Multi-source coordinated energy consumption control method and system for oil field drilling machine, terminal and storage medium

Abstract

The invention belongs to the technical field of oil field equipment power supply, and particularly relates to a multi-source coordinated energy consumption control method and system of an oil field drilling machine, a terminal and a storage medium, the method comprises the steps of monitoring the power demand of the load side of the oil field drilling machine in real time, and obtaining the total load demand power and the real-time load power slope; calculating the real-time output power of the photovoltaic new energy unit based on the monitored illumination intensity, and determining the photovoltaic distribution power; dynamically distributing power supply power of a power grid power supply unit according to the total load demand power, the photovoltaic distribution power and the power grid response coefficient; and after the photovoltaic distribution power and the power grid distribution power are met, the compensation power of the diesel power generation unit is dynamically adjusted according to the residual load power gap and the economic power lower limit of the diesel power generation unit. The power demand of the load side of the oil field drilling machine is monitored in real time, and multiple energy supply modes such as photovoltaic new energy, a power grid and diesel power generation are combined, so that efficient, green and stable operation of the oil field drilling machine is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power supply for oilfield equipment, and in particular relates to a multi-source coordinated energy control method, system, terminal and storage medium for an oilfield drilling rig. Background Art

[0002] Traditional oilfield drilling rigs rely primarily on diesel generators as their sole source of power during operations. However, this power supply method has significant drawbacks. First, diesel power generation is expensive, including fuel procurement, transportation, and generator maintenance costs, which directly increase oilfield operating costs. Second, diesel generator load factors are typically low, often below 40%, meaning a significant amount of generating capacity is idle and wasteful. More seriously, diesel power generation generates significant carbon emissions, polluting the environment and incompatible with current green and low-carbon development trends.

[0003] In remote areas or on offshore platforms, geographical constraints further increase diesel transportation and maintenance costs, making diesel power generation even less economical. Furthermore, grid coverage in these areas is often insufficient, making it difficult for grid power to support the energy needs of drilling rigs. This makes it difficult to integrate existing diesel generator systems with grid power. In these situations, oilfield drilling rigs are completely reliant on diesel power systems, exacerbating environmental pollution. Summary of the Invention

[0004] In view of the defects in the existing technology that traditional oilfield drilling rigs rely on diesel generator sets as power sources, the cost of diesel power generation is high, the load rate of diesel generators is usually low, and resources are wasted, the present invention provides a multi-source coordinated energy control method, system, terminal and storage medium for oilfield drilling rigs to solve the above technical problems.

[0005] In a first aspect, the present invention provides a multi-source coordinated energy control method for an oilfield drilling rig, characterized by comprising: Real-time monitoring of the power demand on the load side of the oilfield drilling rig to obtain the total load power demand and real-time load power slope; Calculate the real-time output power of the photovoltaic new energy unit based on the monitored light intensity and determine the photovoltaic allocation power; Dynamically allocate the power supply of the grid power supply unit according to the total load demand power, photovoltaic allocation power and grid response coefficient. The grid allocation power allocated to the grid power supply unit is preferentially pre-compensated according to the real-time load power slope. After the photovoltaic power allocation and the grid power allocation are met, the compensation power of the diesel generator unit is dynamically adjusted according to the remaining load power gap and the economic power lower limit of the diesel generator unit; According to the preset power supply priority, the control unit supplies power to the oilfield drilling rig according to the corresponding photovoltaic distribution power, grid distribution power and diesel generator unit compensation power, realizing multi-source coordinated energy control of the oilfield drilling rig.

[0006] A further improvement of this technical solution is to monitor the power demand of the load side of the oilfield drilling rig in real time, obtain the total load power demand and the real-time load power slope, and the method includes: The power sensor installed on the load side of the oilfield drilling rig collects the current and voltage signals on the load side of the oilfield drilling rig in real time and calculates the total load power demand. ; Total power demanded by the load Perform calculus operations to obtain real-time load power slope .

[0007] A further improvement of this technical solution is to calculate the real-time output power of the photovoltaic new energy unit based on the monitored light intensity and determine the photovoltaic allocated power, the method of which includes: Real-time collection of light intensity data in the oilfield area through a distributed light intensity sensor array ; Light intensity data Perform data cleaning to remove outliers caused by occlusion or sensor failure; According to the conversion efficiency of photovoltaic panels and the total area of ​​PV arrays PV parameters, calculate the real-time PV output power The calculation formula is: ; in, The maximum output power corresponding to the photovoltaic inverter in the pre-stored photovoltaic new energy unit is determined by the parameters on the nameplate of the photovoltaic inverter equipment; The calculated real-time photovoltaic output power Perform limiting processing to determine photovoltaic distribution power : When the photovoltaic real-time output power Greater than or equal to When determining the photovoltaic power distribution equal ; When the photovoltaic real-time output power Less than And when it is greater than zero, determine the photovoltaic allocated power Equal to the real-time photovoltaic output power ; When the photovoltaic real-time output power When it is less than or equal to zero, determine the photovoltaic allocated power Equal to zero.

