Gas Turbine Controls Installed Within Aggressive Timeframe At Combined-cycle Power Plant

Phil Black - PII Editor 07/11/2017

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Retrofitting controls on Alstom GT13 combustion turbines with Ovation™ technology expected to boost reliability and provide flexibility to support future expansion at DK6 plant

ENGIE has awarded Emerson a contract to replace legacy combustion turbine controls with Ovation™ turbine control technology at its DK6 800-MW combined-cycle power plant in Dunkirk, France.

The Ovation controls will be installed at each unit during a 13-day outage – a compressed timeframe for a turbine controls replacement project. This marks the first time a vendor other than the turbine OEM has been selected to retrofit GT13 combustion turbine controls.

“We considered different suppliers, and ultimately chose Emerson because its Ovation system met our requirements for support and maintenance over the expected 20-year life of the plant,” said DK6 Plant Manager Bernard Rulmont.

Flexibility was another factor in ENGIE’s decision to select Emerson, according to Rulmont.

Ovation is an open system, which gives DK6 personnel the ability to modify applications or adapt the controls to accommodate future plant expansion, as well as new operation modes and fuels – all without the need for a costly service call.

“Emerson understands the impact efficient turbine control has on achieving optimal levels of reliability and availability,”

said Bob Yeager, president, Power & Water, Emerson Automation Solutions.

“Our Ovation technology uses the same hardware and software platform for turbine control as it uses for other plant controls, such as heat recovery steam generators, burner management systems, generator excitation and high-fidelity embedded simulation. This single platform architecture significantly reduces O&M automation-related expenses and simplifies lifecycle management and planning.”

The first retrofitted power block is expected to be back online in September 2018; the second in July 2019. Emerson’s comprehensive project scope includes dismantling the existing controls, engineering and installing the new controls, and assisting with commissioning and startup.