Excitation method, device, storage medium and electronic equipment for magnetic control transformer

Abstract

The present invention discloses an excitation method, device, storage medium and electronic device for a magnetically controlled transformer. The method comprises: obtaining target demand information of a magnetic valve in a magnetically controlled transformer, wherein the target demand information is used to characterize the requirement for increasing the saturation of the magnetic valve; determining the target working state of the excitation control system in the magnetically controlled transformer based on the target demand information, wherein the target working state is used to enable the normal operation of the magnetically controlled transformer; determining the target DC bus voltage of the magnetically controlled transformer based on the initial saturation information and the target working state of the magnetic valve, wherein the initial saturation information is used to characterize the magnetization degree of the magnetic valve in the initial working state; increasing the saturation of the magnetic valve based on the target DC bus voltage to obtain the target saturation information of the magnetic valve, wherein the magnetic flux in the target saturation information is greater than the magnetic flux in the initial saturation information. The present invention solves the technical problem that the magnetically controlled transformer cannot be effectively and quickly excited.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to an excitation method, device, storage medium and electronic equipment for a magnetically controlled transformer. Background Art

[0002] At present, the magnetron transformer is usually excited by directly applying a DC excitation power supply to the outside of the magnetron transformer. If a voltage source power supply is used, after the output voltage is changed according to demand, the current needs a transition process to reach the target value, and the adjustment is relatively slow; if a current source power supply is used, although the purpose of increasing the magnetic flux of the transformer can be achieved by directly changing the current output by the DC current source, it is not conducive to the overall cost control of the equipment and the long-term safe and stable operation, resulting in the technical problem of being unable to effectively and quickly excite the magnetron transformer.

[0003] With respect to the above-mentioned technical problem of being unable to effectively and quickly excite the magnetically controlled transformer, no effective solution has been proposed so far. Summary of the invention

[0004] The embodiments of the present invention provide an excitation method, device, storage medium and electronic device for a magnetically controlled transformer, so as to at least solve the technical problem that the magnetically controlled transformer cannot be effectively and quickly excited.

[0005] According to one aspect of the embodiments of the invention, a method for excitation of a magnetically controlled transformer is provided. The method may include: obtaining target demand information of a magnetic valve in a magnetically controlled transformer, wherein the target demand information is used to characterize the requirement for increasing the saturation of the magnetic valve; determining a target working state of an excitation control system in the magnetically controlled transformer based on the target demand information, wherein the target working state is used to enable the magnetically controlled transformer to operate normally; determining a target DC bus voltage of the magnetically controlled transformer based on initial saturation information and the target working state of the magnetic valve, wherein the initial saturation information is used to characterize the degree of magnetization of the magnetic valve in the initial working state; increasing the saturation of the magnetic valve based on the target DC bus voltage to obtain target saturation information of the magnetic valve, wherein the magnetic flux in the target saturation information is greater than the magnetic flux in the initial saturation information.

[0006] Optionally, based on the target demand information, determining the target operating state of the excitation control system in the magnetically controlled transformer includes: based on the target demand information, determining the target operating state to be a rectification state, wherein the rectification state is used to excite the magnetically controlled transformer.

[0007] Optionally, based on the initial saturation information and the target operating state of the magnetic valve, the target DC bus voltage of the magnetically controlled transformer is determined, including: based on the initial saturation information and the target operating state, determining the initial DC bus voltage, the initial AC bus voltage and the initial AC bus current in the excitation control system; based on the initial AC bus voltage, using the phase-locked loop in the excitation control system, determining the target phase of the initial AC bus voltage; based on the initial DC bus voltage, the initial AC bus voltage, the initial AC bus current, the target phase, and a reference DC bus voltage corresponding to the initial DC bus voltage, determining the target DC bus voltage.

[0008] Optionally, the target DC bus voltage is determined based on the initial DC bus voltage, the initial AC bus voltage, the initial AC bus current, the target phase, and a reference DC bus voltage corresponding to the initial DC bus voltage, including: performing a first transformation processing on the initial AC bus voltage and the initial AC bus current to obtain first target transformation data of the initial AC bus voltage and the initial AC bus current in a two-phase stationary coordinate system; performing a second transformation processing on the first target transformation data and the target phase to obtain second target transformation data of the target transformation data and the target phase in a two-phase orthogonal rotating coordinate system; subtracting the reference DC bus voltage from the initial DC bus voltage to obtain a first difference; inputting the first difference into a target controller to obtain a first control signal corresponding to the first difference; and determining the target DC bus voltage based on the target phase, the first control signal, the DC current component in the second target transformation data, the AC current component in the second target transformation data, and the reference AC current component corresponding to the AC current component.

[0009] Optionally, the target DC bus voltage is determined based on the target phase, the first control signal, the DC current component in the second target transformation data, the AC current component in the second target transformation data, and a reference AC current component corresponding to the AC current component, including: subtracting the AC current component from the reference AC current component to obtain a second difference; inputting the second difference into the target controller to obtain a second control signal corresponding to the second difference; subtracting the first control data corresponding to the first control signal from the DC current component to obtain a third difference; inputting the third difference into the target controller to obtain a third control signal corresponding to the third difference; and determining the target DC bus voltage based on the second control signal, the third control signal and the target phase.

[0010] Optionally, based on the second control signal, the third control signal and the target phase, the target DC bus voltage is determined, including: performing a second transformation processing on the second control signal, the third control signal and the target phase to obtain a target pulse signal of the magnetically controlled transformer; based on the target pulse signal, the target DC bus voltage is determined.

[0011] Optionally, based on the target DC bus voltage, the saturation of the magnetic valve is increased to obtain target saturation information of the magnetic valve, including: within a target time period, based on the target DC bus voltage, determining a target duty cycle after at least one switch tube in the excitation control system is turned on; based on the target duty cycle, increasing the saturation of the magnetic valve to obtain target saturation information.