[0008] A further improvement of this technical solution is to dynamically allocate the power supply of the grid power supply unit according to the total load demand power, the photovoltaic allocation power and the grid response coefficient, wherein the grid allocation power allocated to the grid power supply unit is preferentially pre-compensated according to the real-time load power slope. The method includes: Get the preset grid parameters: grid response coefficient and the maximum power supply limit of the power grid ; Power distribution based on photovoltaics , grid parameters and real-time load power slope Calculation of grid distribution power for grid supply units , and its calculation formula is: .

[0009] A further improvement of this technical solution is that after the photovoltaic power allocation and the grid power allocation are met, the compensation power of the diesel generator unit is dynamically adjusted according to the remaining load power gap and the economic power lower limit of the diesel generator unit. The method includes: According to the total power demand of the load , Photovoltaic distribution power Distributing power to the grid , calculate the remaining load power gap , and its calculation formula is: ; Determine the remaining load power gap Is it greater than zero? If yes, read the pre-stored economic power lower limit of the diesel generator unit , the maximum power limit of the diesel generator unit and compensation coefficient of diesel generating units ; According to the remaining load power gap , the lower limit of economic power of diesel generator units , compensation coefficient of diesel generator unit and real-time load power slope Calculate the distributed power of diesel generating units , and its calculation formula is: ; Determine the real-time load power slope Is it greater than zero? If not, the diesel generator unit is controlled to use the economic power lower limit run; If yes, then control the diesel generator unit to distribute power according to the calculated power Run and distribute power in diesel generating units Greater than the maximum power limit of the oil power generation unit When the diesel generator unit is controlled, the maximum power limit is set. run.

[0010] Further improvements to this technical solution also include: Determine whether the calculated photovoltaic distribution power, grid distribution power and diesel generator compensation power meet the preset balance conditions; If so, adjust the power supply priorities of the photovoltaic new energy unit, the grid power supply unit, and the diesel power generation unit.

[0011] A further improvement of this technical solution is that the equilibrium condition is: ; in, is the power tolerance, .

[0012] In a second aspect, the present invention provides a multi-source coordinated energy control system for an oilfield drilling rig, comprising: A power supply module, used to power an oilfield drilling rig, includes a photovoltaic new energy unit, a grid power supply unit, a diesel generator unit, a rectifier unit, a bus unit, and an inverter unit. The diesel generator unit is connected to a first input terminal of the bus unit through the rectifier unit, the photovoltaic new energy unit is connected to a second input terminal of the bus unit, the output terminal of the bus unit is connected to a first input terminal of a control module through the inverter unit, the grid power supply unit is connected to a second input terminal of the control module, and the input terminal of the control module is connected to the oilfield drilling rig. The control module is used to control the power supply module to supply power to the oilfield drilling rig according to the corresponding photovoltaic power distribution, grid power distribution and diesel generator compensation power according to the preset power supply priority, thereby realizing multi-source coordinated energy control of the oilfield drilling rig; the control module includes: The load power demand acquisition unit is used to monitor the power demand of the oilfield drilling rig load side in real time, and obtain the total load power demand and real-time load power slope; A photovoltaic allocated power determination unit is used to calculate the real-time output power of the photovoltaic new energy unit based on the monitored light intensity and determine the photovoltaic allocated power; A grid-distributed power determination unit is configured to dynamically distribute the power supplied by the grid power supply unit based on the total load demand power, the photovoltaic distributed power, and the grid response coefficient, wherein the grid-distributed power distributed to the grid power supply unit is preferentially pre-compensated following the real-time load power slope; The diesel generator allocation power determination unit is used to dynamically adjust the compensation power of the diesel generator unit according to the remaining load power gap and the economic power lower limit of the diesel generator unit after the photovoltaic allocation power and the grid allocation power are met.

[0013] In a third aspect, the present invention provides a terminal, comprising: processor, memory, wherein The memory is used to store computer programs, The processor is used to call and run the computer program from the memory, so that the terminal executes the above-mentioned terminal method.

[0014] In a fourth aspect, the present invention provides a computer storage medium, wherein the computer-readable storage medium stores instructions, which, when executed on a computer, enable the computer to execute the methods described in the above aspects.

[0015] The beneficial effect of this invention lies in the multi-source coordinated energy control method and system provided by the invention for oilfield drilling rigs, which aims to address the high costs, low efficiency, and environmental pollution problems associated with traditional oilfield drilling rigs' sole reliance on diesel power generation. By real-time monitoring of the load-side power demand of the oilfield drilling rig and combining multiple energy supply methods such as photovoltaic new energy, power grid, and diesel power generation, the method and system achieve efficient, green, and stable operation of the oilfield drilling rig.

[0016] By introducing photovoltaic power units, this invention replaces some diesel power generation with renewable energy, significantly reducing fuel procurement, transportation, and maintenance costs, thereby lowering oilfield operating costs. The introduction of photovoltaic power reduces carbon emissions from diesel power generation, aligning with green, low-carbon development trends and contributing to environmental protection and sustainable development.

[0017] This invention monitors load demand in real time and dynamically allocates energy power, avoiding low-load operation of diesel generators, improving power generation equipment utilization, and reducing resource waste. Based on the remaining load power gap and the economic power lower limit of the diesel generator unit, the compensation power of the diesel generator unit is dynamically adjusted to ensure that the diesel generator unit operates within an efficient and economical power range, avoiding resource waste.

[0018] The present invention uses a preset power supply priority, and the control unit can flexibly adjust the power distribution of each energy supply unit to ensure that the oilfield drilling rig can obtain a stable and reliable power supply under different working conditions.

