CN113417737A - Electric fracturing gas generator energy storage device and control method - Google Patents
Electric fracturing gas generator energy storage device and control method Download PDFInfo
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- CN113417737A CN113417737A CN202110539534.1A CN202110539534A CN113417737A CN 113417737 A CN113417737 A CN 113417737A CN 202110539534 A CN202110539534 A CN 202110539534A CN 113417737 A CN113417737 A CN 113417737A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
- F02B43/10—Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
- F02B43/10—Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
- F02B2043/103—Natural gas, e.g. methane or LNG used as a fuel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The invention discloses an energy storage device of an electric fracturing gas generator and a control method, the device comprises a primary pressure regulating pry (22), a secondary pressure regulating pry (18), a gas generator set (19) and a plurality of gas power generation control rooms (20), wherein the primary pressure regulating pry (22) is connected with the secondary pressure regulating pry (18), the secondary pressure regulating pry (18) is connected with the gas generator set (19) through a gas shunt manifold (23), the gas generator set (19) comprises a plurality of gas generators, the gas generators are connected with the gas power generation control rooms (20), the energy storage device also comprises a power transformation and distribution room (21), the power transformation and distribution room (21) is connected with the gas power generation control rooms (20), and the energy storage device (24) is connected with the gas power generation control rooms (20). The invention can improve the load coefficient of the single machine in the using process, thereby improving the energy conversion efficiency, reducing the unit electric quantity cost and reducing the power generation cost.
Description
Technical Field
The invention relates to the technical field of petroleum and natural gas industry, in particular to an energy storage device of an electric fracturing gas generator and a control method.
Background
The gas generator set is a novel generator set developed to adapt to the environmental protection requirements of the world and the new market environment. The natural gas generator set is mainly divided into two types, one is a combined cycle gas turbine, and the other is a gas internal combustion engine. The power of the gas turbine is relatively high, and the gas turbine is mainly used in large and medium-sized power stations, and the power of the gas combustion engine is relatively low, and the gas turbine is mainly used in small distributed power stations. It is a new type green environmental protection power for replacing fuel oil and coal-fired machine set.
The shale gas is natural gas which is rich in organic matters, has a certain commercial biological cause, a certain commercial pyrolytic cause and a certain commercial mixed cause due to organic matter adsorption effect or cracks and matrix pores in rocks in mature dark shale or high-carbon shale. Shale gas is an unconventional natural gas present in reservoir rock systems dominated by organic-rich shale. The gas is a biochemical cause gas, a thermal cause gas or a mixture of the biochemical cause gas and the thermal cause gas which are continuously generated, can exist in natural cracks and pores in a free state, exist on the surfaces of kerogen and clay particles in an adsorption state, and are stored in the kerogen and asphaltene in a dissolving state in a very small amount, and the proportion of the free gas is generally between 20 and 85 percent.
The electric fracturing power supply method mainly comprises power supply of a power grid and power generation of a unit, wherein a gas power generation system which adopts wellhead shale gas as primary energy to directly generate power without an external transmission pipeline is widely used due to the characteristics of cleanness and high efficiency. The gas power generation system has the problems that the load increasing and reducing characteristic is soft, and the shutdown is impacted by load change under the condition of high load generation easily, so that the load rate of equipment is kept at 60% in the use process, and the overall efficiency of a unit is low.
Disclosure of Invention
In order to solve the problems, the invention provides an energy storage device of an electric fracturing gas generator on one hand, which comprises a primary pressure regulating pry, a secondary pressure regulating pry, a gas generator set and a plurality of gas power generation control rooms, wherein the primary pressure regulating pry is connected with the secondary pressure regulating pry, the secondary pressure regulating pry is connected with the gas generator set through a gas shunt manifold, the gas generator set comprises a plurality of gas generators, the gas generators are connected with the gas power generation control rooms, the energy storage device also comprises a power transformation and distribution room, the power transformation and distribution room is connected with the gas power generation control rooms, and the energy storage device is connected with the gas power generation control rooms.
Preferably, one-level pressure regulating sled is the heating pressure regulating sled for with well head gas or the heating of gasification LNG, and adjustment export gas pressure, the heating pressure regulating sled includes electric heater and pressure transmitter and temperature transmitter and high pressure filter and combustible gas alarm and high-pressure ball valve and emergency cutoff valve and air-vent valve and manometer and safety relief valve.
Preferably, gas generator is sled dress structure, including gas generator base sled, gas internal-combustion engine and synchronous generator all set up on gas generator base sled, just gas internal-combustion engine is connected with synchronous generator, the gas internal-combustion engine front end is provided with the exhaust muffler, the synchronous generator rear end is provided with the muffler that admits air, be provided with the sound insulation wall body around gas internal-combustion engine and the synchronous generator.
