Thyristor valve block energy supply system, method and device, storage medium and product

Abstract

The invention discloses a thyristor valve block energy supply system, method and device, a storage medium and a product. The thyristor valve block energy supply system is used for providing energy for driving units connected with thyristor control ends in thyristor valve block basic units. Comprising at least two energy-taking power supplies and is configured to provide energy for the driving unit by adopting different energy-taking modes, and the energy-taking modes of the energy-taking power supplies have a redundancy switching function; the thyristor valve block energy supply method is used for providing energy for driving units connected with thyristor control ends in all thyristor valve block basic units. At least two different energy taking modes are adopted to provide energy for the driving unit, and the energy taking modes have a redundancy switching function. According to the technical scheme, a redundant power supply scheme combining self energy taking and external energy taking is adopted, equipment faults caused by faults of a single power supply are prevented, and reliable operation of the thyristor valve group is effectively guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent primary equipment of power system, and specifically relates to a thyristor valve group energy supply system, method, equipment, storage medium and product. Background Art

[0002] With the development of power system automation and DC transmission technology, valve group equipment based on power electronic devices has received more and more attention. In addition to UHV DC converter valves, thyristor valve groups have also emerged in an endless stream of derivative applications in the areas of DC interruption, energy consumption, and current limiting.

[0003] At present, in the field of traditional DC power transmission, thyristor valve groups generally adopt self-energy supply, using the voltage fluctuation at both ends of the thyristor device to obtain energy to ensure the control and drive board of each level of thyristor devices work. In the new application directions of thyristor valve groups such as DC breaking, energy consumption, and current limiting, higher requirements are put forward for the energy supply system of thyristor valve groups, which need to have a variety of energy supply methods to get rid of the dependence on the self-energy supply method of the main circuit. Summary of the invention

[0004] The purpose of the present invention is to provide a thyristor valve group energy supply system, method, equipment, storage medium and product, which can solve the problems in the prior art, such as the lack of a single energy supply method in the thyristor valve group energy supply system, heavy dependence on the main circuit voltage, and no redundant power supply.

[0005] In order to achieve the above object, the solution of the present invention is:

[0006] A thyristor valve group energy supply system, the thyristor valve group includes a thyristor valve group basic unit or at least two thyristor valve group basic units, the at least two thyristor valve group basic units are connected in series, in parallel or in series and in parallel; the energy supply system is used to provide energy to a drive unit connected to a thyristor control terminal in each thyristor valve group basic unit; it includes:

[0007] At least two energy-taking power sources are configured to provide energy to the drive unit in different energy-taking modes, and the energy-taking modes of the energy-taking power sources have a redundant switching function.

[0008] The energy supply system further comprises an independent energy supply magnetic ring, wherein the independent energy supply magnetic ring obtains energy from an external power source;

[0009] The energy source adopts a first energy source and a second energy source, wherein the first energy source is connected to two ends of the thyristor; and the second energy source is connected to the independent energy supply magnetic ring.

[0010] The above-mentioned independent energy supply magnetic ring adopts a current-type energy-taking CT, and the external power supply adopts an external current source or an energy supply circuit formed by connecting a high-voltage isolation transformer and a current generator.

[0011] A thyristor valve group energy supply method, the thyristor valve group comprises a thyristor valve group basic unit or at least two thyristor valve group basic units, the at least two thyristor valve group basic units adopt a series, parallel or series-parallel connection structure; the energy supply method is used to provide energy to a drive unit connected to a thyristor control end in each thyristor valve group basic unit; at least two different energy acquisition methods are used to provide energy to the drive unit, and each of the energy acquisition methods has a redundant switching function.

[0012] There are two energy acquisition methods for providing energy to the driving unit, including obtaining energy from voltage fluctuations at both ends of the thyristor and obtaining energy from an independent energy supply unit.

[0013] The above-mentioned independent energy supply unit obtains energy from an external power supply; the external power supply adopts an external current source or an energy supply circuit formed by connecting a high-voltage isolation transformer and a current generator.

[0014] A thyristor valve group energy supply device comprises a memory, a processor, and a computer program stored in the memory and executable on the processor; when the processor executes the computer program, the steps of the thyristor valve group energy supply method described above are implemented.