[0012] According to one aspect of an embodiment of the present invention, an excitation device for a magnetically controlled transformer is provided. The device may include: a first acquisition unit, used to acquire target demand information of a magnetic valve in the magnetically controlled transformer, wherein the target demand information is used to characterize the requirement for increasing the saturation of the magnetic valve; a first determination unit, used to determine the target working state of the excitation control system in the magnetically controlled transformer based on the target demand information, wherein the target working state is used to enable the magnetically controlled transformer to operate normally; a second determination unit, used to determine the target DC bus voltage of the magnetically controlled transformer based on the initial saturation information and the target working state of the magnetic valve, wherein the initial saturation information is used to characterize the degree of magnetization of the magnetic valve in the initial working state; a second acquisition unit, used to increase the saturation of the magnetic valve based on the target DC bus voltage to obtain the target saturation information of the magnetic valve, wherein the magnetic flux in the target saturation information is greater than the magnetic flux in the initial saturation information.

[0013] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored program, wherein when the program is executed by a processor, the device where the storage medium is located is controlled to execute the method in the embodiment of the present invention.

[0014] According to another aspect of an embodiment of the present invention, a processor is provided. The processor is used to run a program, wherein the method in the embodiment of the present invention is executed when the program is run.

[0015] According to another aspect of the embodiments of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method in the embodiments of the present invention is implemented.

[0016] According to another aspect of an embodiment of the present invention, an electronic device is provided, the electronic device comprising a processor and a memory for storing instructions executable by the processor, wherein the processor is configured to execute the instructions to implement the method in the embodiment of the present invention.

[0017] In an embodiment of the present invention, target demand information of a magnetic valve in a magnetically controlled transformer is obtained, wherein the target demand information is used to characterize the requirement for increasing the saturation of the magnetic valve; based on the target demand information, the target working state of the excitation control system in the magnetically controlled transformer is determined, wherein the target working state is used to make the magnetically controlled transformer operate normally; based on the initial saturation information of the magnetic valve and the target working state, the target DC bus voltage of the magnetically controlled transformer is determined, wherein the initial saturation information is used to characterize the magnetization degree of the magnetic valve in the initial working state; based on the target DC bus voltage, the saturation of the magnetic valve is increased to obtain the target saturation information of the magnetic valve, wherein the magnetic flux in the target saturation information is greater than the magnetic flux in the initial saturation information. That is, in an embodiment of the present invention, the target demand information for characterizing the requirement for increasing the saturation of the magnetic valve in the magnetically controlled transformer can be first obtained, and then the target working state of the excitation control system in the magnetically controlled transformer can be determined according to the target demand information obtained above, and then the target DC bus voltage of the magnetically controlled transformer can be determined according to the initial saturation information of the magnetic valve and the target working state obtained above, and finally the saturation of the magnetic valve can be increased according to the target DC bus voltage, thereby achieving the purpose of obtaining the target saturation information of the magnetic valve. Considering that after obtaining the target demand information of the magnetic valve, the target operating state of the excitation control system can be determined. Further, based on the initial saturation information and the target operating state of the magnetic valve, the target DC bus voltage of the magnetically controlled transformer can be determined. According to the target DC bus voltage, the saturation of the magnetic valve can be increased to excite the magnetically controlled transformer, so as to obtain the target saturation information of the magnetic valve, thereby solving the technical problem of being unable to effectively and quickly excite the magnetically controlled transformer and achieving the technical effect of effectively and quickly exciting the magnetically controlled transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 is a flow chart of an excitation method for a magnetically controlled transformer according to an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of an excitation control system according to an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of a trigger control module in an excitation control system according to an embodiment of the present invention;

[0022] Figure 4 Schematic diagram of an excitation device of a magnetically controlled transformer according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] According to an embodiment of the present invention, a method for excitation of a magnetically controlled transformer is provided. It should be noted that in the flowchart of the accompanying drawings, the steps shown therein can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0026] The following is an introduction to the excitation method of the magnetically controlled transformer according to an embodiment of the present invention.

[0027] Figure 1 is a flow chart of an excitation method for a magnetically controlled transformer according to an embodiment of the present invention. Figure 1 As shown, the method may include the following steps:

[0028] Step S101, obtaining target demand information of a magnetic valve in a magnetically controlled transformer.

[0029] In the technical solution provided in step S101 of the present invention, target demand information of the magnetic valve in the magnetically controlled transformer can be obtained. The target demand information is used to characterize the demand for increasing the saturation of the magnetic valve. The magnetic valve in the magnetically controlled transformer is used to control the strength and direction of the magnetic field, thereby adjusting the output voltage of the transformer.

[0030] Optionally, the core in the magnetically controlled transformer has nonlinearity, and the shape of the nonlinearity approximates the first quadrant half of the target function (arctan). Under normal circumstances, the slope (magnetic permeability) is large and approximately linear. When additional excitation is added to gradually saturate it, the nonlinear characteristics can be used to achieve effects such as reactive power compensation and voltage regulation.

[0031] Optionally, original demand information of the magnetic valve in the magnetically controlled transformer is obtained, wherein the original demand information can be used to characterize the requirement for reducing the saturation of the magnetic valve. It should be noted that only the original demand information of the magnetic valve is given as an example here, and the content of the original demand information of the magnetic valve is not specifically limited.

[0032] For example, target demand information for characterizing the need to increase the saturation of the magnetic valve in the magnetically controlled transformer is obtained, or original demand information for characterizing the need to reduce the saturation of the magnetic valve in the magnetically controlled transformer is obtained, and then the next step of processing can be performed based on the target demand information or original demand information obtained above.

[0033] Step S102: determining a target operating state of an excitation control system in a magnetically controlled transformer based on target demand information.

[0034] In the technical solution provided in step S102 of the present invention, after obtaining the target demand information, the purpose of determining the target working state of the excitation control system in the magnetically controlled transformer can be achieved. The target working state is used to make the magnetically controlled transformer operate normally. The excitation control system can be referred to as the excitation system.

[0035] Optionally, according to the target demand information, the target working state of the excitation control system can be determined as a state of exciting the magnetically controlled transformer, and then according to the working state at this time, the saturation of the magnetic valve can be increased.

[0036] Optionally, after obtaining the original demand information, the target working state of the excitation control system can be determined as a state of demagnetizing the magnetically controlled transformer, and then according to the working state at this time, the saturation of the magnetic valve can be reduced.

[0037] For example, after obtaining the target demand information, the target working state of the excitation control system can be determined to be the state of exciting the magnetically controlled transformer; after obtaining the original demand information, the target working state of the excitation control system can be determined to be the state of demagnetizing the magnetically controlled transformer.

