Plantweb And Ovation Installed At Ukrainian Plant

Emerson Process Management has installed its Plantweb digital plant architecture with the Ovation control system at Unit 1 of the Dnestrovskaya pumped storage power plant (PSPP). This hydroelectric plant is located on the Dniester river, near Novodnestrovsk, Ukraine. Commissioned in December 2009 by the Ukrhydroenergo Open Joint Stock Company (OJSC), Unit 1 is the first of the plant's seven 421MW units. When all units are operational, the plant will have a total pump-mode capacity of 2,947MW.

Pumped storage electricity is useful for load balancing; it enables water accumulated at night or during off-peak hours to be used to satisfy electricity needs during times of peak demand. As such, the Dnestrovskaya plant is an important source of renewable and reliable power in Ukraine. Emerson's Ovation control system is said to be integral to the efficient operation of Dnestrovskaya PSPP Unit 1. The Ovation system, which manages 2,300 input/output points, monitors and controls all major equipment and processes, including the Turboatom hydraulic turbine, the Electrotyazhmash pump turbine generator, lubrication and cooling, drain and leakage systems, temperature monitoring systems, auxiliary equipment and the main electrical system.

It also interfaces to the turbine governor, the vibration system and the excitation system, as well as controlling the 330kV substation. Unifying control under Ovation results in unit-coordinated control, which enhances unit-wide compatibility and contributes to improved unit stability, responsiveness and operating efficiencies, the tighter overall control of plant operations and a more streamlined view of key plant parameters, according to Emerson. The system's automatic and global positioning system (GPS) synchronisation also contributes to enhanced grid stability.

While the Ovation system is integrated with the regional and national dispatch centres, it is configured so that all of the unit's subsystems can be controlled locally as well. Emerson's scope of work included engineering, installation supervision, start-up and commissioning. Ovation technology serves as the automation and control foundation for all equipment and processes at Dnestrovskaya PSPP Unit 1, according to Bob Yeager, president of the Power and Water Solutions division of Emerson.

He said: 'Rather than relying on a number of separate automation systems for different plant functions, our Ovation system offers a single automation platform that results in a comprehensive, integrated and cost-effective control solution. 'Our Ovation control system was built specifically for all types of power generation facilities, whether they utilise fossil fuels or renewables, such as solar, biomass or, of course, hydro,' added Yeager.

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