Control method and application of special power supply networking system of petroleum and natural gas booster station

Abstract

The invention discloses a control method and application of a special power supply networking system of a petroleum and natural gas booster station, and relates to the technical field of automatic control of the special power supply networking system of the petroleum and natural gas booster station. The real-time frequency and the real-time frequency deviation of the power supply unit are obtained, the virtual inertia is calculated based on the real-time frequency, the damping coefficient is calculated based on the real-time frequency deviation, an adjusting instruction is output based on the virtual inertia and the damping coefficient, and the adjusting instruction is used for adjusting the output power of the power supply unit so as to adjust the phase of the power supply unit. And the phases of all the power supply units are equal. The problems of low reliability, low flexibility, low expansion capability and high maintenance cost of a physical synchronization mechanism can be solved, and compared with a traditional control strategy, the stability, the reliability, the adaptability and the robustness can be further effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of automatic control of a special power supply networking system for a petroleum and natural gas boosting station, and in particular to a control method and application of a special power supply networking system for a petroleum and natural gas boosting station. Background Art

[0002] The special power supply networking system for oil and gas booster stations, especially the special power supply networking system for oil and gas booster stations in areas far away from the main power grid, needs to operate stably under extreme environmental conditions and working conditions, and faces challenges such as strong winds, temperature fluctuations, large current shocks, and long-term high overload operation. At present, multiple power supply units are often used in parallel to form a special power supply networking system for oil and gas booster stations. Each power supply unit is a special power supply for oil and gas booster stations (i.e., a special power supply used in oil and gas booster stations). The traditional special power supply networking system for oil and gas booster stations mainly relies on a physical synchronization mechanism (with an interconnected signal line control method) to maintain the stability of multiple power supply units in parallel. However, under harsh conditions, the physical connection is easily damaged, so the physical synchronization mechanism may fail due to the influence of the environment and working conditions, thereby reducing the reliability and efficiency of the special power supply networking system for oil and gas booster stations. In addition, due to the need for physical connection, this parallel method that relies on physical connection not only increases maintenance costs, but also limits flexibility and expansion capabilities.

[0003] The introduction of virtual synchronous generator (VSG) control strategy and droop control strategy provides an advanced solution for the special power grid system of oil and gas booster stations without physical synchronization, aiming to improve the reliability, adaptability, robustness, flexibility and scalability of the special power grid system of oil and gas booster stations, while reducing maintenance costs. However, although these control strategies provide significant improvements in theory, they still face challenges in practical applications. The VSG control strategy requires complex parameter adjustment and real-time computing capabilities, while the droop control strategy may not respond quickly and effectively when dealing with dynamic changes in multiple sources, especially in extreme load fluctuations or sudden failures. These problems show that although the current control strategies have the potential to improve adaptability and reduce physical dependence, further optimization is still needed to meet the special needs of oil and gas booster stations. Summary of the invention

[0004] The purpose of this application is to provide a control method and application of a special power supply network system for an oil and gas booster station, which can further effectively improve stability, reliability, adaptability and robustness.

[0005] To achieve the above objectives, this application provides the following solutions:

[0006] In a first aspect, the present application provides a control method for a special power supply networking system for a petroleum and natural gas booster station, wherein the special power supply networking system for a petroleum and natural gas booster station includes a plurality of power supply units connected in parallel, and the control method for the special power supply networking system for a petroleum and natural gas booster station includes:

[0007] Acquire the real-time frequency and real-time frequency deviation of each power supply unit; the real-time frequency deviation is the difference between the grid frequency of the grid to which the power supply unit is connected and the load frequency of the load to which the power supply unit is connected;

[0008] For each power supply unit, a virtual inertia is calculated based on the real-time frequency; a damping coefficient is calculated based on the real-time frequency deviation; an adjustment instruction is output based on the virtual inertia and the damping coefficient; the adjustment instruction is used to adjust the output power of the power supply unit to adjust the phase of the power supply unit so that the phase of each power supply unit is equal.

