CN113922360A - Fracturing well site power supply system - Google Patents
Fracturing well site power supply system Download PDFInfo
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- CN113922360A CN113922360A CN202111047046.5A CN202111047046A CN113922360A CN 113922360 A CN113922360 A CN 113922360A CN 202111047046 A CN202111047046 A CN 202111047046A CN 113922360 A CN113922360 A CN 113922360A
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- power supply
- well site
- fracturing well
- site operation
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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
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
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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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- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The application discloses fracturing well site power supply system to can improve fracturing well site operating efficiency, reduce the energy consumption when adapting to the undulant operating mode of load power. The fracturing wellsite power supply system comprises: a plurality of power supplies; the input end of the power distribution equipment is connected with each power supply, the output end of the power distribution equipment is connected to fracturing well site operation equipment, and the power distribution equipment is used for transmitting electric energy output by the power supply to the fracturing well site operation equipment and monitoring load state information of the started power supply; the first control module is respectively connected with each power supply, the power distribution equipment and the fracturing well site operation equipment and used for determining and starting a first target power supply in the plurality of power supplies based on the upper limit of the total power consumption of the fracturing well site operation equipment and the upper limit of the power supply of each power supply before fracturing well site operation, and determining and stopping a second target power supply in the started power supplies based on the load state information of the started power supplies at the interval of fracturing well site operation.
Description
Technical Field
The application relates to the field of petroleum equipment, in particular to a power supply system for a fracturing well site.
Background
In the operation processes of drilling, cementing, fracturing and increasing production in the oilfield field, electric equipment for field operation needs to be supplied with electric power, so that a corresponding power supply system needs to be matched. At present, the existing power supply system mainly adopts a single-power high-power generator or a power grid and generator combination mode to supply power, the former can meet the maximum power demand of a fracturing well site, but the fracturing well site operation is usually intermittent operation, the power demand of an operation gap is small, and in the process, a single-machine high-power generator still needs to consume a large amount of fuel under the idling state, so that the efficiency is low and the economical efficiency is poor; although the latter can adapt to the working condition of load power fluctuation, the latter is lack of uniform allocation, so that the generator is in a standby mode with high energy consumption and low output, and the difficulty of operation and use is increased.
Therefore, a power supply scheme which can adapt to the operation condition of load power fluctuation, improve the operation efficiency of the fracturing well site and reduce the energy consumption is needed.
Disclosure of Invention
The embodiment of the application provides a fracturing well site power supply system to can improve fracturing well site operating efficiency, reduce the energy consumption when adapting to the fluctuating operating mode of load power.
In order to achieve the above purpose, the following technical solutions are adopted in the embodiments of the present application:
the embodiment of the application provides a fracturing well site power supply system, includes:
a plurality of power supplies;
the power distribution equipment is provided with an input end and an output end, the input end is respectively connected with each power supply, the output end is connected to fracturing well site operation equipment, and the power output by the power supply is transmitted to the fracturing well site operation equipment, and the load state information of the enabled power supply is monitored;
the first control module is respectively connected with each power supply, the power distribution equipment and the fracturing well site operation equipment and used for acquiring the upper limit of the total power consumption of the fracturing well site operation equipment and the upper limit of the power supply of each power supply before fracturing well site operation, determining and starting a first target power supply in the plurality of power supplies based on the upper limit of the total power consumption and the upper limit of the power supply of each power supply, and determining and stopping a second target power supply in the started power supplies based on the load state information of the started power supplies at the interval of fracturing well site operation.
Optionally, the first control module is specifically configured to:
before fracturing well site operation, the sum of the upper power supply limits of the activated power supplies is not less than the upper total power consumption limit, and a first target power supply in the plurality of power supplies is determined and started based on the upper power supply limits of the power supplies and the corresponding activation priorities.
Optionally, the load status information includes a load rate and a duration corresponding to the load rate
The first control module is specifically configured to:
determining, from the enabled power sources, power sources with a load rate continuously lower than a first preset load rate for a time period exceeding a first preset time period as first candidate power sources at a fracture well site operation interval;
shutting down the first candidate power source if an upper power usage limit required for fracturing a wellsite operation gap does not exceed a first upper remaining power amount limit, wherein the first upper remaining power amount limit is the sum of upper power amount limits of power sources other than the first candidate power source in the enabled power sources.
Optionally, the power distribution equipment is further used for monitoring the current total power consumption of the fracturing well site operation equipment and the current power supply amount of the enabled power supply during the fracturing well site operation;
the first control module is further configured to:
determining and starting a standby power supply in the non-activated power supplies based on the upper limit of the power supply of the non-activated power supplies in the plurality of power supplies when the ratio of the current total power consumption of the fracturing well site operation equipment to the sum of the current power supplies of the activated power supplies exceeds a first preset ratio during the fracturing well site operation.
