Steady-State Automatic Regulation Method and System for New Energy Power Stations in Electromagnetic Transient Simulation

Abstract

The present invention discloses a steady-state automatic adjustment method and system for a new energy station in electromagnetic transient simulation, comprising: obtaining a flow result of a grid-connected port of the new energy station, and determining an initial value of an active power instruction and an initial value of a reactive power instruction of the new energy station according to the flow result; obtaining an active output measurement value and a reactive output measurement value of a clamped power supply; performing steady-state automatic adjustment of the new energy station according to the active power instruction initial value, the reactive power instruction initial value, the active output measurement value and the reactive output measurement value, until the active output and the reactive output of the clamped power supply are both preset thresholds, obtaining a final active power instruction of the new energy station, a reactive power instruction of new energy equipment and a reactive power instruction of the new energy station SVG; and controlling the new energy station based on the final active power instruction of the new energy station, the reactive power instruction of the new energy equipment and the reactive power instruction of the new energy station SVG, so that the new energy station enters a steady state.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic transient simulation technology for power systems, and more specifically, to a steady-state automatic adjustment method and system for a new energy station in electromagnetic transient simulation. Background Art

[0002] Power system simulation is an important means of understanding and studying power systems, and guiding their safe and stable operation. In recent years, with the development of ultra-high voltage AC / DC hybrid systems and the large-scale integration of renewable energy, power systems have gradually adopted power electronics. Traditional electromechanical transient simulation and analysis methods are no longer sufficient for analyzing the physical characteristics of current and future power grids. Electromagnetic transient simulation technology is becoming increasingly important in large-scale power grid simulation and analysis. Analyzing the impact of renewable energy sites such as wind power and photovoltaic power generation on the system based on large-scale electromagnetic transient time-domain simulation technology has also become a key component of power system safety and stability analysis.

[0003] In the time-domain simulation analysis of power systems, steady-state operation points are generally formed by flow calculations to provide the initial state for time-domain simulation. It is expected that after the numerical integration is started, the steady-state operation point described by the flow results will be quickly entered, and fault and disturbance simulations will be carried out on this basis. However, there are many difficulties in establishing the steady-state point of new energy stations in full electromagnetic transient simulation. (1) First, electromagnetic transient simulation does not have a steady-state calculation function corresponding to flow calculation. The initial value must be provided by electromechanical transient flow. There is an inherent deviation between the steady-state models of the two. In electromechanical flow calculations, new energy stations are equivalent to port PQ nodes or PV nodes, and their internal states cannot be obtained; (2) In electromagnetic transient simulations, power electronic equipment control systems are mostly user-defined, and the control logic of the equipment is highly differentiated, making it difficult to automatically form steady-state equations; in addition, power electronic equipment control systems have both AC sinusoidal steady-state state quantities in a stationary coordinate system and constant value steady-state state quantities in a rotating coordinate system. It is difficult to automatically identify modules and automatically form steady-state equations in the two user-defined coordinate systems, resulting in difficulty in solving the internal states of power electronic equipment control systems in electromagnetic transient simulations. (3) When the power electronic equipment control system adopts encapsulated control in electromagnetic transient simulation, its control logic is black-boxed and the internal state initialization of the control system cannot be achieved.

[0004] Faced with these difficulties, existing electromagnetic transient simulations typically initialize the system network based on electromechanical transient flow results. New energy station ports are started using voltage-clamped power supplies (port voltage-clamped power supplies, hereinafter referred to as "clamped power supplies"). The startup process for the new energy station and the off-grid status and timing of the clamped power supplies are then manually adjusted. The electromagnetic transient modeling process for each new operating mode involves significant manual intervention. The low success rate and efficiency of manual adjustments significantly restrict the application of full electromagnetic transient simulations involving large-scale new energy systems, limiting the stable operation of future power systems dominated by new energy.

[0005] Therefore, a steady-state automatic adjustment method for new energy stations in electromagnetic transient simulation is needed. Summary of the Invention

[0006] The present invention proposes a method and system for steady-state automatic adjustment of a new energy station in electromagnetic transient simulation to solve the problem of how to efficiently achieve steady-state automatic adjustment of a new energy station.

[0007] In order to solve the above problems, according to one aspect of the present invention, a method for steady-state automatic adjustment of a new energy station in electromagnetic transient simulation is provided, the method comprising:

[0008] Obtaining a power flow result of a grid-connected port of a new energy station, and determining an initial value of an active power instruction and an initial value of a reactive power instruction of the new energy station according to the power flow result;

[0009] Obtaining active output measurement values and reactive output measurement values of the clamped power supply; wherein, the new energy station port is connected in parallel to a voltage source, so that the voltage source serves as the clamped power supply;

[0010] Perform steady-state automatic adjustment of the new energy station according to the active power command initial value, the reactive power command initial value, the active output measurement value, and the reactive output measurement value, obtain the new energy station active power command, the new energy equipment reactive power command, and the new energy station SVG reactive power command, and output them to the new energy station electromagnetic transient simulation model to control the active power and reactive power of the new energy station port in the electromagnetic transient simulation;

[0011] The new energy station is controlled based on the final new energy station active power instruction, the new energy equipment reactive power instruction and the new energy station SVG reactive power instruction, so that the new energy station enters a steady state.

[0012] Preferably, the method further comprises:

[0013] The voltage source amplitude and voltage source phase angle of the clamped power supply are set according to the power flow result; wherein the power flow result includes: the port voltage amplitude and port voltage phase angle of the grid-connected port of the new energy station.

