Method and system for quickly diagnosing fault module of high-voltage power supply and high-voltage power supply

Abstract

The invention discloses a fault module rapid diagnosis method and system for a high-voltage power supply and the high-voltage power supply, and the method comprises the steps: calculating the number of power supply modules needing to be input and the voltage types of the power supply modules according to the voltage requirement of a load, and generating corresponding control pulse signals according to the number and the voltage types of the power supply modules, and controlling the switching-on and switching-off of the corresponding power supply modules; acquiring output voltage signals of all input power supply modules in real time; and judging whether the control pulse signal of each power supply module is matched with the output voltage signal of the power supply module in the working state or not, if so, determining that the working mode of the power supply module is correct, otherwise, determining that the power supply module is in an incorrect state, and determining that the power supply module is a fault module. According to the method, the abnormal working states of the power supply modules can be judged through one-time testing, the low efficiency of a successive exclusion method in a conventional diagnosis method is avoided, and the diagnosis positioning speed is greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of high-voltage power supplies, and specifically relates to a method and system for quickly diagnosing faulty modules of a high-voltage power supply and a high-voltage power supply. Background Art

[0002] In the physical experiments of tokamak devices, heating experiments such as electron cyclotron, lower hybrid wave, and neutral beam injection are often carried out to obtain corresponding physical experimental results. Gyrotrons, klystrons, neutral beam ion sources, etc. are key components of the heating system, and a PSM-type high-voltage power supply is usually used to provide high voltage for such loads. The capacity of the high-voltage power supply is usually in the MW level, or even exceeds dozens of MW, and its output voltage can reach about 200 kV. The PSM-type high-voltage power supply usually uses hundreds of DC power supply modules connected in series to superimpose into a high voltage. Since the power supply modules are in a high-voltage environment, it is possible for the power supply modules to be damaged during use, or even if some power supply modules are not damaged but are not put into operation according to the specified requirements, the high-voltage pulses output by the power supply will be abnormal, which is not conducive to the operation and power output of loads such as gyrotrons, klystrons, and neutral beam ion sources. It is necessary to quickly find the power supply modules that are not put into operation according to the control requirements among a large number of power supply modules and determine their fault categories. The static fault diagnosis of high-voltage power supply modules is relatively easy, but the dynamic fault diagnosis is relatively difficult. Since the high-voltage power supply operates in a pulsed manner, the fault types of the power supply modules are not single. The faults of some modules only appear when the power supply is put into operation as a whole. The conventional method for finding faulty power supply modules is the step-by-step screening method of power supply modules, that is, each power supply module is individually put into test, or the output voltage of the high-voltage power supply is gradually increased in a controlled manner, and the power supply modules are gradually put into operation, or the modules are put into operation in a distributed manner to determine the fault location of the power supply modules, and then the specific diagnosis of module faults is carried out. Since there are a large number of high-voltage power supplies used in heating experiments, usually dozens of such high-voltage power supplies, and the total number of power supply modules can reach thousands, this kind of fault diagnosis has limitations, the fault location speed is slow, and it is very inconvenient, which greatly affects the efficiency of the experiment. Summary of the Invention

[0003] In order to solve the problems such as slow positioning speed existing in the existing power supply module fault diagnosis method, this application proposes a method and system for quickly diagnosing faulty modules of a high-voltage power supply and a high-voltage power supply. Through one test, this application can determine which power supply modules have abnormal working states, avoiding the low efficiency of the successive elimination method in the conventional diagnosis method and greatly improving the diagnosis and positioning speed.

[0004] In the first aspect, this application is implemented through the following technical solutions:

[0005] A method for quickly diagnosing faulty modules of a high-voltage power supply, the faulty module quick diagnosis method is implemented at the power control system end of the high-voltage power supply, and includes:

[0006] According to the voltage requirement of the load, calculate the number of power modules to be put into operation and the voltage category of the power modules, and generate corresponding control pulse signals accordingly to control the on and off of the corresponding power modules;

[0007] Obtain the output voltage signals of all the power modules put into operation in real time;

[0008] Judge whether the control pulse signal of each power module matches the output voltage signal of the power module in the working state. If they match, the working mode of the power module is correct; otherwise, the power module is in an incorrect state and is determined to be a faulty module.

[0009] In some embodiments, it further includes:

[0010] Alarm and display for the power modules determined to be faulty modules.