[0019] The power distributed by the power grid is pre-compensated according to the real-time load power slope, which improves the response speed and stability of the system and reduces the risk of equipment damage caused by power mutation.

[0020] In addition, the present invention has a reliable design principle, a simple structure and a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 A schematic flow chart of a method according to an embodiment of the present invention.

[0023] Figure 2 A schematic block diagram of a system according to an embodiment of the present invention.

[0024] Figure 3 A schematic diagram of the structure of a terminal provided by an embodiment of the present invention.

[0025] 210 is the power supply module, 211 is the photovoltaic new energy unit, 212 is the grid power supply unit, 213 is the diesel generator unit, 214 is the rectifier unit, 215 is the convergence unit, 216 is the inverter unit, 220 is the control module, 221 is the control module load power demand acquisition unit, 222 is the photovoltaic distribution power determination unit, 223 is the grid distribution power determination unit, and 224 is the diesel generator distribution power determination unit. DETAILED DESCRIPTION

[0026] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0028] Figure 1 This is a schematic flow chart of a multi-source coordinated energy control method for an oilfield drilling rig provided by the present invention. Figure 1 The execution subject may be a multi-source coordinated energy control system for an oilfield drilling rig. According to different requirements, the order of the steps in the flow chart may be changed, and some steps may be omitted.

[0029] like Figure 1As shown, the method includes: Step 110: monitor the power demand of the oilfield drilling rig load side in real time to obtain the total load power demand and the real-time load power slope; Step 120, calculating the real-time output power of the photovoltaic new energy unit based on the monitored light intensity, and determining the photovoltaic allocated power; Step 130: Dynamically allocate power to the grid power supply unit based on the total load demand power, the photovoltaic allocated power, and the grid response coefficient, wherein the grid allocated power allocated to the grid power supply unit is pre-compensated preferentially following the real-time load power slope; Step 140 , after the photovoltaic allocated power and the grid allocated power are satisfied, dynamically adjust the compensation power of the diesel generator unit according to the remaining load power gap and the economic power lower limit of the diesel generator unit; Step 150 , based on the preset power supply priority, the control unit supplies power to the oilfield drilling rig according to the corresponding photovoltaic distribution power, grid distribution power and diesel generator compensation power, thereby realizing multi-source coordinated energy control of the oilfield drilling rig.

[0030] To facilitate understanding of the present invention, the multi-source coordinated energy control method for an oilfield drilling rig provided by the present invention is further described below based on the principle of the multi-source coordinated energy control method for an oilfield drilling rig provided by the present invention and combined with the process of performing multi-source coordinated energy control on an oilfield drilling rig in an embodiment.

[0031] Specifically, the power demand of the load side of the oilfield drilling rig is monitored in real time to obtain the total load power demand and the real-time load power slope. The method includes: The power sensor installed on the load side of the oilfield drilling rig collects the current and voltage signals on the load side of the oilfield drilling rig in real time and calculates the total load power demand. ; Total power demanded by the load Perform calculus operations to obtain real-time load power slope .

[0032] High-precision composite power sensor groups are installed on the low-voltage side (0.4kV) of the main transformer of the oilfield drilling rig, the input end of each motor drive cabinet, and key energy-consuming equipment (such as mud pumps and winch motors). Each sensor group contains: Hall Effect Current Sensor (model HCS-3000A, range 0-3000A, accuracy ±0.2%): uses the open-loop magnetic balance principle and is equipped with a temperature compensation module to ensure measurement stability in an environment of -40°C to 85°C; Resistor divider voltage sensor (model RVD-1500V, range 0-1500V, accuracy ±0.1%): built-in surge protection circuit, can withstand instantaneous voltage fluctuations of ±20%; High-speed synchronous acquisition module: supports 10kHz sampling rate and time synchronization error <50ns.

[0033] In addition, a ring-shaped redundant network is constructed using an industrial-grade CAN bus, with key nodes using optical fiber for transmission, achieving a data packet loss rate of less than 0.001% and an end-to-end transmission delay of less than 2ms. Data collected by the power sensor is transmitted to the control module for calculation.

[0034] In order to ensure the consistency of the collected data, the "master clock + phase compensation" mechanism is adopted to complete 200 uniform samplings within the 50Hz power frequency cycle. 、 and , it is converted into the αβ coordinate system by Clarke transformation for unified processing: ; in, 、 and are the collected three-phase original current values ​​respectively; and is the equivalent current component in the two-phase orthogonal coordinate system after transformation. This transformation effectively eliminates the harmonic distortion caused by three-phase asymmetry and improves the accuracy of subsequent power calculations.

[0035] Construct a three-stage filtering system for analog preprocessing and digital optimization: Pre-analog filtering: A second-order Butterworth low-pass filter is used with a cutoff frequency set to 5kHz to prevent high-frequency noise interference; Digital sliding filter: A Hanning window-based FIR filter with a stopband attenuation greater than 60dB is used to further smooth the data curve.

[0036] Adaptive notch filtering: real-time tracking of the grid fundamental wave (50Hz) and its harmonic components, dynamic filtering of fixed-frequency interference, and improving signal purity.

