Energy management method, system and device and storage medium

Abstract

The invention discloses an energy management method, system and device and a storage medium, the method is used for distributing braking energy generated by a first oil extraction device and a second oil extraction device, and the method comprises the steps that under the first environment condition, a control module of the first oil extraction device and a control module of the second oil extraction device are heated; in the first time period, the first oil extraction equipment and the second oil extraction equipment are in the working state, braking energy generated by the first oil extraction equipment is distributed to a control module of the first oil extraction equipment for heating, and braking energy generated by the second oil extraction equipment is distributed to a control module of the second oil extraction equipment for heating; and in the second time period, the first oil extraction equipment is in the working state, the second oil extraction equipment is in the non-working state, and braking energy generated by the first oil extraction equipment is used for heating the control module of the first oil extraction equipment and the control module of the second oil extraction equipment. Through the mode, the heating cost can be reduced while the control module is heated.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of energy, in particular to an energy management method, system, device and storage medium. BACKGROUND

[0002] In cold regions, the ambient temperature of energy exploitation is generally lower than the minimum working temperature of electronic components such as PLC, IGBT, capacitor, etc., wherein if the ambient temperature is lower than the minimum tolerance temperature of the electronic components, the performance of the insulation materials such as cables, circuit boards, etc. will be degraded, and even the equipment will be damaged. Therefore, it is necessary to protect the related equipment containing electronic components by heating in a low-temperature environment to ensure the working performance of the related equipment. It is of great significance to heat the related equipment in a low-temperature environment and reduce the heating cost at the same time. SUMMARY

[0003] The technical problem solved by the present application is to provide an energy management method, system, device and storage medium, which can reduce the heating cost while heating the control module.

[0004] To solve the above technical problem, one technical solution adopted by the present application is to provide an energy management method for distributing the braking energy generated by a first oil extraction device and a second oil extraction device, which comprises: heating the control module of the first oil extraction device and the control module of the second oil extraction device in a first environmental condition; in a first time period, the first oil extraction device and the second oil extraction device are in working states respectively, the braking energy generated by the first oil extraction device is distributed to heat the control module of the first oil extraction device, and the braking energy generated by the second oil extraction device is distributed to heat the control module of the second oil extraction device; in a second time period, the first oil extraction device is in a working state and the second oil extraction device is in a non-working state, and the braking energy generated by the first oil extraction device is used to heat the control module of the first oil extraction device and the control module of the second oil extraction device respectively.

[0005] To solve the above technical problem, another technical solution adopted by the present application is to provide an energy management system for executing the above method, which comprises: a first oil extraction device and a second oil extraction device; the first oil extraction device comprises a control module, and the second oil extraction device comprises a control module, and the control module of the first oil extraction device and the control module of the second oil extraction device are electrically connected.

[0006] To solve the above technical problem, still another technical solution adopted by the present application is to provide an electronic device comprising a memory and a processor coupled to each other, the memory storing program instructions; the processor is configured to execute the program instructions stored in the memory to implement the above method.

[0007] To solve the above technical problems, another technical solution adopted by the present application is to provide a computer readable storage medium for storing program instructions, which can be executed to implement the above method.

[0008] The above method is used for distributing the braking energy generated by the first and second oil extraction devices, wherein when the first environmental condition occurs, the braking energy generated by the oil extraction devices is distributed to heat the control modules of the first and second oil extraction devices to improve the working temperature of the control modules by heating, thereby protecting the control modules. Compared with the mode of using other energy sources (such as external power supply) to supply energy for heating the control modules, the mode of heating the control modules by using the braking energy can improve the utilization rate of the braking energy, effectively reduce the energy demand for other energy sources, and effectively reduce the heating cost of the control modules. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 is a framework schematic diagram of an embodiment of the energy management system provided by the present application;

[0010] Figure 2 is a framework schematic diagram of another embodiment of the energy management system provided by the present application;

[0011] Figure 3 is a framework schematic diagram of an embodiment of the electronic device provided by the present application;

[0012] Figure 4 is a framework schematic diagram of the computer readable storage medium provided by the present application. DETAILED DESCRIPTION

[0013] To make the purpose, technical solutions and effects of the present application clearer and more explicit, the present application is further described in detail below with reference to the drawings and embodiments.

[0014] In addition, if the present application embodiments involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0015] In the field of energy, relevant devices (such as oilfield frequency conversion cabinets, wind power converters, outdoor energy storage systems, etc.) are sensitive to low temperature environments. If the ambient temperature is lower than the normal operating temperature of the relevant device, the device is likely to be damaged. For example, in oilfield operations, the frequency conversion control cabinet of the beam pumping unit may have problems such as reduced insulation performance and electrolytic capacitor failure in a low temperature environment (below -30°C), thereby affecting device operation and leading to an increase in device failure rate.

[0016] In view of this, the relevant device can be heated in a low temperature environment to raise and maintain the temperature of the relevant device at the normal operating temperature through heating. A heating module can be provided in the device that needs to be heated to heat the device through the heating module.

[0017] In some implementation scenarios, the relevant device affected by the low temperature environment is a control module of the oil extraction device, such as a control cabinet of the oil extraction device. In addition, for unified description, the application refers to the appropriate normal operating temperature of the control module as the preset operating temperature. The specific preset operating temperature can be determined according to the appropriate operating temperature of the electronic component material or experience, etc.

[0018] When the temperature difference between the ambient temperature and the preset operating temperature is relatively large, if the temperature of the control module is to be raised and maintained at the preset operating temperature, the control module needs to be continuously heated, otherwise the temperature of the control module will rapidly decrease due to heat loss.

[0019] However, the energy required for continuous heating of the control module is relatively high. If the number of control modules that need to be heated is large, complete reliance on power supply from the power grid or external power supply will increase the power supply pressure of the power grid or external power supply.