[0014] Preferably, the steady-state automatic adjustment of the new energy station is performed according to the active power command initial value, the reactive power command initial value, the active output measurement value, and the reactive output measurement value, until the active output and reactive output of the clamped power supply are both within a preset threshold value, and the final new energy station active power command, new energy equipment reactive power command, and new energy station SVG reactive power command are obtained, including:

[0015] Step 1: Perform steady-state automatic adjustment of the new energy station based on the initial value of the active power command, the initial value of the reactive power command, and the current active and reactive power outputs, and obtain the current active power command of the new energy station, the reactive power command of the new energy equipment, and the reactive power command of the new energy station SVG;

[0016] Step 2: Input the current active power command of the new energy station, the reactive power command of the new energy equipment, and the reactive power command of the new energy station SVG into the electromagnetic transient simulation model of the new energy station to control the active power and reactive power of the ports of the new energy station, thereby updating the active power output and reactive power output of the clamped power supply;

[0017] Step 3, determine whether the current active output and reactive output of the clamped power supply are both preset thresholds; if so, disconnect the clamped power supply, and determine that the current new energy station active power instruction, new energy equipment reactive power instruction, and new energy station SVG reactive power instruction are the final new energy station active power instruction, new energy equipment reactive power instruction, and new energy station SVG reactive power instruction; if not, return to step 1 and recalculate until the current active power output and reactive power output of the clamped power supply are both preset thresholds, and then determine the final new energy station active power instruction, new energy equipment reactive power instruction, and new energy station SVG reactive power instruction.

[0018] Preferably, the steady-state automatic adjustment of the new energy station according to the active power instruction initial value, the reactive power instruction initial value, the current active power output and the reactive power output includes:

[0019] Calculate a first difference between the preset threshold and the current reactive output, use the first difference as the B channel input of the first selector, input the preset threshold into the A channel of the first selector, use the output of the first selector as the input of the first first-order low-pass filter link, and use the output of the first first-order low-pass filter link as the input of the first proportional-integral regulator; use the sum of the output of the first proportional-integral regulator and the reactive instruction initial value as the B channel input of the second selector, input the reactive instruction initial value into the A channel of the second selector, connect the output of the second selector to the input of the second first-order low-pass filter, use the output of the second first-order low-pass filter as the input of the limiting link, determine the reactive instruction of the new energy equipment according to the output of the limiting link, and determine the reactive instruction of the new energy station SVG according to the difference between the output of the second first-order low-pass filter and the output of the limiting link;

[0020] Calculate the second difference between the preset threshold and the current active power output, use the second difference as the B channel input of the third selector, use the preset threshold as the A channel input of the third selector, use the output of the third selector as the input of the third first-order low-pass filter link, and use the output of the third first-order low-pass filter link as the input of the second proportional-integral regulator; use the sum of the output of the second proportional-integral regulator and the initial value of the active power instruction as the B channel input of the fourth selector, use the A channel input of the fourth selector as the initial value of the active power instruction, connect the output of the fourth selector to the input of the fourth first-order low-pass filter T4, and determine the active power instruction of the new energy station according to the output of the fourth first-order low-pass filter.

[0021] According to another aspect of the present invention, a steady-state automatic adjustment system for a new energy station in electromagnetic transient simulation is provided, the system comprising:

[0022] An instruction initial value determination unit is used to obtain a power flow result of a grid-connected port of a new energy station, and determine an active power instruction initial value and a reactive power instruction initial value of the new energy station according to the power flow result;

[0023] There is a reactive power acquisition unit, which is used to obtain the active power output measurement value and the reactive power output measurement value of the clamped power supply; wherein, the new energy station port is connected in parallel to the voltage source, so that the voltage source is used as the clamped power supply;

[0024] An automatic adjustment unit, configured to perform steady-state automatic adjustment of the new energy station according to the active power command initial value, the reactive power command initial value, the active output measurement value, and the reactive output measurement value, until the active output and reactive output of the clamped power source are both within a preset threshold value, and obtain a final new energy station active power command, new energy equipment reactive power command, and new energy station SVG reactive power command;

[0025] The control unit is used to control the new energy station based on the final new energy station active power instruction, the new energy equipment reactive power instruction and the new energy station SVG reactive power instruction, so that the new energy station enters a steady state.

[0026] Preferably, the system further comprises:

[0027] A setting unit is used to set the voltage source amplitude and voltage source phase angle of the clamped power supply according to the power flow result; wherein the power flow result includes: the port voltage amplitude and port voltage phase angle of the grid-connected port of the new energy station.

[0028] Preferably, the automatic adjustment unit performs steady-state automatic adjustment of the new energy station according to the active power instruction initial value, the reactive power instruction initial value, the active output measurement value, and the reactive output measurement value until the active output and reactive output of the clamped power supply are both within a preset threshold value, and obtains the final new energy station active power instruction, new energy equipment reactive power instruction, and new energy station SVG reactive power instruction, including:

[0029] The instruction acquisition module is used to automatically adjust the steady state of the new energy station according to the initial value of the active power instruction, the initial value of the reactive power instruction, the current active output and reactive output, and obtain the current active power instruction of the new energy station, the reactive power instruction of the new energy equipment, and the reactive power instruction of the new energy station SVG;

[0030] A control module is used to input the current new energy station active power instruction, new energy equipment reactive power instruction, and new energy station SVG reactive power instruction into the new energy station electromagnetic transient simulation model to control the active and reactive power of the new energy station port, thereby updating the active output and reactive output of the clamped power supply;

[0031] The instruction determination module is used to determine whether the current active output and reactive output of the clamped power supply are both preset thresholds; if so, the clamped power supply is disconnected, and the current new energy station active instruction, new energy equipment reactive instruction and new energy station SVG reactive instruction are determined to be the final new energy station active instruction, new energy equipment reactive instruction and new energy station SVG reactive instruction; if not, the instruction acquisition module is entered to recalculate until the current active output and reactive output of the clamped power supply are both preset thresholds, and the final new energy station active instruction, new energy equipment reactive instruction and new energy station SVG reactive instruction are determined.

