LM2500 Mobile (TM) 50/60 Hz* 21 MW / 26 MW with water injection** SCOPE OF SUPPLY & SYSTEM CONFIGURATION (Mobile)

Time to to delivery after contracting 1 unit in 90 days (2 units 120 days / 3+4 in 150 days)

Warranty 1 year / 8000 hrs on whole

 

* Right now 50 Hz, Dual Fuel (Gas – Liquid: DFI, DF2, JP4, Naphtha, or Kerosene), with Flogger * * Units are set up ready for water injection, clients need 300 gals an hour of dematerialized water

The following equipment and services are included in the scope of supply:

Main Trailer This is a modular system that consists of a main trailer, air filter trailer, exhaust silencer trailer, and an auxiliary trailer. The Main Trailer contains a General Electric turbine engine (Model LM2500), switchgear, and an air-cooled generator connected through an engine-generator coupling. The turbine engine is equipped to operate on natural gas or liquid fuel (dual fuel unit).

Auxillary Equipment Trailers Supplied with the Trailer mounted LM2500 set are three support trailers that contain the air filtration and exhaust equipment, fuel systems, lubricating systems, fire protection

equipment, water wash, water injection, and fogging systems. All interconnections between individual trailers are included. These trailers are configured as follows: Air

Inlet Filter Trailer Contains the combustion and ventilation air filtration equipment. Includes high-efficiency bag filters, ventilation fans and intake silencers. Inlet ducting will have expansion capability to allow for additional silencing.

Exhaust Silencer Trailer Contains the combustion exhaust silencer equipment, including an expansion joint, transition, silencer elbow, and stack with standard emission measurement ports. Exhaust ducting will have expansion capability for additional silencing and have a flange designed for a deflector assembly (deflector not included in scope).

Auxiliary Trailer Contains the control house, lube oil cooler, hydraulic system, water wash system, water injection pumps, natural gas filter, and fire protection system.

Support System Equipment The packaging of the Trailer mounted LM2500 set includes a turbine generator control panel (TCP), digital generator protection relay system, 400-V motor control center (MCC), and 24-and 125-VDC battery systems, including battery racks and chargers. This equipment is contained in the control house, located on the auxiliary trailer.

Turbine-Generator Control System The turbine-generator control and monitoring systems regulate the lubrication, fuel supply, ventilation and cooling, fire safety, and maintenance functions. Fuel supply is regulated by a computerized fuel control and sequencer system. The control system monitors all operating systems and initiates alarms and shutdowns when hazardous conditions occur. Manual emergency shutdowns can be initiated with emergency stop buttons located on the exterior of the main and auxiliary trailers, as well as at the TCP. The control system is expandable to accept additional inputs, alarms, etc.

ENGINE/GENERATOR MOUNTING

Main Trailer The turbine engine is mounted to a welded support platform that in turn, is independently mounted to the forward half of the Main Trailer. Dry coupled to the engine, the generator is mounted directly to the rear half of the trailer. This arrangement enables engine/generator shaft alignment to be adjusted at the engine platform, while the generator remains fixed. A weatherproof, sound-deadening enclosure houses the engine, which can be removed for engine removal. The air-cooled generator is enclosed, and its ventilation air filter box is mounted on top of the housing. The LM2500 gas turbine engine is the prime mover in the trailer mounted LM2500 generator set. This engine is a two-shaft design with the gas generator separate from the power turbine stage. This decoupled design allows the power turbine to operate at a continuous speed

of 3,600 or 3,000 rpm, regardless of the gas generator speed. The torque developed in the aerodynamically coupled power turbine is directly transferred to the rotor of the alternating current (AC) generator through a flexible diaphragm coupling. The AC generator operates at a synchronous speed of 3,600 or 3,000 rpm, eliminating the need for a speed-reducing gearbox during simple-cycle operation.

AC GENERATOR The Trailer mounted LM2500 set features a generator, which is a two bearing machine equipped with a brushless rotating exciter and a permanent magnet generator (PMG) on the non-drive end.

