Flexible phase modulation and voltage regulation system and method based on voltage converter and electronic equipment
Through a flexible phase and phase regulation system based on the voltage converter, the voltage of the second transformer module is adjusted by the first transformer module, which solves the problem that the existing phase shift transformer cannot achieve continuous phase regulation and voltage regulation, and realizes continuous regulation of voltage and phase in the power line, which is suitable for applications that require fine adjustment.
Patent Information
- Application Number
- CN202510127932.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-27
- Publication Date
- 2025-04-25
AI Technical Summary
The existing phase shift transformers can only adjust the phase and voltage at a fixed step length, and cannot achieve continuous phase and voltage regulation. The symmetrical design is mainly used for phase regulation and does not have the function of adjusting voltage. Although the asymmetrical design can adjust the voltage, it cannot achieve continuous voltage regulation.
A flexible phase-regulating voltage regulation system based on a voltage converter is adopted, including a first transformer module and a second transformer module, and the voltage of the second transformer module is adjusted through the decomposition switch of the first transformer module and the voltage converter, thereby realizing continuous phase shift regulation and voltage amplitude regulation.
It realizes continuous adjustment of voltage and phase in power lines, has a simple circuit structure, saves space and reduces costs, and is suitable for applications that require fine adjustment.
Smart Images
Figure CN119891786A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of power electronics technology, and in particular to a flexible phase-modulation and voltage-regulation system, method and electronic equipment based on a voltage converter. Background Art
[0002] Current phase-shifting transformer technology mainly relies on two ways to achieve on-load voltage regulation: one is to use a mechanical on-load tap changer, and the other is to replace the mechanical switch with a thyristor. However, whether it is a mechanical or thyristor on-load tap changer, the phase-shifting transformer can only adjust the voltage according to a fixed step size, and cannot achieve smooth and continuous phase adjustment operation, which limits its applicability in applications that require fine adjustment. In addition, the phase-shifting transformer with a symmetrical design is mainly used for phase adjustment operation, and it does not have the function of adjusting voltage. This type of transformer is suitable for occasions where precise phase control is required, but it has limited performance in applications where voltage and phase need to be adjusted at the same time. Although the asymmetrical phase-shifting transformer can adjust the voltage to a certain extent, it still cannot achieve continuous voltage adjustment. This means that even when the voltage can be adjusted, the adjustment process is still step-by-step rather than smooth, which is not ideal for applications with high precision requirements.
[0003] Accordingly, the art needs a new flexible phase and voltage regulation solution to solve the above problems. Summary of the invention
[0004] In order to overcome the above defects, the present application is proposed to solve or at least partially solve the technical problem that the existing phase-shifting transformer can only perform phase and voltage regulation according to certain discrete steps and cannot achieve continuous phase and voltage regulation.
[0005] In a first aspect, a flexible phase-modulation and voltage-regulation system based on a voltage converter is provided, the system comprising: a first transformer module and a second transformer module, the input end of the first transformer module is connected to a power line, the output end is connected to the second transformer module, and the second transformer module is connected in series in the power line.
[0006] In a technical solution of the flexible phase-modulation and voltage-regulating system based on the voltage converter, the first transformer module includes an excitation transformer, a tap switch and a voltage converter; the first end of the primary winding of the excitation transformer is connected to the power line, the second end of the primary winding is grounded, and is star-connected; the secondary side of the excitation transformer includes a first output winding and a second output winding, the first output winding is connected to the first input end of the tap switch through a tap, and the two ends of the second output winding are respectively connected to the input end of the voltage converter; the output end of the tap switch is connected to the second transformer module; the first output end of the voltage converter is connected to the second input end of the tap switch, and the second output end is connected to the second transformer module.
[0007] In a technical solution of the above-mentioned flexible phase-modulation and voltage-regulating system based on a voltage converter, the voltage converter adopts a Buck-boost structure, and the voltage converter includes a first bidirectional switch, a second bidirectional switch and an inductor; the first end of the first bidirectional switch is connected to the first end of the second output winding on the secondary side of the excitation transformer, and the second end is connected to the first end of the inductor and the first end of the second bidirectional switch; the second end of the second bidirectional switch is connected to the second transformer module; the second end of the inductor is respectively connected to the second end of the second output winding on the secondary side of the excitation transformer and the second transformer module.