[0009] Optionally, the virtual inertia is calculated based on the real-time frequency, specifically comprising: taking the real-time frequency as input, and calculating the virtual inertia using a virtual inertia calculation formula;

[0010] The virtual inertia calculation formula is:

[0011] J eff (t) = J0 + ΔJ·f(ω(t));

[0012] Among them, J eff (t) is the virtual inertia at time t; J0 is the initial virtual inertia; ΔJ is the virtual inertia increment; f(ω(t)) is the first adjustment function for adjusting the virtual inertia according to the real-time frequency; ω(t) is the real-time frequency at time t.

[0013] Optionally, the first adjustment function is:

[0014] f(ω(t))=k(ω ref -ω(t));

[0015] Where k is the proportionality coefficient; ω ref is the reference frequency.

[0016] Optionally, based on the real-time frequency deviation, calculating the damping coefficient specifically includes: taking the real-time frequency deviation as input, and calculating the damping coefficient using a damping coefficient calculation formula;

[0017] The damping coefficient calculation formula is:

[0018] D eff (t) = D0 + ΔD·g(Δω(t));

[0019] Among them, Deff (t) is the damping coefficient at time t; D0 is the initial damping coefficient; ΔD is the damping coefficient increment; g(Δω(t)) is the second adjustment function for adjusting the damping coefficient according to the real-time frequency deviation; Δω(t) is the real-time frequency deviation at time t.

[0020] Optionally, the second adjustment function is:

[0021] g(Δω(t))=h·Δω(t);

[0022] Among them, h is the adjustment factor.

[0023] Optionally, the calculation formula for determining the adjustment instruction is:

[0024]

[0025]

[0026] in, is the first-order derivative of the phase of the power supply unit at time t; θ(t) is the phase of the power supply unit at time t; ω1(t) is the angular frequency of the power supply unit at time t; is the first-order derivative of the angular frequency of the power supply unit at time t; J eff (t) is the virtual inertia at time t; P m is the input power of the power supply unit; P e is the output power of the power supply unit; D eff (t) is the damping coefficient at time t; ω(t) is the real-time frequency at time t.

[0027] In a second aspect, the present application provides a control device for a special power supply networking system for a petroleum and natural gas booster station, the control device for the special power supply networking system for a petroleum and natural gas booster station comprising:

[0028] A data acquisition module, used to acquire the real-time frequency and real-time frequency deviation of each power supply unit; the real-time frequency deviation is the difference between the grid frequency of the grid to which the power supply unit is connected and the load frequency of the load to which the power supply unit is connected;

[0029] The synchronous control module is used to calculate the virtual inertia for each power supply unit based on the real-time frequency; calculate the damping coefficient based on the real-time frequency deviation; output an adjustment instruction based on the virtual inertia and the damping coefficient; the adjustment instruction is used to adjust the output power of the power supply unit to adjust the phase of the power supply unit so that the phase of each power supply unit is equal.

[0030] In a third aspect, the present application provides a computer device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the control method of the special power supply networking system for an oil and gas boosting station as described above.

[0031] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the control method for the special power supply networking system of an oil and gas boosting station as described in any one of the above.

[0032] In a fifth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the control method of the special power supply networking system of the oil and gas boosting station described in any one of the above.

[0033] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0034] The present application provides a control method and application of a special power supply network system for a petroleum and natural gas booster station. For each power supply unit in the special power supply network system for a petroleum and natural gas booster station, the real-time frequency and real-time frequency deviation of the power supply unit are obtained, virtual inertia is calculated based on the real-time frequency, damping coefficient is calculated based on the real-time frequency deviation, and adjustment instructions are output based on the virtual inertia and damping coefficient. The adjustment instructions are used to adjust the output power of the power supply unit to adjust the phase of the power supply unit so that the phase of each power supply unit is equal. In the present application, there is no need to physically connect the multiple power supply units, which solves the problems of low reliability, low flexibility, low expansion capability and high maintenance cost of the physical synchronization mechanism. When controlling a single power supply unit, the real-time frequency of the power supply unit, the grid frequency of the grid to which the power supply unit is connected, and the load frequency of the load to which the power supply unit is connected are fully considered, and the virtual inertia and damping coefficient are calculated, and then further adjusted based on the virtual inertia and damping coefficient. Compared with the traditional control strategy, it can further effectively improve stability, reliability, adaptability and robustness. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 This is an application environment diagram of a control method for a special power supply networking system for a petroleum and natural gas boosting station provided in Example 1 of the present application.