[0037] Since the sensor has nonlinear errors, polynomial compensation is required: ; in, is the actual current value after compensation; The current value originally collected by the sensor; 、 、 and are the polynomial coefficients; is the current temperature compensation coefficient, provided by the temperature detection module integrated into the sensor. This compensation mechanism significantly improves measurement consistency under different temperature and load conditions.

[0038] Extract the voltage fundamental component through a phase-locked loop (PLL) , and combined with the measured current , calculate the instantaneous active power: ; in, is the fundamental component of the voltage; is the current signal after filtering and compensation; is the fundamental active power at a certain moment. This method solves the error problem caused by voltage distortion in traditional power calculation.

[0039] Apply complex wavelet transform to extract the 2nd to 50th harmonic components and calculate the distortion power: ; in, is the hth harmonic voltage amplitude; is the hth harmonic current amplitude; is the phase difference between the hth harmonic voltage and current; The useless power loss caused by harmonics reflects the power quality of the system and is an important basis for determining whether reactive power compensation or filtering is needed.

[0040] After adding the fundamental power and harmonic power, the average value within the 20ms power frequency period is taken as the total required power of the load: ; in, is the final calculated total load power requirement.

[0041] In addition, the real-time output power of the photovoltaic new energy unit is calculated based on the monitored light intensity, and the photovoltaic allocation power is determined. The method includes: Real-time collection of light intensity data in the oilfield area through a distributed light intensity sensor array ; Light intensity data Perform data cleaning to remove outliers caused by occlusion or sensor failure; According to the conversion efficiency of photovoltaic panels and the total area of ​​PV arrays PV parameters, calculate the real-time PV output power The calculation formula is: ; in, The maximum output power corresponding to the photovoltaic inverter in the pre-stored photovoltaic new energy unit is determined by the parameters on the nameplate of the photovoltaic inverter equipment; The calculated real-time photovoltaic output power Perform limiting processing to determine photovoltaic distribution power : When the photovoltaic real-time output power Greater than or equal to When determining the photovoltaic power distribution equal ; When the photovoltaic real-time output power Less than And when it is greater than zero, determine the photovoltaic allocated power Equal to the real-time photovoltaic output power ; When the photovoltaic real-time output power When it is less than or equal to zero, determine the photovoltaic allocated power Equal to zero.

[0042] 12 groups of distributed light intensity sensor arrays are evenly deployed on the top of the oilfield drilling platform and in the surrounding unobstructed areas (such as the top of the derrick, the roof of the living area, and the top of the equipment cabin). Each group contains 3 silicon photocell light sensors (model: BH1750FVI, range: 0-65535lx, accuracy: ±2%), which are triangularly distributed to avoid the influence of occlusion of a single sensor. The sensor is connected to the edge computing node of the on-site control cabinet through a waterproof cable to form a redundant network topology. A periodic synchronous sampling strategy is adopted, and a global sampling is triggered every 10 seconds. A single sampling includes 3 rapid measurements of each sensor (with an interval of 200ms), and the average value is taken as the original light intensity data at that moment. , unit is W / m 2 (The calibration factor is required to convert lx to W / m 2 , the conversion formula is ).

[0043] Use the 3σ rule combined with sliding window filtering to clean data: Define a 5-minute sliding window and calculate the mean μ and standard deviation σ of the light intensity within the window; For the current sample value , if satisfied , it is determined to be an outlier (possibly caused by cloud cover, temporary shadow of drilling equipment, or sensor failure); Outlier replacement strategy: If three consecutive sampling values ​​are abnormal, use the linear interpolation of the previous valid data point Fill in; if it is a single point anomaly, remove it directly and use the mean of the previous and next data instead.

[0044] To combat interference from dust, oil, and other pollutants at oilfield sites, the sensor surface is integrated with an ultrasonic cleaning module (which automatically starts once a week).

[0045] Photovoltaic panel conversion efficiency Take the factory nominal value of the photovoltaic panel (such as the typical value of a monocrystalline silicon photovoltaic panel is 22%), and make attenuation corrections based on the operating years (attenuation is 0.5% per year, the initial value is , after running for n years, it is corrected to ).

[0046] Total photovoltaic array area is the effective area of ​​the photovoltaic panels actually installed.

[0047] The actual output power of a photovoltaic new energy unit is equal to the maximum output power of the inverter minus the power loss caused by the attenuation of light intensity. The attenuation is linearly related to the conversion efficiency of the photovoltaic panel, the array area and the light intensity.

[0048] Operation scenario 1: Sunny weather (sufficient sunlight).

[0049] Initial conditions: Light intensity ; Photovoltaic panel operation life n=3 years, conversion efficiency ;Inverter maximum output power .

[0050] Power calculation: (The calculated result here is negative, indicating that the light intensity exceeds the theoretical maximum value. In practice, it is limited by the inverter capacity and enters the full power output state); , it is determined that the light intensity is too high (possibly due to sensor error or extreme weather), but according to the limiting logic, the photovoltaic power allocation is determined Equal to zero, to avoid overload of photovoltaic new energy units.

[0051] Running scene 1: cloudy day (medium light).

[0052] Initial condition: light intensity ; Photovoltaic panel conversion efficiency ;Inverter maximum output power .

[0053] Power calculation: .

[0054] because , determine the photovoltaic allocated power Equal to the real-time photovoltaic output power , which is 254kW. At this time, the photovoltaic new energy unit is operating at a load rate of 50.8%, and the remaining power demand is supplemented by grid power and diesel generation.

