Asia Power Week 2017

Sessions Speakers Exhibitors Products Press Releases Floor Plan Buzz

Ansaldo Energia GT26 – The Large Gas Turbine for Flexible and Reliable Power Generation - The Evolution of the Engine and the Recent Experience in North Bangkok 2 Power Plant (Room Nile 2)

Operation Flexibility as a key market requirement is becoming therefore increasingly more important in the gas fired-power industry. High level of base-load and part-load performance, superior operational flexibility and reliability offered by the advanced large gas turbine GT26 support customers to fulfill their load balancing role especially with growing intermittent power generation from diverse sources. The architecture of the GT26 with its sequential combustion system opens the door towards superior all-round efficiency, fast start, ramping and last but not least outstanding turn-down capability, where emission compliant operation has been demonstrated down to a level as low as 25% combined cycle load, and even down to 15% combined cycle load while switching off the second combustor. Beginning of January 2017, one year of commercial operation has been successfully achieved at North Bangkok 2 combined cycle power plant in Thailand, which feature two GT26 gas turbines in a single-shaft configuration. For North Bangkok 2 project, Electricity Generating Authority of Thailand (EGAT) selected the latest upgrade of the GT26 gas turbine, which is the fourth evolutionary development stage since the product’s initial introduction in the mid 1990’s, and each GT26 has accumulated more than 10’000 operation hours by end of January 2017, allowing EGAT to maximize profits with the exceptional level of availability and operational flexibility provided by the latest GT26. Due to the takeover of Alstom heavy duty gas turbines technology and assets, Ansaldo Energia has broadened its product portfolio for heavy duty gas turbines in 50 Hz and is offering both cost-effective as well as highly efficient and flexible combined cycle solutions fitting to the traditional and emerging needs of power markets in Asia supporting the ongoing change in the energy mix. The paper reports about GT26 operational flexibility, key design features, the latest orders and technology references.