CN108590857B - Heavy gas turbine with variable speed synchronous motor driving compressor - Google Patents
Heavy gas turbine with variable speed synchronous motor driving compressor Download PDFInfo
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- CN108590857B CN108590857B CN201810341130.XA CN201810341130A CN108590857B CN 108590857 B CN108590857 B CN 108590857B CN 201810341130 A CN201810341130 A CN 201810341130A CN 108590857 B CN108590857 B CN 108590857B
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 66
- 230000005284 excitation Effects 0.000 claims abstract description 30
- 230000003068 static effect Effects 0.000 claims abstract description 26
- 238000002485 combustion reaction Methods 0.000 claims abstract description 19
- 230000006835 compression Effects 0.000 claims abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 125
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 9
- 239000003546 flue gas Substances 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 238000005461 lubrication Methods 0.000 claims description 7
- 239000002918 waste heat Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
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- 238000004134 energy conservation Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
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- 239000000047 product Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Eletrric Generators (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a heavy gas turbine with a variable speed synchronous motor driving a gas compressor, and relates to a heavy gas turbine which has large capacity in high, medium and low load intervals, high efficiency, energy conservation, low carbon emission, good controllability, flexible operation, quick start and stop and strong primary frequency modulation capability and is used in a power station; the invention comprises a gas compressor, a variable speed synchronous motor, a static excitation device, a variable frequency power supply, a combustion chamber, a gas turbine and a generator; the turbine type air compressor is driven by a variable speed synchronous motor, and is regulated by changing the rotating speed and the compression ratio in the whole process from starting to carrying out low load, intermediate load and high load, and the turbine type air compressor runs in the whole process under the high-efficiency working condition; the shaft power generated by the gas turbine is converted entirely into electrical energy via a corresponding generator.
Description
The technical field is as follows:
the invention discloses a heavy gas turbine with a variable speed synchronous motor driving a gas compressor, and relates to a heavy gas turbine which has large capacity in high, medium and low load intervals, high efficiency, energy conservation, low carbon emission, good controllability, flexible operation, quick start and stop and strong primary frequency modulation capability and is used in a power station.
(II) background technology:
since the 90 s in the 20 th century, the mature development of the gas-steam combined cycle and the overall thermal efficiency of the combined cycle unit are greatly improved, and the heavy-duty gas turbine for the power station becomes an important component of power generation equipment in a power grid.
According to the combustion temperature and the unit power during working, the heavy-duty gas turbine used in the power station in the prior art is divided into eight grades of A-B-C-D-E-F-G-H. The higher the inlet temperature of the gas turbine, the higher the power of the unit, the higher the thermal efficiency, and generally the higher the exhaust temperature of the gas turbine.
The most advanced prior art heavy duty gas turbines for power plants that have been put into commercial operation are class H gas turbines; in the world, H-class gas turbines designed and produced by different manufacturers have common technical characteristics:
a. the turbine type compressor and the gas turbine are coaxial and have the same rotating speed, and after the generator is connected to the grid, the rotating speed of the turbine type compressor is not adjustable;
b. the number of stages of the turbine type compressor is distributed from 13 stages to 17 stages;
c. the compression ratio is distributed in the range of 19.2 to 23;
d. the air flow adjusting range is approximately 50% -100% by configuring 1-stage adjustable inlet guide vanes and 3-stage adjustable stationary vanes.
The prior art gas turbine usually forms a gas-steam combined cycle system together with a waste heat boiler and a steam turbine; the steam turbine is reheated or not, has no backheating steam extraction port and is provided with a middle-pressure steam supplement inlet and a low-pressure steam supplement inlet; the steam turbine is provided with necessary auxiliary machines, such as a condensate pump, a circulating water pump, a condenser, a vacuum pump, a cooling tower, a lubricating oil system, a control oil system, a bypass system and the like; the waste heat boiler is usually designed into double pressure or three pressure, superheated steam with different pressures is respectively provided, and each pressure is provided with an own economizer, an evaporator, a steam drum and a superheater; the power generated by the generator driven by the gas turbine generally occupies about 2/3 of the gas-steam combined cycle unit; the power generated by the steam turbine driven generator accounts for approximately 1/3 of the combined gas-steam cycle plant.
The prior art also has a cluster of prior art heavy duty gas turbines combined with a pressurized water reactor steam turbine in a combined cycle intended to achieve higher thermal efficiencies.
