Emergency gensets meet power challenge

Paul Boughton

Ali Guzel reports on how emergency power gensets are used in the event of case of grid failure.

Interrupted services due to power outages are history for Türk Telekom's customers in Istanbul. Over the past few years, three emergency power gensets from MTU Onsite Energy have reliably generated power for private telephone and internet use as well as banks, education authorities, the police and other security services in case of grid failure.

Turkey's rapid economic growth is a challenge for its national power networks, which is why many private Turkish companies rely on MTU Onsite Energy to provide continuous power based on gas engines and emergency power generated by diesel units. The company has already installed systems producing 150MW of power in the country and 76 units were added in 2013 alone.

Rising demand

The Turkish Electricity Transmission Company estimates that the annual rise in electricity demand until 2023 is likely to be around 6 per cent.

The power supply challenge is most acute in the city of Istanbul, where one fifth of the nation's population is located.

Loss of systems data

A large number of businesses and residents use Türk Telekom's services - the consequences of a loss of systems data for these customers would be devastating. In order to update its systems, the company replaced the existing emergency power gensets at its Istanbul headquarters.

Since July 2011, three Type DS 2595 D5S emergency gensets from MTU Onsite Energy powered by three Type 16V 4000 G63 diesel engines produce 5,190kVA of electric power.

Following a market demand analysis for the Turkish communications network, Türk Telekom chose MTU Turkey to completely equip their 144 sq metres underground facility.

MTU supplied everything from gensets through switch cabinets to electrical plant and also ensures that the manager receives a text message as soon as a power outage occurs and the gensets have started up.

Prior to installation, the units were subjected to comprehensive and thorough tests involving simulated load imposition on the engine manufacturer's own test stands at its headquarters in Friedrichshafen.

The gensets run in parallel and each can serve as a back-up for the other. Their high torque means the engines have rapid and high load imposition capability and can achieve operating status, stable voltage and frequency, within nine seconds.

Load can be imposed from this point on. Türk Telekom's central facility needs around 2,200 kVA of energy per hour.

Thirty-three per cent of Turkey's Internet volume emanates from here. The station is Türk Telekom's third biggest in the country and the company has a total of around 5,000 individual stations which are gradually allowing it to adapt to the ever expanding telecommunications scene.

Türk Telekom's use of emergency power technology from MTU Onsite Energy is not limited to Istanbul. At its location at Erzurum in the east of the country the company has installed two MTU gensets with Series 2000 engines.

MTU Onsite Energy is a brand of Rolls-Royce Power Systems AG. It provides diesel and gas-based power system solutions: from mission-critical to standby power to continuous power, heating and cooling. MTU Onsite Energy power systems are based on diesel engines with up to 3,400kW power output, gas engines up to 2,150kW and gas turbines up to 50,000kW.

For more information at www.engineerlive.com/ipe

Ali Guzel is Assistant Managing Director, MTU Turkey, Istanbul, Turkey. www.mtuonsiteenergy.com

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