Rating The AC generator operates at a synchronous speed of 3,000 rpm and continuously supplies an output voltage of 11.5 kV for this project, at a frequency of 50Hz and an 85% power factor (PF). Includes a generator breaker with 40,000 amp interrupting capacity. The generator is designed for outdoor use.

COUPLING The power turbine flange of the LM2500 turbine engine is directly coupled to the generator rotor shaft with a disk-type, dry-diaphragm coupling. The coupling consists of a hollow center shaft, which connects to the turbine shaft hub and the generator rotor shaft hub by means of diaphragm packs made from thin metal disks that have been stacked and riveted to a guard plate. The entire assembly has been drilled around the outer diameter to accept the coupling hub bolts. The inner diameter of the diaphragm pack has been clamped to the coupling center section by backing rings. The diaphragm packs flex slightly to absorb vibration and some of the stresses associated with a varying load. The coupling hubs and center section have been dynamically balanced at the factory to eliminate vibration and then match marked to ensure proper assembly.

TURBINE LUBE OIL SYSTEM The LM2500 turbine is lubricated by a 150-gallon internal pump and lubrication system. We provide an external lube oil system to filter, cool, and de-aerate the lube oil discharged from the internal system. The external system is fed by a scavenge pump, which is driven by the turbine accessory gearbox whenever the turbine gas generator is rotating. Instruments and Controls Lube oil pressures and temperatures at critical points are displayed on externally mounted instruments that permit both local and remote observations. Gauges and pressure switches in the system have been installed with a needle valve in the instrument sensing line to permit replacement and calibration without disturbing the lube oil flow. The system piping has been provided with manually operated ball valves to isolate components for repairs and maintenance.

GENERATOR LUBE OIL SYSTEM The lube oil system provides pressurized lubrication to the generator bearings. The major components of the lubrication system are as follows:

 

•                  Lube oil storage reservoir, 150 gallon capacity

•                  Generator-driven lube oil pump

•                  DC motor-driven auxiliary lube oil pump

•                  Generator lube oil heat exchanger

•                  Lube oil filter assembly

 

Generator-Driven Lube Oil Pump The generator rotor shaft directly drives this pump, mounted to the exciter end of the generator housing, and supplies lube oil to the bearings at the normal operational shaft speed (3,600 or 3,000 rpm). Because its efficiency decreases at lower shaft speeds, an auxiliary pump to ensure adequate lubricating oil flow during startups and shutdowns must supplement the pump. Auxiliary Lube Oil Pump The auxiliary pump supplies oil to the generator bearings for the first 5 minutes of startup, during shutdowns, and in case of generator-driven pump failure. This pump is driven by a 2-hp, 125VDC, motor, and is controlled by the turbine sequencer in the TCP. The sequencer monitors the lube oil system pressure and generator shaft speed, and activates the auxiliary pump during generator startups, shutdowns, and any other time that the lube oil pressure drops to 12 psig. An alarm sounds should the auxiliary pump activate with the generator turning at normal operating speed. Instruments and Controls Each gauge and pressure switch has been installed with a needle valve in the sensing line to permit replacement and calibration without disrupting oil flow. Manually operated ball valves have been provided to isolate components for repairs and maintenance.

FUEL INJECTION SYSTEM System Configuration and System Components The trailer mounted LM2500 generator set operates on gaseous or liquid fuel. The supply systems include engine components and off-engine components and piping. In the gaseous fuels system, ball valves have been installed to isolate the pressure control and pressure monitoring components for repair and replacement. The turbine generator electronic-control system controls the valves that regulate the supply of gaseous fuel. Under control of the fuel sequencer software and hardware, electrically actuated flow control valves meter gas fuel into the combustor via the gas manifold. The gas fuel system controls customer supplied gas fuel for application to the turbine combustor via the primary gas manifold connected to the fuel nozzles. Gas fuel must meet fuel quality requirements. This system receives customer provided gaseous fuel at the maximum rate of 250 MMBtu per hour, at pressures between 365 and 405 psig, and temperatures not exceeding 250 F. The gas is pre-filtered to 3 micron. The fuel-metering valve is installed with an electrically controlled, proportional actuator that is controlled by signals from the TCP. The fuel metering valve is a rotary sleeve-and-shoe throttling valve. The metering port area is determined by input shaft positioning from the actuator. The valve is spring-loaded to the minimum fuel direction, so that loss of signal and loss of power situations will cause a fuel shutdown. The valve is capable of metering 50-40,000 pph of natural gas. The fuel-metering valve actuator is an electrically controlled device. In the actuator, a torque motor servo valve is energized by the electric control (from the TCP) to generate a pressure differential applied to operate the spool valve. Supply pressure is regulated by the spool valve to move a double acting servo piston and provide terminal shaft output. Internal mechanical feedback is standard;the system also uses the electrical position feedback transducer for fail-safe operation.