(III) the invention content:
the technical problem to be solved is as follows:
in the prior art, a turbine type compressor of a heavy gas turbine for a power station is coaxial with a gas turbine and has the same rotating speed, and after a generator is connected to the power station in a grid mode, the rotating speed of the turbine type compressor is not adjustable; by means of the 1-stage adjustable inlet guide vane and the 3-stage adjustable stationary vane, the air flow is adjusted from 100% load to 50% load, the efficiency of the air compressor is obviously reduced, the load is reduced continuously, the efficiency of the air compressor is reduced sharply, and the possibility of surging exists;
compared with coal, natural gas is expensive, and a heavy-duty gas turbine for a power station is usually used for peak shaving to make up for the peak shaving characteristics of new energy sources such as wind power, photovoltaic and the like, but the heat consumption of the heavy-duty gas turbine for the power station in the prior art is increased sharply under low load, the working efficiency of a gas compressor is not 40% even under the low load, and the peak shaving characteristics of the heavy-duty gas turbine for the power station in the prior art are not ideal or even inferior to those of a coal-fired unit in the prior art.
The technical scheme for solving the technical problem is as follows:
the heavy gas turbine with the variable speed synchronous motor driving the gas compressor adopts a technical route completely different from the prior art, and changes' the turbine type gas compressor and the gas turbine are coaxial and have the same rotating speed, and after the generator is connected to the power grid, the rotating speed of the turbine type gas compressor is not adjustable; the design of the method is that the turbine type air compressor is independently driven by a variable speed synchronous motor, and the turbine type air compressor is adjusted in a whole course from starting, carrying low load, middle load and high load and changing the rotating speed and the compression ratio in the whole course, and the turbine type air compressor runs in a high-efficiency working condition in the whole course; the shaft power generated by the gas turbine is converted entirely into electrical energy via a corresponding generator.
The invention discloses a heavy gas turbine with a variable speed synchronous motor driving a gas compressor, which comprises the gas compressor (1), the variable speed synchronous motor (2), a static excitation device (3), a variable frequency power supply (4), a combustion chamber (5), a gas turbine (6) and a generator (7); the input end of the variable frequency power supply (4) is connected with a 3-phase 10kV and 50Hz factory high-voltage bus, 3-phase 1Hz to 120 Hz/3-phase 1Hz to 60Hz alternating current with good waveform is output, the output voltage is increased along with the increase of the output frequency, and when the output frequency reaches 120Hz/60Hz, the output voltage reaches 10 kV; the variable speed synchronous motor (2) is provided with a static excitation device (3); the variable speed synchronous motor (2) is driven by a variable frequency power supply (4), and the rotating speed is infinitely adjustable from 60rpm to 7200rpm/60rpm to 3600 rpm; the variable speed synchronous motor (2) is directly connected with the air compressor (1) through a pair of wheels, the whole process is regulated by changing the rotating speed and the compression ratio, the power of an output shaft at the highest rotating speed is enough to compress the rated air quantity to the rated compression ratio, and necessary allowance is left; a suction inlet of the air compressor (1) sucks air through the filter assembly cluster, and an outlet of the air compressor (1) is connected with an air inlet of the combustion chamber (5) through a pipeline; a high-temperature flue gas outlet of the combustion chamber (5) is connected with a gas turbine (6) through a high-temperature flue; the tail gas of the gas turbine at the outlet of the gas turbine (6) is sent to a flue gas inlet of a waste heat boiler; the output shaft of the gas turbine (6) is directly connected with the generator (7) through a pair of wheels; the generator (7) converts the output shaft power of the gas turbine (6) into electric power with highest efficiency; the variable frequency power supply (4) is a power module series connection type high-voltage variable frequency power supply, 3 phases of 10kV power frequency are input, 3 phases of 1Hz to 120Hz/1Hz to 60Hz, 0.08kV to 10kV/0.16kV to 10kV are output, and the overload coefficient is 1.5; the system has two operation modes of a starting mode and an energy-saving mode; the starting mode comprises a 0-rotation speed starting mode and a rotation starting mode, and has a vector control characteristic; a power saving mode having a VVVF characteristic; the main control board of the variable frequency power supply (4) and the main control board of the static excitation device (3) are communicated with each other, so that the variable speed synchronous motor (2) is ensured not to lose synchronism and high efficiency and high power factors are kept; the phase-shifting transformer and the power electronic device of the variable frequency power supply (4) are both water-cooled and protection grade IP 67; the variable speed synchronous motor (2) inputs alternating current of 1Hz to 120Hz/1Hz to 60Hz and 0.08kV to 10kV/0.16kV to 10 kV; the rotating speed is 60rpm-7200rpm/60rpm-3600 rpm; static excitation, F-level insulation, water-hydrogen cooling, hydrogen pressure of 0.4MPa and protection level IP 67; sliding bearings and forced lubrication; the static excitation device (3) is coordinated and controlled by the variable frequency power supply (4) to meet the excitation requirements of the variable speed synchronous motor (2) under various working conditions of a starting mode, an energy-saving mode and a fault shutdown; the static excitation device (3) is provided with a de-excitation loop; the compressor (1) adopts a full turbine stage, 7 stages/15 stages; when the air suction temperature is 20 ℃, the highest compression ratio is 21, and the sliding bearing is forcibly lubricated.