[0020] Further, considering that in the process of energy exploitation, the oil extraction device has two working states, namely the electric state and the braking state. Taking the pumping unit as an example, the electric state is the process of driving the load (pumping unit) to run, for example, the motor drives the pumping unit to go up. The braking state is the state of converting mechanical energy or other forms of energy into electrical energy, for example, when the pumping unit goes down, the motor is dragged by the load to generate electricity.

[0021] Among them, the pumping unit in the electric state consumes energy when running, and the pumping unit in the braking state generates electricity (referred to as braking energy or regenerative energy) when braking, that is, the pumping unit generates braking energy in the braking state, and the electric state and the braking state in the working process of each pumping unit are alternately performed, so that the pumping unit can generate a large amount of braking energy in the entire pumping process.

[0022] Further, still taking the pumping unit as an example, generally, the braking energy generated by the pumping unit in the braking state is fed back to the oilfield power grid, which easily leads to voltage rise, or the braking energy is dissipated in the form of heat through the braking resistor, which causes energy waste and may increase the heat dissipation burden of the system. That is, whether the braking energy is fed back to the oilfield power grid or dissipated in the form of heat through the braking resistor, it is not conducive to the rational utilization of the braking energy.

[0023] In view of the above, the application creatively proposes an energy management method for using the braking energy generated by the oil extraction equipment in the braking process to heat the control module, and using the excess braking energy to supply energy to other equipment or modules.

[0024] In a low-temperature environment, the control module needs to be heated, and the braking energy generated by the oil extraction equipment in the braking process can be used to heat the control module preferentially to increase the temperature of the control module and thereby protect the electronic components in the control module. It can be understood that this method can not only protect the control module in a low-temperature environment, but also improve the utilization rate of braking energy and reduce the energy demand for other energy sources (such as the power grid or external power supply).

[0025] Among them, the energy management method provided by the application can be used in any energy management scenario, and is not limited to the oil extraction scenario described in the following embodiments, but can also be a wind power generation scenario or a solar power generation scenario. However, for the sake of description, the oil extraction scenario is taken as an example for illustration, but this cannot limit the protection scope of the application.

[0026] It should be noted that the energy management method provided by the application is mainly used for managing energy, especially the braking energy generated by the first oil extraction equipment and the second oil extraction equipment. Among them, the oil extraction equipment is an energy collection device, such as a pumping unit, and of course can also be other devices for collecting energy.

[0027] The braking energy is generated by braking during the operation of the oil extraction equipment, so whether the oil extraction equipment generates braking energy has nothing to do with the ambient temperature of the environment in which the oil extraction equipment is located, that is, whether the ambient temperature is a first environmental condition lower than the preset working temperature of the control module or a second environmental condition higher than (or not lower than) the preset working temperature of the control module, the oil extraction equipment will generate braking energy.

[0028] The difference lies in the different distribution methods of the braking energy under the first environmental condition and the second environmental condition. The difference mainly lies in:

[0029] In the first environmental condition, the control modules need to be heated, so the braking energy is preferentially allocated to heating the control modules of the first and second oil extraction devices. If there is still remaining regenerative energy after the heating of the control modules, in order to effectively utilize the braking energy generated in the first environmental condition, the remaining braking energy can be allocated to the control modules of the oil extraction devices for electric consumption and / or to charge the energy storage modules electrically connected to the oil extraction devices.

[0030] This is because the first environmental condition is a low-temperature working condition environment (such as an outdoor oil well in winter) in which the control modules (containing electronic components) of the first and second oil extraction devices are susceptible to low temperatures and may experience performance degradation or even failure. Therefore, in the first environmental condition, the control modules of the first and second oil extraction devices need to be heated to maintain their preset operating temperature (normal operating temperature), so the braking energy is preferentially allocated to heating the control modules of the first and second oil extraction devices.

[0031] In the second environmental condition, the ambient temperature reaches the preset operating temperature of the control modules, so the control modules do not need to be heated. In order to effectively utilize the braking energy generated in the second environmental condition, the generated braking energy can be directly allocated to the control modules of the oil extraction devices for electric consumption and / or to charge the energy storage modules electrically connected to the oil extraction devices.

[0032] The allocation of the remaining braking energy in the first environmental condition and the braking energy in the second environmental condition to the control modules of the oil extraction devices for electric consumption or to the energy storage modules for charging can be based on a pre-set priority.

[0033] For example, if the priority of electric consumption is higher than that of the energy storage module, the remaining braking energy (corresponding to the first environmental condition) and / or the braking energy in the second environmental condition is preferentially allocated to the control modules of the oil extraction devices for electric consumption.

[0034] In addition, the first oil extraction device and the second oil extraction device in the present application are oil extraction devices with different working time lengths. In one scenario, the working time length of each oil extraction device can be determined according to the production of the oil well corresponding to the oil extraction device (the working time length is positively correlated with the production of the oil well), and then according to the working time length, it is determined which oil extraction devices are the first oil extraction devices and which oil extraction devices are the second oil extraction devices. In the present application, the oil extraction device with a longer working time length is referred to as the first oil extraction device, and the oil extraction device with a shorter working time length is referred to as the second oil extraction device. The length of the working time length is relative, and the number of the first oil extraction device and the second oil extraction device is at least one, but for the convenience of understanding and introduction, the present application is explained as two types of oil extraction devices.

[0035] Further, according to the working time length and / or energy management requirements of the oil extraction device, the working time period of each oil extraction device is set. In the present application, the time period in which the first oil extraction device and the second oil extraction device are both in a working state is referred to as the first time period, and the time period in which the first oil extraction device is working but the second oil extraction device is not working is referred to as the second time period. That is, in the first time period, the first oil extraction device and the second oil extraction device are both in a working state, and in the second time period, the first oil extraction device is in a working state but the second oil extraction device is in a non-working state.

