CN210724620U - High-power shale oil and gas exploitation electric control room - Google Patents
High-power shale oil and gas exploitation electric control room Download PDFInfo
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- CN210724620U CN210724620U CN201921832144.8U CN201921832144U CN210724620U CN 210724620 U CN210724620 U CN 210724620U CN 201921832144 U CN201921832144 U CN 201921832144U CN 210724620 U CN210724620 U CN 210724620U
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Abstract
The utility model relates to a supporting facility of fracturing unit equipment specifically is an automatically controlled room of fracturing unit equipment electric drive system. An electric control room for high-power shale oil-gas exploitation comprises a high-voltage incoming line cabinet, a first outgoing line cabinet, a second outgoing line cabinet, a first charging current-limiting cabinet, a second charging current-limiting cabinet, an incoming line connection cabinet, a first multi-pulse-wave phase-shifting transformer, a second multi-pulse-wave phase-shifting transformer, a first frequency converter, a second frequency converter, an MCC cabinet, a first water cooling system, a second water cooling system and an output cabinet; each frequency converter comprises a rectifier cabinet and two inverter cabinets, and is provided with an upper computer; the main control box of every contravariant cabinet internal integration installation contains the control panel of a set of power module, and the PLC controller of the rectifier cabinet internal integration installation contains detection, communication, control module, and PLC controller and high-pressure inlet wire cabinet, first outlet wire cabinet, second outlet wire cabinet, the host computer of converter, rectifier cabinet, contravariant cabinet, water cooling system establish the communication.
Description
Technical Field
The utility model relates to a supporting facility of fracturing unit equipment specifically is an automatically controlled room of fracturing unit equipment electric drive system.
Background
The exploitation of shale oil gas has become a hot spot of global resource development, the storage capacity of the shale oil gas in China accounts for about 1/5 of the world, and the shale oil gas has good exploration and development prospects. The application of the large-scale staged fracturing technology of the horizontal well group promotes the development of the industrial fracturing technology. The fracturing pump set is used as core equipment in shale gas exploitation, the investment proportion accounts for 25% -30% of the total amount of shale gas exploitation equipment, the quality, the efficiency and the operation cost of the fracturing pump set directly influence the shale gas exploitation cost, and the shale gas exploitation process is determined.
the conventional fracturing truck generally adopts a transmission mode that an engine drives a fracturing pump through a hydraulic torque converter or a gearbox, realizes stepless speed change under high power and high torque and further drives a plunger pump to act.
Disclosure of Invention
The utility model discloses a solve traditional mechanical transmission mode of diesel oil fracturing pump truck and have that unit power is little, area is big, adopt the diesel engine to provide power, the big and high scheduling problem of pollution of noise, provide an automatically controlled room of high-power shale oil gas exploitation equipment electric drive system.
The utility model discloses an adopt following technical scheme to realize: an electric control room for high-power shale oil-gas exploitation comprises a high-voltage incoming line cabinet, a first outgoing line cabinet, a second outgoing line cabinet, a first charging current-limiting cabinet, a second charging current-limiting cabinet, an incoming line connection cabinet, a first multi-pulse-wave phase-shifting transformer, a second multi-pulse-wave phase-shifting transformer, a first frequency converter, a second frequency converter, an MCC cabinet, a first water cooling system, a second water cooling system and an output cabinet; each frequency converter comprises a rectifier cabinet and two inverter cabinets, and is provided with an upper computer; the main control box integrally installed in each inversion cabinet comprises a group of control panels of power modules, the PLC controller integrally installed in the rectification cabinet comprises detection, communication and control modules, and the PLC controller is communicated with the high-voltage incoming cabinet, the first outgoing cabinet, the second outgoing cabinet, the upper computer of the frequency converter, the rectification cabinet, the inversion cabinet and the water cooling system; each water cooling system consists of a water cooling cabinet and a heat exchanger outer machine, and corresponds to one frequency converter respectively and is used for heat dissipation of the frequency converter water cooling substrate;
the network side 10kV voltage is sent into a high-voltage incoming cabinet, two paths of the network side 10kV voltage are divided by an internal high-voltage bus bar and sent into a first outgoing line cabinet and a second outgoing line cabinet, and then the network side voltage respectively enters a first charging current-limiting cabinet and a second charging current-limiting cabinet, and then the network side voltage of the two paths of the network side 10kV voltage is respectively converted into four groups of three-phase voltages 1800V and a group of 380V power supplies through two multi-pulse phase-shifting transformers; the 1800V power supply is supplied to the input end of a rectifier cabinet of the frequency converter, the output direct-current bus voltage of the rectifier cabinet is connected with the input end of an inverter cabinet, and the output end of the inverter cabinet provides a power supply for the six-phase asynchronous/permanent magnet synchronous motor.