The invention has the beneficial effects that:
the rotating speed of the gas compressor driven by the variable speed synchronous motor is steplessly adjustable in a range of 0-100%, the gas compressor can keep high-efficiency operation in the whole high, medium and low load ranges, and surge cannot occur;
the gas compressor driven by the variable speed synchronous motor can accurately adjust the mass flow and the compression ratio of air required by the gas turbine under different loads and different meteorological conditions;
the compressors driven by the variable speed synchronous motors may all be constituted by turbine stages; or the turbine stage and the centrifugal stage can be mixed to form the turbine;
the maximum speed of the compressor driven by the variable speed synchronous motor can be the same as the speed of the gas turbine, so as to fully utilize the mature product line of the traditional synchronous motor in the prior art;
the highest rotating speed of the compressor driven by the variable speed synchronous motor can be one time or higher than that of the gas turbine, and the volume, weight, stage number and manufacturing cost of the compressor with the same compression ratio and the same mass flow are obviously reduced;
depending on the heavy-duty gas turbine of the variable speed synchronous motor driven gas compressor, the heavy-duty gas turbine for the power station with the compression ratio of more than 23 and the initial gas temperature of more than 1700 ℃ can be designed and manufactured so as to obtain higher single-cycle efficiency and combined cycle efficiency of the gas turbine and the steam turbine;
depending on the heavy-duty gas turbine with the gas compressor driven by the variable speed synchronous motor, the maximum electric power output by the shaft of the heavy-duty gas turbine is increased by times, and the power generation heat consumption of the gas turbine-steam turbine combined cycle is greatly reduced;
depending on the heavy gas turbine of the variable speed synchronous motor driven gas compressor, the output electric power of the heavy gas turbine shaft is multiplied, the power supply heat consumption under low load in the combined cycle of the gas turbine and the steam turbine is obviously reduced, and the power supply heat consumption under high load is also reduced;
depending on the heavy gas turbine of the variable speed synchronous motor driven gas compressor, the heavy gas turbine with the output electric power of 1000MW or higher output of the shaft of the gas turbine can be designed and manufactured;
depending on the heavy gas turbine of the variable speed synchronous motor driven gas compressor, the heavy gas turbine of the same type can easily match the atmospheric pressure of different installation places and the atmospheric temperature in different seasons by a method of finely adjusting the air pressure, the mass flow and the fuel quantity at the outlet of the gas compressor, so as to obtain excellent technical and economic indexes;
by means of the heavy-duty gas turbine with the variable speed synchronous motor driving the gas compressor, the heavy-duty gas turbine can be started and stopped safely, stably and quickly by means of a method for finely adjusting the air pressure, the mass flow and the fuel quantity at the outlet of the gas compressor;
by means of the heavy-duty gas turbine with the gas compressor driven by the variable speed synchronous motor, the peak load response interval of the heavy-duty gas turbine can be expanded by a method of finely adjusting the air pressure, the mass flow and the fuel quantity at the outlet of the gas compressor, and the tail gas temperature of the heavy-duty gas turbine is maintained at a target value and only fluctuates within a small required range;
depending on the heavy-duty gas turbine of the variable speed synchronous motor driving the gas compressor, the starting current of the variable speed synchronous motor driving the gas compressor does not exceed the rated current of the variable speed synchronous motor;
the heavy gas turbine of the gas compressor driven by the variable speed synchronous motor has a large arrangement space of a combustion chamber, is easy to realize low-nitrogen combustion measures such as graded air supply, flue gas recirculation, water spray and the like, and greatly reduces the generation amount of NOx;
by means of the heavy-duty gas turbine with the gas compressor driven by the variable speed synchronous motor, the heat return arrangement between gas-steam combined cycles is easy to realize, and the heat consumption of the gas-steam combined cycles is obviously reduced;