[0038] It should be noted that this is only a preferred implementation method for determining the target operating state of the excitation control system, and does not specifically limit the process and method for determining the target operating state of the excitation control system. As long as the method and process for determining the target operating state of the excitation control system are based on the target demand information, they are within the protection scope of the present invention and are not listed here.

[0039] Step S103, determining a target DC bus voltage of the magnetically controlled transformer based on the initial saturation information and the target working state of the magnetic valve.

[0040] In the technical solution provided in the above step S103 of the present invention, the target DC bus voltage of the magnetically controlled transformer can be determined based on the initial saturation information and the target working state of the magnetic valve by utilizing the excitation control system, wherein the initial saturation information is used to characterize the degree of magnetization of the magnetic valve in the initial working state.

[0041] Optionally, after determining that the target operating state of the excitation control system is a state of exciting the magnetically controlled transformer, the target DC bus voltage of the magnetically controlled transformer may be determined based on initial saturation information of the magnetic valve.

[0042] Optionally, after determining that the target working state of the excitation control system is a state of demagnetizing the magnetic control transformer, the first DC bus voltage of the magnetic control transformer is determined according to the initial saturation information of the magnetic valve, wherein the first DC bus voltage is less than the target DC bus voltage.

[0043] For example, after determining that the target operating state of the excitation control system is the state of exciting the magnetically controlled transformer, the target DC bus voltage of the magnetically controlled transformer at this time can be determined based on the acquired initial saturation information of the magnetic valve, thereby achieving the purpose of increasing the saturation of the magnetic valve based on the target DC bus voltage.

[0044] Step S104: based on the target DC bus voltage, the saturation of the magnetic valve is increased to obtain target saturation information of the magnetic valve.

[0045] In the technical solution provided in the above step S104 of the present invention, after obtaining the target DC bus voltage, the saturation of the magnetic valve can be increased to obtain the target saturation information of the magnetic valve, wherein the magnetic flux in the target saturation information is greater than the magnetic flux in the initial saturation information.

[0046] For example, when it is necessary to increase the saturation of the magnetic valve of the magnetically controlled transformer, the target working state of the excitation system can be determined as the excitation state. At this time, the DC voltage across the DC excitation coil is increased accordingly, and the DC current is increased, thereby increasing the saturation of the magnetic valve, so as to obtain the target saturation information of the magnetic valve.

[0047] Optionally, after determining the first DC bus voltage of the magnetically controlled transformer, the saturation of the magnetic valve may be reduced to obtain first saturation information of the magnetic valve, wherein the magnetic flux in the first saturation information is smaller than the magnetic flux in the initial saturation information.

[0048] In the above steps S101 to S104 of the present invention, the target demand information for characterizing the saturation demand of increasing the magnetic valve in the magnetic control transformer can be first obtained, and then the target working state of the excitation control system in the magnetic control transformer can be determined according to the above target demand information, and then the target DC bus voltage of the magnetic control transformer can be determined according to the initial saturation information of the magnetic valve and the above target working state obtained, and finally the saturation of the magnetic valve can be increased according to the target DC bus voltage, so as to achieve the acquisition of the target saturation information of the magnetic valve. Considering that after obtaining the target demand information of the magnetic valve, the target working state of the excitation control system can be determined, further, based on the initial saturation information and the target working state of the magnetic valve, the target DC bus voltage of the magnetic control transformer can be determined, and according to the target DC bus voltage, the saturation of the magnetic valve can be increased, so as to achieve the excitation of the magnetic control transformer, so as to obtain the target saturation information of the magnetic valve, so as to solve the technical problem that the magnetic control transformer cannot be effectively and quickly excited, and achieve the technical effect that the magnetic control transformer can be effectively and quickly excited.

[0049] The above method of this embodiment is further introduced below.

[0050] As an optional implementation method, based on the target demand information, the target operating state of the excitation control system in the magnetically controlled transformer is determined, including: based on the target demand information, determining that the target operating state is a rectification state, wherein the rectification state is used to excite the magnetically controlled transformer.

[0051] In this embodiment, after obtaining the target demand information, it can be determined that the target working state of the excitation control system at this time is the rectification state, so that the magnetic control transformer can be excited. For example, when it is necessary to increase the saturation of the magnetic valve of the magnetic control transformer, it can be determined that the excitation system works in the rectification state, so that the saturation of the magnetic valve can be increased to achieve the purpose of excitation of the magnetic control transformer.

[0052] Optionally, if the original demand information of the magnetic valve in the magnetic control transformer is obtained, it can be determined that the target working state of the excitation control system is the inverter state at this time, so as to demagnetize the magnetic control transformer. For example, when it is necessary to reduce the saturation of the magnetic valve of the magnetic control transformer, it is determined that the target working state of the excitation system is in the inverter state, and the DC excitation energy can be reversely inverted and sent back to the power grid to achieve rapid attenuation of the DC excitation energy.

[0053] As an optional implementation method, based on the initial saturation information and target operating state of the magnetic valve, the target DC bus voltage of the magnetically controlled transformer is determined, including: based on the initial saturation information and the target operating state, determining the initial DC bus voltage, the initial AC bus voltage and the initial AC bus current in the excitation control system; based on the initial AC bus voltage, using the phase-locked loop in the excitation control system, determining the target phase of the initial AC bus voltage; based on the initial DC bus voltage, the initial AC bus voltage, the initial AC bus current, the target phase, and a reference DC bus voltage corresponding to the initial DC bus voltage, determining the target DC bus voltage.

[0054] In this embodiment, after obtaining the initial saturation information and target working state of the magnetic valve, the initial DC bus voltage, initial AC bus voltage and initial AC bus current in the excitation control system can be determined by using multiple voltage and current sampling devices in the excitation system, and then the initial AC bus voltage is obtained according to the above, and the phase-locked loop (PLL) in the excitation control system can be used to determine the target phase of the initial AC bus voltage. Finally, according to the initial DC bus voltage, the initial AC bus voltage, the initial AC bus current, the target phase, and the reference DC bus voltage corresponding to the initial DC bus voltage, the target DC bus voltage of the magnetic control transformer can be determined. Among them, the phase-locked loop can be a component that obtains the phase of the voltage through an algorithm, and is a mature electronic device (structure) with a variety of common and different structures, which can be used directly.

