4000kW Biogas Gas Engine Generator
Accurate voltage regulating
Good dynamic performance
Less voltage waveform distortion
High efficiency
Compact structure
Easy to maintain
Low speed, good reliability
Long life operation and cost-effective
4000kW natural gas generating sets (4000GF70-T) are powered by model 16V26/32T gas engine produced by Jinan Jichai company.
It has the features of accurate voltage regulating, good dynamic performance, less voltage waveform distortion, high efficiency, compact structure, easy to maintain, low speed, good reliability, long life operation and cost-effective.
Main Specification of 4000GF70-T Gas generator
Model of genset | 4000GF70-T |
Model of engine | H16V260ZLT-2 |
Model of alternator | 1FC6 Series |
Coupling method | |
Rated speed(r/min) | 1000 |
Rated power(kW/KVA) | 4000/5000 |
Rated voltage(V) | 10500 |
Gas consumption | ≤0.23 (Nm3/kwh) @3.5MW output |
Rated frequency(Hz) | 50 |
Rated power factor | 0.8 lagging |
Voltage regulation | Automatic |
Supply connecting | 3 phase 3wire |
Governor | EGS-06 (WOODWARD) |
Control model | Remote electric control, Hand control |
Starting method | Pneumatic starting motor |
Cooling method | Water cooling system |
Electrical efficiency | 43% |
Heat Consumption | ≤ 9000kJ/kWh |
Net weight(kg) | 70000 |
| Overall dimension | 9400×2900×3700 (mm) |
Requirements for fuel gas
In order to ensure its reliable and stable operation of the generator set, the requirements for the natural gas quality is as follows:
——Natural gas should be dehydrated without any water, crude oil & clean oil
——Natural gas pressure 10Bar;
——Natural gas temperature -20~40℃;
——Total sulfur content less than 200mg/m3.
Note: Gas volume is under standard condition with 100kPa atmosphere, 20℃ambient temperature,30% relative moisture.
Requirements for cooling water
Soften water is required by high temp and low temp engine circulation system. Cooling water should be lightly alkaline clean water without any corrosive compound, such as chloride,sulfate or acid etc.
Requirements for lubricant
Engine is equipped with complete lubrication system, with oil consumption≤0.3g/kW·h. Lubricant model: Mobil Pegasus 705 or 15W40CD.
Requirements for environment
gas generator set can run steadily, reliably, continuously under following condition: ambient temperature between -40℃~+40℃,relative moisture<90%,sea level elevation≤2000m. The generator can output rated power under standard environmental conditions:atmosphere pressure 100kPa, ambient temperature25℃, air relative moisture 30%.
Speed governing control system
Adopting American WOODWARD EGS control system, after special control for air and gas ratio (Gas and air compound density) with Tecjet Valve through analysis and calculation for gas and air inlet parameters and operation parameters of engine, it can reach high air and gas ratio, realize rarefied combustion, solve flash back and blasting phenomenon existing in common outer-compound engine and raise economical characteristics of engine.
EGS control system is computer intelligent and high accuracy gas control system. According to analysis and calculation, EGS gives action indication to gas control Tecjet valve and reach precision control air and gas ratio.
Adoption of single-point injection and air and gas closed-cycle technology, Through the WOODWARD-ProAct actuator, controls the flux of mixed gas; make engine operation stable and reliable.
Ignition system
Ignition system includes digital ignition module, high pressure coil, high pressure wire and spark plug, and all of them belong to famous imported products.
Ignition energy is divided in three levels which can be adjusted based on gas composition to realize optimum ignition state. Ignition system owns automatic detection and alarm function for self-trouble. Once spark plug cannot ignite or occurs to short circuit or loose connection, system detects in time and alarms at once in order to maintain the generator set.
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Gas Input and exhaust system
Applicable to low-pressure input.Generator adopts external mix before turbocharger technology. Gas pressure can only be more than 7Kpa to ensure generator set can be used widely.
Stable and efficient gas input system to ensure power generation be more effective. Gas input system adopts high-efficient air filter, high-flow turbocharger, round-pipe intercooler. The heat emission efficiency of round-pipe intercooler radiator is 20% higher than ordinary intercooler, which can satisfy cooling requirements of air flow.
Effective exhaust system protection to avoid heat radiation and hidden danger. Due to high exhaust temperature, special heat insulation layer is applied on exhaust main pipe and turbocharger surface. Expansion piece is installed on exhaust outlet to reduce fault rate and prevent releasing heat out of generator house.
Lubrication system
The lubricating method is pressure and splash lubrication, the pressure in the main oil pipe is 500 to 800 KPa. The oil pump is outer type which is convenient to maintenance and the manual oil pump and electric pre-oiling pump is also equipped. Oil cooler and oil pressure low alarm and shutdown equipment is installed to protect the operation of genset.
Alternator system
Our generator use JFG series high voltage alternator,the alternator conform to applicable IEC 60034-1 requirements, GB755 standards.
JFG series generator has degree of protection IP23 and adopts IMB20 installation type.
The generator comprises the main machine(revolving-field machine with cylindrical rotor and damper windings),exciter(revolving armature machine)and excitation equipment. The excitation system mainly adopts currently the world’s most advanced DECS100 or UNITROL 1000 digital automatic voltage regulator which is produced by BASLER company or Switzerland ABB company, By using the permanent-magnet auxiliary exciter system, the main generator, the permanent-magnet auxiliary exciter and digital automatic voltage regulator perfectly matched that constitutes the high quality and excellent-performance generator.
Main Performance Index | |
Stable voltage regulation ratio | Single unit:±1% synchronized running:±2.5% |
Instantaneous voltage regulation ratio | -15%~+20% UN |
Overload | Run 1hour at 110% rated load(6hrs as cycle time) |
Overcurrent multiples | 1.5IN,Time 2 minutes |
Short-circuit current maintaining capacity | Excitation system can supply continuous current of three-times rated current, lasting 5s, alternator must offload.
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Cooling system
1000kW Gas generator set adopts closed circulation flat bed radiator. This radiator owns low consumption and high efficiency characteristics. Shown as the above picture, this flat bed radiator is equipped with 10 fans and independent motors and consists of control system, motor driving device, electric fan, radiator and base. This control system owns air blower automatic start and stop function.
Control panel
The Control panel is floor type. Main breaker adopts auto air circuit breaker, with over-current protection and reverse-power protection. Control panel is equipped with controllers, kinds of display instruments, adjusting buttons, protection indication lamps, emergency shutdown buttons etc, to control and monitor working condition of the generator set.
It is equipped with automatic synchronization IG-NT or IC-NT (according to customers demand) with the function of automatic synchronizing and load sharing.
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Email: anna_jichai@126.com
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