[0008] In a technical solution of the above-mentioned flexible phase-modulation and voltage-regulating system based on voltage converter, the first end of the primary side winding of the second transformer module is connected to the output end of the tap switch, and the second end of the primary side winding is connected to the second output end of the voltage converter; the secondary side winding of the second transformer module is connected in series in the power line.
[0009] In a technical solution of the flexible phase-modulation and voltage-regulation system based on the voltage converter, the number of the excitation transformer, the tap switch, the voltage converter and the second transformer module is at least three.
[0010] In a technical solution of the flexible phase-modulation and voltage-regulating system based on the voltage converter, the tap changer is an on-load tap changer, and the tap changer includes a power electronic tap changer, a mechanical tap changer or a composite tap changer.
[0011] In a second aspect, a flexible phase-modulation and voltage-regulation method is provided, and the method is performed based on a flexible phase-modulation and voltage-regulation system based on a voltage converter as described in any one of the technical solutions of the above-mentioned flexible phase-modulation and voltage-regulation system based on a voltage converter, and the method includes: obtaining a voltage regulation requirement, and the voltage regulation requirement includes a phase-modulation requirement or a voltage regulation requirement; based on the voltage regulation requirement, controlling the first transformer module to perform a voltage regulation operation to change the voltage of the second transformer module.
[0012] In a technical solution of the above-mentioned flexible phase-adjustment and voltage-regulation method, based on the voltage regulation requirement, controlling the first transformer module to perform a voltage regulation operation includes: when the voltage regulation requirement is a phase-adjustment requirement, judging whether the phase-adjustment requirement is less than a preset adjustment range of the voltage converter, and if so, using the voltage converter to perform a phase-adjustment operation based on the phase-adjustment requirement; if not, judging whether the phase-adjustment requirement is equal to a preset adjustment gear of the tap changer; if so, using the tap changer to perform a phase-adjustment operation based on the phase-adjustment requirement; if not, using the voltage converter and the tap changer to perform a phase-adjustment operation based on the phase-adjustment requirement.
[0013] In a technical solution of the above-mentioned flexible phase-modulation and voltage-regulation method, based on the voltage regulation requirement, controlling the first transformer module to perform a voltage regulation operation includes: when the voltage regulation requirement is a voltage regulation requirement, determining whether the voltage regulation requirement is less than a preset regulation range of the voltage converter; if so, using the voltage converter to perform a voltage regulation operation based on the voltage regulation requirement; if not, using the voltage converter and the tap switch to perform a voltage regulation operation based on the voltage regulation requirement.
[0014] In a third aspect, an electronic device is provided, comprising at least one processor; and a memory communicatively connected to the at least one processor; wherein a computer program is stored in the memory, and when the computer program is executed by the at least one processor, the method described in any one of the technical solutions of the above-mentioned flexible phase modulation and voltage regulation method is implemented.
[0015] The above one or more technical solutions of the present application have at least one or more of the following beneficial effects:
[0016] The present application provides a flexible phase-adjusting and voltage-adjusting system based on a voltage converter, comprising: a first transformer module and a second transformer module, wherein the input end of the first transformer module is connected to a power line, and the output end is connected to the second transformer module, and the second transformer module is connected in series in the power line. The present application adjusts the voltage of the second transformer module connected in series in the power line through the first transformer module, so as to realize continuous phase shift adjustment and voltage amplitude adjustment, and the circuit structure is simple, space saving and cost reduction. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The disclosure of the present application will become easier to understand with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. Among them:
[0018] Figure 1is a main structural schematic diagram of a flexible phase-modulation and voltage-regulation system based on a voltage converter according to an embodiment of the present application;
[0019] Figure 2 is a main structural schematic diagram of a voltage converter according to an embodiment of the present application;
[0020] Figure 3 is a schematic diagram of the control principle of a voltage converter according to an embodiment of the present application;
[0021] Figure 4 is a schematic diagram of the main structure of a power electronic tap changer according to an embodiment of the present application;
[0022] Figure 5 is a main structural schematic diagram of a mechanical tap changer according to an embodiment of the present application;
[0023] Figure 6 is a main structural schematic diagram of a composite tap changer according to an embodiment of the present application;
[0024] Figure 7 It is a schematic flow chart of main steps of a flexible phase and voltage regulation method according to an embodiment of the present application;
[0025] Figure 8 It is a detailed step flow chart of a flexible phase and voltage regulation method according to an embodiment of the present application;
[0026] Fig. 9 is a single-phase vector diagram of a preset adjustment range of a tap changer and a voltage converter according to an embodiment of the present application;
[0027] Fig.10 It is a schematic diagram of the main structure of an electronic device according to an embodiment of the present application.