[0055] Optionally, the initial DC bus voltage may be referred to as the actual DC excitation voltage, which may be referred to as the DC bus voltage for short, and may be expressed by u dc The initial AC bus voltage can be referred to as the AC bus voltage, which can be expressed by u a 、u b 、u c The initial AC bus current can be referred to as the AC bus current, which can be expressed by i a 、i b 、i c The target phase can be referred to as phase, which can be represented by θ. The reference DC bus voltage can be referred to as reference voltage, which can be represented by u * dc To express.

[0056] Optionally, after obtaining the initial DC bus voltage, the initial AC bus voltage and the initial AC bus current, a space vector pulse width modulation (SVPWM) strategy can be used for the switch tube in the excitation system to control the current in the conduction loop of the switch tube in the excitation system so as to achieve the saturation control of the magnetic valve. The SVPWM strategy is used to characterize the control of the saturation of the magnetic valve according to the initial saturation information and the target working state, so as to achieve the purpose of obtaining the target DC bus voltage of the magnetic control transformer. The SVPWM strategy can be called the SVPWM control strategy. The switch tube can be a controllable bidirectional power electronic switch tube, such as an insulated gate bipolar transistor (IGBT) and a metal-oxide-semiconductor field-effect transistor (MOSFET).

[0057] For example, after obtaining the initial saturation information and target working state of the magnetic valve, the DC bus voltage u can be obtained by using multiple voltage and current sampling devices contained in the excitation system. dc , AC bus voltage u a 、u b 、u c , AC bus current i a 、i b 、i c , using SVPWM strategy, so that the AC bus voltage u a 、u b 、u c After passing through the phase-locked loop in the excitation control system, the phase θ of the AC bus voltage can be obtained, and then the DC bus voltage u can be obtained according to the above dc , AC bus voltage u a 、u b 、u c , AC bus current i a 、i b 、i c , phase θ, and reference DC bus voltage u * dc , to determine the target DC bus voltage of the magnetic control transformer.

[0058] As an optional implementation method, the target DC bus voltage is determined based on the initial DC bus voltage, the initial AC bus voltage, the initial AC bus current, the target phase, and the reference DC bus voltage corresponding to the initial DC bus voltage, including: performing a first transformation processing on the initial AC bus voltage and the initial AC bus current to obtain first target transformation data of the initial AC bus voltage and the initial AC bus current in a two-phase stationary coordinate system; performing a second transformation processing on the first target transformation data and the target phase to obtain second target transformation data of the target transformation data and the target phase in a two-phase orthogonal rotating coordinate system; subtracting the reference DC bus voltage from the initial DC bus voltage to obtain a first difference; inputting the first difference into a target controller to obtain a first control signal corresponding to the first difference; and determining the target DC bus voltage based on the target phase, the first control signal, the DC current component in the second target transformation data, the AC current component in the second target transformation data, and the reference AC current component corresponding to the AC current component.

[0059] In this embodiment, after obtaining the initial DC bus voltage, the initial AC bus voltage, the initial AC bus current, the target phase, and the reference DC bus voltage corresponding to the initial DC bus voltage, the initial AC bus voltage and the initial AC bus current can be subjected to a first transformation process to obtain first target transformation data, and then the first target transformation data and the target phase can be subjected to a second transformation process to obtain second target transformation data; the reference DC bus voltage and the initial DC bus voltage can be subtracted to obtain a first difference, and the first difference obtained above is input into the target controller to obtain a first control signal, and the target phase obtained above, the first control signal, the DC current component in the second target transformation data, the AC current component in the second target transformation data, and the reference AC current component corresponding to the AC current component can be used to achieve the purpose of obtaining the target DC bus voltage.

[0060] Optionally, the first transformation process may be represented by an abc-αβ-dq transformation process, wherein the abc-αβ-dq transformation process may be represented by the following formula:

[0061] .

[0062] Optionally, the second transformation process may be represented by a dq-αβ transformation process, wherein the dq-αβ transformation process may be represented by the following formula:

[0063] .

[0064] Optionally, the target controller may be a controller specified in the excitation control system, such as a proportional-integral (PI) controller. The DC current component in the second target transformation data may be obtained by i d The AC current component in the second target transformation data can be represented by i q The reference AC current component can be represented by i * q To express.

[0065] For example, when obtaining the DC bus voltage u dc , AC bus voltage u a 、u b 、u c , AC bus current i a 、i b 、i c , using SVPWM strategy, so that the AC bus voltage u a 、u b 、u c After the phase θ of the AC bus voltage is obtained through the phase-locked loop in the excitation control system, the reference voltage u is input according to the required DC excitation voltage. * dc , and the actual DC excitation voltage u dc The difference of can be passed through the PI link to obtain the first control signal, thereby achieving the determination of the target DC bus voltage. The PI link can be a mature and widely used control strategy, which is mainly used to track the target so that the controlled object becomes the target.

[0066] As an optional implementation method, the target DC bus voltage is determined based on the target phase, the first control signal, the DC current component in the second target transformation data, the AC current component in the second target transformation data, and the reference AC current component corresponding to the AC current component, including: subtracting the AC current component from the reference AC current component to obtain a second difference; inputting the second difference into the target controller to obtain a second control signal corresponding to the second difference; subtracting the first control data corresponding to the first control signal from the DC current component to obtain a third difference; inputting the third difference into the target controller to obtain a third control signal corresponding to the third difference; and determining the target DC bus voltage based on the second control signal, the third control signal and the target phase.

[0067] In this embodiment, the acquired AC current component and the reference AC current component can be subtracted to obtain a second difference, and the second difference obtained above is input into the target controller to obtain a second control signal. Furthermore, the first control data corresponding to the first control signal and the DC current component are subtracted to obtain a third difference, and the third difference is input into the target controller to obtain a third control signal corresponding to the third difference. Through the second control signal, the third control signal and the target phase, the purpose of determining the target DC bus voltage can be achieved.

[0068] For example, the alternating current component i q and the reference AC current component i * q After the difference is made, the second control signal can be obtained through the PI link; the first control data and the DC current component i d After the difference is made, the third control signal can be obtained through the PI link, and then the second control signal, the third control signal and the target phase obtained above are further processed to determine the target DC bus voltage.