[0055] Furthermore, the power supply of the grid power supply unit is dynamically allocated according to the total load demand power, the photovoltaic allocation power and the grid response coefficient, wherein the grid allocation power allocated to the grid power supply unit is pre-compensated preferentially following the real-time load power slope. The method includes: Get the preset grid parameters: grid response coefficient and the maximum power supply limit of the power grid ; Power distribution based on photovoltaics , grid parameters and real-time load power slope Calculation of grid distribution power for grid supply units , and its calculation formula is: .

[0056] The grid response coefficient α characterizes the grid's ability to follow load fluctuations, with a value range of 0.5 to 1.5; the grid's maximum power supply limit Determined according to the power supply agreement signed between the oil field and the power grid, the unit is kW, and the daily power is obtained from the power grid dispatching center through the Modbus RTU protocol at 00:00 every day. Corrected value (considering peak and valley electricity price periods).

[0057] By comprehensively considering the total load demand power, photovoltaic allocation power and grid response coefficient, the present invention enables the system to more accurately calculate and allocate the power supply of the grid power supply unit. This dynamic allocation method avoids excessive or insufficient energy supply and ensures the stable operation of the oilfield drilling rig under different working conditions. The grid allocation power is preferentially pre-compensated following the real-time load power slope, so that the grid power supply can respond to the changing trend of the load power in advance, further improving the energy utilization efficiency and system stability. The introduction of the real-time load power slope enables the system to predict future changes in load power, thereby adjusting the grid power supply in advance and reducing power fluctuations caused by sudden changes in the load. By dynamically allocating grid power supply, the present invention enables the system to reduce grid power supply when the output power of the photovoltaic new energy unit is sufficient, thereby reducing electricity bills. The consideration of the maximum power supply power limit of the grid enables the system to reasonably allocate power within the power supply capacity of the grid, avoiding additional costs caused by excessive power consumption.

[0058] In addition, after the photovoltaic power allocation and the grid power allocation are met, the compensation power of the diesel generator unit is dynamically adjusted according to the remaining load power gap and the economic power lower limit of the diesel generator unit. The method includes: According to the total power demand of the load , Photovoltaic distribution power Distributing power to the grid , calculate the remaining load power gap , and its calculation formula is: ; Determine the remaining load power gap Is it greater than zero? If yes, read the pre-stored economic power lower limit of the diesel generator unit , the maximum power limit of the diesel generator unit and compensation coefficient of diesel generating units ; According to the remaining load power gap , the lower limit of economic power of diesel generator units , compensation coefficient of diesel generator unit and real-time load power slope Calculate the distributed power of diesel generating units , and its calculation formula is: ; Determine the real-time load power slope Is it greater than zero? If not, the diesel generator unit is controlled to use the economic power lower limit run; If yes, then control the diesel generator unit to distribute power according to the calculated power Run and distribute power in diesel generating units Greater than the maximum power limit of the oil power generation unit When the diesel generator unit is controlled, the maximum power limit is set. run.

[0059] By calculating the remaining load power gap, the present invention enables the system to accurately identify the amount of power that still needs to be supplemented after photovoltaic and grid power supply. This precise calculation avoids energy oversupply or undersupply, ensuring stable operation of oilfield drilling rigs under different operating conditions while improving energy utilization efficiency. Dynamically adjusting the compensation power of the diesel generator unit allows the system to flexibly adjust energy supply based on actual load demand, further optimizing energy allocation. The concept of an economic power lower limit is introduced when calculating the allocated power of the diesel generator unit. This means that the system will try to operate the diesel generator unit within its economic power range while meeting load demand, thereby reducing the power generation cost per unit power. In this way, the system can minimize energy costs while ensuring power supply reliability, improving the economic efficiency of oilfield drilling operations. In addition, the introduction of the real-time load power slope in the present invention enables the system to predict future changes in load power and adjust the compensation power of the diesel generator unit accordingly. This pre-compensation mechanism helps smooth the load power curve and reduce power fluctuations and system impacts caused by sudden load changes. When the load power slope is greater than zero, the system can preemptively increase the output power of the diesel generator unit to accommodate the impending load increase. When the load power slope is less than or equal to zero, the system can appropriately reduce the output power of the diesel generator unit to avoid energy waste. When calculating the allocated power of the diesel generator unit, the system also considers the maximum power limit of the diesel generator unit. If the calculated allocated power exceeds this limit, the system automatically limits the output power of the diesel generator unit to the maximum power limit, thereby protecting the diesel generator unit from the risk of overload damage. This protection mechanism enhances the stability and reliability of the system, ensuring the safety and continuity of the oilfield drilling rig during long-term operation.

[0060] In addition, the method includes: Determine whether the calculated photovoltaic distribution power, grid distribution power and diesel generator compensation power meet the preset balance conditions; If so, adjust the power supply priority of the photovoltaic new energy unit, the grid power supply unit and the diesel power generation unit. Specifically, the balance condition is: ; in, is the power tolerance, .