[0011] In a second aspect, the present application proposes a fast diagnosis system for faulty modules of a high-voltage power supply. The fast diagnosis system for faulty modules is implemented at the power control system end of the high-voltage power supply and includes:

[0012] A control unit, which calculates the number of power modules to be put into operation and the voltage category of the power modules according to the voltage requirement of the load, and generates corresponding control pulse signals accordingly to control the on and off of the corresponding power modules;

[0013] A signal acquisition unit, which is used to obtain the output voltage signals of all the power modules put into operation in real time;

[0014] And a matching unit, which is used to judge whether the control pulse signal of each power module matches the output voltage signal of the power module in the working state. If they match, the working mode of the power module is correct; otherwise, the power module is in an incorrect state and is determined to be a faulty module.

[0015] In some embodiments, it further includes:

[0016] A display unit, which is used to alarm and display the power modules determined to be faulty modules.

[0017] In a third aspect, the present application proposes a high-voltage power supply, including:

[0018] A plurality of power modules and a power control system;

[0019] The power supply control system calculates the number of power supply modules to be put into operation and the voltage categories of the power supply modules according to the voltage requirements of the load, and generates corresponding control pulse signals accordingly to control the turning on and off of the corresponding power supply modules; meanwhile, it obtains in real time the output voltage signals of all the power supply modules put into operation; and determines whether the control pulse signal of each power supply module matches the output voltage signal of the power supply module in terms of the working state. If they match, the working mode of the power supply module is correct; otherwise, the power supply module is in an incorrect state and is determined to be a faulty module.

[0020] In some embodiments, the power supply control system can also perform alarm display for the power supply modules determined to be faulty modules.

[0021] In some embodiments, the power supply control system includes:

[0022] An optoelectronic conversion circuit, which is used to convert the output voltage optical signal transmitted by each power supply module into an electrical signal and transmit it to the main control circuit;

[0023] And a main control circuit, which is used to calculate the number of power supply modules to be put into operation and the voltage categories of the power supply modules according to the requirements of the load, and generate corresponding control pulse signals accordingly to control the turning on and off of the corresponding power supply modules; receive the output voltage signals transmitted by the optoelectronic conversion circuit, and determine whether the control pulse signal of each power supply module matches its output voltage signal in terms of the working state. If they match, the working mode of the power supply module is correct; otherwise, the power supply module is in an incorrect state and is determined to be a faulty module.

[0024] In some embodiments, the power supply control system further includes:

[0025] A display module, which performs alarm display for the power supply modules determined to be faulty modules.

[0026] In some embodiments, each power supply module includes a module drive control board, and the module drive control board includes:

[0027] A voltage sampling circuit, which is used to collect the sampled voltage of the power supply module in real time and calculate the output voltage of the power supply module according to the voltage ratio;

[0028] A conditioning circuit, which shapes and filters the output voltage transmitted by the voltage sampling circuit;

[0029] An AD sampling circuit, which converts the analog signal processed by the conditioning circuit into a digital signal and sends it to the FPGA measurement module;

[0030] And, an FPGA serial port sending module, which sends the digital signals collected by the FPGA measurement module to the electro-optic conversion conditioning circuit. The electro-optic conversion conditioning circuit converts the electrical signals into optical signals, and the optical signals are transmitted through an optical fiber to the power control system.

[0031] In some embodiments, it further includes:

[0032] A multi-winding high-voltage isolation transformer, which steps down the three-phase winding high voltage to hundreds of single-phase winding voltages. Each single-phase winding voltage is fed into the AC side of the corresponding power module. A number of power modules rectify the fed-in AC into DC, and a number of power modules are connected in series on the DC side.

[0033] A method, system, and high-voltage power supply for quickly diagnosing a faulty module of a high-voltage power supply proposed in this application can achieve batch diagnosis of the working states of power modules in a high-voltage power supply through a single test, avoiding the low efficiency of the sequential elimination method in conventional diagnosis methods, effectively improving the diagnosis speed, and thus improving the experimental efficiency. In addition, diagnosis can be implemented in the control system of the high-voltage power supply, without the need to use means such as an oscilloscope at the power module to compare the output voltage of the module with the module drive control signal, avoiding the limitations of using an oscilloscope for testing. Moreover, diagnosis can be performed on the low-voltage side of the high-voltage power supply, without the need to repeatedly enter the high-voltage area for diagnosis and comparison, greatly improving the safety of diagnosis.