[0028] Reference numerals:
[0029] 10: first transformer module; 11: tap changer; 12: voltage converter; 13: excitation transformer; 20: second transformer module; 30: memory; 40: processor. DETAILED DESCRIPTION
[0030] Some embodiments of the present application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the protection scope of the present application.
[0031] In the description of the present application, "module" and "processor" may include hardware, software or a combination of the two. A module may include hardware circuits, various suitable sensors, communication ports, memory, and may also include software parts, such as program code, or a combination of software and hardware. The processor may be a central processing unit, a microprocessor, an image processor, a digital signal processor or any other suitable processor. The processor has data and / or signal processing functions. The processor may be implemented in software, hardware or a combination of the two. Computer-readable storage media include any suitable medium that can store program code, such as a disk, a hard disk, an optical disk, a flash memory, a read-only memory, a random access memory, etc. The term "A and / or B" means all possible combinations of A and B, such as only A, only B or A and B. The term "at least one A or B" or "at least one of A and B" has a similar meaning to "A and / or B" and may include only A, only B or A and B. The singular terms "one" and "the" may also include plural forms.
[0032] Here we first explain some terms involved in this application.
[0033] Buck-boost: Buck-Boost circuit is a commonly used conversion circuit. Its characteristics are that the output voltage can be higher or lower than the input voltage, and the polarity of the output voltage is opposite to the input voltage.
[0034] The existing phase-shifting transformer technology, whether it is a mechanical or thyristor on-load tap changer, can only adjust the voltage according to a fixed step size, and cannot achieve smooth and continuous phase adjustment operation. In addition, the symmetrically designed phase-shifting transformer is mainly used for phase adjustment and does not have the function of adjusting voltage; while the asymmetrically designed phase-shifting transformer can adjust the voltage to a certain extent, but it cannot achieve continuous voltage adjustment.
[0035] To this end, the present application provides a flexible phase-adjusting and voltage-regulating system based on a voltage converter, comprising: a first transformer module and a second transformer module, wherein the input end of the first transformer module is connected to a power line, and the output end is connected to the second transformer module, and the second transformer module is connected in series in the power line. The present application utilizes the decomposition switch and the voltage converter of the first transformer module to adjust the voltage of the second transformer module connected in series in the power line, which can realize continuous phase shift adjustment and voltage amplitude adjustment, and the circuit structure is simple, which can effectively save space and reduce costs.
[0036] See attached Figure 1 , Figure 1 is a main structural diagram of a flexible phase-modulation and voltage-regulation system based on a voltage converter according to an embodiment of the present application; Figure 1As shown, in this embodiment, a flexible phase-modulation and voltage-regulation system based on a voltage converter includes: a first transformer module and a second transformer module, wherein the input end of the first transformer module is connected to a power line, and the output end is connected to the second transformer module, and the second transformer module is connected in series in the power line.
[0037] Specifically, the flexible phase-adjusting and voltage-regulating system based on the voltage converter includes a first transformer module and a second transformer module. Through the coordinated work of the two modules, the voltage and phase in the power line can be flexibly adjusted. The input end of the first transformer module is connected to the power line for accessing the voltage and current of the power line. The second transformer module is connected in series in the power line and is connected to the output end of the first transformer module. The first transformer module adjusts the voltage passing through the second transformer module and feeds it back to the power line.
[0038] This application realizes flexible adjustment of the voltage in the power line through the coordinated work of two transformer modules, which can optimize the operating efficiency of the power system, improve the power quality, reduce power loss, and contribute to the stable operation of the power system.