One path of 10kV network side voltage is supplied to two sets of electric drive systems, and full-power operation can be realized; meanwhile, when the load power is halved, the two sets of electric control rooms are connected in series through the extension of the incoming line connection cabinet, and the normal power supply of the four sets of electric driving equipment supplied with the voltage of the 10kV network side is realized.
The device further comprises an auxiliary equipment system, wherein the auxiliary equipment system comprises a transformer temperature controller, an emergency lamp, a temperature control electric heater and a smoke alarm, wherein the transformer temperature controller is used for detecting the multi-pulse-wave phase-shifting transformer winding; the MCC cabinet provides 380V/220V power supply for each auxiliary unit. Compared with electric control equipment with the same power and space size, the technical scheme has the advantages that the occupied area of a well site is smaller, and the power density is integrated to be higher.
Further, the transformer temperature controller and the PLC are communicated through the CAN-open.
Furthermore, the output cabinet is a 3300V output cabinet, twelve groups of electric connectors are used for installing a power line of the asynchronous/permanent magnet synchronous motor in the output cabinet, four groups of electric connectors are used for detecting the temperature and the speed of the winding of the asynchronous/permanent magnet synchronous motor, two electric connectors are used for external remote communication, three-phase four-wire electric connectors are used for providing 380V/100A power supply for external equipment, and one three-phase four-wire electric connector is used for providing a 380V/400A power supply for external equipment.
Furthermore, the rectifier cabinet is a 24-pulse rectifier cabinet, and the internal rectifier bridge forms a 24-pulse rectifier circuit.
Furthermore, the MCC cabinet auxiliary power supply is configured to be a power supply which is independently provided by one path of auxiliary winding of the phase-shifting transformer to supply power to 380V/400A standby equipment, and the other path of auxiliary winding of the phase-shifting transformer supplies power to the auxiliary equipment of two sets of electric drive systems; two paths of phase-shifting transformer auxiliary windings are respectively connected to respective main circuit breakers in the MCC cabinet. Two paths of auxiliary windings of the phase-shifting transformer are respectively connected to respective main circuit breakers in the MCC cabinet, the circuit breakers are additionally arranged between the two circuit breakers, the two circuit breakers can be freely switched, when one path of auxiliary winding of the phase-shifting transformer fails, 380V/400A standby equipment stops being used, the other path of auxiliary winding of the transformer supplies power, and the fact that the power supply of the auxiliary equipment in the whole electric control room cannot be interrupted is guaranteed.
Furthermore, the electric control 380V power supply loop is made into a dual-power supply form. When the temperature in the electric control room is lower than-20 ℃, two input main circuit breakers of the MCC cabinet are kept in a disconnected state, an external 380V power supply is introduced into the MCC cabinet through a standby power supply interface of an output cabinet to supply power to an internal electric heater, and when the ambient temperature reaches above 0 ℃, the power is supplied by an auxiliary winding of an internal transformer.
The technical scheme of the invention has the following beneficial effects:
1. the high-voltage power grid is adopted for power supply, and compared with the conventional diesel/natural gas engine, the emission of nitrogen oxides and carbon oxides is almost zero, so that the energy consumption cost is reduced;
2. compared with an electric control room with the same power and space size, the electric control room adopting the electric control system further reduces the occupied area of a well site, so that the power integration density is higher.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
1-high voltage incoming line cabinet, 2-first outgoing line cabinet, 3-second outgoing line cabinet, 4-first charging current limiting cabinet, 5-second charging current limiting cabinet, 6-incoming line interconnection cabinet, 7-first multi-pulse phase-shifting transformer, 8-second multi-pulse phase-shifting transformer, 9-first frequency converter, 10-second frequency converter, 11-MCC cabinet, 12-heat exchanger, 13-water cooling cabinet, 14-output cabinet, 15-first transformer chamber, 16-second transformer chamber.