Optionally, the first control module is further configured to:
determining a power supply with a load rate continuously lower than a second preset load rate for a time period exceeding a second preset time period from the enabled power supplies as a second candidate power supply during the operation of the fracturing well site;
and if the current total power consumption of the fracturing well site operation equipment does not exceed a second residual power supply upper limit, shutting down the second candidate power supply, wherein the second residual power supply upper limit is the sum of the power supply upper limits of the power supplies except the second candidate power supply in the activated power supplies.
Optionally, the first control module is specifically configured to:
when the number of the second candidate power sources is multiple, sequentially aiming at a single second candidate power source based on the starting priority of each second candidate power source, and if the current total power consumption of the fracturing well site operation equipment does not exceed a second residual power supply upper limit, shutting down the second candidate power source.
Optionally, the first control module is further configured to:
outputting a displacement reduction instruction to the fracturing wellsite operation equipment based on a ratio of a current total power consumption of the fracturing wellsite operation equipment to a sum of current power supply amounts of the enabled power supplies when the ratio exceeds a second preset ratio during fracturing wellsite operation, wherein the displacement reduction instruction is used for instructing the fracturing wellsite operation equipment to reduce output displacement.
Optionally, the power supply comprises:
at least one generator set;
the parallel cabinet is respectively connected with the at least one generator set and the power distribution equipment and is used for conducting or breaking the connection between the at least one generator set and the power distribution equipment;
and the second control module is respectively connected with the at least one generator set, the parallel cabinet and the first control module and is used for controlling the at least one generator set to be started or stopped and controlling the parallel cabinet to work under the control of the first control module.
Optionally, the at least one genset is a gas turbine genset.
Optionally, the number of generator sets is at least two, at least two of the generator sets being of different types.
Optionally, the power supply is also in the form of one or more of the following combinations: a power grid and/or an energy storage device;
the output end of the power grid is connected with the power distribution equipment, and the energy storage device is respectively connected with other power supplies and the power distribution equipment.
Optionally, the power distribution equipment comprises a switch cabinet and an electric signal collector, an input end of the switch cabinet is connected with each power supply, an output end of the switch cabinet is connected with one end of the electric signal collector, the other end of the electric signal collector is connected with the fracturing well site operation equipment, and an output end of the electric signal collector is connected with the first control module;
the electric signal collector is used for monitoring the operating parameters of the started power supply and determining the load state information of the started power supply based on the operating parameters of the started power supply;
the switch cabinet is used for switching on or switching off the connection between the power supply and the electric signal collector.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
by arranging the power distribution equipment and the plurality of power supplies, connecting the input end of the power distribution equipment with each power supply respectively, and connecting the output end of the power distribution equipment with the fracturing well site operation equipment, the power distribution equipment can not only transmit electric energy output by each power supply to the fracturing well site operation equipment to provide electric energy for fracturing well site operation, but also monitor the load state information of the started power supplies; the first control module is arranged and is respectively connected with each power supply, the power distribution equipment and the fracturing well site operation equipment, the first control module obtains the total power consumption upper limit of the fracturing well site operation equipment and the power supply upper limit of each power supply in advance before the fracturing well site operation, and the power supplies are started based on the total power consumption upper limit of the fracturing well site operation equipment and the power supply upper limit of each power supply, so that the high-power consumption requirement in the fracturing well site operation process can be met; and in the fracturing well site operation interval, the power consumption required in the stage is less, and based on the load state information of the started power supply, part of the started power supply is shut down, so that the low-power consumption requirement of the fracturing well site operation interval can be met, the started power supply is ensured to run in a high-efficiency power generation mode, the standby energy consumption of the power supply is reduced, and the energy consumption of the whole fracturing well site operation interval is reduced. In addition, adopt a plurality of powers for first control module can open and stop corresponding power to different operating modes, satisfies the power consumption demand under the different operating modes, effectively solves the weak problem of fracturing well site basis electric wire netting, and compares in the scheme of current adoption single generator, reduces the dependence to single power, when arbitrary power goes wrong, still can provide the electric energy by other power in order to satisfy the emergent power consumption demand in scene, thereby improves the power consumption security of fracturing well site operation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic diagram illustrating a configuration of a power supply system for a fracturing wellsite provided in an exemplary embodiment of the present application;
FIG. 2 is a schematic diagram illustrating a configuration of power distribution equipment in a power supply system for a frac wellsite according to an exemplary embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a configuration of frac wellsite operations equipment according to an exemplary embodiment of the present application.