[0037] Figure 2 A flow chart of a control method for a special power supply networking system for a petroleum and natural gas boosting station provided in Example 1 of the present application.

[0038] Figure 3 A schematic diagram of the principles of a control method for a special power supply networking system for a petroleum and natural gas boosting station provided in Example 1 of the present application.

[0039] Figure 4 A detailed flow chart of a control method for a special power supply networking system for a petroleum and natural gas boosting station provided in Example 1 of the present application.

[0040] Figure 5 A schematic diagram of the functional modules of a control device for a special power supply networking system for a petroleum and natural gas boosting station provided in Example 2 of the present application.

[0041] Figure 6 A schematic diagram of the structure of a computer device provided in Example 3 of the present application. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] Example 1

[0044] The control method of the special power supply network system of the oil and gas booster station provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. Among them, the terminal communicates with the server through the network. The data storage system can store the data that the server needs to process. The data storage system can be set up separately, integrated on the server, or placed on the cloud or other servers. The terminal can send the real-time frequency and real-time frequency deviation of each power supply unit to be processed to the server. After the server receives the real-time frequency and real-time frequency deviation of each power supply unit to be processed, for each power supply unit to be processed, the server calculates the virtual inertia based on the real-time frequency; calculates the damping coefficient based on the real-time frequency deviation; outputs the adjustment instruction based on the virtual inertia and the damping coefficient, and the adjustment instruction is used to adjust the output power of the power supply unit to adjust the phase of the power supply unit so that the phase of each power supply unit is equal. The server can feedback the adjustment instruction of each power supply unit to the terminal.

[0045] In addition, in some embodiments, the control method of the special power supply networking system of the oil and gas booster station can also be implemented independently by a server or a terminal. For example, the terminal can directly process the real-time frequency and real-time frequency deviation of each power supply unit to be processed, or the server can obtain the real-time frequency and real-time frequency deviation of each power supply unit to be processed from the data storage system, and process the real-time frequency and real-time frequency deviation of each power supply unit to be processed.

[0046] The terminal may be, but is not limited to, various desktop computers, laptops, smart phones, tablet computers, IoT devices, and portable wearable devices. The server may be implemented as an independent server or a server cluster consisting of multiple servers, or may be a cloud server.

[0047] like Figure 2 As shown, a control method for a special power supply network system for a petroleum and natural gas booster station is provided. The method is executed by a computer device, and can be executed by a computer device such as a terminal or a server alone, or by a terminal and a server together. In the embodiment of the present application, the method is applied to Figure 1 The server in the example is used to illustrate the following steps:

[0048] Step S1, obtaining the real-time frequency and real-time frequency deviation of each power supply unit; the real-time frequency deviation is the difference between the grid frequency of the grid to which the power supply unit is connected and the load frequency of the load to which the power supply unit is connected.

[0049] Step S2, for each power supply unit, based on the real-time frequency, calculate the virtual inertia; based on the real-time frequency deviation, calculate the damping coefficient; based on the virtual inertia and the damping coefficient, output an adjustment instruction; the adjustment instruction is used to adjust the output power of the power supply unit to adjust the phase of the power supply unit so that the phase of each power supply unit is equal.

[0050] The above-mentioned steps S1 to S2 are implemented. This embodiment is aimed at the special power supply networking system for oil and gas boosting stations. For each power supply unit in the special power supply networking system for oil and gas boosting stations, the real-time frequency and real-time frequency deviation of the power supply unit are obtained, the virtual inertia is calculated based on the real-time frequency, the damping coefficient is calculated based on the real-time frequency deviation, and the output power of the power supply unit is adjusted based on the virtual inertia and the damping coefficient to adjust the phase of the power supply unit so that the phase of each power supply unit is equal. There is no need to physically connect multiple power supply units, so as to solve the problems of low reliability, low flexibility, low expansion capability and high maintenance cost of the physical synchronization mechanism. When controlling a single power supply unit, the real-time frequency of the power supply unit, the grid frequency of the power grid to which the power supply unit is connected, and the load frequency of the load to which the power supply unit is connected are fully considered to calculate the virtual inertia and the damping coefficient, and then further adjust based on the virtual inertia and the damping coefficient. Compared with traditional control strategies, the stability, reliability, adaptability and robustness can be further effectively improved.