[0032] Preferably, the automatic adjustment unit performs steady-state automatic adjustment of the new energy station according to the active power instruction initial value, the reactive power instruction initial value, the current active power output and the reactive power output, including:

[0033] Calculate a first difference between the preset threshold and the current reactive output, use the first difference as the B channel input of the first selector, input the preset threshold into the A channel of the first selector, use the output of the first selector as the input of the first first-order low-pass filter link, and use the output of the first first-order low-pass filter link as the input of the first proportional-integral regulator; use the sum of the output of the first proportional-integral regulator and the reactive instruction initial value as the B channel input of the second selector, input the reactive instruction initial value into the A channel of the second selector, connect the output of the second selector to the input of the second first-order low-pass filter, use the output of the second first-order low-pass filter as the input of the limiting link, determine the reactive instruction of the new energy equipment according to the output of the limiting link, and determine the reactive instruction of the new energy station SVG according to the difference between the output of the second first-order low-pass filter and the output of the limiting link;

[0034] Calculate the second difference between the preset threshold and the current active power output, use the second difference as the B channel input of the third selector, use the preset threshold as the A channel input of the third selector, use the output of the third selector as the input of the third first-order low-pass filter link, and use the output of the third first-order low-pass filter link as the input of the second proportional-integral regulator; use the sum of the output of the second proportional-integral regulator and the initial value of the active power instruction as the B channel input of the fourth selector, use the A channel input of the fourth selector as the initial value of the active power instruction, connect the output of the fourth selector to the input of the fourth first-order low-pass filter T4, and determine the active power instruction of the new energy station according to the output of the fourth first-order low-pass filter.

[0035] Based on another aspect of the present invention, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any step of a steady-state automatic adjustment method for a new energy station in electromagnetic transient simulation.

[0036] According to another aspect of the present invention, the present invention provides an electronic device, including:

[0037] The computer-readable storage medium described above; and

[0038] One or more processors are configured to execute the program in the computer-readable storage medium.

[0039] The present invention provides a steady-state automatic adjustment method and system for a new energy station in electromagnetic transient simulation, comprising: obtaining a flow result of a grid-connected port of the new energy station, and determining an initial value of an active power instruction and an initial value of a reactive power instruction of the new energy station according to the flow result; obtaining an active output measurement value and a reactive output measurement value of a clamped power supply; wherein, the new energy station port is connected in parallel to a voltage source so as to use the voltage source as the clamped power supply; performing steady-state automatic adjustment of the new energy station according to the active power instruction initial value, the reactive power instruction initial value, the active output measurement value and the reactive output measurement value, until the active output and the reactive output of the clamped power supply are both preset thresholds, obtaining a final new energy station active power instruction, a new energy equipment reactive power instruction and a new energy station SVG reactive power instruction; and controlling the new energy station based on the final new energy station active power instruction, the new energy equipment reactive power instruction and the new energy station SVG reactive power instruction so that the new energy station enters a steady state. The present invention can realize the automatic adjustment of the operating point of the new energy station in the simulation. After starting the simulation, the supporting power supply is automatically disconnected when the clamped power supply supports the system power of 0, and finally the new energy station automatically establishes the steady-state operating point according to the port flow constraint. The automatic adjustment system based on the method of the present invention can replace manual adjustment, greatly improving the success rate and efficiency of establishing the steady-state operating point of the new energy station in electromagnetic simulation; the present invention helps to solve the problem of difficulty in establishing the steady-state operating point of the new energy station and low efficiency of manual adjustment in electromagnetic transient simulation, improve the cognitive ability of high-proportion new energy power systems, and improve the new clean energy absorption capacity, which has high application value and social significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] A more complete understanding of exemplary embodiments of the present invention may be obtained by referring to the following drawings:

[0041] Figure 1 Flowchart of a steady-state automatic adjustment method 100 for a new energy station in electromagnetic transient simulation according to an embodiment of the present invention;

[0042] Figure 2 A schematic diagram of an application scenario of the steady-state automatic adjustment method for a new energy station according to an embodiment of the present invention in electromagnetic transient simulation;

[0043] Figure 3 This is a control block diagram of an automatic adjustment system for a new energy station according to an embodiment of the present invention;

[0044] Figure 4 is a curve diagram showing changes in the active power Psi supported by the clamped power supply according to an embodiment of the present invention;

[0045] Figure 5 is a curve diagram showing a change in reactive power Qsi supported by a clamped power supply according to an embodiment of the present invention;

[0046] Figure 6 A curve diagram showing changes in active power at a new energy station port according to an embodiment of the present invention;

[0047] Figure 7 A curve diagram showing changes in reactive power at a new energy station port according to an embodiment of the present invention;

[0048] Figure 8 Schematic diagram of the structure of a steady-state automatic adjustment system 800 for a new energy station in electromagnetic transient simulation according to an embodiment of the present invention. DETAILED DESCRIPTION

[0049] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide a thorough and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments shown in the accompanying drawings is not intended to limit the present invention. In the accompanying drawings, identical elements are denoted by the same reference numerals.

[0050] Unless otherwise specified, the terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have meanings consistent with the context of their relevant fields and should not be interpreted as idealized or overly formal.

[0051] Establishing steady-state points for renewable energy stations in full electromagnetic transient simulation presents numerous difficulties. First, electromagnetic transient simulation lacks the steady-state calculation capabilities that correspond to power flow calculations. The highly differentiated logic of power electronic equipment control systems in electromagnetic transient simulation makes it difficult to automatically form steady-state equations. Furthermore, the control systems of power electronic equipment in electromagnetic transient simulation cannot be initialized when using packaged control.

[0052] Faced with these difficulties, existing electromagnetic transient simulations typically initialize the system network based on electromechanical transient flow results, followed by manual adjustments to the startup process of the renewable energy station. Modeling each new operating mode requires significant manual intervention. To improve the efficiency and automation of establishing steady-state simulation systems in future full electromagnetic transient simulations, this paper proposes a method for automatically adjusting the steady-state operating point of renewable energy stations in electromagnetic transient simulations.

[0053] Figure 1 FIG. 1 is a flow chart of a method 100 for automatically adjusting a steady-state energy station in electromagnetic transient simulation according to an embodiment of the present invention. Figure 1As shown, the steady-state automatic adjustment method for the new energy station provided by the present invention can realize the automatic adjustment of the operating point of the new energy station in the simulation, automatically disconnect the supporting power supply when the clamped power supply supports the system power of 0 after starting the simulation, and finally realize the automatic establishment of the steady-state operating point of the new energy station according to the port flow constraint. The automatic adjustment system based on the method of the present invention can replace manual adjustment, greatly improving the success rate and efficiency of establishing the steady-state operating point of the new energy station in electromagnetic simulation; the present invention helps to solve the problem of difficulty in establishing the steady-state operating point of the new energy station and low efficiency of manual adjustment in electromagnetic transient simulation, improve the cognitive ability of the high-proportion new energy power system, and improve the new clean energy absorption capacity, which has high application value and social significance. The steady-state automatic adjustment method 100 for the new energy station provided by the embodiment of the present invention starts from step 101, and obtains the flow result of the grid-connected port of the new energy station in step 101, and determines the initial value of the active power instruction and the initial value of the reactive power instruction of the new energy station according to the flow result.