[0061] By presetting a balance condition (power deviation threshold control), the system can verify in real time the matching degree between the combined output power of photovoltaic, grid, and diesel generator units and the total load power demand. When the power deviation is within the allowable range, the current energy allocation strategy effectively meets the load demand, avoiding equipment overload or underload issues caused by power imbalance and significantly improving the system's power supply stability. During oilfield drilling operations, load demand can fluctuate rapidly due to changing operating conditions. By dynamically verifying the power balance status, the system can promptly detect and respond to power deviations and quickly restore balance by adjusting power supply priorities, thereby enhancing the system's adaptability to external interference and ensuring continuous and stable operation. Verifying the balance condition provides a quantitative basis for coordinated control of multiple energy sources. When the power allocation meets the balance condition, the system can prioritize photovoltaic power generation (zero cost), secondarily utilize grid power (which may enjoy preferential off-peak electricity prices), and finally activate diesel generation (higher cost) based on a priority adjustment strategy. This dynamic priority adjustment mechanism significantly reduces overall energy costs and improves economic efficiency. Power balance verification prevents redundant output caused by overallocation of a single energy source and prevents the frequent startup and shutdown of backup energy sources caused by underallocation. This refined control reduces energy waste, extends equipment life, and further reduces operation and maintenance costs.

[0062] Operation scenario three: sudden load change, cloudy scenario (PV is limited).

[0063] Initial condition: total load power demand , load power slope (greater than zero, indicating that the load is increasing rapidly and continuously, and the power supply needs to be increased in advance); insufficient sunlight leads to limited photovoltaic output, and the photovoltaic output power (Close to shutdown state, can be ignored); Maximum power supply limit of the power grid 800 kilowatts, the grid response coefficient is 1.0; the lower limit of the economic power of the diesel generator unit The compensation coefficient of the diesel generator unit is 200 kW is 0.5.

[0064] Based on the above initial conditions and the corresponding calculation formula, the grid distribution power of the grid power supply unit is calculated 300 kilowatts; check the maximum power supply limit of the power grid: , so the actual power distribution of the power grid is 300 kW. The remaining load gap is calculated to be 700 kW. Combining the load slope and the economic power lower limit, the diesel generator compensation power is calculated to be 300 kW.

[0065] Predicting a continued increase in load, the diesel generator unit is pre-loaded with an additional 100 kW, while meeting the economic power limit, for a final allocated power of 400 kW (this allocation may be dynamically adjusted using a compensation factor in actual distribution). The remaining load power shortfall is 700 kW, of which the diesel generator unit contributes 400 kW, leaving the grid power supply unit with 300 kW to compensate. This means the total power allocated to the grid power supply unit is 600 kW. In this scenario, the output power distribution ratio among the photovoltaic new energy unit, the grid power supply unit, and the diesel generator unit is 0:6:4.

[0066] Operation scenario four: stable load, desert oil field scenario (stable photovoltaic power generation).

[0067] Initial condition: total load power demand , load power slope (Load is stable, no pre-compensation is required); sufficient sunlight, maximum photovoltaic output power 6000 kilowatts (far exceeding the total load demand); the maximum power supply limit of the power grid 800 kilowatts, the grid response coefficient is 1.0; the lower limit of the economic power of the diesel generator unit The compensation coefficient of the diesel generator unit is 200 kW is 0.5.

[0068] Prioritize the use of photovoltaic power supply, The photovoltaic allocated power is 2000 kilowatts (photovoltaic fully meets the load demand); the load has been fully covered by photovoltaics, and the grid allocated power is zero kilowatts; the remaining load power gap is zero kilowatts, and the diesel generator unit only needs to maintain the economic power lower limit (if required by the system), and its allocated power is 200 kilowatts (or shut down).

[0069] like Figure 2 As shown, the present invention provides a multi-source coordinated energy control system for an oilfield drilling rig, including a power supply module 210 and a control module 220; the control module 220 includes a load power demand acquisition unit 221, a photovoltaic distribution power determination unit 222, a grid distribution power determination unit 223 and a diesel generator distribution power determination unit 224.

[0070] Specifically, the power supply module 210 is used to supply power to the oilfield drilling rig, and includes a photovoltaic new energy unit 211, a grid power supply unit 212, a diesel power generation unit 213, a rectifier unit 214, a confluence unit 215 and an inverter unit 216. The diesel power generation unit 213 is connected to the first input end of the confluence unit 215 through the rectifier unit 214, the photovoltaic new energy unit 211 is connected to the second input end of the confluence unit 215, the output end of the confluence unit 215 is connected to the first input end of the control module 220 through the inverter unit 216, the grid power supply unit 212 is connected to the second input end of the control module 220, and the input end of the control module 220 is connected to the oilfield drilling rig.

[0071] The control module 220 is used to control the power supply module to supply power to the oilfield drilling rig according to the corresponding photovoltaic distribution power, grid distribution power and diesel generator unit compensation power according to the preset power supply priority, thereby realizing multi-source coordinated energy control of the oilfield drilling rig.

[0072] The load power demand acquisition unit 221 is used to monitor the power demand of the oilfield drilling rig load side in real time, and obtain the total load power demand and the real-time load power slope.

[0073] The photovoltaic allocated power determination unit 222 is used to calculate the real-time output power of the photovoltaic new energy unit based on the monitored light intensity and determine the photovoltaic allocated power.

[0074] The grid allocated power determination unit 223 is used to dynamically allocate the power supply of the grid power supply unit according to the total load demand power, the photovoltaic allocated power and the grid response coefficient, wherein the grid allocated power allocated to the grid power supply unit is pre-compensated preferentially following the real-time load power slope.