[0069] As an optional implementation method, the target DC bus voltage is determined based on the second control signal, the third control signal and the target phase, including: performing a second transformation processing on the second control signal, the third control signal and the target phase to obtain a target pulse signal of the magnetically controlled transformer; and determining the target DC bus voltage based on the target pulse signal.

[0070] In this embodiment, after obtaining the second control signal, the third control signal and the target phase, the second control signal, the third control signal and the target phase can be subjected to a second transformation process to achieve the purpose of obtaining the target pulse signal of the magnetically controlled transformer, and then according to the target pulse signal obtained above, the excitation control system is used to obtain the target DC bus voltage. The target pulse signal can be called a trigger pulse signal.

[0071] For example, after the target phase θ, the second control signal and the third control signal are processed by dq-αβ transformation, a trigger pulse signal of the magnetically controlled transformer can be obtained, and the trigger pulse signal is sent to the switch tube of the excitation control system to realize the excitation of the magnetically controlled transformer, thereby determining the target DC bus voltage.

[0072] As an optional implementation method, based on the target DC bus voltage, the saturation of the magnetic valve is increased to obtain the target saturation information of the magnetic valve, including: within the target time period, based on the target DC bus voltage, determining the target duty cycle after at least one switch tube in the excitation control system is turned on; based on the target duty cycle, increasing the saturation of the magnetic valve to obtain the target saturation information.

[0073] In this embodiment, after obtaining the target DC bus voltage, the target duty cycle of at least one switch tube in the excitation control system after being turned on within the target time period can be determined, and then the saturation of the magnetic valve is increased according to the target duty cycle obtained above, thereby obtaining the target saturation information. The target time period can be a preset time period, and the target time period is only illustrated here by way of example, without being specifically limited.

[0074] Optionally, after obtaining the target DC bus voltage, an SVPWM control strategy is adopted to control the duty cycle of at least one switch tube loop in the bridge structure of the excitation control system, so as to control the size of the DC voltage of the DC excitation, thereby affecting the size of the DC current, thereby achieving the purpose of adjusting the saturation of the magnetic valve.

[0075] Optionally, when the saturation of the magnetic valve of the magnetically controlled transformer needs to be increased, the excitation control system can be determined to be operating in a rectifier state, and the SVPWM control strategy can be adopted to increase the duty cycle of at least one switch tube loop in the bridge structure of the excitation control system, so that the target DC bus voltage at both ends of the DC excitation coil is immediately increased, and the DC current is increased, thereby achieving the purpose of increasing the saturation of the magnetic valve and obtaining the target saturation information. The bridge structure can include three switch tube loops.

[0076] Optionally, when the magnetic valve needs to be demagnetized quickly, the excitation control system is determined to be operating in an inverter state, and an SVPWM control strategy is adopted to reversely invert the DC excitation energy and send it back to the power grid, thereby reducing the duty cycle of at least one switch tube loop in the bridge structure of the excitation control system, thereby reducing the target DC bus voltage and the DC current, thereby achieving rapid attenuation of the DC excitation energy and reducing the saturation of the magnetic valve, so as to obtain target saturation information.

[0077] Optionally, the SVPWM control strategy refers to, u a 、u b 、u c After the phase-locked loop PLL, the phase θ of the AC bus voltage can be obtained, and the reference voltage u can be input according to the required DC excitation voltage. * dc , and the actual DC excitation voltage u dc The difference between the two passes through the PI link and then is combined with i d After the obtained value passes through the PI link again, the trigger pulse signal of SVPWM can be obtained by using dq-αβ transformation. d The vector direction of the grid is the same as the vector direction of the grid (simplified: i dThe angle between the vector direction of the excitation system and the vector direction of the power grid is 0, then the sin value is 0, the cos value is 1, the square root does not appear in the operation, and the computer operation is faster). In order to reduce the reactive power impact of the excitation system on the power grid, set i * q = 0.

[0078] It should be noted that this is only a preferred implementation method for obtaining the target saturation information of the magnetic valve, and does not specifically limit the process and method for obtaining the target saturation information of the magnetic valve. As long as the process and method for obtaining the target saturation information of the magnetic valve are achieved through the target DC bus voltage, they are within the protection scope of the present invention and will not be repeated here.

[0079] In this embodiment, the target demand information for characterizing the requirement for increasing the saturation of the magnetic valve in the magnetic control transformer can be obtained first, and then the target working state of the excitation control system in the magnetic control transformer can be determined according to the target demand information obtained above, and then the target DC bus voltage of the magnetic control transformer can be determined according to the initial saturation information of the magnetic valve and the target working state obtained above, and finally the saturation of the magnetic valve can be increased according to the target DC bus voltage, so as to obtain the target saturation information of the magnetic valve. Considering that the target working state of the excitation control system can be determined after obtaining the target demand information of the magnetic valve, further, based on the initial saturation information and the target working state of the magnetic valve, the target DC bus voltage of the magnetic control transformer can be determined, and according to the target DC bus voltage, the saturation of the magnetic valve can be increased, so as to excite the magnetic control transformer, so as to obtain the target saturation information of the magnetic valve, so as to solve the technical problem that the magnetic control transformer cannot be effectively and quickly excited, and achieve the technical effect that the magnetic control transformer can be effectively and quickly excited.

[0080] The technical solution of the embodiment of the present invention is illustrated below in conjunction with preferred implementation modes.

[0081] At present, excitation is performed by directly applying a DC excitation power supply to the outside of the magnetic control transformer. If a voltage source power supply is used, after the output voltage is changed according to demand, the current needs a transition process to reach the target value (exponential increase or decay), and the adjustment is relatively slow; if a current source power supply is used, although the current output by the DC current source can be changed by directly changing the current size, on the one hand, the jump of the current will induce a large voltage in the coil, which is not conducive to the overall insulation design of the equipment. On the other hand, the control of the current source is relatively complex and expensive, which is not conducive to the overall cost control of the equipment and long-term safe and stable operation, resulting in the technical problem of being unable to effectively excite the magnetic control transformer quickly.