[0036] For example, the first oil extraction device is a 24-hour uninterrupted working oil extraction device, and the second oil extraction device is an intermittent working device, which runs for 8 hours a day (for example, from 8 am to 12 pm, and from 2 pm to 6 pm). The running time period of the second oil extraction device (from 8 am to 12 pm, and from 2 pm to 6 pm) is the first time period, and the remaining time period is the second time period.

[0037] It can be understood that the braking energy is generated only during the working process of the oil extraction device, so the braking energy is generated only during the working time period of the oil extraction device. That is, in the first time period, the first oil extraction device and the second oil extraction device both generate braking energy, and in the second time period, only the first oil extraction device generates braking energy.

[0038] For the convenience of understanding the present application, the following will be described in combination with Figure 1 The present application provides an energy management system for managing the braking energy generated by the first oil extraction device and the second oil extraction device under the first environmental condition and the second environmental condition. In the present application, Figure 1 is a schematic diagram of an embodiment of the energy management system provided by the present application. As shown in Figure 1 , the energy management system 100 includes a first oil extraction device 50 and a second oil extraction device 51, wherein the first oil extraction device 50 includes a control module, and the second oil extraction device 51 includes a control module.

[0039] Firstly, the brake energy is used to heat the control modules of the first and second oil extraction devices 50 and 51 under the first environmental condition.

[0040] As can be seen from the above, the first environmental condition is a low-temperature working condition environment in which the oil extraction devices are located. Under this environment, the control modules of the first and second oil extraction devices 50 and 51 are prone to performance degradation or even failure due to low temperature. Therefore, under the first environmental condition, the control modules of the first and second oil extraction devices 50 and 51 need to be heated to maintain their preset working temperature. Therefore, under the first environmental condition, the brake energy needs to be allocated to heat the control modules of the first and second oil extraction devices 50 and 51.

[0041] Among them, in the first time period, the first and second oil extraction devices 50 and 51 are both in working condition, and the first and second oil extraction devices 50 and 51 will both generate brake energy. Therefore, in the first time period, the brake energy generated by each oil extraction device can be allocated to heat its own control module.

[0042] In the second time period, the first oil extraction device 50 is in working condition and can generate brake energy, but the second oil extraction device 51 is in non-working condition and will not generate brake energy. In the second time period, the brake energy generated by the first oil extraction device 50 can be used to heat the control modules of the first and second oil extraction devices 50 and 51. That is, in the non-working time period of the second oil extraction device 51, the regenerative energy generated by the first oil extraction device 50 can be used to heat the control module of the second oil extraction device 51.

[0043] In some implementation scenarios, the control modules of the first and second oil extraction devices 50 and 51 are respectively configured with heating modules, and the heating of the control modules of the first and second oil extraction devices 50 and 51 is essentially performed by the heating modules. Specifically, when the brake energy generated by the first oil extraction device 50 and / or the brake energy generated by the second oil extraction device 51 is converted into electric energy, the heating module converts the electric energy into heat energy to heat the control modules of the first and second oil extraction devices 50 and 51.

[0044] It should be noted that a plurality of heating modules are pre-set in the control modules of each oil extraction device. The number of heating modules is determined according to the historical minimum environmental temperature of the environment where the oil extraction device is located and the preset working temperature of the control module.

[0045] For example, the historical minimum ambient temperature of an oilfield in a certain region is -39°C, and the preset working temperature of the control module is 0°C or above (for example, 1°C). The total heat required for the control module to be heated from the historical minimum ambient temperature of -39°C to 1°C (i.e., the total heat generation of the heating module) can be determined according to the historical minimum ambient temperature of the oilfield in the region, the preset working temperature of the control module, the heat transfer coefficient of the control module (for example, the control cabinet), the surface area of the control module, and the preset safety adjustment coefficient. Then, according to the total heat and the heating power of each heating module, the number of heating modules required for the control module is determined.

[0046] For example, the total heat required for the control module can be calculated according to the following formula:

[0047] Qr = K * A * a * AT

[0048] AT = T1 - T2

[0049] Wherein, Qr represents the total heat required for the control module, K represents the heat transfer coefficient of the control module, a represents the preset safety adjustment coefficient, A represents the surface area of the control module, AT represents the temperature difference, T1 represents the preset working temperature of the control module, and T2 represents the historical minimum ambient temperature.

[0050] Wherein, the heat transfer coefficient K can be determined according to the material of the control module, for example, the material of the control module is steel, k = 5.5 W / m2·℃, in addition, considering that the equipment loss will reduce the heating capacity of the heating module, the preset safety adjustment coefficient a can be set to be greater than 1.

[0051] For example, according to the temperature difference between the historical minimum ambient temperature and the preset working temperature, the heat transfer coefficient and the surface area of the control module, the total energy requirement of the control module is determined to be 1320W, so three 500W heating units can be set in the equipment to be heated for low temperature protection.

[0052] Further, considering that the number of heating modules in the control module is determined based on the historical minimum ambient temperature, but the actual ambient temperature of the oil extraction equipment is not fixed and is higher than the historical minimum ambient temperature in most time periods, especially when the temperature difference between the actual ambient temperature and the historical minimum ambient temperature is large, opening all the heating modules set in the control module can easily cause unnecessary energy waste, so the actual ambient temperature of the oil extraction equipment during the working period can be determined, and the number of heating modules required to be turned on can be determined according to the temperature difference between the actual ambient temperature of the oil extraction equipment during the working period and the preset working temperature of the control module.

[0053] In an implementation scenario, considering that the temperature of each month or quarter of each region is relatively stable and has small fluctuations, the historical environmental temperature (for example, the statistical value of the average air temperature in each month in the last few years) of the region where the oil extraction equipment is located in each time period (for example, each month) can be taken as the actual environmental temperature in the corresponding working time period.

[0054] For example, the historical average temperature of November in the last 5 years in a region is -39°C, -37°C, -36°C, -38°C, and -39°C, and the temperature change is not large. The statistical value of the historical average temperature of November in the last 5 years can be taken as the historical environmental temperature of November in the region, and the historical environmental temperature of November in the region can be taken as the actual environmental temperature of the oil extraction equipment in November.