[0054] In the present invention, the power flow results of the grid-connected port of the regulated new energy station are obtained from the electromechanical transient simulation, including the port voltage amplitude and phase angle; and the active power instruction initial value P of the new energy station is estimated based on the power flow calculation results. ref0 and the initial value of reactive power instruction Q ref0 .

[0055] In step 102, the active output measurement value and the reactive output measurement value of the clamped power supply are obtained; wherein, the new energy station port is connected in parallel to a voltage source, so that the voltage source is used as the clamped power supply.

[0056] Preferably, the method further comprises:

[0057] The voltage source amplitude and voltage source phase angle of the clamped power supply are set according to the power flow result; wherein the power flow result includes: the port voltage amplitude and port voltage phase angle of the grid-connected port of the new energy station.

[0058] In the present invention, the new energy station port is connected in parallel to a voltage source as a clamped power supply, and the voltage amplitude and phase angle of the clamped power supply are set according to the above-mentioned power flow results.

[0059] In step 103, steady-state automatic adjustment of the new energy station is performed based on the active power instruction initial value, the reactive power instruction initial value, the active output measurement value, and the reactive output measurement value, and the active power instruction of the new energy station, the reactive power instruction of the new energy equipment, and the reactive power instruction of the new energy station SVG are obtained and output to the electromagnetic transient simulation model of the new energy station to control the active power and reactive power of the ports of the new energy station in the electromagnetic transient simulation.

[0060] Preferably, the steady-state automatic adjustment of the new energy station is performed according to the active power command initial value, the reactive power command initial value, the active output measurement value, and the reactive output measurement value, until the active output and reactive output of the clamped power supply are both within a preset threshold value, and the final new energy station active power command, new energy equipment reactive power command, and new energy station SVG reactive power command are obtained, including:

[0061] Step 1: Perform steady-state automatic adjustment of the new energy station based on the initial value of the active power command, the initial value of the reactive power command, and the current active and reactive power outputs, and obtain the current active power command of the new energy station, the reactive power command of the new energy equipment, and the reactive power command of the new energy station SVG;

[0062] Step 2: Input the current active power command of the new energy station, the reactive power command of the new energy equipment, and the reactive power command of the new energy station SVG into the electromagnetic transient simulation model of the new energy station to control the active power and reactive power of the ports of the new energy station, thereby updating the active power output and reactive power output of the clamped power supply;

[0063] Step 3, determine whether the current active output and reactive output of the clamped power supply are both preset thresholds; if so, disconnect the clamped power supply, and determine that the current new energy station active power instruction, new energy equipment reactive power instruction, and new energy station SVG reactive power instruction are the final new energy station active power instruction, new energy equipment reactive power instruction, and new energy station SVG reactive power instruction; if not, return to step 1 and recalculate until the current active power output and reactive power output of the clamped power supply are both preset thresholds, and then determine the final new energy station active power instruction, new energy equipment reactive power instruction, and new energy station SVG reactive power instruction.

[0064] Preferably, the steady-state automatic adjustment of the new energy station according to the active power instruction initial value, the reactive power instruction initial value, the current active power output and the reactive power output includes:

[0065] Calculate a first difference between the preset threshold and the current reactive output, use the first difference as the B channel input of the first selector, input the preset threshold into the A channel of the first selector, use the output of the first selector as the input of the first first-order low-pass filter link, and use the output of the first first-order low-pass filter link as the input of the first proportional-integral regulator; use the sum of the output of the first proportional-integral regulator and the reactive instruction initial value as the B channel input of the second selector, input the reactive instruction initial value into the A channel of the second selector, connect the output of the second selector to the input of the second first-order low-pass filter, use the output of the second first-order low-pass filter as the input of the limiting link, determine the reactive instruction of the new energy equipment according to the output of the limiting link, and determine the reactive instruction of the new energy station SVG according to the difference between the output of the second first-order low-pass filter and the output of the limiting link;

[0066] Calculate the second difference between the preset threshold and the current active power output, use the second difference as the B channel input of the third selector, use the preset threshold as the A channel input of the third selector, use the output of the third selector as the input of the third first-order low-pass filter link, and use the output of the third first-order low-pass filter link as the input of the second proportional-integral regulator; use the sum of the output of the second proportional-integral regulator and the initial value of the active power instruction as the B channel input of the fourth selector, use the A channel input of the fourth selector as the initial value of the active power instruction, connect the output of the fourth selector to the input of the fourth first-order low-pass filter T4, and determine the active power instruction of the new energy station according to the output of the fourth first-order low-pass filter.

[0067] In the present invention, the initial value of the active power instruction of the new energy station P ref0 , reactive power command initial value Q ref0 The two inputs to the automatic regulation system are the active and reactive power outputs of the clamped power supply. The automatic regulation system has three outputs: output one is the active power command of the new energy station, output two is the reactive power command of the new energy equipment, and output three is the reactive power command of the new energy station SVG.

[0068] like Figure 2 As shown in the figure, it is a schematic diagram of the application scenario of the steady-state automatic adjustment method of the new energy station in the electromagnetic transient simulation. Figure 2 As shown in the figure, it includes the new energy station sub-network E, the AC network N connected to the sub-network E through the grid connection point BUS_C, the new energy station automatic start-up regulation system, the clamping power supply connected to the grid connection point BUS_C, and the circuit breaker S used to connect the clamping power supply and the grid connection point. The above parts together constitute the operation scenario of the automatic regulation method. The input quantity of the new energy station automatic start-up regulation system is the active power P injected into the system by the clamping power supply. si and reactive Q si The output quantities are the active power instruction Pe_ref of the new energy station, the reactive power instruction Qe_ref of the new energy equipment, and the reactive power instruction Qsvg_ref of the SVG within the new energy station.