[0082] Therefore, in order to solve the above problems, the present invention proposes a response method for rapid excitation of a magnetically controlled transformer, which can first obtain target demand information for characterizing the need to increase the saturation of a magnetic valve in the magnetically controlled transformer, and then determine the target working state of the excitation control system in the magnetically controlled transformer according to the target demand information obtained above, and then determine the target DC bus voltage of the magnetically controlled transformer according to the initial saturation information of the magnetic valve and the target working state obtained above, and finally increase the saturation of the magnetic valve according to the target DC bus voltage, thereby obtaining the target saturation information of the magnetic valve. Considering that after obtaining the target demand information of the magnetic valve, the target working state of the excitation control system can be determined, further, based on the initial saturation information and the target working state of the magnetic valve, the target DC bus voltage of the magnetically controlled transformer is determined, and according to the target DC bus voltage, the saturation of the magnetic valve can be increased, and the magnetically controlled transformer is excited so as to obtain the target saturation information of the magnetic valve, so as to solve the technical problem that the magnetically controlled transformer cannot be effectively and rapidly excited, and achieve the technical effect that the magnetically controlled transformer can be effectively and rapidly excited.

[0083] In an embodiment of the present invention, Figure 2 is a schematic diagram of an excitation control system according to an embodiment of the present invention, such as Figure 2 As shown, the excitation control system includes: the primary winding of the magnetically controlled transformer can be controlled by U A1 , U B1 , U C1 It can be connected to the high voltage side of the power grid; the secondary winding of the magnetic control transformer can be connected through U A2 , U B2 , U C2 It can be connected to the low voltage side of the power grid; the DC excitation winding of the magnetic control transformer can be connected to the low voltage side of the power grid; A 、DC B 、DC C The three windings are connected in parallel and connected to the DC side of the power electronic rectifier inverter module. The AC side of the power electronic rectifier inverter module is also connected to the high voltage side of the power grid through an isolation transformer. A 、DC B 、DC C The power electronic rectifier inverter module and the trigger control module of the switch tube together constitute the excitation control system of the magnetic control transformer. Among them, the power electronic rectifier inverter module is used to control the bridge structure composed of controllable bidirectional power electronic switch tubes, and the trigger control module is used to obtain the trigger pulse signal of the switch tube using the SVPWM control strategy.

[0084] Optionally, a DC excitation part in a magnetically controlled transformer rapid excitation response system uses a controllable bidirectional power electronic switch tube (such as IGBT, MOSFET, etc.) to form a bridge structure to provide a DC excitation current. The control strategy of the switch tube adopts an SVPWM control strategy, which controls the DC excitation current by changing the duty cycle of the switch tube conduction, thereby controlling the saturation of the magnetic valve.

[0085] Optionally, when it is necessary to increase the saturation of the magnetic valve of the magnetically controlled transformer, it can be determined that the excitation control system is operating in a rectification state, and an SVPWM control strategy can be adopted to increase the duty cycle of at least one switch tube loop in the bridge structure of the excitation control system, so that the target DC bus voltage at both ends of the DC excitation coil increases immediately, and the DC current increases, thereby achieving the purpose of increasing the saturation of the magnetic valve.

[0086] Optionally, when the magnetic valve needs to be demagnetized quickly, the excitation control system is determined to be operating in an inverter state, and an SVPWM control strategy is adopted to reversely invert the DC excitation energy and send it back to the power grid, thereby reducing the duty cycle of at least one switch tube loop in the bridge structure of the excitation control system, thereby reducing the target DC bus voltage and the DC current, thereby achieving rapid attenuation of the DC excitation energy and achieving the purpose of reducing the saturation of the magnetic valve.

[0087] Optionally, the excitation system contains multiple voltage and current sampling devices for obtaining the DC bus voltage u dc , AC bus voltage u a 、u b 、u c , AC bus current i a 、i b 、i c .

[0088] Optionally, Figure 3 is a schematic diagram of a trigger control module in an excitation control system according to an embodiment of the present invention, such as Figure 3 As shown, the trigger control module has a sensor to obtain the DC voltage u at both ends of the excitation winding from the circuit. dc , AC bus voltage u of power electronic rectifier inverter module a 、u b 、u c , AC bus current i a 、i b 、i c In addition, there is the input desired DC voltage u across the excitation winding * dc .u a 、u b 、u c After passing through the phase-locked loop PLL, the phase θ of the AC bus voltage can be obtained, which is used as the phase reference for αβ-dq conversion.

[0089] Furthermore, in order to simplify the program, it is usually necessary to set i d The vector direction of the excitation control system is the same as the vector direction of the power grid. In order to reduce the reactive power impact of the excitation control system on the power grid, set i * q = 0. Input reference voltage u according to the required DC excitation voltage * dc , and the actual DC excitation voltage u dc The difference between the two passes through the PI link and then is combined with i d The difference is made, and the obtained value passes through the PI link again and uses the dq-αβ transformation to get the trigger pulse of SVPWM.

[0090] It should be noted that the parameters marked with * (asterisk) involved in the above process can be per-unit values, which are numbers obtained by comparing the actual value with the reference value, without units. In the embodiments of the present invention, each symbol has its conventional reference value, which varies according to the actual conditions of the actual equipment. For example: if this solution is used for a 10 kilovolt (kV) transformer, the reference value of the voltage AC (u) is 10kV, and the DC voltage u dc The reference value is the DC excitation voltage when the maximum reactive power output is achieved, and the reference value of current (i) is the rated current of the transformer. Reactive power or active power refers to the phase difference (angle θ) between current and voltage. Reactive power is the product of current and voltage multiplied by sinθ, and active power is the product of current and voltage multiplied by cosθ.

[0091] Optionally, the SVPWM control strategy refers to, u a 、u b 、u c After the phase-locked loop PLL, the phase θ of the AC bus voltage can be obtained, and the reference voltage u can be input according to the required DC excitation voltage. * dc , and the actual DC excitation voltage u dc The difference between the two passes through the PI link and then is combined with i d After the obtained value passes through the PI link again, the trigger pulse signal of SVPWM can be obtained by using dq-αβ transformation. d The vector direction of the grid is the same as the vector direction of the grid (simplified: i d The angle between the vector direction of the excitation system and the vector direction of the power grid is 0, then the sin value is 0, the cos value is 1, the square root does not appear in the operation, and the computer operation is faster). In order to reduce the reactive power impact of the excitation system on the power grid, set i * q =0.

[0092] Optionally, the dq-αβ transformation process can be expressed by the following formula:

[0093] .

[0094] Optionally, the abc-αβ-dq transformation process can be expressed by the following formula:

[0095] .