[0055] It should be noted that for the time period (which can be referred to as a target time period) in which the historical environmental temperature is lower than the preset working temperature of the control module, the environmental condition satisfies the first environmental condition, and the control module needs to be heated.

[0056] Therefore, in the target time period in which the historical environmental temperature satisfies the first environmental condition, the number of heating modules that should be configured for each control module can be determined based on the temperature difference between the historical environmental temperature of the oil extraction equipment in the target time period and the preset working temperature. The number of heating modules configured for the control module has a different meaning from the number of heating modules set for the control module as expressed above. The former refers to the number of heating modules turned on, and the latter refers to the number of heating modules set. For example, 10 heating modules are set in the control module, but according to the historical environmental temperature when the first environmental condition is satisfied, it is determined that the number of heating modules that need to be configured (turned on) is 5.

[0057] As can be seen from the above, after determining the historical environmental temperature of the oil extraction equipment in the working time period, the number of heating modules that need to be turned on can be determined according to the temperature difference between the historical environmental temperature of the oil extraction equipment in the working time period and the preset working temperature of the control module.

[0058] In an implementation, the required heat of each control module can be calculated according to the temperature difference between the historical environmental temperature of the oil extraction equipment in the working time period and the preset working temperature of the control module, and then the number of heating modules that should be configured (turned on) for each control module can be determined according to the required heat.

[0059] The required heat of each control module can be calculated by referring to the following formula:

[0060] Qr = K * A * a * AT

[0061] AT = T1-T2

[0062] Wherein, Qr represents the required heat of the control module, K represents the heat transfer coefficient of the control module, a represents the preset safety adjustment coefficient, A represents the surface area of the control module, AT represents the temperature difference, T1 represents the preset working temperature of the control module, and T2 represents the historical environment temperature.

[0063] For each control module, after determining its required heat, the ratio of the required heat to the heating power of the heating module is rounded up to obtain the number of the heating module. Of course, after determining the required heat, the number of the heating module can also be determined by using the existing method.

[0064] In another embodiment, considering that the temperature of each time period is linearly changed, the correlation between the temperature difference interval and the number of the heating module to be started can be established in advance, and then the temperature difference interval in which the temperature difference between the historical environment temperature of the oil extraction equipment in the working time period and the preset working temperature of the control module is located is determined, the number of the heating module to be started associated with the temperature difference interval is found from the correlation, and is used as the number of the heating module to be configured (started) for each control module.

[0065] For example, the temperature difference of 10℃ can be used as a reference value, when the temperature difference is less than 10℃, one heating module should be configured for each control module, when 10℃≤temperature difference<20℃, two heating modules should be configured for each control module, and when the temperature difference is greater than or equal to 20℃, three heating modules should be configured for each control module.

[0066] Wherein, the historical environment temperature obtained by statistics is used as the actual environment temperature of the oil extraction equipment in the corresponding working time period to determine the number of the heating module to be started.

[0067] Of course, in other embodiments, the actual environment temperature of the oil extraction equipment in the corresponding working time period can also be determined by using the temperature prediction method or the real-time measurement method (for example, using a thermometer to measure).

[0068] In some implementation scenarios, in the first time period when the first oil extraction equipment 50 and the second oil extraction equipment 51 are both in the working state, one of the first oil extraction equipment 50 and the second oil extraction equipment 51 is in the braking state, and the other of the first oil extraction equipment 50 and the second oil extraction equipment 51 is in the motoring state, the braking energy generated when one of the first oil extraction equipment 50 and the second oil extraction equipment 51 is in the braking state is also allocated to supply power to the other of the first oil extraction equipment 50 and the second oil extraction equipment 51 in the motoring state for its motoring consumption.

[0069] The braking energy generated by one of the first oil extraction device 50 and the second oil extraction device 51 in the braking state under the first environmental condition or the second environmental condition can be distributed to supply power to the other one of the first oil extraction device 50 and the second oil extraction device 51 in the motoring state for motoring consumption.

[0070] For example, one of the first oil extraction device 50 and the second oil extraction device 51 can be controlled to be in the braking state and the other one can be controlled to be in the motoring state under the first environmental condition or the second environmental condition and in the first time period, and then the braking energy generated by the oil extraction device in the braking state can be distributed to heat the control module of the oil extraction device itself and to supply power to the oil extraction device in the motoring state.

[0071] For example, the first oil extraction device 50 can be controlled to be in the braking state and the second oil extraction device 51 can be controlled to be in the motoring state under the first environmental condition and in the first time period, and in this case, the first oil extraction device 50 generates braking energy in the braking state and the second oil extraction device 51 needs to consume energy, so the braking energy generated by the first oil extraction device 50 in the braking state can be distributed to heat the control module of the first oil extraction device 50 itself and to the second oil extraction device 51 for motoring consumption.

[0072] Of course, the second oil extraction device 51 can be controlled to be in the braking state and the first oil extraction device 50 can be controlled to be in the motoring state, and in this case, the second oil extraction device 51 generates braking energy in the braking state and the first oil extraction device 50 needs to consume energy, so the braking energy generated by the second oil extraction device 51 in the braking state can be distributed to heat the control module of the second oil extraction device 51 itself and to the first oil extraction device 50 for motoring consumption.

[0073] For example, the output frequency parameters of the frequency converters in the control modules corresponding to the first oil extraction device 50 and the second oil extraction device 51 can be pre-configured, and one of the first oil extraction device 50 and the second oil extraction device 51 can be controlled to be in the braking state and the other one can be controlled to be in the motoring state by setting the frequency parameters.