[0039] In one embodiment, the first transformer module includes an excitation transformer, a tap switch and a voltage converter; the first end of the primary winding of the excitation transformer is connected to the power line, the second end of the primary winding is grounded, and is star-connected; the secondary side of the excitation transformer includes a first output winding and a second output winding, the first output winding is connected to the first input end of the tap switch through a tap, and the two ends of the second output winding are respectively connected to the input end of the voltage converter; the output end of the tap switch is connected to the second transformer module; the first output end of the voltage converter is connected to the second input end of the tap switch, and the second output end is connected to the second transformer module.
[0040] Specifically, the first transformer module includes an excitation transformer, a tap switch and a voltage converter. The primary winding of the excitation transformer is used to access the electric energy of the power line and transform it to the secondary side of the excitation transformer to supply power to the tap switch and the voltage converter connected to the secondary side.
[0041] The first end of the primary winding of the excitation transformer is connected to the power line, and the second end is grounded, and a star connection is adopted. The star connection is also called a Y connection, which means that the three-phase windings are connected together to form a star-like structure.
[0042] The secondary side of the excitation transformer includes a first output winding and a second output winding. The first output winding is composed of a segmented winding, including four taps, which are respectively connected to the four first input ends corresponding to the tap switch. The output end of the tap switch is connected to the second transformer module. The tap switch is composed of a pair of reverse parallel thyristors. Through the opening and closing of the thyristors, different segmented windings are selectively connected or cut off, thereby changing the voltage of the secondary side winding of the second transformer module to achieve discrete voltage regulation. The two ends of the second output winding are respectively connected to the input ends of the voltage converter.
[0043] See attached Figure 2 , Figure 2 FIG. 1 is a schematic diagram of the main structure of a voltage converter according to an embodiment of the present application. Figure 2 As shown, in one embodiment, the voltage converter adopts a Buck-boost structure, and the voltage converter includes a first bidirectional switch, a second bidirectional switch and an inductor; the first end of the first bidirectional switch is connected to the first end of the second output winding on the secondary side of the excitation transformer, and the second end is connected to the first end of the inductor and the first end of the second bidirectional switch; the second end of the second bidirectional switch is connected to the second transformer module; the second end of the inductor is respectively connected to the second end of the second output winding on the secondary side of the excitation transformer and the second transformer module.
[0044] Specifically, the voltage converter is used to cooperate with the tap switch to perform continuous phase adjustment and voltage regulation operations. The voltage converter adopts a Buck-boost circuit, including a first bidirectional switch, a second bidirectional switch and an inductor. The first end of the first bidirectional switch (S1) is connected to the first end of the second output winding on the secondary side of the excitation transformer, and the second end is connected to the first end of the inductor (L) and the first end of the second bidirectional switch (S2).
[0045] The first end of the second bidirectional switch (S2) is connected to the second end of the first bidirectional switch (S1) and the first end of the inductor (L), and the second end is connected to the second transformer module. The first end of the inductor (L) is connected to the common connection point of the first and second bidirectional switches, and the second end is respectively connected to the second end of the second output winding on the secondary side of the excitation transformer and the second transformer module.
[0046] See attached Figure 3 , Figure 3 FIG. 1 is a schematic diagram of the control principle of a voltage converter according to an embodiment of the present application. Figure 3 As shown, the actual output voltage of the voltage converter is V out With reference voltage V out_ref By comparison, the error signal ΔV is obtained out , error signal ΔV outThe single closed-loop error controller is used to adjust and generate a control signal. The control signal passes through the drive circuit to generate a PWM (pulse width modulation) signal. The PWM signal is used to control the switching elements in the voltage converter to adjust the output voltage. The PWM signal controls the switching elements in the voltage converter to make the output voltage close to the reference voltage V out_ref . Output voltage V out It is fed back to the single closed-loop error controller again to form a closed-loop control system to ensure that the output voltage is stable near the set value.
[0047] In one embodiment, the first end of the primary winding of the second transformer module is connected to the output end of the tap switch, and the second end of the primary winding is connected to the second output end of the voltage converter; the secondary winding of the second transformer module is connected in series in the power line.
[0048] Specifically, the second transformer module is a series transformer, a first end of the primary winding of the second transformer module is connected to the output end of the tap switch, a second end is connected to the second output end of the voltage converter, and a secondary winding is connected in series in the power line.
[0049] In one embodiment, the number of the excitation transformer, the tap switch, the voltage converter and the second transformer module is at least three.