Detailed Description
As shown in fig. 1, an electric control room of an electric drive system of shale oil and gas equipment comprises a high-voltage incoming cabinet, a first outgoing cabinet 2, a second outgoing cabinet 3, a first charging current-limiting cabinet 4, a second charging current-limiting cabinet 5, an incoming connection cabinet 6, a first multi-pulse phase-shifting transformer 7, a second multi-pulse phase-shifting transformer 8, a first frequency converter 9, a second frequency converter 10, an MCC cabinet 11, a first water cooling system, a second water cooling system, a 3300V outgoing cabinet and an auxiliary equipment system.
The output voltage of the network side 10kV is respectively connected with two multi-pulse phase-shifting transformers through a high-voltage incoming cabinet 1, a first outgoing cabinet 2, a second outgoing cabinet 3, a first charging current-limiting cabinet 4 and a second charging current-limiting cabinet 5, the phase-shifting transformers are connected with the input end of a rectifier cabinet of a frequency converter, the output direct-current bus voltage of the rectifier cabinet is connected with the input end of an inverter cabinet, and the output end of the inverter cabinet is connected to a 3300V output cabinet through a cable at the bottom of an electric control house pry seat. Each frequency converter comprises a rectifier cabinet and two inverter cabinets. The main controller integrated in the inverter cabinet comprises a group of control panels of inverter power modules. A PLC controller, a gateway and other detection modules are integrally installed in the rectifier cabinet; and remote communication can be established with an upper computer on the upper level of the electric control room through the gateway. Two maintenance access doors are designed and installed in the electric control room, and the upper computer installed on the maintenance access door of the electric control room establishes communication with a main controller and a PLC (programmable logic controller) of a frequency converter in the maintenance access.
The auxiliary equipment system of the electric control room comprises a smoke alarm, a hygrothermograph, an LED lamp and a temperature controller for the phase-shifting transformer. The temperature controller is used for the transformer and is communicated with the PLC, the temperature controller for the transformer can detect the temperature in a transformer chamber in real time, collected winding temperature data are transmitted to the PLC, the PLC judges the collected temperature signals and sends out alarming or tripping signals in time, the load is cut off, and the phase-shifting transformer is prevented from being damaged due to overhigh winding temperature.
The frequency conversion system rectifier cabinet is composed of modularized and high-performance system units and is mainly used for providing stable and reliable direct-current voltage for the voltage type inverter. The main function of the frequency conversion system is to convert 1800V AC power into 4800V DC power through a rectifier bridge inside a rectifier cabinet, and the DC bus voltage is inverted into a frequency and voltage controllable AC power by an inverter cabinet to drive an asynchronous/permanent magnet synchronous motor.
The rectifying unit is composed of four groups of diode assemblies (rectifying modules for short), and is modular in design, simple in structure, high in safety performance and convenient to install and maintain.
The inverter cabinet is used for converting direct-current bus voltage into an alternating-current power supply to drive the asynchronous/permanent magnet synchronous motor, and further controlling the rotating speed and the torque of the motor.
The PLC controller is installed in the rectifier cabinet, and the low-voltage distribution system-MCC cabinet is installed on the side of the frequency converter.
(1) The Duck PLC controller comprises CX8050, KL1408 and KL3464 modules of Beckhoff, a miniature circuit breaker, a terminal block and the like. The Beckhoff series module ensures the logic processing control of the system; the upper computer provides the display, recording, query and storage of system operation, fault data and other important parameters through a friendly human-computer interface.
(2) An MCC cabinet: 12 power distribution circuits are installed: the two ways are power supplies for the fracturing pry power supply, the two ways are 380V/100A standby power supplies, the one way is a 380V/400A standby power supply, the one way is power supplies for the electric control room, the two ways are power supplies for the water cooling system, the two ways are power supplies for the transformer cooling fan, the two ways are power supplies for the frequency converter, and the loop installation mode is fixed.
(3) The 3300V output cabinet comprises a six-phase asynchronous/permanent magnet synchronous motor power supply, a motor speed sensor signal, a motor winding temperature signal, a fracturing pry power supply 380V/100A and a fracturing pry power supply 380V/400A for standby and remote communication, and the emergency stop communication adopts an electric connector form. A single-core electric connector is adopted for a power supply of the asynchronous/permanent magnet synchronous motor, a three-phase four-wire system four-core electric connector is adopted for a 380V power supply, a five-core electric connector is adopted for remote communication, a two-core electric connector is adopted for emergency stop communication, a ten-core electric connector is adopted for a speed sensor, and a twenty-core electric connector is adopted for a temperature signal sensor.