[0074] It should be noted that the yield of the oil well where the first oil extraction device 50 is located is higher than that of the oil well where the second oil extraction device 51 is located, so the first oil extraction device 50 has a longer running time and needs more flushing times, and the corresponding braking times are more and the generated braking energy is higher. The mode of controlling the first oil extraction device 50 to be in the braking state and the second oil extraction device 51 to be in the motoring state is beneficial to improve the utilization rate of the braking energy. The specific explanation is as follows:

[0075] The number of strokes and the running time of each oil extraction device determine the utilization rate of braking energy. In order to generate and utilize braking energy to a greater extent, before the braking energy generated by the first oil extraction device 50 and the second oil extraction device 51 is distributed, the yield of each oil well where the oil extraction device is located is obtained, and the running data of the oil extraction device corresponding to each oil well is determined based on the yield of each oil well, the running data including at least one of the number of strokes and the running time. The yield is positively correlated with the number of strokes, and the yield is positively correlated with the running time.

[0076] In the determination of the number of strokes of the plurality of oil extraction devices, the running time (the running time required per day) of each oil extraction device can be predicted based on the yield of each oil well, and then the number of strokes of each oil extraction device is determined according to the running time of each oil extraction device. In the process of determining the number of strokes of each oil extraction device, it is necessary to ensure that the first oil extraction device 50 in the high-yield oil well is in the braking state, and the second oil extraction device 51 in the low-yield oil well is in the electric state, so that the braking energy generated by the first oil extraction device 50 in the high-yield oil well can be used for the operation of the second oil extraction device 51 in the low-yield oil well. Here, high and low are relative. The number of the above-mentioned first oil extraction device 50 and the second oil extraction device 51 can be multiple, and the electric state or the braking state of the oil extraction device and the corresponding number of strokes can be adjusted by adjusting the output frequency parameter of the frequency converter.

[0077] For example, in the oil extraction field, the number of oil extraction devices is 4, and the yield of the corresponding oil well from high to low is high-yield oil well, medium-yield oil well, low-yield oil well and extra-low-yield oil well. The daily yield of the oil extraction device corresponding to the high-yield oil well is greater than or equal to 100t, and the number of strokes is 8. The daily yield of the oil extraction device corresponding to the medium-yield oil well is greater than or equal to 15t and less than 100t, and the number of strokes is 6. The daily yield of the oil extraction device corresponding to the low-yield oil well is greater than or equal to 5t and less than 15t, and the number of strokes is 4. The daily yield of the oil extraction device corresponding to the extra-low-yield oil well is less than 5t, and the number of strokes is 2.

[0078] Please continue to refer to Figure 1 In an implementation scenario, the energy management system 100 further includes an energy storage module 60, and the first oil extraction device 50 and the second oil extraction device 51 are electrically connected to the energy storage module 60. In this implementation scenario, the braking energy generated by the first oil extraction device 50 and / or the braking energy generated by the second oil extraction device 51 is also distributed to charge the energy storage module 60.

[0079] For example, under the first environmental condition, the remaining braking energy after the braking energy generated by the first oil extraction device 50 and / or the braking energy generated by the second oil extraction device 51 is used for other purposes is distributed to charge the energy storage module 60.

[0080] In one implementation scenario, the other use includes heating the control modules. After the braking energy generated by the first oil extraction device 50 and / or the braking energy generated by the second oil extraction device 51 is allocated to heat the control modules, the remaining braking energy is allocated to store the energy in the energy storage module 60.

[0081] In the first time period, the first oil extraction device 50 and the second oil extraction device 51 can both generate braking energy. After the braking energy generated by each of the first oil extraction device 50 and the second oil extraction device 51 is allocated to heat the control module of the oil extraction device, if there is still remaining braking energy, the remaining braking energy can be allocated to store the energy in the energy storage module 60.

[0082] In the second time period, only the first oil extraction device 50 generates braking energy. After the braking energy generated by the first oil extraction device 50 is allocated to heat the control modules of the first oil extraction device 50 and the second oil extraction device 51, if there is still remaining braking energy, the remaining braking energy can be allocated to store the energy in the energy storage module 60.

[0083] In another implementation scenario, the other use includes heating the control modules and supplying energy to the oil extraction device currently in the motoring state. In this implementation, after the braking energy of the first oil extraction device 50 and the second oil extraction device 51 is allocated to heat the control modules, if there is still remaining braking energy, the remaining braking energy is allocated to the oil extraction device currently in the motoring state for motoring consumption. If there is still remaining braking energy after the motoring consumption, the remaining braking energy is allocated to store the energy in the energy storage module 60.

[0084] Of course, under the second environmental condition, the braking energy generated by the first oil extraction device 50 and / or the braking energy generated by the second oil extraction device 51 can also be allocated to store the energy in the energy storage module 60.

[0085] It should be noted that under the second environmental condition, the control module of the first oil extraction device 50 and the control module of the second oil extraction device 51 do not need to be heated. If, under the second environmental condition, one of the first oil extraction device 50 and the second oil extraction device 51 is in the braking state and the other is in the motoring state, the braking energy generated by the oil extraction device in the braking state can be allocated to supply energy to the oil extraction device in the motoring state or to store the energy in the energy storage module 60.

[0086] In a specific embodiment, when in the second environmental condition, the braking energy generated by the first oil extraction device 50 and / or the braking energy generated by the second oil extraction device 51 can be preferentially allocated to charging the energy storage module 60. When allocated to charging the energy storage module 60, if there is still surplus braking energy, the surplus braking energy can be allocated to the oil extraction device in the electric mode for electric consumption.

[0087] Of course, in the second environmental condition, the braking energy generated by the first oil extraction device 50 and / or the braking energy generated by the second oil extraction device 51 can also be preferentially allocated to the oil extraction device in the electric mode for electric consumption. If there is still surplus braking energy after being used for electric consumption, the surplus braking energy is allocated to charging the energy storage module 60.