Preferably, energy memory is sled device structure, sled at the bottom of including energy memory, be provided with the wall body at the bottom of the energy memory on the sled, vacuole formation between the wall body, be provided with battery package and electric energy control module and transformer and high tension switchgear in the cavity, the battery package is through establishing ties and/or parallelly connected the constitution by a plurality of energy storage battery, battery package and transformer all are connected with electric energy control module electrical connection, high tension switchgear is connected with the transformer.
Preferably, the gas power generation control room is the sled dress structure, including the sled at the bottom of the gas power generation control room, be provided with a plurality of gas power generation switch boards and a plurality of high tension switchgear on the sled at the bottom of the gas power generation control room, high tension switchgear interconnects through high tension bus, the gas power generation switch board is connected with gas generating set through communication cable, still be provided with DC screen and low voltage distribution board on the sled at the bottom of the gas power generation control room, the DC screen is connected with gas power generation switch board and high tension switchgear respectively, the low voltage distribution board is used for gas generating set cylinder liner water heater and cooling fan distribution.
The invention provides a control method of an energy storage device of an electric fracturing gas generator, which comprises the following steps:
s1: the energy storage device is started to supply power to the outside;
s2: a cylinder sleeve water heater and a lubricating system of the gas generator set operate;
s3: starting a gas generator set:
s4: the energy storage device is separated from the power supply bus, and the working mode is switched;
s5: the energy storage device and the gas generator set supply power to the outside simultaneously;
s6: the bus of the gas power generation control room transmits power to the outside;
s7: the energy storage device adjusts the charge-discharge working mode along with the load change, and preferentially responds to the load change.
The invention has the beneficial effects that: the problem of power supply of auxiliary equipment before starting of the gas generator set is solved by matching the gas generator set with the energy storage device; the problem of long dynamic adjustment time of the gas generator set is solved by the characteristic of quick response of charging and discharging of the energy storage device; the gas power generation device matched with the energy storage device has stronger impact resistance and stability, and can improve the load coefficient of a single machine in the use process, thereby improving the energy conversion efficiency, reducing the unit electric quantity cost and reducing the power generation cost.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic view of a gas generator;
FIG. 3 is a schematic diagram of an energy storage device;
FIG. 4 is a schematic structural view of a gas power generation control room;
FIG. 5 is a schematic structural view of the present invention;
FIG. 6 is a control flow chart of the present invention;
in the figure: 1-an exhaust silencer, 2-a gas internal combustion engine, 3-a synchronous generator, 4-an intake silencer, 5-a sound insulation wall, 6-a gas generator bottom pry, 7-a battery pack, 8-an electric energy control module, 9-a transformer, 10-a high-voltage switch cabinet, 11-a wall, 12-an energy storage device bottom pry, 13-a gas generation control cabinet, 14-a high-voltage switch cabinet, 15-a low-voltage distribution board, 16-a direct current screen, 17-a gas generation control room bottom pry, 18-a second-stage pressure regulating pry, 19-a gas generator set, 20-a gas generation control room, 21-a transformation and distribution room, 22-a first-stage pry, 23-a gas shunt manifold and 24-an energy storage device.
Detailed Description
Referring to fig. 1-5, the present invention provides an embodiment: an energy storage device of an electric fracturing gas generator comprises a primary pressure regulating pry 22, a secondary pressure regulating pry 18, a gas generator set 19 and a plurality of gas power generation control rooms 20, one end of the first-stage pressure regulating pry 22 is connected with an air source, the other end is connected with the second-stage pressure regulating pry 18 through a gas pipeline, the second-stage pressure regulating pry 18 is connected with an air inlet pipeline of the gas generator set 19 through a gas shunt manifold 23, the gas generator set 19 comprises a plurality of gas generators, the gas generators are connected with a gas generation control room 20 through cables, the electric fracturing gas generation energy storage device also comprises a power transformation and distribution room 21, one end of the power transformation and distribution room 21 is connected with the gas power generation control room 20 through a cable, the other end of the power transformation and distribution room is connected with a load, the electric fracturing gas power generation energy storage device further comprises an energy storage device 24, and the energy storage device 24 is connected with the gas power generation control room 20 through a cable.
Specifically, the present embodiment includes 6 groups of gas generators and 2 sets of gas power generation control rooms 20, which are respectively a 1# gas generator, a 2# gas generator, a 3# gas generator, a 4# gas generator, a 5# gas generator, a 6# gas generator, a 1# gas power generation control room and a 2# gas power generation control room, wherein the 1# gas generator, the 2# gas generator and the 3# gas generator are connected to the 1# gas power generation control room, and the 4# gas generator, the 5# gas generator and the 6# gas generator are connected to the 2# gas power generation control room; the 1# gas power generation control room and the 2# gas power generation control room are both connected with the power transformation and distribution room 21.