The electric control room realizes the horsepower grade of ten thousand of water in the same size space of the same electric control room equipment, the power density is more concentrated, the occupied area is further reduced, and the electric control room is more suitable for high-power operation in a limited space.
The utility model belongs to shale oil gas exploitation equipment drive field specifically is an automatically controlled room of shale oil gas exploitation equipment electric drive system, including high-pressure incoming line cabinet 1, first outgoing line cabinet 2, second outgoing line cabinet 3, the first current-limiting cabinet 4 that charges, the second current-limiting cabinet 5 that charges, inlet wire contact cabinet 6, first many pulse waves move phase transformer 7, the many pulse waves of second move phase transformer 8, first converter 9, second converter 10, MCC cabinet 11, first water cooling system, second water cooling system, 3300V output cabinet, six looks asynchronous permanent magnet synchronous motor, auxiliary assembly system etc.. The frequency converter comprises a rectifier cabinet and an inverter cabinet; the PLC controller is integrally installed in the rectifier cabinet and comprises detection, communication and control modules, the main control box integrally installed in each inverter cabinet comprises a group of control panels of power modules, and the PLC controller is communicated with the high-voltage wire inlet and outlet cabinet, the upper computer, the rectifier cabinet, the inverter cabinet and the water cooling system; the upper computer of the frequency converter is arranged on the maintenance access door; the auxiliary equipment system comprises a multi-pulse-wave phase-shifting transformer temperature controller, an emergency lamp, an electric heater, a smoke alarm, an LED illuminating lamp, an external illuminating spot lamp and the like. The network side 10KV voltage is sent into a high-voltage incoming cabinet, a bus bar is divided into two paths and sent into a first outgoing line cabinet 2 and a second outgoing line cabinet 3, two outgoing line cabinets respectively enter a first charging current-limiting cabinet 4 and a second charging current-limiting cabinet 5, then the two paths of 10KV network side voltage are respectively converted into four groups of three-phase voltages 1800V and a group of 380V power supplies through two multi-pulse-wave phase-shifting transformers, the 1800V power supplies are supplied to the input end of a rectifier cabinet of a frequency converter, the output direct-current bus voltage of the rectifier cabinet is connected with the input end of an inverter cabinet, the output alternating current of the inverter cabinet provides a power source for a six-phase asynchronous/permanent-magnet synchronous motor, and a transformer auxiliary winding provides a 380V. The electric control room of the electric control system adopting the scheme can reduce the energy consumption cost, and compared with the electric control room with the same power and space size, the electric control room further reduces the occupied area of a well site, so that the power integration density is higher.
Claims (9)
1. An electric control room for high-power shale oil and gas exploitation is characterized by comprising a high-voltage incoming line cabinet (1), a first outgoing line cabinet (2), a second outgoing line cabinet (3), a first charging current limiting cabinet (4), a second charging current limiting cabinet (5), an incoming line interconnection cabinet (6), a first multi-pulse-wave phase-shifting transformer (7), a second multi-pulse-wave phase-shifting transformer (8), a first frequency converter (9), a second frequency converter (10), an MCC cabinet (11), a first water cooling system, a second water cooling system and an output cabinet (14); each frequency converter comprises a rectifier cabinet and two inverter cabinets, and is provided with an upper computer; the main control box integrally installed in each inversion cabinet comprises a group of control panels of power modules, the PLC controller integrally installed in the rectification cabinet comprises detection, communication and control modules, and the PLC controller is communicated with the high-voltage incoming cabinet (1), the first outgoing cabinet (2), the second outgoing cabinet (3), the upper computer of the frequency converter, the rectification cabinet, the inversion cabinet and the water cooling system; each water cooling system consists of a water cooling cabinet and a heat exchanger outer machine, and corresponds to one frequency converter respectively and is used for heat dissipation of the frequency converter water cooling substrate;
the network side 10kV voltage is sent into a high-voltage incoming cabinet (1), two paths of voltage are divided by an internal high-voltage bus bar and sent into a first outgoing line cabinet (2) and a second outgoing line cabinet (3), and then the two paths of voltage respectively enter a first charging current-limiting cabinet (4) and a second charging current-limiting cabinet (5), and then the two paths of 10kV network side voltage are respectively converted into four groups of three-phase voltages 1800V and a group of 380V power supplies through two multi-pulse phase-shifting transformers; the 1800V power supply is supplied to the input end of a rectifier cabinet of the frequency converter, the output direct-current bus voltage of the rectifier cabinet is connected with the input end of an inverter cabinet, and the output end of the inverter cabinet provides a power supply for the six-phase asynchronous/permanent magnet synchronous motor.