[0088] As described above, the first oil extraction device 50 and the second oil extraction device 51 are respectively electrically connected to the energy storage module 60. The electrical energy stored in the energy storage module 60 can be allocated to at least one of the following: energy supply for the first oil extraction device 50 and / or the second oil extraction device 51, heating for the control module, and power supply for the power grid connected to the energy storage module 60.

[0089] In an implementation scenario, the electrical energy stored in the energy storage module 60 can be allocated according to different time periods and / or actual energy allocation conditions. At least the following cases are included:

[0090] Case one, when in the first time period, the first oil extraction device 50 and the second oil extraction device 51 are both in the working state and both need to consume energy. The electrical energy stored in the energy storage module 60 can be allocated to energy supply for the control module of the first oil extraction device 50 and / or energy supply for the control module of the first oil extraction device 50. In this implementation scenario, energy supply for the control module means energy supply for the control module to control the corresponding oil extraction device.

[0091] This is because the electrical energy stored in the energy storage module 60 can not meet the total energy demand of the first oil extraction device 50 and the second oil extraction device 51 in the working period. In this case, the control module of one of the first oil extraction device 50 and the second oil extraction device 51 can be supplied with energy, and the other one can use the power grid to provide energy. Of course, if the electrical energy stored in the energy storage module 60 can meet the total energy demand of the first oil extraction device 50 and the second oil extraction device 51 in the working period, the control modules corresponding to the first oil extraction device 50 and the second oil extraction device 51 can be supplied with energy respectively.

[0092] Case two, when in the second time period, only the first oil extraction device 50 works. At this time, the electrical energy stored in the energy storage module 60 can be allocated to energy supply for the control module of the first oil extraction device 50, so that the control module of the first oil extraction device 50 can control the first oil extraction device 50 to work by using the stored electrical energy provided by the energy storage module 60.

[0093] Case three, in the third time period, and under the first environmental condition, the first oil extraction device 50 and the second oil extraction device 51 are in non-working state respectively, no braking energy is generated, and the stored electric energy in the energy storage module 60 can be preferentially distributed to heat the control modules of the first oil extraction device 50 and the second oil extraction device 51.

[0094] Of course, if the braking energy generated by the first oil extraction device 50 and / or the second oil extraction device 51 cannot meet the heating demand of the control modules of the first oil extraction device 50 and the second oil extraction device 51 under the first environmental condition and in the first time period or the second time period, the stored electric energy in the energy storage module 60 can also be preferentially distributed to heat the control modules of the first oil extraction device 50 and the second oil extraction device 51.

[0095] Case four, the energy storage module 60 is also electrically connected with the local power grid, and the stored electric energy in the energy storage module 60 can also be distributed to supply power to the local power grid. For example, the stored electric energy in the energy storage module 60 can be distributed to supply power to the local power grid at the power consumption peak of the local power grid.

[0096] In summary, the energy stored in the energy storage module 60 can be used to supply energy for heating the control modules, for supplying energy to the working oil extraction devices, and for supplying energy to the local power grid. Among them, the heating of the control modules has the highest priority, followed by the working oil extraction devices (in the electric state), and finally the local power grid.

[0097] It should be noted that the sources of energy in this application are braking energy, stored electric energy in the energy storage module 60, and electric energy from the power grid. The electric energy for heating the control modules and working the oil extraction devices gives priority to using braking energy, and only considers the stored electric energy in the energy storage module 60 and the electric energy from the power grid when the braking energy is insufficient. This is because, compared with the energy storage module 60 and the power grid, the control modules of the oil extraction devices are closer to the oil extraction devices, which can reduce the time and energy consumption of energy transmission.

[0098] Please continue to refer to Figure 1 In some implementation scenarios, the energy management system 100 further includes a rectifier module 20, and the control modules of the first oil extraction device 50 and the second oil extraction device 51 are respectively electrically connected with the rectifier module 20, and the braking energy is distributed through the rectifier module 20.

[0099] In an embodiment, the energy management system 100 further comprises a DC bus 30, the control module of the first oil extraction device 50 and the control module of the second oil extraction device 51 are respectively electrically connected to the rectifier module 20 through the common DC bus 30, so that the braking energy generated by the first oil extraction device 50 and the second oil extraction device 51 can be uploaded to the common DC bus 30 and transmitted through the common DC bus 30, and the control module of each oil extraction device can obtain electric energy from the DC bus 30 based on the energy needs of the control module to heat itself and / or control the corresponding oil extraction device (the oil extraction device body connected to itself).

[0100] For example, the control module of the first oil extraction device 50 obtains electric energy from the DC bus 30 to heat the control module and / or control the first oil extraction device 50.

[0101] Of course, if there is still braking energy on the DC bus 30, the remaining braking energy can be distributed to the energy storage module 60 for energy storage.

[0102] It should be noted that the existing rectifier module 20 and control module are a whole module, which controls one oil extraction device, and the braking energy generated by the oil extraction device is uploaded to the power grid through the whole module, which is easy to cause the grid voltage to rise.

[0103] And the present application adopts the parallel connection mode of a single rectifier module 20 and multiple control modules, the braking energy generated by each oil extraction device can be transmitted through the DC bus 30, and the control module of each oil extraction device directly obtains electric energy from the DC bus 30 according to its own needs, thereby improving the utilization rate of braking energy.

[0104] Further, the remaining braking energy on the DC bus 30 can enter the energy storage module 60, solving the problem that the existing mode is easy to cause the grid voltage to rise.

[0105] It should be noted that the braking energy generated by the oil extraction device itself cannot be used for self electric consumption, but can only be used for electric consumption of other oil extraction devices in the electric state, because the same oil extraction device needs time to change from the braking state to the electric state, but the braking energy generated in the braking state cannot remain on the DC bus 30 and needs to be quickly distributed, so it cannot be used for self electric consumption.

[0106] In one scenario, the energy management system 100 is connected with an oil field power grid and a local power grid. The energy management method provided by the present application further comprises at least one of the following steps:

[0107] First, obtain the electric energy provided by the oil field power grid.