[0015] A computer-readable storage medium stores a computer program; when the computer program is executed by a processor, the steps of the thyristor valve group energy supply method as described above are implemented.

[0016] A computer program product is provided. When the computer program product is executed by a processor, the steps of the thyristor valve group energy supply method as described above are implemented.

[0017] After adopting the above scheme, the present invention designs the thyristor control board card with a redundant power supply scheme, which can provide redundant power supply for the thyristor control board card. When one of the power supply modes is abnormal, it can switch to another power supply mode in time, effectively ensuring the reliable operation of the thyristor valve group.

[0018] The technical solution provided by the present invention has the following beneficial effects:

[0019] (1) The present invention provides a thyristor valve group, which adopts a redundant power supply solution combining self-power supply and external power supply to prevent equipment failure caused by single power supply failure, thereby improving the reliability of valve group power supply and equipment operation.

[0020] (2) The thyristor valve group provided by the present invention has gotten rid of the dependence of the self-powered mode on the main circuit voltage and can still work normally when the main circuit is not powered. It is suitable for certain applications that require the thyristor valve group to operate independently. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a circuit structure diagram of a specific example of a thyristor valve group in an embodiment of the present invention;

[0022] Figure 2 is a circuit structure diagram of another specific example of a thyristor valve group in an embodiment of the present invention;

[0023] Figure 3 4 is a circuit structure diagram of another specific example of the thyristor valve group in the embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention provides a thyristor valve group energy supply system, wherein the thyristor valve group comprises a thyristor valve group basic unit or at least two thyristor valve group basic units, wherein the at least two thyristor valve group basic units adopt a series, parallel or series-parallel connection structure; the energy supply system is used to provide energy to a drive unit connected to a thyristor control end in each thyristor valve group basic unit, and comprises at least two energy supply sources, which are configured to provide energy to the drive unit in different energy supply modes, and each energy supply source has a redundant switching function between the energy supply modes.

[0025] Among them, the energy supply system also includes an independent energy supply magnetic ring, which obtains energy from an external power supply; the energy power supply adopts a first energy power supply and a second energy power supply, wherein the first energy power supply is connected to both ends of the thyristor; the second energy power supply is connected to the independent energy supply magnetic ring.

[0026] Among them, the independent energy supply magnetic ring adopts a current-type energy-taking CT, and the external power supply adopts an external current source; the external power supply can also adopt an energy supply circuit formed by connecting a high-voltage isolation transformer and a current generator, which takes energy from a low potential and provides a power supply current source to the high-potential independent energy supply magnetic ring.

[0027] The present invention also provides a thyristor valve group energy supply method, wherein the thyristor valve group includes a thyristor valve group basic unit or at least two thyristor valve group basic units, and the at least two thyristor valve group basic units adopt a series, parallel or series-parallel connection structure; the energy supply method is used to provide energy to a drive unit connected to the thyristor control end of each thyristor valve group basic unit, and at least two different energy extraction methods are used to provide energy to the drive unit, and each of the energy extraction methods has a redundant switching function.

[0028] There are two energy acquisition methods for providing energy to the driving unit, including obtaining energy from voltage fluctuations at both ends of the thyristor and obtaining energy from an independent energy supply unit.

[0029] Wherein, the independent energy supply unit obtains energy from an external power supply; the external power supply adopts an external current source or an energy supply circuit formed by connecting a high-voltage isolation transformer and a current generator.

[0030] Example embodiments will be described more fully below with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as being limited to the embodiments set forth herein. These embodiments are provided to make this application more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0031] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0032] It should be understood that although the terms first, second, etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another component. Therefore, the first component discussed below can be referred to as the second component without departing from the teachings of the concepts of the present application. As used herein, the term "and / or" includes any one of the associated listed items and all combinations of one or more.

[0033] Those skilled in the art will appreciate that the drawings are only schematic diagrams of example embodiments and may not be to scale. The modules or processes in the drawings are not necessarily required to implement the present application and therefore cannot be used to limit the scope of protection of the present application.