[0096] In this embodiment, the target demand information for characterizing the requirement for increasing the saturation of the magnetic valve in the magnetic control transformer can be obtained first, and then the target working state of the excitation control system in the magnetic control transformer can be determined according to the target demand information obtained above, and then the target DC bus voltage of the magnetic control transformer can be determined according to the initial saturation information of the magnetic valve and the target working state obtained above, and finally the saturation of the magnetic valve can be increased according to the target DC bus voltage, so as to obtain the target saturation information of the magnetic valve. Considering that the target working state of the excitation control system can be determined after obtaining the target demand information of the magnetic valve, further, based on the initial saturation information and the target working state of the magnetic valve, the target DC bus voltage of the magnetic control transformer can be determined, and according to the target DC bus voltage, the saturation of the magnetic valve can be increased, so as to excite the magnetic control transformer, so as to obtain the target saturation information of the magnetic valve, so as to solve the technical problem that the magnetic control transformer cannot be effectively and quickly excited, and achieve the technical effect that the magnetic control transformer can be effectively and quickly excited.

[0097] According to an embodiment of the present invention, an excitation device for a magnetically controlled transformer is provided. It should be noted that the excitation device for a magnetically controlled transformer can be used to execute an excitation method for a magnetically controlled transformer in Embodiment 1.

[0098] Figure 4 Schematic diagram of an excitation device of a magnetically controlled transformer according to an embodiment of the present invention. Figure 4 As shown, an excitation device 400 for a magnetically controlled transformer may include: a first acquisition unit 401 , a first determination unit 402 , a second determination unit 403 , and a second acquisition unit 404 .

[0099] The first acquisition unit 401 is used to acquire target demand information of a magnetic valve in a magnetically controlled transformer, wherein the target demand information is used to characterize a demand for increasing a saturation of the magnetic valve.

[0100] The first determination unit 402 is used to determine a target operating state of an excitation control system in the magnetically controlled transformer based on target demand information, wherein the target operating state is used to enable the magnetically controlled transformer to operate normally.

[0101] The second determination unit 403 is used to determine the target DC bus voltage of the magnetically controlled transformer based on the initial saturation information and the target working state of the magnetic valve, wherein the initial saturation information is used to characterize the magnetization degree of the magnetic valve in the initial working state.

[0102] The second acquisition unit 404 is used to increase the saturation of the magnetic valve based on the target DC bus voltage to obtain target saturation information of the magnetic valve, wherein the magnetic flux in the target saturation information is greater than the magnetic flux in the initial saturation information.

[0103] Optionally, the first determination unit 402 may include: a first determination module, configured to determine, based on target demand information, that the target operating state is a rectification state, wherein the rectification state is used to excite the magnetically controlled transformer.

[0104] Optionally, the second determination unit 403 may include: a second determination module, used to determine the initial DC bus voltage, initial AC bus voltage and initial AC bus current in the excitation control system based on the initial saturation information and the target operating state; a third determination module, used to determine the target phase of the initial AC bus voltage based on the initial AC bus voltage using a phase-locked loop in the excitation control system; and a fourth determination module, used to determine the target DC bus voltage based on the initial DC bus voltage, the initial AC bus voltage, the initial AC bus current, the target phase, and a reference DC bus voltage corresponding to the initial DC bus voltage.

[0105] Optionally, the fourth determination module may include: a first processing submodule, used to perform a first transformation processing on the initial AC bus voltage and the initial AC bus current to obtain first target transformation data of the initial AC bus voltage and the initial AC bus current in a two-phase stationary coordinate system; a second processing submodule, used to perform a second transformation processing on the first target transformation data and the target phase to obtain second target transformation data of the target transformation data and the target phase in a two-phase orthogonal rotating coordinate system; a first acquisition submodule, used to subtract the reference DC bus voltage and the initial DC bus voltage to obtain a first difference; a second acquisition submodule, used to input the first difference into the target controller to obtain a first control signal corresponding to the first difference; a determination submodule, used to determine the target DC bus voltage based on the target phase, the first control signal, the DC current component in the second target transformation data, the AC current component in the second target transformation data, and the reference AC current component corresponding to the AC current component.

[0106] Optionally, the determination submodule can also be used to subtract the AC current component from the reference AC current component to obtain a second difference; to input the second difference into the target controller to obtain a second control signal corresponding to the second difference; to subtract the first control data corresponding to the first control signal from the DC current component to obtain a third difference; to input the third difference into the target controller to obtain a third control signal corresponding to the third difference; and to determine the target DC bus voltage based on the second control signal, the third control signal and the target phase.

[0107] Optionally, the determination submodule can also be used to perform a second transformation process on the second control signal, the third control signal and the target phase to obtain a target pulse signal of the magnetically controlled transformer; and to determine the target DC bus voltage based on the target pulse signal.

[0108] Optionally, the second acquisition unit 404 may include: a fifth determination module, used to determine the target duty cycle after at least one switch tube in the excitation control system is turned on based on the target DC bus voltage within the target time period; an acquisition module, used to increase the saturation of the magnetic valve based on the target duty cycle to obtain target saturation information.

[0109] In this embodiment, target demand information of the magnetic valve in the magnetically controlled transformer is obtained by a first acquisition unit, wherein the target demand information is used to characterize the requirement for increasing the saturation of the magnetic valve; a target working state of the excitation control system in the magnetically controlled transformer is determined by a first determination unit based on the target demand information, wherein the target working state is used to enable the magnetically controlled transformer to operate normally; a target DC bus voltage of the magnetically controlled transformer is determined by a second determination unit based on initial saturation information and the target working state of the magnetic valve, wherein the initial saturation information is used to characterize the degree of magnetization of the magnetic valve in the initial working state; the saturation of the magnetic valve is increased by a second acquisition unit based on the target DC bus voltage to obtain the target saturation information of the magnetic valve, wherein the magnetic flux in the target saturation information is greater than the magnetic flux in the initial saturation information, so as to solve the technical problem that the magnetically controlled transformer cannot be effectively and quickly excited, and achieve the technical effect that the magnetically controlled transformer can be effectively and quickly excited.

[0110] According to an embodiment of the present invention, a computer-readable storage medium is also provided, which includes a stored program, wherein when the program is executed by a processor, the device where the readable storage medium is located is controlled to execute the excitation method of the magnetically controlled transformer in the embodiment.