[0069] The control block diagram of the automatic adjustment system of the new energy station is as follows: Figure 3 As shown in the figure, the active and reactive power of the clamped power supply is tracked by the proportional integral regulator to control the active and reactive power of the new energy station port. Among them, the input quantity of the new energy station automatic regulation system is the active power P injected by the clamped power supply into the system. si and reactive Q si The output quantities are the active power instruction Pe_ref of the new energy station, the reactive power instruction Qe_ref of the new energy equipment, and the reactive power instruction Qsvg_ref of the SVG within the new energy station.

[0070] The preset threshold 0 minus the reactive power Q injected into the system by the clamped power supply si , the difference formed after subtraction is used as the B channel input of the first selector S1, the A channel input of the first selector S1 is 0, the output of the first selector S1 is used as the input of the first first-order low-pass filter link T1, and the output of the first first-order low-pass filter link T1 is used as the input of the first proportional integral regulator 1; the output of the first proportional integral regulator 1 and the initial value of the reactive power instruction Q of the new energy equipment ref0 The sum is taken as the input of the B channel of the second selector S2, and the input of the A channel of the second selector S2 is the initial value of the reactive power instruction Q ref0 The output of the second selector S2 is connected to the input of the second first-order low-pass filter T2, the output of the second first-order low-pass filter T2 is used as the input of the limiting link, the output of the limiting link is used as the reactive power instruction Qe_ref of the new energy equipment, and at the same time, the output of the second first-order low-pass filter T2 is subtracted from the output of the limiting link, and the difference is used as the reactive power instruction Qsvg_ref of the new energy station SVG.

[0071] The preset threshold 0 minus the active power P injected into the system by the clamped power supply is si , the difference formed after subtraction is used as the B channel input of the third selector S3, the A channel input of the third selector S3 is 0, the output of the third selector S3 is used as the input of the first-order low-pass filter link T3, and the output of the third first-order low-pass filter link T3 is used as the input of the second proportional integral regulator 2; the output of the second proportional integral regulator 2 and the initial value of the active power instruction P of the new energy station ref0 The sum is taken as the input of the B channel of the fourth selector S4, and the input of the A channel of the fourth selector S4 is the initial value of the active power instruction P ref0 The output of the fourth selector S4 is connected to the input of the fourth first-order low-pass filter T4, and the output of the fourth first-order low-pass filter T4 serves as the new energy station active power instruction Pe_ref.

[0072] In this invention, the three outputs of the automatic regulation system (the new energy station active power command, the new energy equipment reactive power command, and the new energy station SVG reactive power command) are connected to the new energy station electromagnetic transient model. This controls the active and reactive power at the new energy station ports after the electromagnetic transient simulation is initiated. The simulation is initiated, and the active and reactive power of the clamped power supply are automatically detected during the simulation. When the active and reactive power outputs of the clamped power supply reach zero, the clamped power supply is disconnected, and the final active power command for the new energy station, reactive power command for the new energy equipment, and reactive power command for the new energy station SVG are determined.

[0073] In step 104 , the new energy station is controlled based on the final new energy station active power instruction, the new energy equipment reactive power instruction and the new energy station SVG reactive power instruction, so that the new energy station enters a steady state.

[0074] The method of the present invention can effectively solve the problems of difficulty in establishing steady-state operating points of new energy stations and low efficiency of manual adjustment in electromagnetic transient simulation, but the application scenarios are not limited to this. In electromechanical and electromagnetic transient simulations, any dynamic element whose port active and reactive power can be continuously adjusted can automatically establish a steady-state operating point according to the present invention.

[0075] In order to achieve the purpose of the above-mentioned steady-state automatic adjustment of the new energy station based on port voltage clamping, the embodiment of the present invention is realized in electromagnetic transient simulation, a new energy station grid-connected system is constructed, and a clamped power supply is connected in parallel to the grid-connected port, such as Figure 2 The specific implementation example of the present invention is carried out according to the following steps.

[0076] Step 1: Obtain the power flow results of the grid-connected port of the regulated new energy station from the electromechanical transient simulation, including the port voltage amplitude and phase angle. In this example, the voltage amplitude is 0.99 pu and the phase angle is 62.368 degrees. Roughly calculate the initial value of the active power command P of the new energy station based on the power flow calculation results. ref0 It is 0.66 times the rated power of the station, and the initial value of the reactive power instruction is Q ref0 is 0.

[0077] Step 2: Connect a voltage source in parallel to the new energy station port as a clamped power source. The voltage amplitude and phase angle of the voltage source are the power flow values obtained in step 1. The voltage amplitude is 0.99 pu and the phase angle is 62.368 degrees.

[0078] Step 3: The initial value of the new energy station active power instruction P calculated in step 1 ref0 , reactive power command initial value Q ref0 The two inputs of the automatic regulation system designed by the present invention are the active and reactive power of the clamped power source in step 2. The automatic regulation system designed by the present invention has three outputs: output 1, the active power command of the new energy station; output 2, the reactive power command of the new energy equipment; and output 3, the reactive power command of the new energy station SVG.

[0079] Step 4: Connect the three outputs of the automatic regulation system in step 3 (new energy station active power command, new energy equipment reactive power command, and new energy station SVG reactive power command) to the electromagnetic transient model of the new energy station to control the active and reactive power of the new energy station after the electromagnetic transient simulation is started.

[0080] Step 5: Start the simulation. During the simulation, the active and reactive power of the clamped power supply are automatically detected. When the active and reactive outputs of the clamped power supply are 0, the clamped power supply is disconnected to determine the final active power instruction of the new energy station, reactive power instruction of the new energy equipment, and reactive power instruction of the new energy station SVG.

[0081] Step 6: After disconnecting the clamping power supply, you can also check whether the new energy station has entered a steady state.

[0082] Among them, in step 3, the input quantity of the automatic start-up regulation system of the new energy station is the active power P injected into the system by the clamped power supply. si and reactive Q si The output quantities are the new energy station active power command Pe_ref, the new energy equipment reactive power command Qe_ref, and the SVG reactive power command Qsvg_ref within the new energy station. During automatic regulation, the active and reactive power of the clamped support power source are tracked by a proportional-integral regulator to control the active and reactive power at the new energy station port.