[0050] Specifically, the number of the excitation transformer, the tap switch, the voltage converter and the second transformer module is at least three. The three excitation transformers correspond to the A phase, the B phase and the C phase of the power line respectively, the first end of the primary winding of each excitation transformer is connected to one phase of the power line, and one excitation transformer is correspondingly arranged with one tap switch and one voltage converter.
[0051] The three second transformer modules correspond to phase A, phase B and phase C of the power line respectively, and the secondary winding of each second transformer module is connected in series to one phase of the power line.
[0052] In one embodiment, the tap changer is an on-load tap changer, and the tap changer includes a power electronic tap changer, a mechanical tap changer, or a combined tap changer.
[0053] Specifically, the tap changer adopts an on-load tap changer, which can be a power electronic tap changer, a mechanical tap changer or a composite tap changer. The structure of the power electronic tap changer is as follows: Figure 4 As shown in Figure 1, the structure of the mechanical tap changer is as follows: Figure 5 As shown, the structure of the composite tap changer is as follows Figure 6 shown.
[0054] See attached Figure 7 , Figure 7 1 is a flow chart of the main steps of the flexible phase and voltage regulation method according to an embodiment of the present application; Figure 7 As shown, in this embodiment, a flexible phase modulation and voltage regulation method is performed based on the flexible phase modulation and voltage regulation system based on a voltage converter described in any embodiment of the flexible phase modulation and voltage regulation system based on a voltage converter, and the method includes the following steps:
[0055] Step S101: obtaining a voltage regulation requirement, wherein the voltage regulation requirement includes a phase regulation requirement or a voltage regulation requirement;
[0056] In this embodiment, the voltage regulation requirement is a specific requirement put forward by the user according to the actual needs of the power system operation, or a requirement for adjustment due to voltage fluctuations caused by various factors (such as load changes, grid fluctuations, equipment aging, etc.) in the power system, specifically including phase adjustment requirements or voltage regulation requirements.
[0057] Step S102: Based on the voltage regulation requirement, controlling the first transformer module to perform a voltage regulation operation to change the voltage of the second transformer module.
[0058] In this embodiment, based on the voltage regulation requirement, the voltage converter and the tap switch are controlled to perform continuous phase adjustment and voltage regulation operations, so as to achieve accurate regulation of the voltage of the second transformer module.
[0059] See attached Figure 8 , Figure 8 FIG. 1 is a schematic diagram of a detailed step flow of a flexible phase and voltage regulation method according to an embodiment of the present application; Figure 8 As shown, in one embodiment, based on the voltage regulation requirement, controlling the first transformer module to perform a voltage regulation operation includes: when the voltage regulation requirement is a phase adjustment requirement, determining whether the phase adjustment requirement is less than a preset adjustment range of the voltage converter, and if so, using the voltage converter to perform a phase adjustment operation based on the phase adjustment requirement; if not, determining whether the phase adjustment requirement is equal to a preset adjustment gear of the tap switch; if so, using the tap switch to perform a phase adjustment operation based on the phase adjustment requirement; if not, using the voltage converter and the tap switch to perform a phase adjustment operation based on the phase adjustment requirement.
[0060] Specifically, first obtain the voltage regulation demand, determine whether the voltage regulation demand is a voltage regulation demand, if not, the voltage regulation demand is a phase adjustment demand, and in the case where the voltage regulation demand is a phase adjustment demand, determine whether the phase adjustment demand is less than the preset adjustment range that the voltage converter can achieve, and if the phase adjustment demand is within the preset adjustment range of the voltage converter, then the voltage converter can be directly controlled to perform phase adjustment. The voltage converter has a faster response speed and higher adjustment accuracy, and is suitable for precise adjustment in a small range.
[0061] If the phase adjustment requirement exceeds the preset adjustment range of the voltage converter, it is determined whether the phase adjustment requirement matches a preset adjustment gear of the tap changer. If so, the tap changer is controlled to adjust the phase. The tap changer has multiple adjustment gears, but the response speed may be slow, which is suitable for a wide range of adjustment.
[0062] If the phase adjustment requirement exceeds the preset adjustment range of the voltage converter and does not match the preset adjustment position of the tap changer, it is necessary to control the voltage converter and the tap changer to cooperate for precise phase adjustment. In this case, the tap changer can be used for large-scale phase adjustment and the voltage converter can be used for small-scale fine adjustment to achieve precise phase control.