Description of reference numerals:
1-power supply, 11-generator set, 12-parallel cabinet, 13-second control module,
2-distribution equipment, 21-switch cabinet, 22-electric signal collector, 23-transformer,
3-a first control module, 4-a power grid and 5-an energy storage device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein. In the present specification and claims, "and/or" indicates at least one of the connected objects, and the character "/" generally indicates that the preceding and following related objects are in an "or" relationship.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a schematic diagram of a power supply system for a fracturing wellsite provided in an exemplary embodiment of the present application includes a plurality of power sources 1, a power distribution device 2, and a first control module 3.
Wherein, distribution equipment 2 has input and output, and distribution equipment 2's input is connected with each power 1 respectively, and distribution equipment 2's output is connected to fracturing well site operation equipment. The first control module 3 is respectively connected with each power supply 1, the power distribution equipment 2 and the fracturing well site operation equipment.
The power supply 1 is used to supply electric power. In the fracturing wellsite power supply system of the embodiment of the present application, each power source 1 may have any suitable structure, which is not particularly limited in the embodiment of the present application. As shown in fig. 1, in an alternative embodiment, the power supply 1 may include at least one power generator set 11, a cabinet 12, and a second control module 13.
The single generator set 11 may be of any suitable type, and the embodiment of the present application is not particularly limited thereto. Optionally, at least one of the generator sets 11 is a gas turbine generator set. Optionally, the number of generator sets is at least two, at least two generator sets 11 being of different type.
Alternatively, the single generator set 11 may comprise an internal combustion engine and/or an electric generator or the like. Specifically, the internal combustion engine may include, for example, but is not limited to, a diesel engine, a gas turbine engine, a hydrogen fueled engine, and the like, the fuel type of which may be in the form of a combination of one or more of the following types: fuel oil, natural gas, hydrogen, mixtures containing hydrogen, and the like.
And the cabinet 12 is respectively connected with at least one generator set 11 and the distribution equipment 2, and can be used for conducting or breaking the connection between the at least one generator set 11 and the distribution equipment 2 so as to realize grid connection between the power supplies 1.
The second control module 13 is connected to the at least one generator set 11, the parallel cabinet 12 and the first control module 3, and is configured to control the at least one generator set 11 to be turned on or off and the parallel cabinet 12 to be operated under the control of the first control module 3.
In practical applications, any suitable device with a control function may be adopted as the second control module 13, and this is not particularly limited in this embodiment of the present application. Illustratively, the second control module 13 may include, but is not limited to, an input unit for receiving the power output by each of the generator sets 11 in the power source 1, a processor for determining the operating status (whether to be activated or not), electrical signal parameters (such as current, voltage, frequency, power, etc.), required power supply amount, actual power supply amount, flow value, etc. of each of the generator sets 11 according to the power output by each of the generator sets 11, and activating or deactivating at least one of the generator sets 11 according to a control instruction from the first control module 3, a communication unit for displaying the operating status, electrical signal parameters, required power supply amount, actual power supply amount, flow value, etc. of each of the generator sets 11, a storage unit for establishing a communication connection (shown as a dotted line in fig. 1) with the first control module 3, and receives the control instruction from the first control module 3 through the established communication connection and feeds back information such as the working state, the electric signal parameter, the required power supply amount, the actual power supply amount, the flow value and the like of each generator set 11 to the first control module 3.
It should be noted that, in practical applications, the power supply 1 may adopt one or a combination of multiple forms such as a vehicle-mounted type, a movable skid-mounted type, a semi-mounted type, and the like, and this is not particularly limited in this embodiment of the application.
It can be understood that, in the power supply 1 of the above embodiment, by using at least one generator set 11, a parallel cabinet 12 and a second control module 13, the parallel cabinet 12 is respectively connected to the at least one generator set 11 and the power distribution equipment 2, and the second control module 13 is respectively connected to the at least one generator set 11, the parallel cabinet 12 and the first control module 3, so that not only can the first control module 3 more flexibly control parallel operation among the power supplies 1, but also the first control module 3 can control start and stop of each generator set 11 in a single power supply 1, thereby more flexibly adjusting the power supply capability of the single power supply 1.
In the fracturing wellsite power supply system of the embodiment of the present application, the power distribution device 2 may have any suitable structure, which is not particularly limited in the embodiment of the present application. In an alternative embodiment, as shown in fig. 2, the power distribution equipment 2 may include a switch cabinet 21 and an electrical signal collector 22, wherein an input end of the switch cabinet 21 is connected to each power source 1, an output end of the switch cabinet 21 is connected to one end of the electrical signal collector 22, the other end of the electrical signal collector 22 is connected to the fracturing well site operation equipment, and an output end of the electrical signal collector 22 is connected to the first control module 3.