It is understood that in other embodiments, the gas-turbine generator set 19 may include any number of gas-turbine generators, and any number of sets of gas-turbine generator control rooms 20 may be configured according to actual needs to solve the actual needs.
Specifically, the primary pressure regulating pry 22 is a heating pressure regulating pry and is used for heating well head gas or gasified LNG and regulating outlet gas pressure, the heating pressure regulating pry comprises an electric heater, a pressure transmitter, a temperature transmitter, a high-pressure filter, a combustible gas alarm, a high-pressure ball valve, an emergency cut-off valve, a pressure regulating valve, a pressure gauge and a safety relief valve, and the electric heater is used for heating gas in a pipeline; the pressure transmitter is used for collecting the pressure in the heated gas pipeline; temperature transmitter is used for gathering gas pipeline internal gas temperature, second grade pressure regulating sled 18 is used for distributing the gas after the heating to gas generating set 19.
Specifically, the gas generator is of a skid-mounted structure and comprises a gas generator bottom skid 6, a gas internal combustion engine 2 and a synchronous generator 3, wherein the gas internal combustion engine 2 and the synchronous generator 3 are both arranged on the gas generator bottom skid 6, a crankshaft of the gas internal combustion engine 2 is connected with the synchronous generator 3, and the voltage generated by the synchronous generator 3 is 10 kv; the front end of the gas internal combustion engine 2 is provided with an exhaust silencer 1, the rear end of the synchronous generator 3 is provided with an air inlet silencer 4, sound insulation walls 5 are arranged around the gas internal combustion engine 2 and the synchronous generator 3, and the exhaust silencer 1, the air inlet silencer 4 and the sound insulation walls 5 are all used for reducing the noise emission of the unit; the device is equipment for converting heat energy of fuel gas into electric energy.
Specifically, the energy storage device 24 is a skid-mounted structure, and is a device for supplying power to a device/system and absorbing electric energy of the device/system as a load by using battery charging and discharging characteristics, and includes an energy storage device bottom skid 12, a wall body 11 is arranged on the energy storage device bottom skid 12, a cavity is formed between the wall bodies 11, a battery pack 7, an electric energy control module 8, a transformer 9 and a high-voltage switch cabinet 10 are arranged in the cavity, the battery pack 7 is formed by connecting a plurality of energy storage batteries in series and/or in parallel, the battery pack 7 is electrically connected with the direct current side of the electric energy control module 8, and the electric energy control module 8 realizes charging and discharging of the battery pack 7 by controlling a semiconductor device to be turned on and off; the transformer 9 is electrically connected with the alternating current side of the electric energy control module 8, and the transformer 9 converts the low-voltage alternating current output by the electric energy control module 8 into 10 kV; the alternating current high-voltage switch cabinet 10 is connected with the high-voltage side of a transformer 9, and the high-voltage switch cabinet 10 is a 10kv high-voltage switch cabinet; it is understood that the above described modules/devices/apparatuses can be used as independent modules to realize the charging and discharging functions of the battery pack 7 through electrical connection or integrated into a whole.
Specifically, the gas power generation control room 20 is a skid-mounted structure and is a device for controlling the start-stop, parallel operation, load distribution and electric energy access of the gas power generator set; the gas power generation control house bottom pry 17 is arranged, a plurality of gas power generation control cabinets 13 and a plurality of high-voltage switch cabinets 14 are arranged on the gas power generation control house bottom pry 17, and the high-voltage switch cabinets 14 are connected with each other through high-voltage buses and are used for being connected with a 10kV power supply generated by a gas generator and outputting the power supply to the outside; the gas power generation control cabinet 13 is connected with the gas generator set 19 through a communication cable, and is used for controlling the start-stop and load distribution of the gas generator and monitoring the running state of the gas generator; the gas power generation control room bottom pry 17 is also provided with a direct current screen 16 and a low-voltage distribution board 15, and the direct current screen 16 is respectively connected with the gas power generation control cabinet 13 and the high-voltage switch cabinet 14 and supplies power to a secondary loop of the gas power generation control cabinet 13 and the high-voltage switch cabinet 14; the low-voltage distribution board 15 is used for power distribution of a cylinder liner water heater and a cooling fan of the gas generator set 19, and the cylinder liner water heater and the cooling fan of the gas generator set 19 are arranged in the gas generator set 19 and are not marked in the figure.
Referring to fig. 6, the invention provides a control method of an energy storage device of an electric fracturing gas generator, which comprises the following steps:
s1: the energy storage device 24 is started to supply power to the outside;
s2: a 19 cylinder liner water heater and a lubricating system of the gas generator set operate;
s3: and starting the gas generator set 19:
s4: the energy storage device 24 is separated from the power supply bus, and the working mode is switched;
s5: the energy storage device 24 and the gas generator set supply power to the outside simultaneously;
s6: the bus of the gas power generation control room 20 transmits power to the outside;
s7: the energy storage device 24 adjusts the charge-discharge operating mode with the load change, and preferentially responds to the load change.