[0051] like Figure 3 As shown in the figure, the traditional virtual synchronous generator control strategy includes a voltage regulation unit, an excitation model, an electrical control unit, a prime mover regulation unit and a phase precise synchronization control link. The voltage regulation unit is used to output a voltage setting value U set , the excitation model is used based on the voltage setpoint U set Output voltage reference value U ref , the prime mover regulation unit is used to output active power P m , with active power P m As the input power of the power supply unit, the phase precise synchronization control link is used to m Output phase θ, the electrical control unit is used based on the voltage reference value U refand phase θ for subsequent electrical control. Since the traditional virtual synchronous generator control strategy has frequency inertia, it can realize parallel connection without interconnection communication lines. The control method of a special power supply network system for a petroleum and natural gas booster station provided in this embodiment adopts an improved virtual synchronous generator control strategy composed of a dynamic inertia adjustment link, an adaptive damping characteristic optimization link, and a phase precise synchronization control link. Compared with the traditional virtual synchronous generator control strategy, a dynamic inertia adjustment link and an adaptive damping characteristic optimization link are added, and the working process of the phase precise synchronization control link is further optimized, with higher flexibility and stronger performance. Among them, the dynamic inertia adjustment link increases or decreases the virtual inertia according to the real-time load demand and the grid frequency fluctuation, and provides the dynamic virtual inertia to the phase precise synchronization control link, so as to absorb or release energy more effectively to maintain the stability of the special power supply network system for the petroleum and natural gas booster station. The adaptive damping characteristic optimization link optimizes the damping coefficient according to the real-time grid frequency fluctuation and the load frequency fluctuation, and provides the dynamic damping coefficient to the phase precise synchronization control link, so as to suppress the potential voltage and frequency oscillation, and improve the response speed and stability of the special power supply network system for the petroleum and natural gas booster station. The phase-precise synchronization control link can ensure that all parallel power supply units can achieve seamless angular frequency and phase matching under any working conditions. It can also monitor and adjust the angular frequency and phase differences in real time to cope with sudden load changes or changes in environmental factors, thereby improving the stability of the special power supply networking system of the oil and gas booster station.

[0052] In this embodiment, the dynamic inertia adjustment link is specifically used to complete the step of calculating and obtaining the virtual inertia based on the real-time frequency in S2.

[0053] In S2, the virtual inertia is calculated based on the real-time frequency, which specifically includes: taking the real-time frequency as input, and using the virtual inertia calculation formula to calculate the virtual inertia.

[0054] The calculation formula of virtual inertia is:

[0055] J eff (t) = J0 + ΔJ·f(ω(t)) (1)

[0056] In formula (1), J eff (t) is the time-varying effective virtual inertia, specifically the virtual inertia at time t; J0 is the initial virtual inertia, i.e., the basic virtual inertia; ΔJ is the adjustable virtual inertia increment, which is the adjustment range of the virtual inertia; f(ω(t)) is a function that adjusts the virtual inertia according to frequency changes, specifically a first adjustment function that adjusts the virtual inertia according to the real-time frequency; ω(t) is the real-time frequency at time t.

[0057] The first adjustment function can be designed as needed. Here, this embodiment provides an example, where the first adjustment function is:

[0058] f(ω(t))=k(ω ref -ω(t)) (2)

[0059] In formula (2), k is the proportionality coefficient; ω ref is the reference frequency.

[0060] Changes in load power (active power) directly drive changes in the output frequency of a single power supply unit. Positive active power will reduce the output frequency, and negative active power will increase the output frequency. Changes in grid frequency will also directly drive changes in the output frequency of a single power supply unit. When the output frequency changes, the inertia parameters (i.e., virtual inertia) will also change to adapt to the current operating conditions.

[0061] In this embodiment, the adaptive damping characteristic optimization link is specifically used to complete the step of calculating the damping coefficient based on the real-time frequency deviation in S2.

[0062] In S2, based on the real-time frequency deviation, the damping coefficient is calculated, which specifically includes: taking the real-time frequency deviation as input, and using the damping coefficient calculation formula to calculate the damping coefficient.