The switch cabinet 21 is used to turn on or off the connection between the power supply 1 and the electric signal collector 22. Alternatively, the switch cabinet 21 may contain switches or the like in one-to-one correspondence with the plurality of power sources 1. Of course, those skilled in the art should understand that the switch cabinet 21 may further include more components according to actual needs, and the embodiment of the present application is not particularly limited thereto.
It can be understood that the power distribution equipment 2 has a monitoring function on respective operating parameters of the power supply 1 and fracturing well site operation equipment by additionally arranging the electric signal collector 22 in the power distribution equipment 2, and powerful data support is provided for power supply control in the fracturing well site operation process and operation gaps; by additionally arranging the switch cabinet 21 in the power distribution equipment 2, the grid connection between the power sources 1 can be controlled more conveniently and flexibly.
In another alternative embodiment, as shown in fig. 2, the power distribution equipment 2 may further include a transformer 23, an input end of the transformer 23 is connected to each power source 1, and an output end of the transformer 23 is connected to the fracturing wellsite operation equipment, so that the electric energy output by each power source 1 can be converted into a voltage suitable for the fracturing wellsite operation equipment to ensure that the fracturing wellsite operation equipment can work normally.
Of course, those skilled in the art should understand that the power distribution apparatus 2 may further include more devices required in the grid connection and power distribution process according to actual needs, and this embodiment of the present application is not particularly limited thereto.
In the power supply system for a fracturing well site of the embodiment of the present application, any suitable device having a control function may be adopted as the first control module 3, and this is not particularly limited in the embodiment of the present application. For example, the first control module 3 may include, but is not limited to, an input unit, a communication unit, a processor, a storage unit, a display unit, and the like, and functions of the respective parts are similar to those of the corresponding parts in the second control module 13, and are not described herein again.
In the embodiments of the present application, fractured wellsite operations equipment refers to various types of equipment required during a fractured wellsite operation, and may include, for example and without limitation: the device comprises a frequency converter device, an electric drive fracturing device, a high-pressure manifold device, an instrument device, a liquid supply and distribution device, a liquid tank, a sand mixing device, a sand storage and adding device and the like. In practical application, the first control module 3 may be deployed in an instrument device, so as to save the space occupied by the fractured well site power supply system.
In order to reduce the dependence on a single power supply, when any power supply is in trouble, the other power supply 1 can still provide electric energy to meet the site emergency electricity demand, so as to improve the electricity safety of the fracturing well site operation, in another embodiment, the power supply in the fracturing well site operation equipment of the embodiment can also be in one or more of the following forms: the power distribution system comprises a power grid 4 and/or an energy storage device 5, wherein the output end of the power grid 4 is connected with the power distribution equipment 2, and the energy storage device 5 is respectively connected with other power sources 1 and the power distribution equipment 2.
Based on the structure of the power supply system for the fracturing well site, the power supply system for the fracturing well site of the embodiment of the application is described in detail below in combination with the operation process of the fracturing well site.
Specifically, the power distribution equipment 2 may be used to deliver power output by the power supply 1 to the fracturing wellsite equipment, as well as monitor load status information of the enabled power supply 1. The first control module 3 may be configured to obtain a total power usage upper limit of the fractured well site operation equipment and a power supply upper limit of each power supply 1 before fracturing the well site operation, determine and activate a first target power supply of the plurality of power supplies 1 based on the total power usage upper limit of the fractured well site operation equipment and the power supply upper limit of each power supply 1, and determine and deactivate a second target power supply of the activated power supplies 1 based on load status information of the activated power supplies 1 at a fracture well site operation interval.
Wherein the upper limit of the total power consumption of the fracturing well site operating equipment is used for representing the maximum consumption requirement of the fracturing well site operating equipment. Alternatively, the upper limit of the total power consumption of the fractured well site operating equipment may be manually input to the first control module 3 by an operator according to actual operating conditions, or the first control module 3 may determine the upper limit of the total power consumption of the fractured well site operating equipment according to the target total displacement information and the target upper output pressure limit of the fractured well site operation. It should be noted that the manner of determining the total power consumption according to the target total displacement information and the target output pressure of the fracturing well site operation may be determined in various manners known to those skilled in the art, and the embodiment of the present application is not limited in this respect.
The upper limit of the power supply capacity of the power supply 1 is used to characterize the maximum power supply capacity of the power supply 1. Alternatively, for a single power supply 1, the upper limit of the power supply amount of the power supply 1 may be manually input into the first control module 3 by an operation according to the actual situation of the power supply 1, or the first control module 3 may determine the upper limit of the power supply amount of the power supply 1 according to parameters such as the type and the power generation amount of the power supply 1, and the specific determination manner may adopt various technical means known to those skilled in the art.