[0063] In one embodiment, based on the voltage regulation requirement, controlling the first transformer module to perform a voltage regulation operation includes: when the voltage regulation requirement is a voltage regulation requirement, determining whether the voltage regulation requirement is less than a preset regulation range of the voltage converter, and if so, using the voltage converter to perform a voltage regulation operation based on the voltage regulation requirement; if not, using the voltage converter and the tap switch to perform a voltage regulation operation based on the voltage regulation requirement.
[0064] Specifically, if the voltage regulation requirement is a voltage regulation requirement, it is determined whether the voltage regulation requirement is less than the preset regulation range of the voltage converter. If the voltage regulation requirement is within the preset regulation range of the voltage converter, the voltage converter can be directly controlled to perform the voltage regulation operation. If the voltage regulation requirement exceeds the preset regulation range of the voltage converter, the voltage converter and the tap switch are controlled to cooperate to perform the voltage regulation operation.
[0065] In one embodiment, it is assumed that the tap changer can only adjust the voltage / phase by 5% in each gear, which means that its adjustment is discrete and can only be adjusted according to the preset gear. The voltage converter can adjust any value from 0 to 5%. When the two are combined, continuous adjustment such as 5% + 2% = 7% can be achieved, thereby meeting a wider range of phase adjustment and voltage regulation needs.
[0066] In summary, the present application can achieve rapid response and precise processing of voltage regulation requirements. When processing phase adjustment requirements and voltage regulation requirements, the voltage converter and tap changer are reasonably selected for adjustment according to the size and range of the phase adjustment requirements and voltage regulation requirements to ensure the stable operation of the power system and the quality of power consumption.
[0067] See attached Fig. 9 , Fig. 9 : is a single-phase vector diagram of a preset adjustment range of a tap switch and a voltage converter according to an embodiment of the present application; a vector diagram of an adjustment range that can be achieved by the tap switch and the voltage converter is shown in FIG. Fig. 9As shown, ΔU comp is the output voltage of the second transformer module, USA and ULA are the line head voltage and end voltage of phase A circuit respectively, 0, 1, 2, 3 represent the three gears of the tap switch. When only the tap switch is in action, fixed phase adjustment of gears 0 to 3 can be achieved. After adding the voltage converter, the tap switch and the voltage converter are coordinated to achieve continuous phase adjustment and voltage regulation functions, such as Fig. 9 Continuous straight line segments in .
[0068] It should be pointed out that although the various steps in the above embodiments are described in a specific order, those skilled in the art can understand that in order to achieve the effect of the present application, different steps do not have to be executed in such an order. They can be executed simultaneously (in parallel) or in other orders. These adjusted schemes are equivalent to the technical schemes described in this application, and therefore will also fall within the scope of protection of this application.
[0069] It is understood by those skilled in the art that all or part of the processes in the method for implementing the above-mentioned embodiment of the present application can also be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable storage medium may include: any entity or device, medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory, random access memory, electrical carrier signal, telecommunication signal and software distribution medium, etc. that can carry the computer program code.
[0070] Another aspect of the present application provides an electronic device.
[0071] In an embodiment of an electronic device according to the present application, the electronic device may include at least one processor; and a memory connected to the at least one processor in communication; wherein a computer program is stored in the memory, and when the computer program is executed by the at least one processor, the method described in any of the above embodiments is implemented. Fig.10 , Fig.10 FIG. 4 exemplarily shows that the memory 11 and the processor 12 are communicatively connected via a bus.
[0072] Another aspect of the present application also provides a computer-readable storage medium.
[0073] In an embodiment of a computer-readable storage medium according to the present application, the computer-readable storage medium may be configured to store a program for executing the flexible phase-modulation and voltage-modulation method of the above-mentioned method embodiment, and the program may be loaded and run by a processor to implement the above-mentioned flexible phase-modulation and voltage-modulation method. For ease of explanation, only the parts related to the embodiment of the present application are shown. For specific technical details not disclosed, please refer to the method part of the embodiment of the present application. The computer-readable storage medium may be a storage device formed by various electronic devices. Optionally, the computer-readable storage medium in the embodiment of the present application is a non-temporary computer-readable storage medium.
