Microturbines provides on-site electrical power for primary or standby applications. The system consists of a turbine engine, solid-state power electronics, fuel system, and indoor/outdoor rated enclosure. It may generate power in parallel with an electrical utility (Grid Connect mode), or isolated from the utility (Stand Alone mode).
1. Design MTG’s (Microturbine Generator) Blowers and Dampers
Operation Sequences using PLC Programming
Bachelor of Technology Electrical System Maintenance with Honors
2. Microturbines provides on-site electrical power for primary or
standby applications. The system consists of a turbine engine,
solid-state power electronics, fuel system, and indoor/outdoor
rated enclosure. It may generate power in parallel with an
electrical utility (Grid Connect mode), or isolated from the utility
(Stand Alone mode).
Introduction
3. A Microturbine is a miniature, self-contained power plant
generating heat and electricity in the range of 30 kW to 1 MW as
individual systems, or up to 5 MW as multipacks.
Capstone's Microturbines have a single moving part, no gearboxes,
pumps, or other subsystems, and use no oil, lubricants, or
coolants. They can deliver clean, high-quality power from a wide
variety of fuels with near-zero emissions.
4.
5. • Major turbine engine components include a compressor, a
recuperator (exhaust gas heat exchanger), a combustor, a
turbine, and a generator. The turbine engine is air cooled and
supported on air-lubricated foil bearings (air bearings). The
compressor impeller, turbine rotor, and generator rotor are
mounted on a single shaft. The power electronics are solid-state,
double conversion type, producing three-phase alternating
current output power from the high-frequency alternating
current engine output.
6. • Stand Alone operation provides power to remote facilities such
as construction sites, offshore oil platforms, or other locations
where the electric utility grid is not available. It requires the
battery-equipped Dual Mode model. Stand Alone operation
consists of commanding the system on or off, and then enabling
or disabling the power output.
Stand Alone Mode
7. Positive pressure air systems (NFPA 496, Sec. 5-4.1)
You must maintain positive pressure of at least 0.1 in. of water
column (25 Pascals) in the control room with all openings closed.
closed. Sensitive pressure switches and other devices are available to
available to measure these low values. The Code permits this
minimum air pressure to drop to a lower level when doors and other
other apertures remain open - providing you maintain a minimum
minimum air velocity of 60 ft/min. (0.3 m/sec) through the openings.
openings.
Purge & Pressurized
8. Proper air inlet and exhaust ventilation are crucial to
microturbine performance and longevity. Microturbines require
substantial air for both engine combustion and enclosure
cooling.
There are two separate air inlets in the C200s microturbine, one
for engine combustion air and one for cooling internal modules-
electronics, fuel skids, etc. The exhaust also consists of the
combustion air exhaust and the enclosure/electronics exhaust.
(Capstone, User’s Manual)
Problem Statement
10. The usage of two blower units will lead to high electrical energy
consumption.
The blower unit's lifespan will be short if no other method is
used.
11. To develop a program of PLC using Studio 5000 for the
MTG’s alternate blowers and dampers operation.
To avoid the MTG from tripping due to pressure loss to
meet offshore requirements.
Objective