During specific implementation, before fracturing well site operation, if the upper limit of the total power consumption of fracturing well site operation equipment is large, the first control module 3 can start more power supplies 1 according to the upper limit of the power supply of each power supply 1 so as to meet the requirement of high-power consumption in the fracturing well site operation process; on the contrary, if the total power consumption upper limit of the fracturing well site operation equipment is smaller, the first control module 3 can start fewer power supplies 1 according to the power supply upper limit of each power supply 1, so as to adapt to the low-power consumption working condition of the fracturing well site operation and reduce energy consumption.
To further reduce energy consumption while meeting the high power demand of a fractured well site operation, more specifically, in an alternative embodiment, the first control module 3 may be specifically configured to determine and activate a first target power supply of the plurality of power supplies 1 based on the upper power supply of each power supply 1 and the corresponding activation priority, before the fractured well site operation, with the sum of the upper power supply limits of the activated power supplies 1 being not less than the upper total power consumption limit of the fractured well site operation equipment as a target. Wherein, for a single power supply 1, the activation priority corresponding to the power supply 1 is used to characterize the activation order of the power supply 1, for example, the power supply 1 with higher activation priority is activated before the power supply 1 with lower activation priority. In practical applications, the activation priority corresponding to the power supply 1 may be preset by an operator according to actual needs, which is not specifically limited in the embodiment of the present application, for example, the activation priority corresponding to the power supply 1 with low emission and high economy may be set to a higher level so as to be preferentially activated.
For example, the first control module 3 may, according to the enabling priority corresponding to each power supply 1, first use the power supply 1 with the highest enabling priority as the first target device, if the sum of the power supply upper limits of all currently determined first target power supplies is still smaller than the total power consumption upper limit of the fracturing well site operation device, continue to select the power supply 1 with the next enabling priority as the first target device, and so on until the sum of the power supply upper limits of all currently determined first target power supplies is not smaller than the total power consumption upper limit of the fracturing well site operation device. Thus, the first control module 3 may determine a first target power source of the plurality of power sources 1.
In the operation interval of the fracturing well site, because the required power consumption is small, the first control module 3 can shut down the power supply 1 which is continuously in the low-load state according to the load state information of each started power supply 1, so as to ensure that the started power supplies 1 all run in a high-efficiency power generation mode, particularly reduce the standby power consumption of the power supply 1 and achieve the effect of reducing the energy consumption.
To further ensure that the activated power supplies 1 are all operated in an efficient and economical manner to further reduce the energy consumption of the fractured wellsite operation interval while meeting the power demand of the fractured wellsite operation interval, more specifically, in an alternative embodiment, the first control module 3 may be configured to determine, from the activated power supplies 1, the power supplies 1 whose load rates are continuously lower than the first preset load rate for more than a first preset time period as first candidate power supplies, and to shut down the first candidate power supplies if the upper power consumption limit required for the fractured wellsite operation interval does not exceed a first upper remaining power supply limit, wherein the first upper remaining power supply limit is the sum of the power supplies of the activated power supplies 1 except the first candidate power supply.
It should be noted that, if the number of the first candidate power sources is multiple, the first control module 3 may sequentially target a single first candidate power source according to the activation priorities corresponding to the respective first candidate power sources, for example, in order of the activation priorities from low to high, and shut down the first candidate power source if the upper limit of the power consumption required for fracturing the well site operation interval does not exceed the sum of the upper limits of the power supply of the remaining activated power sources except the first candidate power source (i.e., the first upper limit of the remaining power supply).
In addition, both the first preset load rate and the first preset duration can be set according to actual operation needs, for example, the first preset load rate can be set to 20%, and the specific values of the first preset load rate and the first preset duration are not limited in the embodiment of the present application.
In the fracturing well site power supply system provided by the embodiment of the application, by arranging the power distribution equipment 2 and the plurality of power sources 1, connecting the input end of the power distribution equipment 2 with each power source 1 respectively, and connecting the output end of the power distribution equipment 2 to fracturing well site operation equipment, the power distribution equipment 2 can not only transmit electric energy output by each power source 1 to the fracturing well site operation equipment to provide electric energy for fracturing well site operation, but also monitor the load state information of the started power source 1; the first control module 3 is arranged and is respectively connected with each power supply 1, the power distribution equipment 2 and the fracturing well site operation equipment, the first control module 3 obtains the total power consumption upper limit of the fracturing well site operation equipment and the power supply upper limit of each power supply 1 in advance before fracturing well site operation, the power supplies 1 are started based on the total power consumption upper limit of the fracturing well site operation equipment and the power supply upper limit of each power supply 1, and the requirement of high-power consumption in the fracturing well site operation process can be met; and in the fracturing well site operation interval, the power consumption required in the stage is less, and based on the load state information of the started power supply 1, part of the power supplies 1 in the started power supply 1 are shut down, so that the low-power consumption requirement of the fracturing well site operation interval can be met, the started power supplies 1 are ensured to operate in a high-efficiency power generation mode, the standby energy consumption of the power supplies 1 is reduced, and the energy consumption of the whole fracturing well site operation interval is reduced. In addition, adopt a plurality of power 1 for first control module 3 can open and stop corresponding power 1 to different operating modes, satisfy the power consumption demand under the different operating modes, effectively solve 4 weak problems of fracturing well site basis electric wire netting, and compare in the scheme of current adoption single generator, reduce the dependence to single power, when arbitrary power goes wrong, still can provide the electric energy by other power 1 in order to satisfy the emergent power consumption demand in scene, thereby improve the power consumption security of fracturing well site operation.