WATER SYSTEMS Turbine Water Wash System Optimal performance is achieved by periodically cleaning compressor stages of the gas turbine. The water wash system provides for washing the turbines when the turbine has been shut down for maintenance (off-line water washing). Off-line water washing may not be initiated until engine surface temperature is <200 F. Exhaust Collector Drain Significant amounts of flammable liquids and water wash solution may accumulate in the turbine exhaust collector. The exhaust collector drain system eliminates these accumulations to ensure safe starts. A flexible drain line routes accumulations from the collector to the fuel drain line through pneumatically operated drain valve.

HYDRAULIC START SYSTEM The hydraulic start system turns the engine and is capable of starting it for fuel purging, water washing, and conducting maintenance. The hydraulic start unit is located on the auxiliary trailer and consists of a reservoir, filters, heat exchanger, charge pump and motor, cooler pump and motor, and electrically operated valve providing pressurized hydraulic fluid to the variable-displacement pump, and a hydraulic starter motor mounted on the starter drive pad of the turbine auxiliary gearbox. This hydraulic starter motor turns the engine. Two operating speeds are provided: a low speed for water washing and maintenance, and a high speed for turbine starting and fuel purging. Engine speed can be controlled from the TCP. Local gauges allow for monitoring of the hydraulic charge pump and main system pressures, and fluid levels. Hydraulic fluid is stored in a 40-gallon stainless steel tank equipped with sight level gauge and thermometer; low-temperature switch; fluid level switch; thermostatically controlled immersion heaters; and a 200-mesh, hydraulic pump suction strainer with an integrated bypass valve. Hydraulic Start Charge Pump .The charge pump replenishes lost fluids in the hydraulic pump case and in the main pump, closed-loop hydraulic system.

COMBUSTION AND VENTILATION AIR SYSTEM The combustion and ventilation air system of the Trailer mounted LM2500 generator set supplies filtered combustion air for turbine engine operation and filtered ventilation air for the turbine enclosure. The trailer-mounted air filter module supplies combustion air to the gas turbine and ventilation air to the turbine enclosure. The air filter trailer is equipped with moisture eliminators, pre-filter pads, bag filters, and ventilation fans. The ventilation fans force filtered air into the turbine compartment for ventilation and cooling purposes. The gas turbine engine draws filtered air from the air filter trailer for turbine combustion while ventilation fans in the air filter trailer force ventilation air into the turbine enclosure. The airflow is provided as two discrete streams: one stream provides a 120,000-scfm airflow for the combustion in the turbine engine; the other provides a 30,000-scfm airflow for turbine compartment ventilation. Fire Control System, a CO2 actuated damper in the ventilation exhaust silencer assembly helps to extinguish fires and prevent gas explosions. Should a fire occur, the damper automatically seals the turbine enclosure, terminating the oxygen flow required for combustion. The fire suppression and gas detection system for the trailer mounted LM2500 generator set monitors the turbine engine enclosure for the presence of fire and accumulation of combustible gas. Carbon dioxide (CO2) is used as the fire-extinguishing agent for the Main Trailer. The fire suppression and gas detection system consists of a programmable microprocessor controlled panel that receives inputs from thermal spot detectors, combustible gas detectors, and manual release stations.