2. An electric control room for high-power shale oil and gas exploitation as claimed in claim 1, further comprising an auxiliary equipment system, wherein the auxiliary equipment system comprises a transformer temperature controller, an emergency lamp, a temperature-controlled electric heater and a smoke alarm for detecting the winding of the multi-pulse wave phase-shifting transformer; the MCC cabinet provides 380V/220V power supply for each auxiliary unit.
3. A high power shale oil and gas exploitation electric control room as claimed in claim 2, wherein the transformer temperature controller and the PLC controller establish communication through CAN-open.
4. An electric control room for high-power shale oil and gas exploitation according to any one of claims 1 to 3, wherein the output cabinet (14) is a 3300V output cabinet, twelve sets of electric connectors are used for installing power supply wires of asynchronous/permanent magnet synchronous motors in the output cabinet (14), four sets of electric connectors are used for detecting the winding temperature and speed of the asynchronous/permanent magnet synchronous motors, two electric connectors are used for external remote communication, three-phase four-wire electric connectors for providing 380V/100A power supply for external equipment and one three-phase four-wire electric connector for providing 380V/400A power supply for external equipment.
5. An electric control room for high-power shale oil and gas exploitation as claimed in any one of claims 1 to 3, wherein the rectifier cabinet is a 24-pulse rectifier cabinet, and the internal rectifier bridge forms a 24-pulse rectifier circuit.
6. An electric control room for high-power shale oil and gas exploitation as claimed in any one of claims 1 to 3, wherein the MCC cabinet auxiliary power supply is configured such that power supplied by one path of phase-shifting transformer auxiliary winding alone supplies power to 380V/400A standby equipment, and power supplied by the other path of phase-shifting transformer auxiliary winding supplies power to two sets of auxiliary equipment of an electric drive system; the two auxiliary windings of the phase-shifting transformer are respectively connected to the main circuit breakers of the MCC cabinet (11).
7. The electric control room for high-power shale oil and gas exploitation according to any one of claims 1-3, wherein an electric control 380V power supply loop is made into a dual power supply form.
8. An electric control room for high-power shale oil and gas exploitation as claimed in any one of claims 1 to 3, wherein the electric control room is divided into a plurality of spaces, and the spaces are divided into three spaces including a first space, a second space and a third space from left to right, the first space and the third space are symmetrically arranged, and the first space is provided with a first water cooling system, a first frequency converter (9) and an MCC cabinet (11); the third space is provided with a second water cooling system and a second frequency converter (10); the second space is provided with two transformer chambers, a first charging current-limiting cabinet, a second charging current-limiting cabinet, a first outgoing line cabinet, a second outgoing line cabinet, a high-voltage incoming line cabinet (1) and an incoming line interconnection cabinet (6).
9. The electric control room for high-power shale oil and gas exploitation according to claim 8, wherein the first space is divided into an upper part and a lower part, the first water cooling system is located at the upper part, and the first frequency converter (9) and the MCC cabinet (11) are located at the lower part; the third space is divided into an upper part and a lower part, the second water cooling system is positioned at the upper part, and the second frequency converter (10) is positioned at the lower part; the second space is also divided into an upper part and a lower part, wherein the upper part is provided with two transformer chambers, and the lower part is respectively provided with a first charging current-limiting cabinet, a second charging current-limiting cabinet, a first outgoing line cabinet, a second outgoing line cabinet, a high-voltage incoming line cabinet (1) and an incoming line connection cabinet (6) from left to right; and a maintenance channel is arranged in the electric control room, and an upper computer of the frequency converter is arranged on a maintenance channel door.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921832144.8U CN210724620U (en) | 2019-10-29 | 2019-10-29 | High-power shale oil and gas exploitation electric control room |
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| CN201921832144.8U CN210724620U (en) | 2019-10-29 | 2019-10-29 | High-power shale oil and gas exploitation electric control room |
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| CN210724620U true CN210724620U (en) | 2020-06-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594906A (en) * | 2021-08-09 | 2021-11-02 | 中车永济电机有限公司 | Electric control room for electric drive system equipment of oil field drilling machine |
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2019
- 2019-10-29 CN CN201921832144.8U patent/CN210724620U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594906A (en) * | 2021-08-09 | 2021-11-02 | 中车永济电机有限公司 | Electric control room for electric drive system equipment of oil field drilling machine |
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