[0034] Figure 1It is a circuit structure diagram of a specific example of a thyristor valve group in an embodiment of the present invention, including a thyristor 100, a control board 200 and an independent energy supply magnetic ring 300; the control board 200 is composed of a drive unit 210, an energy supply 1 220 and an energy supply 2 230; the drive unit 210 is connected to the control end of the thyristor 100 to trigger the thyristor 100 to turn on; the energy supply 1 220 is connected to both ends of the thyristor 100 to provide energy to the drive unit 210; the energy supply 2 230 is connected to the independent energy supply magnetic ring 300, and the independent energy supply magnetic ring 300 provides energy to the drive unit 210 after taking energy through the through-core cable current. There are two energy taking methods in the thyristor valve group energy supply system, which supplies power to the control board and the drive unit, the energy taking power supply 1 takes energy according to the voltage fluctuation at both ends of the thyristor, and the energy taking power supply 2 takes energy from the independent energy supply magnetic ring 300. The thyristor valve group energy supply system has redundant switching functions between different energy acquisition modes. The control board can monitor the real-time status of each energy acquisition mode and quickly switch to another energy acquisition mode when one of the energy acquisition modes fails.

[0035] Figure 2 It is a circuit structure diagram of a specific example of a thyristor valve group in an embodiment of the present invention, which is composed of at least one thyristor valve group unit connected in series and parallel; each thyristor valve group unit includes a thyristor 100, a control board 200 and an independent energy supply magnetic ring 300; the control board 200 is composed of a drive unit 210, an energy supply 1 220 and an energy supply 2 230; the energy supply 1 220 is connected to both ends of the thyristor 100 to provide energy to the drive unit 210; the energy supply 2 230 is connected to the independent energy supply magnetic ring 300, and the independent energy supply magnetic ring 300 provides energy to the drive unit 210 after taking energy through the current of the through-core cable. The through-core cable is connected to the external power supply 20. In this embodiment, an independent current source is used, which can continuously and stably provide a stable current source to the independent energy supply magnetic ring 300, without considering whether there is a voltage at both ends of the thyristor. There are two energy-taking modes in the thyristor valve group energy supply system to supply power to the control board and the drive unit. Energy-taking power supply 1 takes energy based on the voltage fluctuation at both ends of the thyristor, and energy-taking power supply 2 takes energy from an independent energy supply magnetic ring. The different energy-taking modes of the thyristor valve group energy supply system have redundant switching functions. The control board can monitor the status of each energy-taking mode in real time, and quickly switch to another energy-taking mode when one of the energy-taking modes fails.

[0036] Figure 3It is a circuit structure diagram of another specific example of the thyristor valve group in the embodiment of the present invention, which is composed of at least one thyristor valve group unit connected in series; each thyristor valve group unit includes a thyristor 100, a control board 200 and an independent energy supply magnetic ring 300; the control board 200 is composed of a drive unit 210, an energy supply 1 220 and an energy supply 2 230; the energy supply 1 220 is connected to both ends of the thyristor 100 to provide energy to the drive unit 210; the energy supply 2 230 is connected to the independent energy supply magnetic ring 300, and the independent energy supply magnetic ring 300 provides energy to the drive unit 210 after taking energy through the through-core cable current. The independent energy supply magnetic ring 300 obtains energy from the external power supply 20. In this embodiment, the independent energy supply magnetic ring 300 obtains energy from the energy supply circuit composed of a high-voltage isolation transformer and a current generator, and transmits it to the energy supply 2. The high-voltage isolation transformer is connected to an external AC power supply to isolate the high-potential insulation of the thyristor valve group to the ground. The current generator generates an AC current with a fixed amplitude and frequency, and isolates the inter-stage insulation between different thyristor valve group units through a through-core cable. There are two energy-taking methods in the thyristor valve group energy supply system to supply power to the control board and the drive unit. Energy-taking power supply 1 takes energy according to the voltage fluctuation at both ends of the thyristor, and energy-taking power supply 2 takes energy independently from the independent energy supply magnetic ring, high-voltage isolation transformer, and current generator. The different energy-taking methods of the thyristor valve group energy supply system have redundant switching functions. The control board can monitor the real-time status of each energy-taking method and quickly switch to another energy-taking method when one of the energy-taking methods fails.