by means of the heavy gas turbine with the gas compressor driven by the variable speed synchronous motor, the gas compressor is far away from a surge critical line under the starting working condition and the low-load working condition, the possibility of surge is greatly reduced, an exhaust hole is not required to be arranged at the middle stage of the gas compressor, so that the surge is prevented, and the safety and the economical efficiency of operation are remarkably improved;
the heavy gas turbine of the variable speed synchronous motor driven gas compressor of the invention has the advantages of greatly reducing the machining workload of high-precision large-piece machinery, greatly reducing the weight and the rotational inertia of the rotor, reducing the cost of design, manufacture, installation and debugging, and easily realizing modularization, serialization and maximization;
the heavy-duty gas turbine driven by the variable speed synchronous motor is particularly suitable for forming combined cycle with a pressurized water reactor steam turbine, and obtains higher combined cycle thermal efficiency by higher combustion temperature of a combustion chamber and gas turbine tail gas temperature.
(IV) description of the drawings:
FIG. 1 is a diagram of a heavy duty gas turbine system with a variable speed synchronous motor driving the compressor.
In fig. 1:
1 compressor, 2 speed-changing synchronous motor
3 static excitation device, 4 variable frequency power supply,
5 combustion chamber, 6 gas turbine,
7, a generator.
(V) specific embodiment:
example 1:
a preferred mode of carrying out the invention will now be described with reference to fig. 1, which illustrates a heavy duty gas turbine (120Hz scheme) with a variable speed synchronous motor driven compressor of stage H (only gas turbine inlet temperature and maximum exhaust gas mass flow comparable to prior art stage H).
The invention discloses a heavy gas turbine with a variable speed synchronous motor driving a gas compressor, which comprises the gas compressor (1), the variable speed synchronous motor (2), a static excitation device (3), a variable frequency power supply (4), a combustion chamber (5), a gas turbine (6) and a generator (7); the input end of the variable frequency power supply (4) is connected with a 3-phase 10kV and 50Hz station bus, 3-phase alternating current with good waveform from 1Hz to 120Hz is output, the output voltage is increased along with the increase of the output frequency, and when the output frequency reaches 120Hz, the output voltage reaches 10 kV; the variable speed synchronous motor (2) is provided with a static excitation device (3); the variable speed synchronous motor (2) is driven by a variable frequency power supply (4), and the rotating speed is steplessly adjustable from 60rpm to 7200 rpm; the variable speed synchronous motor (2) is directly connected with the air compressor (1) through a pair of wheels, the whole process is regulated by changing the rotating speed and the compression ratio, and the shaft power is 720MW when the rotating speed is the highest; a suction inlet of the air compressor (1) sucks air through the filter assembly cluster, and an outlet of the air compressor (1) is connected with an air inlet of the combustion chamber (5) through a pipeline; a high-temperature flue gas outlet of the combustion chamber (5) is connected with a gas turbine (6) through a high-temperature flue; the tail gas of the gas turbine at the outlet of the gas turbine (6) is sent to a flue gas inlet of a waste heat boiler; the output shaft of the gas turbine (6) is directly connected with the generator (7) through a pair of wheels; the maximum output power of the generator (7) is 1200 MW.
The variable frequency power supply (4) is a power module series connection type high-voltage variable frequency power supply, 3-phase 10kV power frequency is input, 3-phase 1Hz to 120Hz and 0.08kV-10kV alternating current are output, and the overload coefficient is 1.5; the system has two operation modes of a starting mode and an energy-saving mode; the starting mode comprises a 0-rotation speed starting mode and a rotation starting mode, and has a vector control characteristic; a power saving mode having a VVVF characteristic; the main control board of the variable frequency power supply (4) and the main control board of the static excitation device (3) are communicated with each other, so that the variable speed synchronous motor (2) is ensured not to lose step and high efficiency and high power factors are kept; the phase-shifting transformer and the power electronic device of the variable frequency power supply (4) are both water-cooled and protection grade IP 67.