In the above embodiments, the basic principle and the main features of the present invention and the advantages of the present invention are described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, and that modifications and variations can be made by one skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides an electronic fracturing gas generator energy memory, a serial communication port, including one-level pressure regulating sled (22), second grade pressure regulating sled (18), gas generating set (19) and a plurality of gas power generation control room (20), one-level pressure regulating sled (22) are connected with second grade pressure regulating sled (18), second grade pressure regulating sled (18) are connected with gas generating set (19) through gas reposition of redundant personnel manifold (23), gas generating set (19) include a plurality of gas generator, gas generator is connected with gas power generation control room (20), still includes to become distribution room (21), become distribution room (21) and be connected with gas power generation control room (20), still include energy memory (24), energy memory (24) are connected with gas power generation control room (20).
2. The energy storage device of the electric fracturing gas generator as claimed in claim 1, wherein the first-stage pressure regulating pry (22) is a heating pressure regulating pry for heating well gas or gasified LNG and regulating outlet gas pressure, and the heating pressure regulating pry comprises an electric heater, a pressure transmitter, a temperature transmitter, a high-pressure filter, a combustible gas alarm, a high-pressure ball valve, an emergency cut-off valve, a pressure regulating valve, a pressure gauge and a safety relief valve.
3. The electric fracturing gas generator energy storage device according to claim 1, wherein the gas generator is of a skid-mounted structure and comprises a gas generator bottom skid (6), a gas internal combustion engine (2) and a synchronous generator (3), the gas internal combustion engine (2) and the synchronous generator (3) are both arranged on the gas generator bottom skid (6), the gas internal combustion engine (2) is connected with the synchronous generator (3), an exhaust silencer (1) is arranged at the front end of the gas internal combustion engine (2), an intake silencer (4) is arranged at the rear end of the synchronous generator (3), and sound insulation walls (5) are arranged around the gas internal combustion engine (2) and the synchronous generator (3).
4. An electric fracturing gas generator energy storage device according to claim 1, wherein the energy storage device (24) is of a skid-mounted structure and comprises an energy storage device bottom skid (12), the energy storage device bottom skid (12) is provided with a wall body (11), a cavity is formed between the wall bodies (11), a battery pack (7), an electric energy control module (8), a transformer (9) and a high-voltage switch cabinet (10) are arranged in the cavity, the battery pack (7) is composed of a plurality of energy storage batteries in series connection and/or parallel connection, the battery pack (7) and the transformer (9) are both electrically connected with the electric energy control module (8), and the high-voltage switch cabinet (10) is connected with the transformer (9).
5. An electrical fracturing gas generator energy storage device as claimed in claim 1, the gas power generation control room (20) is of a skid-mounted structure and comprises a gas power generation control room bottom skid (17), a plurality of gas power generation control cabinets (13) and a plurality of high-voltage switch cabinets (14) are arranged on the gas power generation control house bottom pry (17), the high-voltage switch cabinets (14) are connected with each other through a high-voltage bus, the gas power generation control cabinet (13) is connected with a gas generator set (19) through a communication cable, the gas power generation control house bottom pry (17) is also provided with a direct current screen (16) and a low-voltage distribution board (15), the direct current screen (16) is respectively connected with the gas power generation control cabinet (13) and the high-voltage switch cabinet (14), and the low-voltage distribution board (15) is used for distributing power for a cylinder sleeve water heater and a cooling fan of the gas generator set (19).
6. A control method of an energy storage device of an electric fracturing gas generator is characterized by comprising the following steps:
s1: the energy storage device (24) is started to supply power to the outside;
s2: a cylinder sleeve water heater and a lubricating system of the gas generator set (19) operate;
s3: starting a gas generator set (19):
s4: the energy storage device (24) is separated from the power supply bus and the working mode is switched;
s5: the energy storage device (24) and the gas generator set supply power to the outside simultaneously;
s6: the bus of the gas power generation control room (20) transmits power to the outside;
s7: the energy storage device (24) adjusts the charge-discharge working mode along with the load change, and responds to the load change preferentially.
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| CN202110539534.1A CN113417737A (en) | 2021-05-18 | 2021-05-18 | Electric fracturing gas generator energy storage device and control method |
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| CN202110539534.1A CN113417737A (en) | 2021-05-18 | 2021-05-18 | Electric fracturing gas generator energy storage device and control method |
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| US11662384B2 (en) | 2020-11-13 | 2023-05-30 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Motor malfunction monitoring device, drive motor system and motor malfunction monitoring method |
| US11680472B2 (en) | 2020-11-24 | 2023-06-20 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Fracturing system |
| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
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