[0063] The damping coefficient calculation formula is:

[0064] D eff (t) = D0 + ΔD·g(Δω(t)) (3)

[0065] In formula (3), D eff (t) is the time-varying effective damping coefficient, specifically the damping coefficient at time t; D0 is the initial damping coefficient, i.e. the basic damping coefficient; ΔD is the adjustable damping coefficient increment, which is the adjustment range of the damping coefficient; g(Δω(t)) is a function for adjusting the damping coefficient according to the change of frequency deviation, specifically the second adjustment function for adjusting the damping coefficient according to the real-time frequency deviation; Δω(t) is the real-time frequency deviation at time t.

[0066] The second adjustment function can be designed as needed. Here, this embodiment provides an example, and the second adjustment function is:

[0067] g(Δω(t))=h·Δω(t) (4)

[0068] In formula (4), h is the adjustment factor.

[0069] When the load frequency or grid frequency changes, the frequency deviation will change and the damping parameters will also change to adapt to the current operating conditions.

[0070] In this embodiment, the phase precise synchronization control link is specifically used to complete the step in S2 of outputting adjustment instructions based on virtual inertia and damping coefficient, and the adjustment instructions are used to adjust the output power of the power supply unit to adjust the phase of the power supply unit so that the phase of each power supply unit is equal.

[0071] In S2, the calculation formula for determining the adjustment instruction is:

[0072]

[0073]

[0074] In the above formula, is the first-order derivative of the phase of the power supply unit at time t; θ(t) is the phase of the power supply unit at time t; ω1(t) is the angular frequency of the power supply unit at time t; is the first-order derivative of the angular frequency of the power supply unit at time t; J eff (t) is the virtual inertia at time t; P m is the input power of the power supply unit, the input power is mechanical power; P e is the output power of the power supply unit, the output power is electrical power; D eff (t) is the damping coefficient at time t; ω(t) is the real-time frequency at time t.

[0075] For each power supply unit, under the premise of known virtual inertia and damping coefficient, let θ(t) and ω1(t) equal to the phase and angular frequency set in the virtual synchronous generator control strategy to adjust the output power of the power supply unit so that the phase and angular frequency of each power supply unit are equal.

[0076] The calculation formula provided in this embodiment provides a clear mathematical expression for the virtual synchronous generator control strategy, so that it can be adjusted and optimized more accurately in practical applications. In this way, each power unit adaptively adjusts inertia and damping to balance output power, which can effectively improve the responsiveness and stability of the entire system, especially in an environment where demand is constantly changing.

[0077] like Figure 4 As shown, the specific steps are:

[0078] Step 1: Before starting the special power supply network system for oil and gas booster stations, the system is initialized first, including starting all power units and performing self-test procedures to ensure that all components are working properly. Next, configure system parameters such as basic virtual inertia, basic damping coefficient, and reference frequency, which provide a baseline for subsequent dynamic adjustments.

[0079] Step 2: By continuously monitoring real-time load demand and grid frequency fluctuations, the virtual inertia is dynamically adjusted to increase or decrease so as to absorb or release energy more efficiently. This helps to alleviate frequency fluctuations caused by load changes and maintain system stability.

[0080] Step 3: By continuously monitoring the real-time grid frequency fluctuations and load frequency fluctuations, the damping coefficient is automatically adjusted. The adjustment of the damping coefficient is intended to suppress system oscillations that may be caused by frequency and voltage fluctuations, thereby enhancing the response speed and stability of the system.

[0081] Step 4: Precisely adjust the angular frequency and phase of each power supply unit to match the average angular frequency and phase of the entire system. Monitor and adjust the angular frequency and phase in real time to cope with sudden load changes or changes in environmental factors, ensuring that all parallel power supply units can achieve seamless angular frequency and phase matching under any operating conditions.

[0082] Step 5: Evaluate system performance and identify optimization points by collecting and analyzing operating data (load power, grid frequency, and other parameters). Based on these analysis results, adjust system parameters and control strategies to improve efficiency and reliability and ensure optimal performance of the system under various operating conditions.