[0075] The diesel generation allocation power determination unit 224 is used to dynamically adjust the compensation power of the diesel generation unit according to the remaining load power gap and the economic power lower limit of the diesel generation unit after the photovoltaic allocation power and the grid allocation power are met.

[0076] Through the collaborative calculation of photovoltaic (PV) power allocation determination units, grid power allocation determination units, and diesel generator power allocation determination units, the system can perceive load demand (total power, power slope) and the output capabilities of various energy sources in real time, dynamically adjusting power allocation strategies to ensure precise matching of power supply and load, and avoiding the risk of equipment downtime or overload caused by power imbalances. PV new energy units are connected to the control module via a confluence unit and an inverter unit. The system prioritizes PV power allocation (for example, in scenario two, when PV power generation is stable, PV power assumes the entire load), maximizing the utilization of renewable energy, reducing reliance on diesel generators, and significantly reducing carbon emissions and fuel costs.

[0077] Figure 3This is a structural diagram of a terminal 300 provided in an embodiment of the present invention. The terminal 300 can be used to execute the multi-source coordinated energy control method for an oilfield drilling rig provided in an embodiment of the present invention.

[0078] The terminal 300 may include a processor 310, a memory 320, and a communication module 330. These components communicate via one or more buses. Those skilled in the art will appreciate that the server structure shown in the figure does not limit the present invention. The server structure may be a bus structure or a star structure, and may include more or fewer components than shown, or may combine certain components or arrange the components differently.

[0079] Memory 320 can be used to store execution instructions of processor 310. Memory 320 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk. When the execution instructions in memory 320 are executed by processor 310, terminal 300 can perform some or all of the steps in the above-described method embodiments.

[0080] The processor 310 is the control center of the storage terminal. It uses various interfaces and lines to connect various parts of the entire electronic terminal. It executes various functions of the electronic terminal and / or processes data by running or executing software programs and / or modules stored in the memory 320, and calling data stored in the memory. The processor can be composed of an integrated circuit (IC), for example, it can be composed of a single packaged IC, or it can be composed of multiple packaged ICs with the same or different functions. For example, the processor 310 can only include a central processing unit (CPU). In the embodiment of the present invention, the CPU can be a single computing core or multiple computing cores.

[0081] The communication module 330 is used to establish a communication channel so that the storage terminal can communicate with other terminals, receive user data sent by other terminals, or send user data to other terminals.

[0082] The present invention also provides a computer storage medium, wherein the computer storage medium may store a program that, when executed, may include some or all of the steps of each embodiment provided herein. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

[0083] Those skilled in the art will clearly understand that the techniques in the embodiments of the present invention can be implemented using software plus a necessary general-purpose hardware platform. Based on this understanding, the technical solutions in the embodiments of the present invention, or the portion that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium such as a USB flash drive, a mobile hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, among other media capable of storing program code, and includes instructions for causing a computer terminal (which can be a personal computer, a server, or a second terminal, a network terminal, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention.

[0084] In this specification, the same or similar parts between the various embodiments can be referred to each other. In particular, for the terminal embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description in the method embodiment.

[0085] In the several embodiments provided by the present invention, it should be understood that the disclosed systems and methods can be implemented in other ways. For example, the system embodiments described above are merely illustrative. For example, the division of the modules is merely a logical function division. In actual implementation, there may be other division methods, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of systems or modules, and can be electrical, mechanical or other forms.

[0086] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules may be selected to achieve the purpose of the present embodiment according to actual needs.

[0087] In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.

[0088] Although the present invention has been described in detail with reference to the accompanying drawings and in conjunction with preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, persons of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and such modifications or substitutions shall be within the scope of the present invention. Any changes or substitutions that can be easily conceived by persons skilled in the art within the technical scope disclosed in the present invention shall be within the scope of protection of the present invention.

Claims

1. A multi-source coordinated energy control method for an oilfield drilling rig, characterized in that: include: Real-time monitoring of the power demand on the load side of the oilfield drilling rig to obtain the total load power demand and real-time load power slope; Calculate the real-time output power of the photovoltaic new energy unit based on the monitored light intensity and determine the photovoltaic allocation power; Dynamically allocate the power supply of the grid power supply unit according to the total load demand power, photovoltaic allocation power and grid response coefficient. The grid allocation power allocated to the grid power supply unit is preferentially pre-compensated according to the real-time load power slope. After the photovoltaic power allocation and the grid power allocation are met, the compensation power of the diesel generator unit is dynamically adjusted according to the remaining load power gap and the economic power lower limit of the diesel generator unit; According to the preset power supply priority, the control unit supplies power to the oilfield drilling rig according to the corresponding photovoltaic distribution power, grid distribution power and diesel generator unit compensation power, realizing multi-source coordinated energy control of the oilfield drilling rig.

2. The multi-source coordinated energy control method for an oilfield drilling rig according to claim 1, characterized in that: Real-time monitoring of the power demand on the load side of an oilfield drilling rig to obtain the total load power demand and real-time load power slope includes: The power sensor installed on the load side of the oilfield drilling rig collects the current and voltage signals on the load side of the oilfield drilling rig in real time and calculates the total load power demand. ; Total power demanded by the load Perform calculus operations to obtain real-time load power slope .