[0083] Specifically, in the automatic jump plane system of the new energy station, the input quantity is the active power P injected into the system by the clamped power supply. si and reactive Q si The output quantities are the active power instruction Pe_ref of the new energy station, the reactive power instruction Qe_ref of the new energy equipment, and the reactive power instruction Qsvg_ref of the SVG within the new energy station.

[0084] The reactive power Q injected into the system is subtracted from the clamped power supply by 0. si , the difference formed after subtraction is used as the B channel input of selector S1, the A channel input of selector S1 is 0, the output of selector S1 is used as the input of the first-order low-pass filter link T1, and the output of the first-order low-pass filter link T1 is used as the input of proportional integral regulator 1; the output of proportional integral regulator 1 and the initial value of reactive power instruction Q of new energy equipment ref0 The sum is taken as the input of channel B of selector S2, and the input of channel A of selector S2 is the initial value of reactive power instruction Q. ref0 The output of the selector S2 is connected to the input of the first-order low-pass filter T2, the output of the first-order low-pass filter T2 is used as the input of the limiting link, the output of the limiting link is used as the reactive power instruction Qe_ref of the new energy equipment, and at the same time, the output of the first-order low-pass filter T2 is subtracted from the output of the limiting loop, and the difference is used as the reactive power instruction Qsvg_ref of the SVG in the new energy station.

[0085] The active power P injected into the system is subtracted from the clamped power supply by 0 si , the difference formed after subtraction is used as the B channel input of selector S3, the A channel input of selector S3 is 0, the output of selector S3 is used as the input of the first-order low-pass filter link T3, and the output of the first-order low-pass filter link T3 is used as the input of proportional integral regulator 2; the output of proportional integral regulator 2 and the initial value of the active power instruction of the new energy station P ref0 The sum is used as the input of channel B of selector S4, and the input of channel A of selector S4 is the initial value of active power instruction P ref0The output of the selector S4 is connected to the input of the first-order low-pass filter T4, and the output of the first-order low-pass filter T4 serves as the active power instruction Pe_ref of the new energy station.

[0086] Following the aforementioned steps, the present invention's steady-state automatic regulation method for a new energy station based on port voltage clamping was implemented, achieving automatic startup of the new energy station grid-connected system constructed in electromagnetic simulation. The automatic regulation system was activated for 5 seconds, meaning that selectors S1, S2, S3, and S4 in this embodiment maintained channel A for the first 5 seconds, switched to channel B after 5 seconds, and disconnected the clamped power supply for 10 seconds.

[0087] The startup effect is as follows Figures 4 to 7 As shown, Figure 4 To clamp the power supply to support the active power P si Curve (MW), Figure 5 Support reactive Q for clamped power supply si Curve (Mvar), Figure 6 The active power curve of the new energy station port (MW), Figure 7 is the reactive power curve of the new energy station port (Mvar). Figures 4 to 7 As can be seen, the new energy station, under the automatic regulation method proposed in this invention, enters steady state within 3 seconds after being put into the automatic regulation system for 5 seconds. The active and reactive power of the clamped power supply are automatically adjusted to values close to 0. The clamped power supply is disconnected after 10 seconds, with virtually no disturbance to the remaining power supply. This embodiment fully demonstrates the effectiveness of the invention in automatically regulating the steady state of the new energy station, eliminating the need for manual intervention and significantly improving the automatic startup efficiency of the new energy station in electromagnetic transient simulation.

[0088] Figure 8 FIG. 8 is a structural diagram of a steady-state automatic adjustment system 800 for a new energy station in electromagnetic transient simulation according to an embodiment of the present invention. Figure 8 As shown, an embodiment of the present invention provides a steady-state automatic adjustment system for a new energy station, the system comprising: an instruction initial value determination unit 801, a reactive power acquisition unit 802, an automatic adjustment unit 803 and a control unit 804.

[0089] Preferably, the instruction initial value determining unit 801 is used to obtain the power flow result of the grid-connected port of the new energy station, and determine the active power instruction initial value and the reactive power instruction initial value of the new energy station according to the power flow result.

[0090] Preferably, there is a reactive output acquisition unit 802 for acquiring the active output measurement value and the reactive output measurement value of the clamped power supply; wherein the new energy station port is connected in parallel to the voltage source to use the voltage source as the clamped power supply.

[0091] Preferably, the system further comprises:

[0092] A setting unit is used to set the voltage source amplitude and voltage source phase angle of the clamped power supply according to the power flow result; wherein the power flow result includes: the port voltage amplitude and port voltage phase angle of the grid-connected port of the new energy station.

[0093] Preferably, the automatic adjustment unit 803 is configured to perform steady-state automatic adjustment of the new energy station according to the active power command initial value, the reactive power command initial value, the active output measurement value, and the reactive output measurement value, until the active output and reactive output of the clamped power source are both within a preset threshold value, and obtain a final new energy station active power command, new energy equipment reactive power command, and new energy station SVG reactive power command;

[0094] Preferably, the automatic adjustment unit 803 performs steady-state automatic adjustment of the new energy station according to the active power instruction initial value, the reactive power instruction initial value, the active output measurement value, and the reactive output measurement value until the active output and reactive output of the clamped power supply are both within the preset threshold value, and obtains the final new energy station active power instruction, new energy equipment reactive power instruction, and new energy station SVG reactive power instruction, including:

[0095] The instruction acquisition module is used to automatically adjust the steady state of the new energy station according to the initial value of the active power instruction, the initial value of the reactive power instruction, the current active output and reactive output, and obtain the current active power instruction of the new energy station, the reactive power instruction of the new energy equipment, and the reactive power instruction of the new energy station SVG;

[0096] A control module is used to input the current new energy station active power instruction, new energy equipment reactive power instruction, and new energy station SVG reactive power instruction into the new energy station electromagnetic transient simulation model to control the active and reactive power of the new energy station port, thereby updating the active output and reactive output of the clamped power supply;

[0097] The instruction determination module is used to determine whether the current active output and reactive output of the clamped power supply are both preset thresholds; if so, the clamped power supply is disconnected, and the current new energy station active instruction, new energy equipment reactive instruction and new energy station SVG reactive instruction are determined to be the final new energy station active instruction, new energy equipment reactive instruction and new energy station SVG reactive instruction; if not, the instruction acquisition module is entered to recalculate until the current active output and reactive output of the clamped power supply are both preset thresholds, and the final new energy station active instruction, new energy equipment reactive instruction and new energy station SVG reactive instruction are determined.

