63 kA.
Giandomenico Rivetti, head of ABB’s high voltage business, said: “The innovative design features of this new product enable ease of transportation and make it quick and easy to install.”
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