Alstom’s first commercial success with ALSPA Series 6 has been quick with over 15 power plants being currently equipped with this new platform
ALSPA architectures have been successfully rolled out on several large sites in the Middle East. One of the largest installations, and most advanced project, is located in Fujairah for the new desalinisation plant. The control system ensures optimal co-ordination of the traditional power plant island consisting of a combined heat and power cycle feeding a desalinisation unit.
The ALSPA system controls all power plant process units and offers a single window harmonised environment across all plant process items. The system controls both the power plant and the desalination plant, allowing consistent operation and control through the same ALSPA control philosophy.
The project demonstrates the scalability of the architecture to power and other processes, positioning the architecture as a leading component of the deployments of future ecocities combining all related grids – electricity, heat, water and carbon dioxide – into a consistent control and optimisation architecture.
MORE ON ‘FUJAIRAH 2’
The Fujairah 2 power plant, in Qidfa, Fujairah, will support the fast-growing need for potable water and electricity in the Northern Emirates, and is expected to be operational by mid-2010.
The power plant is Alstom’s first contract with an independent water power producer (IWPP) in the Middle East, and demonstrates Alstom’s capability to offer integrated and optimised powerdesalination solutions.
Fujairah 2 will be the largest newly constructed independent water and power project in the UAE. It will produce 2000 MW and 130 MIGD, or million imperial gallon per day (591 million litres), of potable water in the desalination plant. The power plant is built around Alstom’s GT26 gas turbine, and will be able to operate over a wide range of power outputs whilst maintaining full desalination capacity.
POWER OUTPUT
The Abu Dhabi Water and Electricity Company (ADWEC) requires that a power plant is able to operate within a wide range of power output (60-100%), to sustain the high demand of airconditioning in summer, versus lower needs in winter, whilst maintaining full desalination output.
Potable water in this region is always in great demand, whilst power consumption dramatically increases during the peak summer months, especially in the Northern Emirates. The new station is regarded as a quantum leap in keeping pace with the development of Fujairah and the Northern Emirates. This growth also includes the agricultural and population expansion in the eastern region of Abu Dhabi.
The Fujairah 2 power plant will support ADWEC in its role of power and water supplier in Abu Dhabi. An important technical requirement was the dualfuel capability to secure both water and electricity supplies, if the natural gas supply is disrupted.
CONSORTIUM CONTRACT
The contract was signed with the project development consortium composed of the International Power Plc and Marubeni Corporation, which are implementing the project with the Dhabi Water and Electricity Authority (ADWEA). It was ADWEA, a government-owned major utility, which initiated the project. A consortium comprising Alstom and Sidem is building the plant, with Alstom supplying the power plant and Sidem the desalination plant.
Under the contract, Alstom is providing all engineering, procurement and construction services for the turnkey supply of the 2000 MW combined-cycle power plant based on the GT26 gas turbine, including the in-house supply of all main equipment, which comprises five GT26 gas turbines, five heat recovery steam generators (HRSG), three steam turbines, eight turbogenerators and associated control systems. Sidem is supplying the 130 MIGD hybrid desalination plant, based on multi-effect distillation and reverse osmosis technologies.
