A method for online acquisition of fuel consumption of oil and gas production diesel storage hybrid system

Abstract

The present invention discloses a method for online acquisition of fuel consumption for an oil and gas production diesel-storage hybrid system, comprising the steps of: (S100) establishing a functional relationship between fuel consumption and power based on a diesel generator's power and fuel consumption curve; (S200) utilizing this functional relationship to acquire total fuel consumption before energy storage is connected; and (S300) utilizing this functional relationship to acquire total fuel consumption after energy storage is connected. The method also comprises the steps of: (S400) comparing the total fuel consumption of the diesel generator before energy storage is connected with the total fuel consumption of the diesel generator after energy storage is connected to obtain fuel consumption results for the oil and gas production diesel-storage hybrid system. Based on real-time online data during operation, the present invention significantly improves the accuracy and real-time nature of fuel consumption data acquisition for the oil and gas production diesel-storage hybrid system.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil and gas production diesel storage hybrid systems, and in particular relates to an online method for obtaining fuel consumption of an oil and gas production diesel storage hybrid system. Background Art

[0002] With oil and gas resources becoming increasingly scarce, improving extraction efficiency and reducing energy consumption have become key goals for the oil and gas industry. Diesel-storage hybrid systems, as advanced power solutions, have been widely adopted in oil and gas production. However, obtaining accurate, real-time fuel consumption data from these systems and optimizing management accordingly remains a major challenge for the industry.

[0003] The efficiency of a diesel generator set is related to its load factor. Generally, the higher the load factor, the higher the oil-to-electricity conversion efficiency. However, in actual use, due to random load fluctuations, a situation often occurs where a large horse pulls a small cart, resulting in low overall diesel generator efficiency and significant diesel waste. Electrochemical energy storage systems can serve as both a power source and a load, forming a microgrid with diesel generators. This allows for adjustment of the diesel generator's load factor, thereby improving oil-to-electricity conversion efficiency and conserving diesel fuel. The economic benefits of a diesel-to-electricity storage system primarily depend on fuel savings, but the lack of effective measurement methods makes it difficult to measure actual fuel savings.

[0004] Currently, fuel-saving results are mostly achieved through experimental comparisons and theoretical calculations. Due to constant changes in the environment and load, operating conditions can differ significantly from test conditions. Theoretical calculations are based on historical data and require approximations of power, fuel consumption, and other information during the study period, leading to significant deviations. Summary of the Invention

[0005] In order to solve the above problems, the present invention proposes a method for online acquisition of fuel consumption of an oil and gas production diesel storage hybrid system. The present invention is based on real-time online data during operation, which can greatly improve the accuracy and real-time performance of obtaining fuel consumption data of the oil and gas production diesel storage hybrid system.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a method for online acquisition of fuel consumption of an oil and gas production diesel storage hybrid system, comprising the steps of:

[0007] S100, establishing a functional relationship between fuel consumption and power based on the power and fuel consumption curve of the diesel generator;

[0008] S200, using the functional relationship between fuel consumption and power to obtain the total fuel consumption before energy storage is connected, including the following steps:

[0009] S201, obtaining the diesel generator operating fuel consumption before energy storage is connected;

[0010] S202, obtaining the diesel generator startup fuel consumption before energy storage is connected;

[0011] S203, adding the diesel generator operating fuel consumption and the diesel generator startup fuel consumption before the energy storage is connected to obtain the total fuel consumption of the diesel generator before the energy storage is connected;

[0012] S300, using the functional relationship between fuel consumption and power, obtains the total fuel consumption after energy storage is connected, including the following steps:

[0013] S301, obtaining the diesel generator operating fuel consumption after energy storage is connected;

[0014] S302, obtaining the diesel generator startup fuel consumption after energy storage is connected;

[0015] S303, adding the diesel generator operating fuel consumption after energy storage is connected and the diesel generator starting fuel consumption after energy storage is connected to obtain the total fuel consumption of the diesel generator after energy storage is connected;

[0016] At step S400, the total fuel consumption of the diesel generator before and after the energy storage is connected is compared to obtain the fuel consumption results of the oil and gas production diesel-storage hybrid system.

[0017] Furthermore, according to the power and fuel consumption curve of the diesel generator, a corresponding functional relationship between power and fuel consumption rate is established, which is a piecewise function:

[0018]

[0019] Where n is the total number of stages, (a k ,a k+1 ) is the range of the independent variable of the function at each stage, y k (k=1,2,…,n) is the function expression of the corresponding stage;

[0020] To obtain each point y k The fuel consumption value corresponding to the power is obtained by piecewise linear interpolation.