[0098] Preferably, the automatic adjustment unit 803 performs steady-state automatic adjustment of the new energy station according to the active power instruction initial value, the reactive power instruction initial value, the current active power output and the reactive power output, including:

[0099] Calculate a first difference between the preset threshold and the current reactive output, use the first difference as the B channel input of the first selector, input the preset threshold into the A channel of the first selector, use the output of the first selector as the input of the first first-order low-pass filter link, and use the output of the first first-order low-pass filter link as the input of the first proportional-integral regulator; use the sum of the output of the first proportional-integral regulator and the reactive instruction initial value as the B channel input of the second selector, input the reactive instruction initial value into the A channel of the second selector, connect the output of the second selector to the input of the second first-order low-pass filter, use the output of the second first-order low-pass filter as the input of the limiting link, determine the reactive instruction of the new energy equipment according to the output of the limiting link, and determine the reactive instruction of the new energy station SVG according to the difference between the output of the second first-order low-pass filter and the output of the limiting link;

[0100] Calculate the second difference between the preset threshold and the current active power output, use the second difference as the B channel input of the third selector, use the preset threshold as the A channel input of the third selector, use the output of the third selector as the input of the third first-order low-pass filter link, and use the output of the third first-order low-pass filter link as the input of the second proportional-integral regulator; use the sum of the output of the second proportional-integral regulator and the initial value of the active power instruction as the B channel input of the fourth selector, use the A channel input of the fourth selector as the initial value of the active power instruction, connect the output of the fourth selector to the input of the fourth first-order low-pass filter T4, and determine the active power instruction of the new energy station according to the output of the fourth first-order low-pass filter.

[0101] Preferably, the control unit 804 is used to control the new energy station based on the final new energy station active power instruction, new energy equipment reactive power instruction and new energy station SVG reactive power instruction, so that the new energy station enters a steady state.

[0102] The steady-state automatic adjustment system 800 for a new energy station in electromagnetic transient simulation according to an embodiment of the present invention corresponds to the steady-state automatic adjustment method 100 for a new energy station in electromagnetic transient simulation according to another embodiment of the present invention, and will not be described in detail here.

[0103] Based on another aspect of the present invention, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any step of a steady-state automatic adjustment method for a new energy station in electromagnetic transient simulation.

[0104] According to another aspect of the present invention, the present invention provides an electronic device, including:

[0105] The computer-readable storage medium described above; and

[0106] One or more processors are configured to execute the program in the computer-readable storage medium.

[0107] The invention has been described above with reference to a few embodiments. However, it is readily apparent to a person skilled in the art that other embodiments than the ones disclosed above are equally within the scope of the invention, as defined by the appended patent claims.

[0108] Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a / the [means, component, etc.]" are to be interpreted openly as referring to at least one instance of the means, component, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not necessarily need to be performed in the exact order disclosed, unless explicitly stated otherwise.

[0109] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0110] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0111] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0112] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A steady-state automatic adjustment method for a new energy station in electromagnetic transient simulation, characterized in that: The method comprises: Obtaining a power flow result of a grid-connected port of a new energy station, and determining an initial value of an active power instruction and an initial value of a reactive power instruction of the new energy station according to the power flow result; Obtaining active output measurement values and reactive output measurement values of the clamped power supply; wherein, the new energy station port is connected in parallel to a voltage source, so that the voltage source serves as the clamped power supply; Performing steady-state automatic adjustment of the new energy station according to the active power command initial value, the reactive power command initial value, the active output measurement value, and the reactive output measurement value until the active output and reactive output of the clamped power source are both within the preset threshold value, and obtaining the final new energy station active power command, new energy equipment reactive power command, and new energy station SVG reactive power command; The new energy station is controlled based on the final new energy station active power instruction, the new energy equipment reactive power instruction and the new energy station SVG reactive power instruction, so that the new energy station enters a steady state.

2. The method according to claim 1, characterized in that The method further comprises: The voltage source amplitude and voltage source phase angle of the clamped power supply are set according to the power flow result; wherein the power flow result includes: the port voltage amplitude and port voltage phase angle of the grid-connected port of the new energy station.

3. The method according to claim 1, characterized in that The method includes: performing steady-state automatic adjustment of the new energy station according to the active power command initial value, the reactive power command initial value, the active output measurement value, and the reactive output measurement value until the active output and the reactive output of the clamped power source are both within a preset threshold value, and obtaining a final new energy station active power command, a new energy equipment reactive power command, and a new energy station SVG reactive power command, including: Step 1: Perform steady-state automatic adjustment of the new energy station based on the initial value of the active power command, the initial value of the reactive power command, and the current active and reactive power outputs, and obtain the current active power command of the new energy station, the reactive power command of the new energy equipment, and the reactive power command of the new energy station SVG; Step 2: Input the current active power command of the new energy station, the reactive power command of the new energy equipment, and the reactive power command of the new energy station SVG into the electromagnetic transient simulation model of the new energy station to control the active power and reactive power of the ports of the new energy station, thereby adjusting and updating the active power output and reactive power output of the clamped power supply; Step 3, determine whether the current active output and reactive output of the clamped power supply are both preset thresholds; if so, disconnect the clamped power supply, and determine that the current new energy station active power instruction, new energy equipment reactive power instruction, and new energy station SVG reactive power instruction are the final new energy station active power instruction, new energy equipment reactive power instruction, and new energy station SVG reactive power instruction; if not, return to step 1 and recalculate until the current active power output and reactive power output of the clamped power supply are both preset thresholds, and then determine the final new energy station active power instruction, new energy equipment reactive power instruction, and new energy station SVG reactive power instruction.