[0083] In order to solve the problems existing in the special power supply networking system of the integrated oil and gas booster station, this embodiment can effectively improve the reliability of the system, reduce maintenance costs, and significantly enhance the adaptability and flexibility of the entire system. The control method of the special power supply networking system of the oil and gas booster station provided in this embodiment adopts an improved virtual synchronous generator control strategy consisting of a dynamic inertia adjustment link, an adaptive damping characteristic optimization link, and a phase precise synchronization control link. The dynamic inertia adjustment link increases or decreases the virtual inertia according to the real-time load demand and the grid frequency fluctuation, so as to more effectively absorb or release energy to maintain the stability of the special power supply networking system of the oil and gas booster station. The adaptive damping characteristic optimization link optimizes the damping coefficient according to the real-time grid frequency fluctuation and load frequency fluctuation, so as to suppress potential voltage and frequency oscillations and improve the response speed and stability of the special power supply networking system of the oil and gas booster station. The phase precise synchronization control link can ensure that all parallel power supply units can achieve seamless angular frequency and phase matching under any working conditions, and can also monitor and adjust the angular frequency and phase differences in real time to cope with sudden load changes or environmental factors. This embodiment can realize the parallel connection of high-power special power supplies of multiple units without interconnecting signal lines, thereby improving the adaptability and robustness of the special power supply networking system of the oil and gas booster station.

[0084] The embodiment of the present application also provides an application scenario, which applies the control method of the special power supply networking system of the oil and gas boosting station mentioned above. Specifically, the control method of the special power supply networking system of the oil and gas boosting station provided in this embodiment can be applied in the special power supply control scenario. The special power supply control scenario includes a data acquisition link, an instruction generation link and an adjustment link. The data acquisition link is used to obtain the real-time frequency and real-time frequency deviation of the power supply unit. The instruction generation link is used to calculate the virtual inertia based on the real-time frequency, calculate the damping coefficient based on the real-time frequency deviation, and output the adjustment instruction based on the virtual inertia and the damping coefficient. The adjustment link is used to adjust the output power of the power supply unit using the adjustment instruction to adjust the phase of the power supply unit so that the phase of each power supply unit is equal. The control method of the special power supply networking system of the oil and gas boosting station provided in this embodiment belongs to the instruction generation link.

[0085] Example 2

[0086] Based on the same inventive concept, the embodiment of the present application also provides a control device for a special power supply networking system for a petroleum and natural gas boosting station, which is used to implement the control method for the special power supply networking system for a petroleum and natural gas boosting station involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiment of the control device for a special power supply networking system for a petroleum and natural gas boosting station provided below can be referred to the limitations of the control method for the special power supply networking system for a petroleum and natural gas boosting station above, and will not be repeated here.

[0087] like Figure 5 As shown, a control device for a special power supply networking system for a petroleum and natural gas boosting station is provided, and the control device for the special power supply networking system for a petroleum and natural gas boosting station includes:

[0088] The data acquisition module M1 is used to acquire the real-time frequency and real-time frequency deviation of each power supply unit; the real-time frequency deviation is the difference between the grid frequency of the grid to which the power supply unit is connected and the load frequency of the load to which the power supply unit is connected.

[0089] The synchronous control module M2 is used to calculate the virtual inertia for each power supply unit based on the real-time frequency; calculate the damping coefficient based on the real-time frequency deviation; output an adjustment instruction based on the virtual inertia and the damping coefficient; the adjustment instruction is used to adjust the output power of the power supply unit to adjust the phase of the power supply unit so that the phase of each power supply unit is equal.

[0090] Example 3

[0091] In an exemplary embodiment, a computer device is provided. The computer device may be a server or a terminal. The internal structure diagram thereof may be as follows: Figure 6 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data to be processed. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a control method for a special power supply networking system of an oil and gas booster station is implemented.

[0092] Those skilled in the art will understand that Figure 6 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0093] In an exemplary embodiment, a computer device is also provided, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the control method of the special power supply networking system for the oil and gas boosting station described in Example 1.

[0094] Example 4

[0095] An embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the control method of the special power supply networking system for the oil and gas boosting station described in Example 1 is implemented.

[0096] Example 5

[0097] An embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the control method of the special power supply networking system for the oil and gas boosting station described in Example 1.