The input of the variable speed synchronous motor (2) is 1Hz-120Hz and 0.08kV-10 kV; the rotating speed is 60rpm-7200 rpm; static excitation, F-level insulation, water-hydrogen cooling, hydrogen pressure of 0.4MPa and protection level IP 67; sliding bearing and forced lubrication.
The static excitation device (3) is coordinated and controlled by the variable frequency power supply (4) to meet the excitation requirements of the variable speed synchronous motor (2) under various working conditions of a starting mode, an energy-saving mode and a fault shutdown; the static excitation device (3) is provided with a de-excitation loop.
The compressor (1) adopts a full turbine stage, 7 stages; when the air suction temperature is 20 ℃, the highest compression ratio is 21, and the sliding bearing is in forced lubrication.
Example 2:
a preferred mode of carrying out the invention will now be described with reference to fig. 1, which illustrates a heavy duty gas turbine (60Hz scheme) with a variable speed synchronous motor driven compressor of stage H (only gas turbine inlet temperature and maximum exhaust gas mass flow comparable to prior art stage H).
The invention discloses a heavy gas turbine with a variable speed synchronous motor driving a gas compressor, which comprises the gas compressor (1), the variable speed synchronous motor (2), a static excitation device (3), a variable frequency power supply (4), a combustion chamber (5), a gas turbine (6) and a generator (7); the input end of the variable frequency power supply (4) is connected with a 3-phase 10kV and 50Hz station bus, 3-phase alternating current with good waveform from 1Hz to 60Hz is output, the output voltage is increased along with the increase of the output frequency, and when the output frequency reaches 60Hz, the output voltage reaches 10 kV; the variable speed synchronous motor (2) is provided with a static excitation device (3); the variable speed synchronous motor (2) is driven by a variable frequency power supply (4), and the rotating speed is infinitely adjustable from 60rpm to 3600 rpm; the variable speed synchronous motor (2) is directly connected with the air compressor (1) through a pair of wheels, the whole process is regulated by changing the rotating speed and the compression ratio, and the shaft power is 720MW when the rotating speed is the highest; a suction inlet of the air compressor (1) sucks air through the filter assembly cluster, and an outlet of the air compressor (1) is connected with an air inlet of the combustion chamber (5) through a pipeline; a high-temperature flue gas outlet of the combustion chamber (5) is connected with a gas turbine (6) through a high-temperature flue; the tail gas of the gas turbine at the outlet of the gas turbine (6) is sent to a flue gas inlet of a waste heat boiler; the output shaft of the gas turbine (6) is directly connected with the generator (7) through a pair of wheels; the maximum output power of the generator (7) is 1200 MW.
The variable frequency power supply (4) is a power module series connection type high-voltage variable frequency power supply, 3-phase 10kV power frequency is input, 3-phase 1Hz to 60Hz and 0.16kV-10kV alternating current are output, and the overload coefficient is 1.5; the system has two operation modes of a starting mode and an energy-saving mode; the starting mode comprises a 0-rotation speed starting mode and a rotation starting mode, and has a vector control characteristic; a power saving mode having a VVVF characteristic; the main control board of the variable frequency power supply (4) and the main control board of the static excitation device (3) are communicated with each other, so that the variable speed synchronous motor (2) is ensured not to lose step and high efficiency and high power factors are kept; the phase-shifting transformer and the power electronic device of the variable frequency power supply (4) are both water-cooled and protection grade IP 67.
The input of the variable speed synchronous motor (2) is 1Hz-60Hz and 0.16kV-10 kV; the rotating speed is 60rpm-3600 rpm; static excitation, F-level insulation, water-hydrogen cooling, hydrogen pressure of 0.4MPa and protection level IP 67; sliding bearings, forced lubrication.
The static excitation device (3) is coordinated and controlled by the variable frequency power supply (4) to meet the excitation requirements of the variable speed synchronous motor (2) under various working conditions of a starting mode, an energy-saving mode and a fault shutdown; the static excitation device (3) is provided with a de-excitation loop.
The compressor (1) adopts a full turbine stage, 15 stages; when the air suction temperature is 20 ℃, the highest compression ratio is 21, and the sliding bearing is in forced lubrication.