In order to better satisfy the power demand during the operation of the fracturing well site, in another embodiment, the power distribution equipment 2 can also be used for monitoring the current total power consumption of the fracturing well site operation equipment and the current power supply amount of the enabled power supply 1 during the operation of the fracturing well site. The first control module 3 may be further configured to determine and activate a backup power source of the non-activated power sources 1 based on an upper limit of the power supply amount of the non-activated power sources 1 of the plurality of power sources 1 when a ratio of a current total power consumption of the fracturing well site operation equipment to a sum of the current power supply amounts of the activated power sources 1 exceeds a first preset ratio during the fracturing well site operation.
It should be noted that the first preset ratio may be set according to actual operation needs, for example, the first preset ratio may be set to 80%, and the embodiment of the present application does not limit a specific numerical value of the first preset ratio.
For the total power consumption of the fracturing well site operation equipment and the power supply amount of the power supply 1, in an optional embodiment, the power distribution equipment 2 may monitor parameters such as voltage, current, frequency and power of the fracturing well site operation equipment through a built-in electric signal collector 22 (such as a current transformer, a voltage transformer and other sensors), and determine the current power consumption of the fracturing well site operation equipment according to the monitored parameters. Similarly, the power distribution device 2 may also monitor parameters such as voltage, current, frequency, and power output by each enabled power source 1 through the built-in electric signal collector 22, and determine the current power supply amount of each enabled power source 1 according to the monitored parameters.
Of course, it will be understood by those skilled in the art that other various ways known to those skilled in the art may be used to monitor the current total power usage of the fractured wellsite operation equipment and the current power supply of the power supply 1, which is not specifically limited by the embodiment of the present application.
For the determination and the start of the standby power, in an alternative embodiment, the first control module 3 may select, from the inactive power sources 1, the power source 1 with the upper limit of the power supply amount matching with a ratio difference as the standby power source, where the ratio difference is a difference between a ratio of a sum of current power supply amounts of the active power sources 1 and a first preset ratio. For example, the corresponding required power consumption may be determined according to the current ratio difference according to the preset corresponding relationship between the ratio difference and the required power consumption, and then the power source 1 with the upper limit not less than the required power consumption may be selected from the inactive power sources 1 as the standby power source.
In another alternative embodiment, the first control module 3 may also select one or more power supplies 1 with higher activation priority from the non-activated power supplies 1 as the backup power supply according to the activation priority corresponding to each non-activated power supply 1.
Of course, it should be understood by those skilled in the art that, besides the above-mentioned embodiments, the standby power in the inactive power source 1 can be determined and activated in various ways known to those skilled in the art, and this is not particularly limited in the examples of the present application.
It can be understood that, in the above embodiment, during the operation of the fracturing well site, the current total power consumption of the fracturing well site operation equipment and the current upper limit of the power supply 1 which is enabled are monitored by the power distribution equipment 2, and when the ratio of the current total power consumption of the fracturing well site operation equipment to the current power supply of the power supply 1 which is enabled exceeds a certain value, the first control module 3 determines and enables the standby power supply, so that sufficient electric energy can be provided for the fracturing well site operation equipment when the current total power consumption of the fracturing well site operation equipment is too high, and the normal implementation of the fracturing well site operation is prevented from being influenced by insufficient power supply.
In order to ensure that each of the enabled power sources 1 is operated in a high-efficiency power generation mode while meeting the power demand during the fracturing well site operation to reduce the energy consumption in the process, in another embodiment, the first control module 3 may be further configured to determine, from the enabled power sources 1, the power sources 1 with the load rate continuously lower than the second preset load rate for a duration longer than a second preset duration as second candidate power sources during the fracturing well site operation, and to shut down the second candidate power sources if the total current power consumption of the fracturing well site operation equipment does not exceed a second upper limit of the remaining power amount, wherein the second upper limit of the remaining power amount is the sum of the upper limits of the power amounts of the enabled power sources 1 except the second candidate power source.
