Coordinated Control Systems
Coordinated control systems enable the boiler
and associated steam turbine to be controlled as a unit. The system
enables the steam demand placed upon the boiler to be maintained
within its delivery capability. Megawatt Load Run-back is automatically
invoked upon the loss of specified vital plant equipment.
FPS can engineer, design and manufacture
a coordinated control system to suit the specified plant environment.
This system will control, monitor and alarm the Megawatt (Mw)
loading and loading rates, steam flows as well as general boiler/turbine/generator
system status. CRT based graphical operator interfaces keep the
operator constantly informed of the operating status of the Boiler/Turbine
Steam turbine runup systems involve the monitoring
of critical turbine data in order to control starting, acceleration
rates, holds, differential expansion and to monitor vibration
levels. A steam turbine can respond very quickly to system disturbances,
therefore it is imperative that the response rate of the associated
control system be sufficiently quick.
FPS has engineered, designed and supplied
several systems for controlling steam turbine runup, complete
with the monitoring and display of critical turbine data using
a CRT-based graphical operator interface. The alarming and logging
of turbine data are a standard component of this package.
Usually the development costs for these systems
are extremely high if the project is to be properly designed and
tested. FPSs experience with other systems has allowed us
to develop a general design strategy, leading to a very economical
system capable of controlling steam turbine runup and turbine
control. "Off the shelf" components such as the Allen
Bradley family of products or MOORE APACS family of products have
been selected for this application.
Turbine Water Ingress Prevention
Primarily Turbine Water Ingress Prevention
Systems are concerned with the prevention of water damage to steam
turbines used for fossil fuel fired electric power generation.
Any connection to a turbine is a potential source of water damage
either by induction from external equipment or by the accumulation
of condensed steam.
There is no piece of equipment in most plants
more complex than the steam turbine/generator system, which is
supported by many subsystems. Safe and effective operation of
a turbine/generator requires that the designers of Water Ingress
Prevention systems have good understanding of the turbine/generator
unit and its subsystems. Steam turbine damage due to water induction
is relatively common in the electric generation and process industries
as the majority of water ingress damage to steam turbines occurs
during unit start up and shut down.
FPS has engineered, designed, manufactured
and commissioned a number of these systems satisfying ASME Standard
Number TDP-1 and TWDPS-1, "Recommended Practices for the
Prevention of Water Damage of Steam Turbines Used for Electric
Power Generation" as well as other related National and International
standards. Fossils Aquarian Water Detection products form
one of the primary data sources.
A team of responsible engineers and designers
will review and develop an understanding of the design features
and operation of your steam generator and the associated turbine.
They will then engineer, design and manufacture a system to suit
the layout and operation of your plant that will protect the turbine
against water induction. Operating precautions, as well as codes
of practice and standards for these systems, are well understood
by the engineers assigned by FPS to the project.
A Windows-based graphical display will be part of the supplied
system in order to provide the operator with a graphical overview
of the system, clearly identifying the location of all the Aquarian
detection probes. Critical and warning alarms indicating the presence
of water and /or associated valve positions are integrated as
part of the operator interface.