[0037] An embodiment of the present invention further provides another thyristor valve group power supply device, comprising a processor and a memory configured to store a computer program that can be run on the processor; wherein, when the processor is configured to run the computer program, the method steps in the aforementioned embodiment are executed.

[0038] In practical applications, the processor includes a field programmable gate array (FPGA), and the processor may be a central processing unit (CPU) or a digital signal processor (DSP). It is understandable that for different devices, the electronic device used to implement the function of the processor may be other, and the embodiment of the present invention does not specifically limit it.

[0039] The above-mentioned memory can be a volatile memory (volatile memory), such as a random access memory (RAM); or a non-volatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory, a hard disk (HDD) or a solid-state drive (SSD); or a combination of the above-mentioned types of memory, and provide instructions and data to the processor.

[0040] In an exemplary embodiment, an embodiment of the present invention further provides a computer-readable storage medium for storing a computer program.

[0041] Optionally, the computer-readable storage medium can be applied to any one of the methods in the embodiments of the present invention, and the computer program enables the computer to execute the corresponding processes implemented by the processor in each method in the embodiments of the present invention. For the sake of brevity, they are not described here.

[0042] In an exemplary embodiment, the present invention further provides a computer program product, which implements the method steps in the above embodiments when executed by a processor.

[0043] In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0044] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes. The schemes in the embodiments of the present invention may be implemented in various computer languages, for example, object-oriented programming language Java and literal scripting language JavaScript, etc.

[0045] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0046] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0047] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0048] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0049] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A thyristor valve group energy supply system, the thyristor valve group comprising a thyristor valve group basic unit or at least two thyristor valve group basic units, the at least two thyristor valve group basic units are connected in series, in parallel or in series and in parallel; the energy supply system is used to provide energy to a drive unit connected to a thyristor control terminal in each thyristor valve group basic unit; Features: include, At least two energy-taking power sources are configured to provide energy to the drive unit in different energy-taking modes, and the energy-taking modes of the energy-taking power sources have a redundant switching function.

2. The thyristor valve group energy supply system according to claim 1, Features: The energy supply system also includes an independent energy supply magnetic ring, and the independent energy supply magnetic ring obtains energy from an external power supply; The energy source adopts a first energy source and a second energy source, wherein the first energy source is connected to two ends of the thyristor; and the second energy source is connected to the independent energy supply magnetic ring.

3. The thyristor valve group energy supply system according to claim 2, Features: The independent energy supply magnetic ring adopts a current-type energy-taking CT, and the external power supply adopts an external current source or an energy supply circuit formed by connecting a high-voltage isolation transformer and a current generator.

4. A thyristor valve group energy supply method, wherein the thyristor valve group comprises a thyristor valve group basic unit or at least two thyristor valve group basic units, and the at least two thyristor valve group basic units are connected in series, in parallel or in series and in parallel; the energy supply method is used to provide energy to a drive unit connected to a thyristor control terminal in each thyristor valve group basic unit; Features: At least two different energy acquisition modes are used to provide energy to the driving unit, and each of the energy acquisition modes has a redundant switching function.

5. The thyristor valve group energy supply method according to claim 4, Features: Two energy-taking methods are used to provide energy to the drive unit. This includes obtaining energy from voltage fluctuations across a thyristor and obtaining energy from an independent energy supply unit.

6. The thyristor valve group energy supply method according to claim 4, Features: The independent energy supply unit obtains energy from an external power supply; the external power supply adopts an external current source or an energy supply circuit formed by connecting a high-voltage isolation transformer and a current generator.

7. A thyristor valve group power supply device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor; Features: When the processor executes the computer program, the steps of the thyristor valve group energy supply method according to any one of claims 4 to 6 are implemented.

8. A computer-readable storage medium storing a computer program; Features: When the computer program is executed by a processor, the steps of the thyristor valve group energy supply method according to any one of claims 4 to 6 are implemented.

9. A computer program product, Features: When the computer program product is executed by a processor, the steps of the thyristor valve group energy supply method according to any one of claims 4 to 6 are implemented.

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