In specific implementation, if the number of the second candidate power sources is multiple, the first control module 3 may sequentially target the single second candidate power sources based on the activation priorities of the respective second candidate power sources, for example, in order of the activation priorities from low to high, and shut down the second candidate power sources if the current total power consumption of the fracturing wellsite operation equipment does not exceed the sum of the upper power supply limits of the rest of the activated power sources 1 except the second candidate power source (i.e., the second upper remaining power supply limit).
It should be noted that the second preset load rate and the second preset time period may be set according to actual needs, for example, the second preset load rate may be set to 20%, and the specific values of the second preset load rate and the second preset time period are not limited in this embodiment of the application.
It can be understood that, through the fracturing well site power supply system of the embodiment, the power supply 1 which is continuously in a low-load state in the fracturing well site operation process can be turned off while the power demand in the fracturing well site operation process is met, so that the started power supply 1 can be ensured to be in a high-efficiency power generation mode, and the effect of reducing the energy consumption in the fracturing well site operation process is achieved.
In order to ensure the stability of the whole power supply system of the fracturing well site and improve the safety of the operation process of the fracturing well site, in another embodiment, the first control module 3 can be further used for outputting a displacement reduction instruction to the fracturing well site operation equipment based on the ratio of the sum of the current total power consumption of the fracturing well site operation equipment and the current power supply quantity of the enabled power supply 1 when the ratio exceeds a second preset ratio in the operation process of the fracturing well site, wherein the displacement reduction instruction is used for instructing the fracturing well site operation equipment to reduce the output displacement.
Because the higher the output displacement of the fracturing well site operation equipment is, the higher the total power consumption of the fracturing well site operation equipment is, in an optional embodiment, a corresponding relation between the ratio and the output displacement of the fracturing well site operation equipment can be preset, a specific numerical value of the output displacement to be reduced is determined based on the corresponding relation and the currently determined ratio, and then a corresponding displacement reduction command is generated based on the specific numerical value and sent to the fracturing well site operation equipment so as to control the fracturing well site operation equipment to reduce the output displacement of the corresponding numerical value.
In practical applications, the number of the fracturing well site operation devices may be multiple, such as the fracturing device 1, the fracturing device 2, the sand mulling device, the blending device and the like shown in fig. 1, in which case, the first control module 3 may output corresponding displacement reduction commands to the fracturing well site operation devices, and the displacement of each fracturing well site operation device is reduced according to the received displacement reduction commands.
It should be noted that the second preset ratio may be set according to actual needs, for example, the second preset ratio may be set to be an appropriate value larger than the first preset ratio, and the embodiment of the present application does not limit the specific value of the second preset ratio.
It can be understood that in the fracturing well site power supply system of the above embodiment, when the ratio of the current total power consumption of the fracturing well site operation equipment in the fracturing well site operation to the sum of the current power supply of the enabled power supply 1 exceeds a certain value, the first control module 3 controls the fracturing well site operation equipment to reduce the output displacement of the fracturing well site operation equipment, so that the total power consumption of the fracturing well site operation equipment can be reduced, and the problem that the stability of the whole fracturing well site power supply system is affected due to the overhigh total power consumption of the fracturing well site operation equipment is avoided.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
In short, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. One typical implementation device is a computer.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
Claims (12)
1. A frac wellsite power supply system, comprising:
a plurality of power supplies;
the power distribution equipment is provided with an input end and an output end, the input end is respectively connected with each power supply, the output end is connected to fracturing well site operation equipment, and the power output by the power supply is transmitted to the fracturing well site operation equipment, and the load state information of the enabled power supply is monitored;
the first control module is respectively connected with each power supply, the power distribution equipment and the fracturing well site operation equipment and used for acquiring the upper limit of the total power consumption of the fracturing well site operation equipment and the upper limit of the power supply of each power supply before fracturing well site operation, determining and starting a first target power supply in the plurality of power supplies based on the upper limit of the total power consumption and the upper limit of the power supply of each power supply, and determining and stopping a second target power supply in the started power supplies based on the load state information of the started power supplies at the interval of fracturing well site operation.
2. The frac wellsite power supply system of claim 1, wherein the first control module is further configured to:
before fracturing well site operation, the sum of the upper power supply limits of the activated power supplies is not less than the upper total power consumption limit, and a first target power supply in the plurality of power supplies is determined and started based on the upper power supply limits of the power supplies and the corresponding activation priorities.
3. The frac wellsite power supply system of claim 1, wherein the load status information comprises a load rate and a duration corresponding to the load rate
The first control module is specifically configured to:
determining, from the enabled power sources, power sources with a load rate continuously lower than a first preset load rate for a time period exceeding a first preset time period as first candidate power sources at a fracture well site operation interval;
shutting down the first candidate power source if an upper power usage limit required for fracturing a wellsite operation gap does not exceed a first upper remaining power amount limit, wherein the first upper remaining power amount limit is the sum of upper power amount limits of power sources other than the first candidate power source in the enabled power sources.