[0021] Furthermore, let the power at time t be P(t), when P(t)∈(a k ,a k+1 ), the fuel consumption value is obtained by linear interpolation:

[0022]

[0023] Furthermore, the diesel generator fuel consumption before energy storage is connected is obtained, including:

[0024] The total load power at time t is P(t), and the number of working diesel generators is N(t). Indicates the power of each working diesel generator. According to the relationship between power and fuel consumption, power The corresponding fuel consumption is Therefore, the fuel consumption required for a diesel generator to work for 1 second at time t is calculated as:

[0025]

[0026] The total fuel consumption required for N(t) diesel generators to work for 1 second at time t is:

[0027]

[0028] Then the total diesel generator fuel consumption in the time period [0, T] is:

[0029]

[0030] Furthermore, the diesel generator startup fuel consumption before energy storage is connected is obtained, including:

[0031] The diesel generator startup is the process from receiving the startup command to loading. Since the number of startup times of the jth diesel generator in the [0, T] time period is θ j , the number of starts of n diesel generators is Each start time is τ seconds, and the fuel consumption is C liters per hour. The starting fuel consumption of a single diesel generator once is: Then the total diesel generator starting fuel consumption in the [0, T] time period is:

[0032]

[0033] Furthermore, the diesel generator fuel consumption after energy storage access includes:

[0034] The power provided by the energy storage at time t after the energy storage is connected is I(t). A positive I(t) indicates discharge, and a negative I(t) indicates charge. The total load power at time t is P(t). The power provided by the diesel generator is P(t)-I(t). The number of diesel generators operating at time t is M(t).

[0035] At time t, the working state of the jth diesel generator is M j (t), M j (t)=1 means it is in working state, M j (t) = 0 indicates the stopped state; then:

[0036] After energy storage is connected, the output power of each diesel generator at time t is Corresponding fuel consumption The total fuel consumption of the diesel generator in 1 second at time t is:

[0037]

[0038] Then the total diesel generator fuel consumption in the [0, T] time period is:

[0039]

[0040] Furthermore, the diesel generator startup fuel consumption after energy storage access includes:

[0041] The number of times the jth diesel generator is started after energy storage is connected t∈[0,T]λ j , the number of starts among n diesel generators is Each start-up time is τ seconds, and the fuel consumption is C liters per hour. The fuel consumption of a single diesel generator is:

[0042] The fuel consumption of starting the diesel generator after energy storage is connected is:

[0043]

[0044] Furthermore, by comparing the total fuel consumption of the diesel generator before and after energy storage integration, the fuel consumption results of the oil and gas production diesel-storage hybrid system were obtained, including:

[0045] Fuel saving rate:

[0046]

[0047] The total fuel consumption before the diesel generator is connected is O, which is the sum of the diesel generator's operating fuel consumption and starting fuel consumption: O = O f +O s ;

[0048] The total fuel consumption after energy storage is connected is O', which is the sum of the diesel generator's operating fuel consumption and starting fuel consumption after energy storage is connected: O' = O' f +O' s .

[0049] The beneficial effects of adopting this technical solution are:

[0050] This invention establishes a real-time online power and fuel consumption calculation method based on the relationship between power consumption and fuel consumption in a diesel-storage hybrid system for oil and gas production. Based on real-time online data during operation, this method obtains diesel consumption before and after energy storage is connected, providing real-time information on fuel consumption and fuel efficiency. This method significantly improves the accuracy and real-time performance of fuel consumption in oil and gas production diesel-storage hybrid systems, enhancing fuel consumption assessment effectiveness. This method not only improves the efficiency and safety of oil and gas production, but also significantly reduces fuel consumption and operating costs, contributing to the sustainable development of the oil and gas industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a flow chart of a method for online acquisition of fuel consumption of a hybrid system for oil and gas production and diesel storage according to the present invention;

[0052] Figure 2 Schematic diagram of piecewise linear interpolation in an embodiment of the present invention. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described below with reference to the accompanying drawings.

[0054] In this embodiment, see Figure 1 As shown, the present invention proposes an online method for obtaining fuel consumption of an oil and gas production diesel storage hybrid system, comprising the following steps:

[0055] S100, establishing a functional relationship between fuel consumption and power based on a power and fuel consumption curve of the diesel generator;

[0056] S200, using the functional relationship between fuel consumption and power to obtain the total fuel consumption before energy storage is connected, including the following steps:

[0057] S201, obtaining the diesel generator operating fuel consumption before energy storage is connected;

[0058] S202, obtaining the diesel generator startup fuel consumption before energy storage is connected;

[0059] S203, adding the diesel generator operating fuel consumption and the diesel generator startup fuel consumption before the energy storage is connected to obtain the total fuel consumption of the diesel generator before the energy storage is connected;

[0060] S300, using the functional relationship between fuel consumption and power, obtains the total fuel consumption after energy storage is connected, including the following steps:

[0061] S301, obtaining the diesel generator operating fuel consumption after energy storage is connected;

[0062] S302, obtaining the diesel generator startup fuel consumption after energy storage is connected;

[0063] S303, adding the diesel generator operating fuel consumption after energy storage is connected and the diesel generator starting fuel consumption after energy storage is connected to obtain the total fuel consumption of the diesel generator after energy storage is connected;

[0064] At step S400, the total fuel consumption of the diesel generator before and after the energy storage is connected is compared to obtain the fuel consumption results of the oil and gas production diesel-storage hybrid system.