3. The multi-source coordinated energy control method for an oilfield drilling rig according to claim 2, characterized in that: The real-time output power of the photovoltaic new energy unit is calculated based on the monitored light intensity, and the photovoltaic allocated power is determined. The method includes: Real-time collection of light intensity data in the oilfield area through a distributed light intensity sensor array ; Light intensity data Perform data cleaning to remove outliers caused by occlusion or sensor failure; According to the conversion efficiency of photovoltaic panels and the total area of ​​PV arrays PV parameters, calculate the real-time PV output power The calculation formula is: ； in, The maximum output power corresponding to the photovoltaic inverter in the pre-stored photovoltaic new energy unit is determined by the parameters on the nameplate of the photovoltaic inverter equipment; The calculated real-time photovoltaic output power Perform limiting processing to determine photovoltaic distribution power : When the photovoltaic real-time output power Greater than or equal to When determining the photovoltaic power distribution equal ; When the photovoltaic real-time output power Less than And when it is greater than zero, determine the photovoltaic allocated power Equal to the real-time photovoltaic output power ; When the photovoltaic real-time output power When it is less than or equal to zero, determine the photovoltaic power distribution Equal to zero.

4. The multi-source coordinated energy control method for an oilfield drilling rig according to claim 3, characterized in that: Dynamically allocate the power supply of the grid power supply unit based on the total load demand power, the photovoltaic allocation power, and the grid response coefficient, wherein the grid allocation power allocated to the grid power supply unit is preferentially pre-compensated following the real-time load power slope. The method includes: Get the preset grid parameters: grid response coefficient and the maximum power supply limit of the power grid ; Power allocation based on photovoltaics , grid parameters and real-time load power slope Calculation of grid distribution power for grid supply units , and its calculation formula is: 。 5. The multi-source coordinated energy control method for an oilfield drilling rig according to claim 4, characterized in that: After the photovoltaic power allocation and the grid power allocation are met, the compensation power of the diesel generator unit is dynamically adjusted according to the remaining load power gap and the economic power lower limit of the diesel generator unit. The method includes: According to the total power demand of the load , Photovoltaic distribution power Distributing power to the grid , calculate the remaining load power gap , and its calculation formula is: ； Determine the remaining load power gap Is it greater than zero? If yes, read the pre-stored economic power lower limit of the diesel generator unit , the maximum power limit of the diesel generator unit and compensation coefficient of diesel generating units ; According to the remaining load power gap , the lower limit of economic power of diesel generator units , compensation coefficient of diesel generator unit and real-time load power slope Calculate the distributed power of diesel generating units , and its calculation formula is: ； Determine the real-time load power slope Is it greater than zero? If not, the diesel generator unit is controlled to use the economic power lower limit run; If yes, then control the diesel generator unit to distribute power according to the calculated power Run and distribute power in diesel generating units Greater than the maximum power limit of the oil power generation unit When the diesel generator unit is controlled, the maximum power limit is set. run.

6. The multi-source coordinated energy control method for an oilfield drilling rig according to claim 5, characterized in that: Also includes: Determine whether the calculated photovoltaic distribution power, grid distribution power and diesel generator compensation power meet the preset balance conditions; If so, adjust the power supply priorities of the photovoltaic new energy unit, the grid power supply unit, and the diesel power generation unit.

7. The multi-source coordinated energy control method for an oilfield drilling rig according to claim 6, characterized in that: The equilibrium condition is: ； in, is the power tolerance, .

8. A multi-source coordinated energy control system for an oilfield drilling rig, characterized in that: include: A power supply module, used to power an oilfield drilling rig, includes a photovoltaic new energy unit, a grid power supply unit, a diesel generator unit, a rectifier unit, a bus unit, and an inverter unit. The diesel generator unit is connected to a first input terminal of the bus unit through the rectifier unit, the photovoltaic new energy unit is connected to a second input terminal of the bus unit, the output terminal of the bus unit is connected to a first input terminal of a control module through the inverter unit, the grid power supply unit is connected to a second input terminal of the control module, and the input terminal of the control module is connected to the oilfield drilling rig. The control module is used to control the power supply module to supply power to the oilfield drilling rig according to the corresponding photovoltaic power distribution, grid power distribution and diesel generator compensation power according to the preset power supply priority, thereby realizing multi-source coordinated energy control of the oilfield drilling rig; the control module includes: The load power demand acquisition unit is used to monitor the power demand of the oilfield drilling rig load side in real time, and obtain the total load power demand and real-time load power slope; A photovoltaic allocated power determination unit is used to calculate the real-time output power of the photovoltaic new energy unit based on the monitored light intensity and determine the photovoltaic allocated power; A grid-distributed power determination unit is configured to dynamically distribute the power supplied by the grid power supply unit based on the total load demand power, the photovoltaic distributed power, and the grid response coefficient, wherein the grid-distributed power distributed to the grid power supply unit is preferentially pre-compensated following the real-time load power slope; The diesel generator allocation power determination unit is used to dynamically adjust the compensation power of the diesel generator unit according to the remaining load power gap and the economic power lower limit of the diesel generator unit after the photovoltaic allocation power and the grid allocation power are met.

9. A terminal, characterized in that: include: processor; a memory for storing execution instructions of the processor; The processor is configured to execute the method according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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