4. The frac wellsite power supply system of claim 1, wherein the power distribution equipment is further configured to monitor a current total power usage of the frac wellsite operations equipment and a current power usage of the enabled power source during a frac wellsite operation;
the first control module is further configured to:
determining and starting a standby power supply in the non-activated power supplies based on the upper limit of the power supply of the non-activated power supplies in the plurality of power supplies when the ratio of the current total power consumption of the fracturing well site operation equipment to the sum of the current power supplies of the activated power supplies exceeds a first preset ratio during the fracturing well site operation.
5. The frac wellsite power system of claim 4, wherein the first control module is further configured to:
determining a power supply with a load rate continuously lower than a second preset load rate for a time period exceeding a second preset time period from the enabled power supplies as a second candidate power supply during the operation of the fracturing well site;
and if the current total power consumption of the fracturing well site operation equipment does not exceed a second residual power supply upper limit, shutting down the second candidate power supply, wherein the second residual power supply upper limit is the sum of the power supply upper limits of the power supplies except the second candidate power supply in the activated power supplies.
6. The frac wellsite power supply system of claim 5, wherein the first control module is further configured to:
when the number of the second candidate power sources is multiple, sequentially aiming at a single second candidate power source based on the starting priority of each second candidate power source, and if the current total power consumption of the fracturing well site operation equipment does not exceed a second residual power supply upper limit, shutting down the second candidate power source.
7. The frac wellsite power system of claim 4, wherein the first control module is further configured to:
outputting a displacement reduction instruction to the fracturing wellsite operation equipment based on a ratio of a current total power consumption of the fracturing wellsite operation equipment to a sum of current power supply amounts of the enabled power supplies when the ratio exceeds a second preset ratio during fracturing wellsite operation, wherein the displacement reduction instruction is used for instructing the fracturing wellsite operation equipment to reduce output displacement.
8. The frac wellsite power supply system of claim 1, wherein the power source comprises:
at least one generator set;
the parallel cabinet is respectively connected with the at least one generator set and the power distribution equipment and is used for conducting or breaking the connection between the at least one generator set and the power distribution equipment;
and the second control module is respectively connected with the at least one generator set, the parallel cabinet and the first control module and is used for controlling the at least one generator set to be started or stopped and controlling the parallel cabinet to work under the control of the first control module.
9. The frac wellsite power system of claim 8, wherein the at least one power unit is a gas turbine power unit.
10. The frac wellsite power supply system of claim 8, wherein the number of generator sets is at least two, at least two of the generator sets being of a different type.
11. The frac wellsite power supply system of claim 8, wherein the power source is further in the form of one or more of the following combinations: a power grid and/or an energy storage device;
the output end of the power grid is connected with the power distribution equipment, and the energy storage device is respectively connected with other power supplies and the power distribution equipment.
12. The fracturing well site power supply system of any one of claims 1 to 11, wherein the power distribution equipment comprises a switch cabinet and an electric signal collector, wherein the input end of the switch cabinet is respectively connected with each power supply, the output end of the switch cabinet is connected with one end of the electric signal collector, the other end of the electric signal collector is connected with the fracturing well site operation equipment, and the output end of the electric signal collector is connected with the first control module;
the electric signal collector is used for monitoring the operating parameters of the started power supply and determining the load state information of the started power supply based on the operating parameters of the started power supply;
the switch cabinet is used for switching on or switching off the connection between the power supply and the electric signal collector.
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| CN202310962999.7A CN117039858A (en) | 2021-09-07 | 2021-09-07 | Fracturing well site power supply system |
| CN202310962990.6A CN117039857A (en) | 2021-09-07 | 2021-09-07 | Fracturing well site power supply system |
| CN202111047046.5A CN113922360B (en) | 2021-09-07 | 2021-09-07 | Fracturing well site power supply system |
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| CN202111047046.5A CN113922360B (en) | 2021-09-07 | 2021-09-07 | Fracturing well site power supply system |
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| CN202310962990.6A Division CN117039857A (en) | 2021-09-07 | 2021-09-07 | Fracturing well site power supply system |
| CN202310962999.7A Division CN117039858A (en) | 2021-09-07 | 2021-09-07 | Fracturing well site power supply system |
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| CN202310962999.7A Pending CN117039858A (en) | 2021-09-07 | 2021-09-07 | Fracturing well site power supply system |
| CN202111047046.5A Active CN113922360B (en) | 2021-09-07 | 2021-09-07 | Fracturing well site power supply system |
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Also Published As
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|---|---|
| CN117039858A (en) | 2023-11-10 |
| CN117039857A (en) | 2023-11-10 |
| CN113922360B (en) | 2023-08-18 |
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