Claims (1)
1. A heavy gas turbine of variable speed synchronous motor driven compressor, its characterized in that: the variable-speed synchronous generator comprises a gas compressor (1), a variable-speed synchronous motor (2), a static excitation device (3), a variable-frequency power supply (4), a combustion chamber (5), a gas turbine (6) and a generator (7); the input end of the variable frequency power supply (4) is connected with a 3-phase 10kV and 50Hz factory high-voltage bus, 3-phase 1Hz to 120 Hz/3-phase 1Hz to 60Hz alternating current with good waveform is output, the output voltage is increased along with the increase of the output frequency, and when the output frequency reaches 120Hz/60Hz, the output voltage reaches 10 kV; the variable speed synchronous motor (2) is provided with a static excitation device (3); the variable speed synchronous motor (2) is driven by a variable frequency power supply (4), and the rotating speed is infinitely adjustable from 60rpm to 7200rpm/60rpm to 3600 rpm; the variable speed synchronous motor (2) is directly connected with the air compressor (1) through a pair of wheels, the whole process is regulated by changing the rotating speed and the compression ratio, the power of an output shaft at the highest rotating speed is enough to compress the rated air quantity to the rated compression ratio, and necessary allowance is left; a suction inlet of the air compressor (1) sucks air through the filter assembly cluster, and an outlet of the air compressor (1) is connected with an air inlet of the combustion chamber (5) through a pipeline; a high-temperature flue gas outlet of the combustion chamber (5) is connected with a gas turbine (6) through a high-temperature flue; the tail gas of the gas turbine at the outlet of the gas turbine (6) is sent to a flue gas inlet of a waste heat boiler; the output shaft of the gas turbine (6) is directly connected with the generator (7) through a pair of wheels; the generator (7) converts the output shaft power of the gas turbine (6) into electric power with highest efficiency; the variable frequency power supply (4) is a power module series connection type high-voltage variable frequency power supply, 3 phases of 10kV power frequency are input, 3 phases of 1Hz to 120Hz/1Hz to 60Hz, 0.08kV to 10kV/0.16kV to 10kV are output, and the overload coefficient is 1.5; the system has two operation modes of a starting mode and an energy-saving mode; the starting mode comprises a 0-rotation speed starting mode and a rotation starting mode, and has a vector control characteristic; a power saving mode having a VVVF characteristic; the main control board of the variable frequency power supply (4) and the main control board of the static excitation device (3) are communicated with each other, so that the variable speed synchronous motor (2) is ensured not to lose step and high efficiency and high power factors are kept; the phase-shifting transformer and the power electronic device of the variable frequency power supply (4) are both water-cooled and protection grade IP 67; the variable speed synchronous motor (2) inputs alternating current of 1Hz to 120Hz/1Hz to 60Hz and 0.08kV to 10kV/0.16kV to 10 kV; the rotating speed is 60rpm-7200rpm/60rpm-3600 rpm; static excitation, F-level insulation, water-hydrogen cooling, hydrogen pressure of 0.4MPa and protection level IP 67; sliding bearings and forced lubrication; the static excitation device (3) is coordinated and controlled by the variable frequency power supply (4) to meet the excitation requirements of the variable speed synchronous motor (2) under various working conditions of a starting mode, an energy-saving mode and a fault shutdown; the static excitation device (3) is provided with a de-excitation loop; the compressor (1) adopts a full turbine stage, 7 stages/15 stages; when the air suction temperature is 20 ℃, the highest compression ratio is 21, and the sliding bearing is in forced lubrication.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810341130.XA CN108590857B (en) | 2018-04-17 | 2018-04-17 | Heavy gas turbine with variable speed synchronous motor driving compressor |