VIBRATION MONITORING SYSTEM A vibration monitoring system shall be installed in cubicle 2 of the TCP to notify the operator of excessive vibration in the turbine engine and generator. The system comprises six vibration-monitoring elements and an instrument rack with built-in power supply relays, and four vibration-monitoring instruments.

GENERATOR EXCITATION AND REGULATION SYSTEM This system provides the power required to raise the generator output voltage to rated level during startups and to maintain this output during fluctuating load conditions in the unit. The generator excitation system contains the following components:

•                  Brushless Rotary Exciter – mounted on the generator

•                  Rotating Rectifier Assembly – mounted on the generator rotor

•                  Permanent Magnet Generator (PMG) – mounted on the generator

•                  Modular Automatic Voltage Regulator (MAVR)

•                  Excitation Mode Switch Motor Control Center (MCC) -The MCC distributes 400-VAC power to motors, heaters, and lighting circuits. The MCC is designed to allow automatic or manual control of high power circuits using low-voltage control circuits. During manual control, power is switched to the load immediately. When the circuit is under automatic control, TCP­control circuits will switch power to, or remove power from, the load when sensors detect the need.

 

ELECTRONIC CONTROL SYSTEM The Trailer mounted LM2500 generator set is operated through use of an electronic­control system. This system comprises computerized-control subsystems installed in the TCP. The microprocessors and digital logic circuitry in these subsystems provide the speed and autonomy of operation required for sage, efficient operational control. Two major system components are as follows: 1 – Sequencer The sequencer controls the order and timing of critical events in the operation of the trailer mounted LM2500 generator set. It issues operating commands to the control subsystems in response to data received from the sensors and detectors in the equipment and trailer mounted LM2500 subsystems. 2 – Fuel Supply Manager The fuel manager controls the operation of the turbine fuel systems. The purpose of the fuel manager is to maintain a constant generator output frequency. The fuel manager achieves this goal by regulating fuel flow to hold generator speed at a constant 3,000 rpm under all load conditions, including no-load, full-load, and load-fluctuating operation. The fuel manager also:

 

•                  Manages the matching of generator output frequency to the frequency of utility power for automatic synchronization and paralleling;

•                  Controls the acceleration and deceleration of the gas turbine engine by varying the fuel flow; and

•                  Initiates, regulates, and terminates fuel flows into the gas turbine engine.

 

BATTERY AND BATTERY CHARGER SYSTEMS Separate battery and battery charger systems furnish DC power for Trailer mounted LM2500 genset operation. Two separate 24-VDC systems provide backup power for the turbine control system and fires suppression and gas detection system, respectively. A 125-VDC system provides backup power for the DC lube oil pumps. Batteries for the 24-VDC system are stored on battery racks in the control house of the auxiliary trailer. The batteries are Ni-Cad and the control house is adequately ventilated.

TESTING The generator is tested at the factory. Upon completion of installation and start up, the unit shall be tested to demonstrate compliance with the performance, emissions, and acoustic guarantees listed in this proposal. We shall prepare performance test procedures and submit them to the Customer for review and approval with the final design drawings. The performance test procedures shall include correction curves and test calculation details. We will be responsible for providing technical assistance. Customer shall provide fuel, operations personnel, field personnel, testing equipment, and any consumables required for the performance test. Customer shall be responsible for the cost of all emissions testing.

MANUALS Drawings, Data and Manuals The package is supplied with a customer drawing package that includes general arrangement drawings, flow and instrument diagrams, electrical one-line drawings and interconnection plan. Additional electrical schematic diagrams and logic drawings are provided for record. Operations & Maintenance manuals are provided, printed in the English language. The manuals cover operating concepts for power generating equipment, guides to troubleshooting, basic information on components, and equipment within the turbine generator set. Seven (7) hard copies and one electronic (.pdf) copy shall be provided of the Operations & Maintenance Manual. Training manuals and light­off procedures will be provided well in advance of generator set delivery to ensure adequate preparation for system checkout and light-off. All data collected during component testing, system flushes, controls testing and final performance testing report will be provided to the customer. The customer is welcome to witness any or all testing and development procedures during the construction of the units. A full drawing set is included in each Operations & Maintenance Manual and an electronic copy in Autocad format.