[0074] So far, the technical solution of the present application has been described in conjunction with an embodiment shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.
Claims
1. A flexible phase-modulation and voltage-regulation system based on a voltage converter, characterized in that: The system comprises: a first transformer module and a second transformer module, wherein the input end of the first transformer module is connected to a power line, the output end is connected to the second transformer module, and the second transformer module is connected in series in the power line.
2. The flexible phase-modulation and voltage-regulating system based on voltage converter according to claim 1, characterized in that: The first transformer module includes an excitation transformer, a tap switch and a voltage converter; The first end of the primary winding of the excitation transformer is connected to the power line, and the second end of the primary winding is grounded, and is in star connection; The secondary side of the excitation transformer includes a first output winding and a second output winding, the first output winding is connected to the first input end of the tap switch through a tap, and both ends of the second output winding are respectively connected to the input end of the voltage converter; The output end of the tap switch is connected to the second transformer module; The first output end of the voltage converter is connected to the second input end of the tap switch, and the second output end is connected to the second transformer module.
3. The flexible phase-modulation and voltage-regulating system based on voltage converter according to claim 2, characterized in that: The voltage converter adopts a Buck-boost structure, and the voltage converter includes a first bidirectional switch, a second bidirectional switch and an inductor; The first end of the first bidirectional switch is connected to the first end of the second output winding on the secondary side of the excitation transformer, and the second end is connected to the first end of the inductor and the first end of the second bidirectional switch; The second end of the second bidirectional switch is connected to the second transformer module; The second end of the inductor is connected to the second end of the second output winding on the secondary side of the excitation transformer and the second transformer module respectively.
4. The flexible phase-modulation and voltage-regulating system based on voltage converter according to claim 2, characterized in that: A first end of the primary winding of the second transformer module is connected to the output end of the tap switch, and a second end of the primary winding is connected to the second output end of the voltage converter; The secondary winding of the second transformer module is connected in series in the power line.
5. The flexible phase-modulation and voltage-regulating system based on voltage converter according to claim 4 is characterized in that: The number of the excitation transformer, the tap switch, the voltage converter and the second transformer module is at least three.
6. The flexible phase-modulation and voltage-regulating system based on voltage converter according to claim 2, characterized in that: The tap changer is an on-load tap changer, and the tap changer includes a power electronic tap changer, a mechanical tap changer or a composite tap changer.
7. A flexible phase modulation and voltage regulation method, the method is performed based on the flexible phase modulation and voltage regulation system based on a voltage converter according to any one of claims 1 to 6, characterized in that: The method comprises: Acquiring a voltage regulation requirement, where the voltage regulation requirement includes a phase regulation requirement or a voltage regulation requirement; Based on the voltage regulation requirement, the first transformer module is controlled to perform a voltage regulation operation to change the voltage of the second transformer module.
8. The flexible phase and voltage regulation method according to claim 7, characterized in that: The controlling the first transformer module to perform a voltage regulation operation based on the voltage regulation requirement includes: In the case where the voltage regulation requirement is a phase adjustment requirement, determining whether the phase adjustment requirement is less than a preset adjustment range of the voltage converter, and if so, using the voltage converter to perform a phase adjustment operation based on the phase adjustment requirement; if not, determining whether the phase adjustment requirement is equal to a preset adjustment gear of the tap changer; If yes, use the tap changer to perform a phase adjustment operation based on the phase adjustment requirement; If not, a phase adjustment operation is performed based on the phase adjustment requirement using the voltage converter and the tap switch.
9. The flexible phase and voltage regulation method according to claim 8, characterized in that: The controlling the first transformer module to perform a voltage regulation operation based on the voltage regulation requirement includes: In the case where the voltage regulation requirement is a voltage regulation requirement, determining whether the voltage regulation requirement is less than a preset regulation range of the voltage converter, and if so, using the voltage converter to perform a voltage regulation operation based on the voltage regulation requirement; If not, a voltage regulation operation is performed based on the voltage regulation requirement using the voltage converter and the tap switch.
10. An electronic device comprising at least one processor and at least one memory, wherein the memory is suitable for storing a plurality of program codes, wherein: The program code is suitable for being loaded and run by the processor to execute the flexible phase and voltage regulation method according to any one of claims 7 to 9.