[0108] Second, control the electric energy provided by the oil field power grid to be used for the operation of the energy management system 100 (including the heating of the control module and the electric consumption of the oil extraction device).

[0109] Third, control the power provided by the oilfield power grid to charge the energy storage module 60.

[0110] Fourth, control the energy storage module 60 to supply energy to the local power grid during the peak power consumption period of the local power grid.

[0111] Fifth, control the power of the energy storage module 60 to heat the heating module.

[0112] Among them, the oilfield power grid generally provides power for operations in the oilfield area, and the local power grid generally provides power for residents living in the surrounding area of the oilfield, and in general, the unit power price of the oilfield power grid is lower than that of the local power grid.

[0113] In an implementation scenario, the oilfield power grid and the local power grid are respectively provided with on-off switches between the energy management system 100, and the on-off of the on-off switch determines the communication and interruption of the power grid and the energy management system 100. Among them, the on-off of the on-off switch can be controlled by the relevant user, and the relevant control condition can also be set in advance, and the energy management system 100 determines whether the on-off switch is connected or connected based on whether the current condition meets the control condition.

[0114] It should be noted that during the peak power consumption period of the local power grid, the energy storage module 60 can relieve the power consumption pressure of the local power grid during the peak power consumption period.

[0115] Further, the energy source of the energy storage module 60 can be the oilfield power grid or the braking energy. Whether the energy source is the oilfield power grid or the braking energy, the energy acquisition cost of the energy storage module 60 is lower than that of the energy from the local power grid, so the energy storage module 60 can also reduce the power consumption cost to a certain extent. Supply energy to the local power grid.

[0116] In an implementation scenario, each oil extraction device is a pumping unit, and the control module is a control cabinet. Among them, the energy management system 100 further includes a frequency converter arranged in the control module, and different frequency converters are connected in parallel through the DC bus 30.

[0117] Please refer to Figure 1 In some implementation scenarios, the energy management system 100 further includes an AC bus 10, and each control module is provided with a frequency converter and a heating module (not shown in the figure), each control module is electrically connected with the rectifier module 20 through the DC bus 30, and each control module is connected in parallel, the energy storage module 60 includes an inverter 61, a conversion unit 62 and a battery 63, the DC bus 30 is connected between the inverter 61 and the conversion unit 62, and the connection relationship between each component can be referred to Figure 1 .

[0118] Wherein, the oilfield power grid provides AC power, which flows to the rectifier module 20 through the AC bus 10, and then is converted into DC power by the rectifier module 20, and then flows to the control module through the DC bus 30, or is adjusted by the conversion unit 62 in current / voltage, and then flows to the battery 63; of course, after being converted into DC power by the rectifier module 20, it can also flow to the inverter 61 through the DC bus 30, and then is converted into AC power by the inverter 61, and then flows to the local power grid.

[0119] Further, the braking energy generated by the oil extraction equipment in the braking state is converted into DC power by the frequency converter in the control module, and is transmitted to the DC bus 30, and each control module obtains energy to heat or control the oil extraction equipment in the motoring state through the DC bus 30, and the remaining energy is transmitted to the energy storage module 60.

[0120] In an implementation scenario, the energy management system 100 further comprises a control unit (not shown in the figure), which can be a control unit composed of several control modules, or a control unit independent of the several control modules and connected with each control module, and the control unit is used to perform at least one of the following operations in the energy management process:

[0121] First, the control unit receives AC power generated by the oilfield power grid, and converts the AC power into DC power through the inverter 61 or the rectifier module 20, and then adjusts the current / voltage through the conversion unit 62, and then flows to the battery.

[0122] Second, during the peak power consumption period, the stored electricity in the battery 63 is converted into AC power through the conversion unit 62 and the inverter 61, and then is supplied to the local power grid, and / or flows into the DC bus 30 after passing through the conversion unit 62, and then is supplied to the heating module (not shown in the figure) in each control module or the operation of the oil extraction equipment in the motoring state through the DC bus 30.

[0123] Third, the braking energy generated by the oil extraction equipment in the braking state is obtained and distributed. Wherein, the priority order of the braking energy under different environmental conditions can be set in advance, and the braking energy is distributed according to the priority order.

[0124] Wherein, under the first environmental condition, the priority order from high to low is: heating module, oil extraction equipment in motoring state, and energy storage module.

[0125] Under the second environmental condition, the priority order from high to low is: oil extraction equipment in motoring state and energy storage module.

[0126] Please refer to Figure 2 , Figure 2 is the framework schematic diagram of another embodiment of the energy management system provided by the present application, asFigure 2 As shown, the energy management system 100 comprises a first production facility 50 comprising a control module and a second production facility 51 comprising a control module.

[0127] The energy management system is configured to perform the energy management method.

[0128] In an embodiment, the energy management system 100 comprises a control unit (not shown in the figures) electrically connected to the first production facility 50 and the second production facility 51, respectively, and the energy management method is performed by the control unit in the energy management system 100.

[0129] Referring to Figure 3 , Figure 3 is a schematic diagram of the framework of an embodiment of the electronic device provided in the present application. In the embodiment, the electronic device 300 comprises a memory 310 and a processor 320 coupled to each other.

[0130] The memory 310 stores program instructions, and the processor 320 is configured to execute the program instructions stored in the memory 310 to implement the steps of any of the method embodiments described above. In a specific implementation scenario, the electronic device 300 can include but is not limited to a microcomputer, a server, and in addition, the electronic device 300 can also include a notebook computer, a tablet computer and other mobile devices, which are not limited herein.

[0131] Specifically, the processor 320 is configured to control itself and the memory 310 to implement the steps of any of the embodiments described above. The processor 320 can also be referred to as a CPU (Central Processing Unit). The processor 320 can be an integrated circuit chip with processing capability. The processor 320 can also be a general purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The general purpose processor can be a microprocessor or the processor can also be any conventional processor. In addition, the processor 320 can be implemented by an integrated circuit chip.