TRAINING Standard Training includes classroom training for up to 10 customer’s operators and supervisors. Experienced instructors, using specially developed training materials, provide a firm groundwork of the basic theory, plus advanced concepts with classroom training. Training includes Gas Turbine Familiarization plus System Design & Operations at the packaging facility. Customer provides living and travel expenses for their employees. Training at other locations is possible for a small fee. Customer provides classroom, projector, etc.

EXCLUSIONS Listed below are the limits/exclusions to the standard Scope of Supply. All piping, wiring, cables, ducts, etc. connecting to these points will be furnished by customer (others) unless modified by specification agreement. All piping, including Fuel Gas, Fuel Oil, Steam, De-mineralized water Inlet Air to filter Turbine Package Ventilation / Cooling Air Customer installed instrument wiring in Turbine Control Panel High Voltage Connections Generator Ground Connection Flanged or threaded connection on base plate at auxiliary trailer Atmosphere – non-standard duct by others Terminal Box on Baseplate Bus Bar in Line side Cubicle Neutral Cubicle Battery Terminals to Baseplates (if supplied loose) Material and Labor Furnished by Others Civil engineering design of any kind Building & civil works Site facilities All inlet, exhaust, and ventilation ducting other than included in the general scope of supply Drains and/or vent piping from the gas turbine package to a remote point Fuel storage, treatment and forwarding system Site grounding Lighting protection Power system study Sensing and metering voltage transformers Machine power transformers, and associated protection Grid failure detection equipment Service Agreement -Per Customer Requirement Off-trailer cabling, and design of off-trailer cable routing Customer witness testing Balance of plant and energy optimization controls Anchor bolts, embedment, and grouting Distributed plant control Customers installed remote control Field consultants -Per Customer Requirement High voltage transformers(s), cables, and associated equipment Interconnecting piping, conduit, and wiring between equipment modules Plant utilities, including compressed air supply and off-trailer piping Battery containment Lube oil measurement other than that defined in the scope of supply Additional lube oil breather ducting other than that defined in the scope of supply Fuel transfer pump Fuel for gas turbine Off-trailer fuel block and vent valves Fuel supply pipe work beyond the scope of supply Generator controls other than that defined in the scope of supply Load sharing control Balance of plant control Site labor (beyond the scope of supply) Ladders, stairs, and platforms (beyond scope of supply) Water supply and treatment by others All Permits and permitting as required No taxes or insurance No legal fees included Finance options.

MOBILE POWER INTERFACE & SPECS

•                  Control House / MCC / Breaker requires 480/450 V, 60/50 Hz, 190 kW of auxiliary power Generator output is 13.8 kV @ 60Hz, 11.5 kV @ 50 Hz, switchgear is located on Auxiliary Trailer

•                  Each Trailer has grounding pads

•                  Gaseous Fuel Supply -395 psig @ 12,000 pph

•                  Liquid Fuel Supply -30 psig @ 40 gpm

•                  Water Injection Supply -15 psig @ 28 gprn (maximum) Inlet Fogging Supply -15 psig @ 60 gpm (maximum) Inlet Air-150,000 CFM

•                  Exhaust Flow -490,000 to 550,000 lbs/hr @ 980 deg. F -dry operations

•                  Trailer Mounted LM2500 may be installed on crushed gravel with steel support plates or 4" concrete foundation with steel support plates. Site grade must be no greater than 6" per 100'. Emissions -42 ppm NOx (liquid fuel with water injection), 25 ppm NOx (gaseous fuel with water injection)

•                  Noise -85dba @ 3ft

 

OPTIONS

depends on the turbines / engines he has at the time . Right now 50hz, dual fuel, with flogger for example

Option 1: Ocean & Inland Freight to Job Site.

Can provide shipment of the entire package directly to the site for an additional fee.