[0065] As an optimization solution of the above embodiment, based on Figure 2As shown, according to the power and fuel consumption curve of the diesel generator, the corresponding functional relationship between power and fuel consumption rate is established, which is a piecewise function:

[0066]

[0067] Where n is the total number of stages, (a k ,a k+1 ) is the range of the independent variable of the function at each stage, y k (k=1,2,…,n) is the function expression of the corresponding stage;

[0068] To obtain each point y k The fuel consumption value corresponding to the power is obtained by piecewise linear interpolation.

[0069] Specifically, let the power at time t be P(t), when P(t)∈(a k ,a k+1 ), the fuel consumption value is obtained by linear interpolation:

[0070]

[0071] As an optimization solution of the above embodiment, for step S200, the total fuel consumption before energy storage is connected is obtained by using the functional relationship between fuel consumption and power, including the following steps:

[0072] S201: Obtain the diesel generator fuel consumption before energy storage is connected, including:

[0073] The total load power at time t is P(t), and the number of working diesel generators is N(t). Indicates the power of each working diesel generator. According to the relationship between power and fuel consumption, power The corresponding fuel consumption is Therefore, the fuel consumption required for a diesel generator to work for 1 second at time t is calculated as:

[0074]

[0075] The total fuel consumption required for N(t) diesel generators to work for 1 second at time t is:

[0076]

[0077] Then the total diesel generator fuel consumption in the time period [0, T] is:

[0078]

[0079] S202: Obtain the diesel generator startup fuel consumption before energy storage is connected, including:

[0080] The diesel generator startup is the process from receiving the startup command to loading. Since the number of startup times of the jth diesel generator in the [0, T] time period is θ j , the number of starts of n diesel generators is Each start time is τ seconds, and the fuel consumption is C liters per hour. The starting fuel consumption of a single diesel generator once is: Then the total diesel generator starting fuel consumption in the [0, T] time period is:

[0081]

[0082] S203: Add the diesel generator operating fuel consumption and the diesel generator startup fuel consumption before energy storage is connected to obtain the total fuel consumption of the diesel generator before energy storage is connected:

[0083]

[0084] As an optimization solution of the above embodiment, for step S300, the total fuel consumption after energy storage is connected is obtained by using the functional relationship between fuel consumption and power, including the following steps:

[0085] S301, obtaining the diesel generator fuel consumption after energy storage is connected, including:

[0086] The power provided by the energy storage at time t after the energy storage is connected is I(t). A positive I(t) indicates discharge, and a negative I(t) indicates charge. The total load power at time t is P(t). The power provided by the diesel generator is P(t)-I(t). The number of diesel generators operating at time t is M(t).

[0087] At time t, the working state of the jth diesel generator is M j (t), M j (t)=1 means it is in working state, M j (t) = 0 indicates the stopped state; then:

[0088] After energy storage is connected, the output power of each diesel generator at time t is Corresponding fuel consumption The total fuel consumption of the diesel generator in 1 second at time t is:

[0089]

[0090] Then the total diesel generator fuel consumption in the [0, T] time period is:

[0091]

[0092] S302, obtaining the diesel generator startup fuel consumption after energy storage is connected includes:

[0093] The number of times the jth diesel generator is started after energy storage is connected t∈[0,T]λ j , the number of starts among n diesel generators is Each start-up time is τ seconds, and the fuel consumption is C liters per hour. The fuel consumption of a single diesel generator is:

[0094] The fuel consumption of starting the diesel generator after energy storage is connected is:

[0095]

[0096] S303: Add the diesel generator operating fuel consumption after energy storage is connected and the diesel generator startup fuel consumption after energy storage is connected to obtain the total fuel consumption of the diesel generator after energy storage is connected:

[0097]

[0098] As an optimization solution for the above embodiment, for step S400, the total fuel consumption of the diesel generator before and after energy storage is connected is compared to obtain the fuel consumption results of the oil and gas production diesel-storage hybrid system, including:

[0099] Fuel saving rate:

[0100]

[0101] The total fuel consumption before the diesel generator is connected is O, which is the sum of the diesel generator's operating fuel consumption and starting fuel consumption: O = O f +O s ;

[0102] The total fuel consumption after energy storage is connected is O', which is the sum of the diesel generator's operating fuel consumption and starting fuel consumption after energy storage is connected: O' = O' f +O' s .