[0132] Referring to Figure 4 , Figure 4is a schematic diagram of the framework of the computer readable storage medium provided by the present application. The computer readable storage medium 400 of the embodiments of the present application stores program instructions 410, which, when executed, implement the method provided by any embodiment of the above method and any non-conflicting combination. Among them, the program instructions 410 can form a program file and be stored in the above computer readable storage medium 400 in the form of a software product, so as to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method of each embodiment of the present application. And the aforementioned computer readable storage medium 400 includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and various media that can store program codes, or computer, server, mobile phone, tablet and other terminal devices.

[0133] The above method is used for distributing the braking energy generated by the first and second oil extraction devices. When the first environmental condition is met, the braking energy generated by the oil extraction devices is distributed to heat the control modules of the first and second oil extraction devices, so as to improve the working temperature of the control modules by heating, and thus protect the control modules. Compared with the method of using other energy sources (such as external power supply) to supply energy for heating the control modules, the method of heating the control modules by using the braking energy can improve the utilization rate of the braking energy, effectively reduce the energy demand for other energy sources, and thus effectively reduce the heating cost of the control modules.

[0134] The above is only the embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent flow transformation using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. An energy management method for distributing brake energy generated by a first and a second oil extraction device, characterized in that, The method comprises: When the first environmental condition, the control module of the first oil extraction equipment and the control module of the second oil extraction equipment are heated; In the first time period, the first oil extraction equipment and the second oil extraction equipment are in working state respectively, the braking energy generated by the first oil extraction equipment is allocated to heat the control module of the first oil extraction equipment, and the braking energy generated by the second oil extraction equipment is allocated to heat the control module of the second oil extraction equipment; In the second time period, the first oil extraction equipment is in working state, and the second oil extraction equipment is in non-working state, and the braking energy generated by the first oil extraction equipment is used to heat the control module of the first oil extraction equipment and the control module of the second oil extraction equipment respectively.

2. The method according to claim 1, wherein the heating of the control module of the first oil extraction equipment and the control module of the second oil extraction equipment comprises: The control module of the first oil extraction equipment and the control module of the second oil extraction equipment are respectively provided with a heating module, and the braking energy generated by the first oil extraction equipment and / or the braking energy generated by the second oil extraction equipment is converted into electric energy, and then the electric energy is converted into heat energy by the heating module to heat the control module of the first oil extraction equipment and the control module of the second oil extraction equipment.

3. The method according to claim 2, wherein when the first environmental condition, the historical environmental temperature is lower than the preset working temperature of the control module of the first oil extraction equipment and / or the control module of the second oil extraction equipment; Based on the temperature difference between the preset working temperature and the historical environmental temperature, the required heat of each control module is calculated, and the number of heating modules configured for each control module is determined according to the required heat. The calculation formula for calculating the required heat of each control module based on the temperature difference between the preset working temperature and the historical environmental temperature is as follows: Qr=K*A*α*ΔT 4. The method of claim 3, wherein, ΔT=T1-T2 Wherein, Qr represents the required heat of the control module, K represents the heat transfer coefficient of the control module, α represents the preset safety adjustment coefficient, A represents the surface area of the control module, ΔT represents the temperature difference, T1 represents the preset working temperature of the control module, and T2 represents the historical environmental temperature.

5. The method according to any one of claims 1-4, wherein in the first time period, when one of the first oil extraction equipment and the second oil extraction equipment is in braking state, the other of the first oil extraction equipment and the second oil extraction equipment is in motoring state; Wherein, the braking energy generated when one of the first oil extraction equipment and the second oil extraction equipment is in braking state is also allocated to supply energy to the other of the first oil extraction equipment and the second oil extraction equipment. The first oil extraction equipment and the second oil extraction equipment are respectively electrically connected to an energy storage module, and the braking energy generated by the first oil extraction equipment and / or the braking energy generated by the second oil extraction equipment is also allocated to charge the energy storage module.

7. The method according to claim 6, wherein ​ 6. The method according to any one of claims 1 to 4, characterized in that, ​ ​ The electric energy stored in the energy storage module is distributed to supply power to the first oil extraction device and / or the second oil extraction device; and / or, The energy storage module is electrically connected with a local power grid, and the electric energy stored in the energy storage module is also distributed to supply power to the local power grid.

8. The method of claim 6, wherein, In a first time period, the electric energy stored in the energy storage module is distributed to supply power to the control module of the first oil extraction device and / or the control module of the second oil extraction device; and / or, In a second time period, the electric energy stored in the energy storage module is distributed to supply power to the control module of the first oil extraction device; and / or, In a third time period, the first oil extraction device and the second oil extraction device are respectively in a non-working state, and the electric energy stored in the energy storage module is distributed to heat the control module of the first oil extraction device and the control module of the second oil extraction device.

9. The method of claim 6, wherein, When the second environmental condition is met, the braking energy generated by the first oil extraction device and / or the braking energy generated by the second oil extraction device is distributed to charge the energy storage module; When the second environmental condition is met, the historical environmental temperature is not lower than a preset working temperature of the control module of the first oil extraction device and the control module of the second oil extraction device.

10. The method of any one of claims 1-9, wherein, The control module of the first oil extraction device and the control module of the second oil extraction device are respectively electrically connected with a rectifier module, and the braking energy is distributed through the rectifier module.

11. An energy management system for carrying out the method of any one of claims 1-10, characterized by The system comprises: a first oil extraction device, the first oil extraction device comprising a control module; a second oil extraction device, the second oil extraction device comprising a control module; The control module of the first oil extraction device and the control module of the second oil extraction device are electrically connected.

12. A computer-readable storage medium, characterized in that, The computer readable storage medium stores program instructions capable of being executed by the processor, and the program instructions can be executed by the processor to implement the method of any one of claims 1-10.

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