[0111] According to an embodiment of the present invention, a processor is further provided. The processor is used to run a program, wherein the excitation method of the magnetically controlled transformer in the embodiment is executed when the program is run.

[0112] According to an embodiment of the present invention, a computer program product is further provided, including a computer program, and when the computer program is executed by a processor, the excitation method of the magnetically controlled transformer in the embodiment of the present invention is implemented.

[0113] According to an embodiment of the present invention, an electronic device is also provided, the electronic device comprising a processor and a memory for storing instructions executable by the processor, wherein the processor is configured to execute the instructions to implement the excitation method of the magnetically controlled transformer in the embodiment of the present invention.

[0114] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0115] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0116] In the several embodiments provided by the present invention, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic, for example, the division of units can be a logical function division, and there can be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0117] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed over multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0118] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0119] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc. Various media that can store program codes.

[0120] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for exciting a magnetically controlled transformer, characterized in that: include: Acquiring target demand information of a magnetic valve in a magnetically controlled transformer, wherein the target demand information is used to characterize a demand for increasing the saturation of the magnetic valve; Based on the target demand information, determining a target operating state of an excitation control system in the magnetically controlled transformer, wherein the target operating state is used to enable the magnetically controlled transformer to operate normally; Determining a target DC bus voltage of the magnetically controlled transformer based on initial saturation information of the magnetic valve and the target working state, wherein the initial saturation information is used to characterize the magnetization degree of the magnetic valve in the initial working state; Based on the target DC bus voltage, increasing the saturation of the magnetic valve to obtain target saturation information of the magnetic valve, wherein the magnetic flux in the target saturation information is greater than the magnetic flux in the initial saturation information; Wherein, based on the initial saturation information of the magnetic valve and the target working state, determining the target DC bus voltage of the magnetically controlled transformer comprises: determining the initial DC bus voltage, the initial AC bus voltage and the initial AC bus current in the excitation control system based on the initial saturation information and the target working state; based on the initial AC bus voltage, determining the target phase of the initial AC bus voltage by using a phase-locked loop in the excitation control system; Perform a first transformation process on the initial AC bus current to obtain first target transformation data of the initial AC bus current in a two-phase stationary coordinate system; perform a second transformation process on the first target transformation data and the target phase to obtain second target transformation data of the first target transformation data and the target phase in a two-phase orthogonal rotating coordinate system; subtract a reference DC bus voltage from the initial DC bus voltage to obtain a first difference; input the first difference into a target controller to obtain a first control signal corresponding to the first difference; determine the target DC bus voltage based on the target phase, the first control signal, the DC current component in the second target transformation data, the AC current component in the second target transformation data, and a reference AC current component corresponding to the AC current component.

2. The method according to claim 1, characterized in that Determining a target operating state of an excitation control system in the magnetically controlled transformer based on the target demand information includes: Based on the target demand information, it is determined that the target working state is a rectification state, wherein the rectification state is used to excite the magnetically controlled transformer.

3. The method according to claim 1, characterized in that Determining the target DC bus voltage based on the target phase, the first control signal, a DC current component in the second target transformation data, an AC current component in the second target transformation data, and a reference AC current component corresponding to the AC current component, includes: Subtracting the AC current component from the reference AC current component to obtain a second difference; Inputting the second difference into the target controller to obtain a second control signal corresponding to the second difference; Subtracting the first control data corresponding to the first control signal from the DC current component to obtain a third difference; Inputting the third difference into the target controller to obtain a third control signal corresponding to the third difference; The target DC bus voltage is determined based on the second control signal, the third control signal, and the target phase.

4. The method according to claim 3, characterized in that Determining the target DC bus voltage based on the second control signal, the third control signal and the target phase includes: performing the second transformation process on the second control signal, the third control signal and the target phase to obtain a target pulse signal of the magnetic control transformer; Based on the target pulse signal, the target DC bus voltage is determined.

5. The method according to claim 1, characterized in that Based on the target DC bus voltage, increasing the saturation of the magnetic valve to obtain target saturation information of the magnetic valve includes: Determining a target duty cycle of at least one switch in the excitation control system after it is turned on based on the target DC bus voltage within a target time period; Based on the target duty cycle, the saturation of the magnetic valve is increased to obtain the target saturation information.

6. An excitation device for a magnetically controlled transformer, characterized in that: include: A first acquisition unit is used to acquire target demand information of a magnetic valve in a magnetically controlled transformer, wherein the target demand information is used to characterize a demand for increasing a saturation of the magnetic valve; A first determining unit, configured to determine a target operating state of an excitation control system in the magnetically controlled transformer based on the target demand information, wherein the target operating state is used to enable the magnetically controlled transformer to operate normally; a second determining unit, configured to determine a target DC bus voltage of the magnetically controlled transformer based on initial saturation information of the magnetic valve and the target working state, wherein the initial saturation information is used to characterize a magnetization degree of the magnetic valve in an initial working state; a second acquisition unit, configured to increase the saturation of the magnetic valve based on the target DC bus voltage to obtain target saturation information of the magnetic valve, wherein the magnetic flux in the target saturation information is greater than the magnetic flux in the initial saturation information; The second determination unit is further used to process the following steps: determining an initial DC bus voltage, an initial AC bus voltage and an initial AC bus current in the excitation control system based on the initial saturation information and the target working state; determining a target phase of the initial AC bus voltage using a phase-locked loop in the excitation control system based on the initial AC bus voltage; Perform a first transformation process on the initial AC bus current to obtain first target transformation data of the initial AC bus current in a two-phase stationary coordinate system; perform a second transformation process on the first target transformation data and the target phase to obtain second target transformation data of the first target transformation data and the target phase in a two-phase orthogonal rotating coordinate system; subtract a reference DC bus voltage from the initial DC bus voltage to obtain a first difference; input the first difference into a target controller to obtain a first control signal corresponding to the first difference; determine the target DC bus voltage based on the target phase, the first control signal, the DC current component in the second target transformation data, the AC current component in the second target transformation data, and a reference AC current component corresponding to the AC current component.

7. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed by a processor, the device where the storage medium is located is controlled to execute the method according to any one of claims 1 to 5.

8. An electronic device, characterized in that: include: A memory storing an executable program; A processor, configured to run the program, wherein the program executes the method according to any one of claims 1 to 5 when running.

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