| PCT/CN2019/000071 WO2019200975A1 (en) | 2018-04-17 | 2019-04-16 | Heavy-duty gas turbine having variable-speed synchronous motor driven compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810341130.XA CN108590857B (en) | 2018-04-17 | 2018-04-17 | Heavy gas turbine with variable speed synchronous motor driving compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108590857A CN108590857A (en) | 2018-09-28 |
| CN108590857B true CN108590857B (en) | 2022-05-13 |
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| CN201810341130.XA Active CN108590857B (en) | 2018-04-17 | 2018-04-17 | Heavy gas turbine with variable speed synchronous motor driving compressor |
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| CN108590857B (en) * | 2018-04-17 | 2022-05-13 | 章礼道 | Heavy gas turbine with variable speed synchronous motor driving compressor |
| CN111878239B (en) * | 2020-08-06 | 2021-06-22 | 中国人民解放军海军工程大学 | Gas turbine starting control system and method |
| CN114352402B (en) * | 2022-01-17 | 2024-05-28 | 中船重工(重庆)西南装备研究院有限公司 | Supercharger self-adaptive control system |
| CN114856832B (en) * | 2022-05-11 | 2023-06-20 | 中国人民解放军第五七一九工厂 | Method for controlling fuel flow during starting of aero-engine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5722229A (en) * | 1994-07-30 | 1998-03-03 | Provost; Michael J. | Auxiliary gas turbine engines |
| CN1653262A (en) * | 2002-05-10 | 2005-08-10 | 西门子西屋电力公司 | Methods for starting a combustion turbine and combustion turbine generator configured to implement same methods |
| CN1849444A (en) * | 2003-09-12 | 2006-10-18 | 麦斯国际有限公司 | Multi-spool turbogenerator system and control method |
| CN102257247A (en) * | 2008-12-16 | 2011-11-23 | 西门子公司 | Method for stabilization of the network frequency of an electrical power network |
| CN202832797U (en) * | 2012-08-24 | 2013-03-27 | 沈阳黎明航空发动机(集团)有限责任公司 | Start-up system of gas turbine based on frequency changer |
| CN103147955A (en) * | 2013-03-04 | 2013-06-12 | 章礼道 | Water-feeding pump system driven by high-speed synchronous motor |
| CN105099306A (en) * | 2014-05-12 | 2015-11-25 | 阿尔斯通技术有限公司 | Static exciter system for generators |
| CN105909387A (en) * | 2015-02-24 | 2016-08-31 | 通用电器技术有限公司 | A method for operating a gas turbine arrangement |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7449795B2 (en) * | 2005-08-05 | 2008-11-11 | Siemens Energy, Inc. | Electric power generation system using a permanent magnet dynamoelectric machine for starting a combustion turbine and for generating uninterruptible excitation power |
| US8584464B2 (en) * | 2005-12-20 | 2013-11-19 | General Electric Company | Gas turbine engine assembly and method of assembling same |
| WO2014020772A1 (en) * | 2012-08-03 | 2014-02-06 | 株式会社日立製作所 | Twin-shaft gas turbine power generation system, and control device and control method for gas turbine system |
| CN106382161B (en) * | 2016-11-21 | 2018-01-19 | 西安交通大学 | A kind of multiple level efficient air turbine installation using hydrogen-rich fuel |
| CN108590857B (en) * | 2018-04-17 | 2022-05-13 | 章礼道 | Heavy gas turbine with variable speed synchronous motor driving compressor |
-
2018
- 2018-04-17 CN CN201810341130.XA patent/CN108590857B/en active Active
-
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- 2019-04-16 WO PCT/CN2019/000071 patent/WO2019200975A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5722229A (en) * | 1994-07-30 | 1998-03-03 | Provost; Michael J. | Auxiliary gas turbine engines |
| CN1653262A (en) * | 2002-05-10 | 2005-08-10 | 西门子西屋电力公司 | Methods for starting a combustion turbine and combustion turbine generator configured to implement same methods |
| CN1849444A (en) * | 2003-09-12 | 2006-10-18 | 麦斯国际有限公司 | Multi-spool turbogenerator system and control method |
| CN102257247A (en) * | 2008-12-16 | 2011-11-23 | 西门子公司 | Method for stabilization of the network frequency of an electrical power network |
| CN202832797U (en) * | 2012-08-24 | 2013-03-27 | 沈阳黎明航空发动机(集团)有限责任公司 | Start-up system of gas turbine based on frequency changer |
| CN103147955A (en) * | 2013-03-04 | 2013-06-12 | 章礼道 | Water-feeding pump system driven by high-speed synchronous motor |
| CN105099306A (en) * | 2014-05-12 | 2015-11-25 | 阿尔斯通技术有限公司 | Static exciter system for generators |
| CN105909387A (en) * | 2015-02-24 | 2016-08-31 | 通用电器技术有限公司 | A method for operating a gas turbine arrangement |
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| WO2019200975A1 (en) | 2019-10-24 |
| CN108590857A (en) | 2018-09-28 |
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