Gas Turbine Reapplication: A Market Comeback

In recent years there has been a resurgence in existing gas turbine power plants being picked up and reapplied throughout the world. Many thousands of megawatts have recently been relocated from Asia to West Africa; Europe to Australia; Europe to East Africa; within USA; within West Africa; and so on…

Factors Driving Turbine Reapplication

Factors that have contributed to the return of this segment of the power market include the following: the availability of retired units; the emergence of newly available low-cost gas fuel in international markets; the need for fast-start gas turbines; and the ability to benefit once again from quickly installed units operating in the domestic US peaking power market.

The California ISO market’s demand for fast start power has triggered relocation projects in surrounding areas to provide power for that market. Also, the inconsistency of renewable power, particularly wind, in Texas ERCOT and other western states has created a need for back up for both power and for grid stability. This situation, combined with the abundance of natural gas, make the case for relocating fast start gas turbines and other gas fired generators into these areas.

Contributing to Dynamic Power Markets

The fast delivery of these reapplied gas turbines, with lower capital costs than new, and the ability to operate on a wide range of fuels make them an important solution to many of the opportunities in today’s dynamic power markets. The modular design of a gas turbine package, with a much smaller footprint per Mw than reciprocating engines, allows them to be quickly and easily installed in even the most remote locations. Although not having the same efficiency of today’s advanced-class gas turbines, these older units can still provide a very important contribution to emerging grids and the peaking power market.

Each relocation project has its own unique requirements. These may include the need for asset refurbishment, fuel conversions, frequency conversions (if moving between 50Hz and 60Hz countries), other upgrades and modifications, and installation of equipment necessary to allow the units to operate in compliance of local environmental regulations. Logistics are an extremely important part of a relocation project, with care taken to ensure dismantled equipment is identified, tagged and removed properly so as to ensure an efficient, low-cost installation at the new site.

TTS Energy Services: At the Forefront of Gas Turbine Reapplication

Many relocation projects are undertaken by entrepreneurial developers that recognize an opportunity to quickly provide cost-effective power to a specific market. However, these developers often do not have the existing technical and commercial infrastructure to efficiently deal with all aspects of building a power plant, as well as obtaining all the required contracts and permitting.

TTS Energy Services is at the forefront of the gas turbine relocation market. We are responsible for the relocation of close to 90 gas turbines having a total of almost 3,000 megawatts. We have been involved at all levels including turnkey Engineer / Procure / Construct (EPC) contracts, project management and design engineering, upgrade and modification services, cost control, project feasibility studies and site supervision.

With over 30 years of experience in the turbine relocation market, we are the ideal partner for any reapplication project.

How Can We Help You?

Contact TTS and speak with a specialist to discuss and evaluate your possible opportunities for gas turbine relocations, as well as to inquire about assistance with your current relocation project. Leave us a message or call +1 (407) 677-0813 to speak with an expert today.

CCJ 2020 Best Practices Award: Hermiston Generating Plant

Hydrogen purge remote activation helps keep employees safe

The Hermiston Generating Plant in Oregon was recently awarded the CCJ 2020 Best Practices Award for their installation of a hydrogen purge remote activation. TTS was proud to assist in this project, providing critical upgrades to the control system. The project provided greater safety for on-site engineers and improved automation which decreased plant downtime.

Read the full press release from CCJ of the project scope below:

Challenge. Provide an automatic remote means to purge a hydrogen-cooled generator without dispatching employees to the area.

Many 1990s-era 7FH2 generators were equipped with an automatic purge system that activated when hydrogen purity at the seals dropped below a specified set point. However, the controls were located in the collector compartment and could not be safely accessed if a hydrogen leak in that compartment was suspected. In the event seal oil was lost it would be unsafe to approach the collector compartment to activate the purge. If the controls were left in maintenance for any reason, there would be no way to activate the purge without endangering an employee.

Screenshot of the Hydrogen purge option in softwareSolution. Since the automation was already in place along with solenoid-activated hydrogen shutoff valves, hydrogen vent valve, and CO2 admission valve, all that was needed was to move the controls to the Mark V. Employees of Hermiston and TTS Energy Services, Orlando, Fla, modified control wiring and re-routed it to the Mark V. Because of the significant safety and liability concerns associated with hydrogen, a controls consultant was engaged to modify the Mark V logic and create a purge button to activate the purge from the Mark V HMI (photo right).

Results. Now control room operators can monitor hydrogen purity remotely and perform a preemptive purge in the event they lose seal oil, without putting employees or equipment at risk. The total cost of the project was less than $10,000.

About TTS
At TTS, we specialize in innovative and high value-engineered solutions that help our clients maintain, upgrade, and enhance their power generation and gas compression assets. Learn more at our website TTS Energy Services or contact us at (407) 677-0813.