[0098] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0099] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A control method for a special power supply network system for a petroleum and natural gas booster station, the special power supply network system for a petroleum and natural gas booster station comprising a plurality of power supply units connected in parallel, characterized in that: The control method of the special power supply network system of the oil and gas booster station includes: Acquire the real-time frequency and real-time frequency deviation of each power supply unit; the real-time frequency deviation is the difference between the grid frequency of the grid to which the power supply unit is connected and the load frequency of the load to which the power supply unit is connected; For each power supply unit, a virtual inertia is calculated based on the real-time frequency; a damping coefficient is calculated based on the real-time frequency deviation; an adjustment instruction is output based on the virtual inertia and the damping coefficient; the adjustment instruction is used to adjust the output power of the power supply unit to adjust the phase of the power supply unit so that the phase of each power supply unit is equal.

2. The control method of the special power supply network system of the oil and gas boosting station according to claim 1 is characterized in that: Based on the real-time frequency, the virtual inertia is calculated, specifically comprising: taking the real-time frequency as input, and using a virtual inertia calculation formula to calculate the virtual inertia; The virtual inertia calculation formula is: J eff (t)=J0+ΔJ·f(ω(t)); Among them, J eff (t) is the virtual inertia at time t; J0 is the initial virtual inertia; ΔJ is the virtual inertia increment; f(ω(t)) is the first adjustment function for adjusting the virtual inertia according to the real-time frequency; ω(t) is the real-time frequency at time t.

3. The control method of the special power supply network system of the oil and gas boosting station according to claim 2 is characterized in that: The first adjustment function is: f(ω(t))=k(ω ref -ω(t); Where k is the proportionality coefficient; ω ref is the reference frequency.

4. The control method of the special power supply network system of the oil and gas boosting station according to claim 1 is characterized in that: Based on the real-time frequency deviation, calculating the damping coefficient specifically includes: taking the real-time frequency deviation as input, and calculating the damping coefficient using a damping coefficient calculation formula; The damping coefficient calculation formula is: D eff (t)=D0+ΔD·g(Δω(t)); Among them, D eff (t) is the damping coefficient at time t; D0 is the initial damping coefficient; ΔD is the damping coefficient increment; g(Δω(t)) is the second adjustment function for adjusting the damping coefficient according to the real-time frequency deviation; Δω(t) is the real-time frequency deviation at time t.

5. The control method of the special power supply network system of the oil and gas boosting station according to claim 4 is characterized in that: The second adjustment function is: g(Δω(t))=h·Δω(t); Among them, h is the adjustment factor.

6. The control method of the special power supply network system of the oil and gas boosting station according to claim 1 is characterized in that: The calculation formula for determining the adjustment instruction is: in, is the first-order derivative of the phase of the power supply unit at time t; θ(t) is the phase of the power supply unit at time t; ω1(t) is the angular frequency of the power supply unit at time t; is the first-order derivative of the angular frequency of the power supply unit at time t; J eff (t) is the virtual inertia at time t; P m is the input power of the power supply unit; P e is the output power of the power supply unit; D eff (t) is the damping coefficient at time t; ω(t) is the real-time frequency at time t.

7. A control device for a special power supply network system for a petroleum and natural gas booster station, characterized in that: The control device of the special power supply network system of the oil and gas booster station includes: A data acquisition module, used to acquire the real-time frequency and real-time frequency deviation of each power supply unit; the real-time frequency deviation is the difference between the grid frequency of the grid to which the power supply unit is connected and the load frequency of the load to which the power supply unit is connected; The synchronous control module is used to calculate the virtual inertia for each power supply unit based on the real-time frequency; calculate the damping coefficient based on the real-time frequency deviation; output an adjustment instruction based on the virtual inertia and the damping coefficient; the adjustment instruction is used to adjust the output power of the power supply unit to adjust the phase of the power supply unit so that the phase of each power supply unit is equal.

8. A computer device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the control method for the special power supply networking system for an oil and gas boosting station as described in any one of claims 1-6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the control method of the special power supply networking system for the oil and gas boosting station described in any one of claims 1-6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the control method of the special power supply networking system for the oil and gas boosting station described in any one of claims 1-6 is implemented.

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