4. The method according to claim 3, characterized in that The steady-state automatic adjustment of the new energy station according to the active power instruction initial value, the reactive power instruction initial value, the current active power output and the reactive power output includes: Calculate a first difference between the preset threshold and the current reactive output, use the first difference as the B channel input of the first selector, input the preset threshold into the A channel of the first selector, use the output of the first selector as the input of the first first-order low-pass filter link, and use the output of the first first-order low-pass filter link as the input of the first proportional-integral regulator; use the sum of the output of the first proportional-integral regulator and the reactive instruction initial value as the B channel input of the second selector, input the reactive instruction initial value into the A channel of the second selector, connect the output of the second selector to the input of the second first-order low-pass filter, use the output of the second first-order low-pass filter as the input of the limiting link, determine the reactive instruction of the new energy equipment according to the output of the limiting link, and determine the reactive instruction of the new energy station SVG according to the difference between the output of the second first-order low-pass filter and the output of the limiting link; Calculate the second difference between the preset threshold and the current active power output, use the second difference as the B channel input of the third selector, use the preset threshold as the A channel input of the third selector, use the output of the third selector as the input of the third first-order low-pass filter link, and use the output of the third first-order low-pass filter link as the input of the second proportional-integral regulator; use the sum of the output of the second proportional-integral regulator and the initial value of the active power instruction as the B channel input of the fourth selector, use the A channel input of the fourth selector as the initial value of the active power instruction, connect the output of the fourth selector to the input of the fourth first-order low-pass filter T4, and determine the active power instruction of the new energy station according to the output of the fourth first-order low-pass filter.

5. A steady-state automatic adjustment system for a new energy station in electromagnetic transient simulation, characterized in that: The system comprises: An instruction initial value determination unit is used to obtain a power flow result of a grid-connected port of a new energy station, and determine an active power instruction initial value and a reactive power instruction initial value of the new energy station according to the power flow result; There is a reactive power acquisition unit, which is used to obtain the active power output measurement value and the reactive power output measurement value of the clamped power supply; wherein, the new energy station port is connected in parallel to the voltage source, so that the voltage source is used as the clamped power supply; An automatic adjustment unit, configured to perform steady-state automatic adjustment of the new energy station according to the active power command initial value, the reactive power command initial value, the active output measurement value, and the reactive output measurement value, until the active output and reactive output of the clamped power source are both within a preset threshold value, and obtain a final new energy station active power command, new energy equipment reactive power command, and new energy station SVG reactive power command; The control unit is used to control the new energy station based on the final new energy station active power instruction, the new energy equipment reactive power instruction and the new energy station SVG reactive power instruction, so that the new energy station enters a steady state.

6. The system according to claim 5, characterized in that The system further comprises: A setting unit is used to set the voltage source amplitude and voltage source phase angle of the clamped power supply according to the power flow result; wherein the power flow result includes: the port voltage amplitude and port voltage phase angle of the grid-connected port of the new energy station.

7. The system according to claim 5, characterized in that The automatic adjustment unit performs steady-state automatic adjustment of the new energy station according to the active power command initial value, the reactive power command initial value, the active output measurement value, and the reactive output measurement value until the active output and the reactive output of the clamped power source are both within a preset threshold value, and obtains a final new energy station active power command, a new energy equipment reactive power command, and a new energy station SVG reactive power command, including: The instruction acquisition module is used to automatically adjust the steady state of the new energy station according to the initial value of the active power instruction, the initial value of the reactive power instruction, the current active output and reactive output, and obtain the current active power instruction of the new energy station, the reactive power instruction of the new energy equipment, and the reactive power instruction of the new energy station SVG; A control module is used to input the current new energy station active power instruction, new energy equipment reactive power instruction, and new energy station SVG reactive power instruction into the new energy station electromagnetic transient simulation model to control the active and reactive power of the new energy station port, thereby updating the active output and reactive output of the clamped power supply; The instruction determination module is used to determine whether the current active output and reactive output of the clamped power supply are both preset thresholds; if so, the clamped power supply is disconnected, and the current new energy station active instruction, new energy equipment reactive instruction and new energy station SVG reactive instruction are determined to be the final new energy station active instruction, new energy equipment reactive instruction and new energy station SVG reactive instruction; if not, the instruction acquisition module is entered to recalculate until the current active output and reactive output of the clamped power supply are both preset thresholds, and the final new energy station active instruction, new energy equipment reactive instruction and new energy station SVG reactive instruction are determined.

8. The system according to claim 5, wherein: The automatic adjustment unit performs steady-state automatic adjustment of the new energy station according to the active power instruction initial value, the reactive power instruction initial value, the current active power output and the reactive power output, including: Calculate a first difference between the preset threshold and the current reactive output, use the first difference as the B channel input of the first selector, input the preset threshold into the A channel of the first selector, use the output of the first selector as the input of the first first-order low-pass filter link, and use the output of the first first-order low-pass filter link as the input of the first proportional-integral regulator; use the sum of the output of the first proportional-integral regulator and the reactive instruction initial value as the B channel input of the second selector, input the reactive instruction initial value into the A channel of the second selector, connect the output of the second selector to the input of the second first-order low-pass filter, use the output of the second first-order low-pass filter as the input of the limiting link, determine the reactive instruction of the new energy equipment according to the output of the limiting link, and determine the reactive instruction of the new energy station SVG according to the difference between the output of the second first-order low-pass filter and the output of the limiting link; Calculate the second difference between the preset threshold and the current active power output, use the second difference as the B channel input of the third selector, use the preset threshold as the A channel input of the third selector, use the output of the third selector as the input of the third first-order low-pass filter link, and use the output of the third first-order low-pass filter link as the input of the second proportional-integral regulator; use the sum of the output of the second proportional-integral regulator and the initial value of the active power instruction as the B channel input of the fourth selector, use the A channel input of the fourth selector as the initial value of the active power instruction, connect the output of the fourth selector to the input of the fourth first-order low-pass filter T4, and determine the active power instruction of the new energy station according to the output of the fourth first-order low-pass filter.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.

10. An electronic device, characterized in that: include: The computer-readable storage medium of claim 9; as well as One or more processors are configured to execute the program in the computer-readable storage medium.

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