Option 2: Fogging System

Fogging boosts engine performance and efficiency using a spray inter-cooling design that significantly increases mass flow by cooling the air during the compression process. The system is based on an atomized water spray injected through spray nozzles placed at two locations, one between the high pressure and low pressure compressors, and the second at the inlet bell mouth. Water is atomized using high pressure air. The water flow rate is metered, using the appropriate engine control schedules and, at the inlet bell mouth and inter-stage portions, on fogging alternate operation based on turbine inlet temperature

Option 3: Evaporative Cooling

For Applications when high dry bulb temperatures are common at low relative humidity, evaporative cooling can be utilized to lower entering DB temperature, thus increasing power output of the package.

Option 4: Inlet Air Anti-Ice

An Anti-Ice System is recommended to allow safe operation during icing/winter conditions. This system includes valves and ducting to direct gas turbine enclosure ventilation exhaust air to the gas turbine inlet air filter.

Option 5: High Performance Heating Chilling

Combines the Anti-Ice System with inlet chilling for winter and summer operations. Lowering combustion air inlet temperature can increase the kWe output of the generator set.

Option 6: Pulse Filters

Filters pulsed with compressed air for sites with high particulate in the outside air (dust, etc.).

Option 7: HRSG & Steam Production w/SCR

Heat Recovery Steam Generator with Selective Catalytic Reduction to boost power and reduce NOx emissions to less than 25ppmvd.

Option 8 : Exhaust Silencer & Stack Assembly

Modified exhaust and larger stack assembly built to customer requirements.

Option 9a: SCR System with Ammonia Grid

Selective Catalytic Reduction for reduced NOX emissions.

Option 9b: CO Grid

Option 10: Black Start System

Includes a 600 kWe diesel generator set and battery cranking system for black starts. The diesel generator provides 480 VAC power for ventilation fans, accessories and starter motor. A larger diesel generator set may be required if a natural gas fuel compressor or other special auxiliaries must be operated during the starting sequence. The black start diesel generator set is furnished in accordance with Manufacturer Diesel Generator Set Specifications.

Option 11: Water Washing

Special option with inlet fogging.

Option 12: Off-base Fin-Fan Coolers

This replaces the standard plate and frame coolers for the lube oil system. A simplex core fin-fan coolers, complete with changeover valve mounted on a separate base plate is supplied. Cooler is dual fan and installed on a separate foundation:

This replaces the standard plate and frame coolers for the lube oil system.

Option 13: Shell & Tube Oil Coolers. This replaces the standard plate and frame coolers for the lube oil system.

Option 14: Natural Gas Fuel System

Standard fuel system.

Option 15: Liquid Fuel System

The gaseous fuel system is replaced by a liquid fuel system. Typical liquid fuels Include DFI, DF2, JP4, Naptha, or Kerosene. Customer must supply liquid fuel to the connection at the fuel boost module at 20-50 psig (138-345 kPag) and at least 200F (11 OC) above the wax point temperature. Customer supplied fuel must be clean, filtered and meet the fuel specifications. Customer must supply interconnection piping from boost module to main base plate.

Option 16: Dual Fuel System

When specified, the package is delivered with two independent fuel systems. This could include two gaseous fuels, two liquid fuels or one gaseous and one liquid fuel. Changeover may be initiated manually at the unit control panel, or automatically, if the operating fuel supply pressure should gradually decrease.

Option 17: Steam Injection System

A steam injection system is required in conjunction with the HRSG option to boost power and decrease NOx emissions.

Option 18: Water Injection System

For applications with NOx emissions limitations, water injection may be required. A water injection system consists of inlet strainer, valves, piping and controls. Customer must provide a supply up to 55 gpm of purified water on gas fuel and up to 78 gpm of purified water on liquid fuel per water specifications to the water injection skid at 5 to 50 psig (34.5 -345 kPag). The minimum customer supplied pressure and temperature determined by the water injection rate required and the type of fuel nozzle utilized.

Option 19: Smart Extra Computer & Printer

Manufacturer can furnish a remote workstation, as part of the control system. The module consists of high performance desktop PC system equipped with a serial port for communication with the control system, animated graphical displays of the turbine, generator, and auxiliary system analog and digital parameters, historic logging and trending system that can store/display up to 30 days of historical data, periodic reports, and capability to start, stop, and control the gas turbine generator system.