[0103] Conventional methods measure actual diesel consumption using flow meters, but this method cannot simultaneously measure diesel consumption before and after energy storage integration, making it impossible to compare fuel savings. This method, based on the relationship between diesel generator power and fuel consumption, calculates real-time power and fuel consumption, improving measurement accuracy and visibility, facilitating energy-saving evaluation of diesel storage systems. Furthermore, real-time fuel-saving data can guide adjustments to control strategies to achieve greater benefits.

[0104] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for online acquisition of fuel consumption of an oil and gas production diesel storage hybrid system, characterized in that: Including steps: S100, based on the power and fuel consumption curve of the diesel generator, establish a functional relationship between fuel consumption and power, which is a piecewise function: Where m is the total number of stages, (a k ,α k+1 ) is the range of the independent variable of the function at each stage, y k is the function expression of the corresponding stage, where k = 1, 2, 3...m; To obtain each point y k The function expression of is used to obtain the fuel consumption value corresponding to the power by piecewise linear interpolation; Assume that the power at time t is P(t), when P(t)∈(a k ,a k+1 ), the fuel consumption value is obtained by linear interpolation: S200, using the functional relationship between fuel consumption and power to obtain the total fuel consumption before energy storage is connected, including the following steps: S201: Obtain the diesel generator fuel consumption before energy storage is connected, including: The total load power at time t is P(t), and the number of working diesel generators is N(t). Indicates the power of each working diesel generator. According to the relationship between power and fuel consumption, power The corresponding fuel consumption is Therefore, the fuel consumption required for a diesel generator to work for 1 second at time t is calculated as: The total fuel consumption required for N(t) diesel generators to work for 1 second at time t is: Then the total diesel generator fuel consumption in the time period [0, T] is: S202: Obtain the diesel generator startup fuel consumption before energy storage is connected, including: The diesel generator startup is the process from receiving the startup command to loading. Since the number of startup times of the jth diesel generator in the [0, T] time period is θ j , the number of starts of n diesel generators is Each start time is τ seconds, and the fuel consumption is C liters per hour. The starting fuel consumption of a single diesel generator once is: Then the total diesel generator starting fuel consumption in the [0, T] time period is: S203, adding the diesel generator operating fuel consumption and the diesel generator startup fuel consumption before the energy storage is connected to obtain the total fuel consumption of the diesel generator before the energy storage is connected; S300, using the functional relationship between fuel consumption and power, obtains the total fuel consumption after energy storage is connected, including the following steps: S301: Obtain the diesel generator fuel consumption after energy storage is connected, including: The power provided by the energy storage at time t after the energy storage is connected is I(t). A positive I(t) indicates discharge, and a negative I(t) indicates charge. The total load power at time t is P(t). The power provided by the diesel generator is P(t)-I(t). The number of diesel generators operating at time t is M(t). At time t, the working state of the jth diesel generator is M j (t), M j (t)=1 means it is in working state, M j (t) = 0 indicates the stopped state; then: After energy storage is connected, the output power of each diesel generator at time t is Corresponding fuel consumption The total fuel consumption of the diesel generator in 1 second at time t is: Then the total diesel generator fuel consumption in the [0, T] time period is: S302: Obtain the diesel generator startup fuel consumption after energy storage is connected, including: The number of times the jth diesel generator is started after energy storage is connected t∈[0,T]λ j , the number of starts among n diesel generators is Each start-up time is T seconds, and the fuel consumption is C liters per hour. The fuel consumption of a single diesel generator is: The fuel consumption of starting the diesel generator after energy storage is connected is: S303, adding the diesel generator operating fuel consumption after energy storage is connected and the diesel generator starting fuel consumption after energy storage is connected to obtain the total fuel consumption of the diesel generator after energy storage is connected; At step S400, the total fuel consumption of the diesel generator before and after the energy storage is connected is compared to obtain the fuel consumption results of the oil and gas production diesel-storage hybrid system.

2. The method for online acquisition of fuel consumption of an oil and gas production diesel storage hybrid system according to claim 1, characterized in that: Comparing the total fuel consumption of the diesel generator before and after energy storage integration reveals the fuel consumption results of the oil and gas production diesel-storage hybrid system, including: Fuel saving rate: The total fuel consumption before the diesel generator is connected is O, which is the sum of the diesel generator's operating fuel consumption and starting fuel consumption: O = O f +O s ; The total fuel consumption after energy storage is connected is O', which is the sum of the diesel generator's operating fuel consumption and starting fuel consumption after energy storage is connected: O' = O' f +O' s .

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