[0034] A method, system, and high-voltage power supply for quickly diagnosing a faulty module of a high-voltage power supply proposed in this application use FPGA chips both inside the power module and inside the control system, making full use of the high speed and parallel processing capabilities of the FPGA to monitor the key parameters of the power module in real time. When diagnosing the power module, digital signal transmission is used between the power module and the control system, avoiding the attenuation of measurement signals during transmission and improving the reliability of data. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the embodiments of the present application, form a part of the present application, and do not limit the embodiments of the present application. In the drawings:

[0036] Figure 1 is a schematic flow chart of the method proposed in the embodiment of the present application;

[0037] Figure 2 is a schematic block diagram of the system proposed in the embodiment of the present application;

[0038] Figure 3 is a schematic structural diagram of the high-voltage power supply proposed in the embodiment of the present application;

[0039] Figure 4Schematic diagram of the module drive control board and the hardware architecture of the power control system proposed in the embodiments of this application;

[0040] Reference numerals and corresponding component names:

[0041] 1 - Generator, 2 - Multi - winding high - voltage isolation transformer (multi - winding transformer), 3 - Power supply module, 4 - Load system, 5 - Power control system, 6 - Timing system, 7 - Voltage sampling (circuit), 8 - Conditioning circuit, 9 - AD sampling circuit, 10 - FPGA measurement module, 11 - FPGA serial port transmission module, 12 - Electro - optical conversion conditioning circuit, 13 - Module drive control board, 14 - Control electro - optical conversion conditioning circuit, 15 - Control FPGA, 16 - Control display and alarm (module), 17 - Fault module processing unit of the power control system. Specific embodiments

[0042] In the following, the term "comprising" or "may comprise" that can be used in various embodiments of this application indicates the presence of the invented functions, operations, or elements, and does not limit the addition of one or more functions, operations, or elements. Further, as used in various embodiments of this application, the terms "comprising", "having" and their cognates are only intended to represent specific features, numbers, steps, operations, elements, components, or combinations of the foregoing items, and should not be construed as precluding the existence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing items first.

[0043] In various embodiments of this application, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the recited words. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0044] Expressions (such as "first", "second", etc.) used in various embodiments of this application may modify various components in various embodiments, but do not limit the corresponding components. For example, the above expressions do not limit the order and / or importance of the components. The above expressions are only used for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of various embodiments of this application, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0045] It should be noted that: If it is described that a component is "connected" to another component, the first component can be directly connected to the second component, and a third component can be "connected" between the first component and the second component. Conversely, when a component is "directly connected" to another component, it can be understood that there is no third component between the first component and the second component.

[0046] The terms used in the various embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the various embodiments of the present application. As used herein, the singular form is intended to also include the plural form unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the present application belong. The terms (such as those defined in a commonly used dictionary) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning unless clearly defined in the various embodiments of the present application.

[0047] To make the objectives, technical solutions, and advantages of the present application clearer and more understandable, the present application will be further described in detail below in conjunction with embodiments and drawings. The illustrative embodiments and descriptions of the present application are only for explaining the present application and do not serve as a limitation to the present application.

[0048] Embodiment:

[0049] Since there are a large number of high-voltage power supplies used for heating experiments, and the number of power supply modules is as high as several thousand, the conventional power supply module fault location technology has limitations, and the fault location speed is slow, which greatly affects the experimental efficiency. In response to this, this embodiment proposes a method for quickly diagnosing faulty modules of high-voltage power supplies.

[0050] The method proposed in this embodiment is implemented at the power supply control system end of the high-voltage power supply, as Figure 1 shown, and includes the following steps:

[0051] Step 1, according to the voltage requirements of the load, calculate the number of power supply modules to be put into operation and the voltage categories of the power supply modules, and accordingly generate corresponding control pulse signals to control the turning on and off of the corresponding power supply modules.

[0052] Step 2, obtain the output voltage signals of all the power supply modules put into operation in real time.

[0053] Step 3, determine whether the control pulse signal of each power supply module matches the output voltage signal of the power supply module in terms of the working state. If they match, the working mode of the power supply module is correct; otherwise, the power supply module is in an incorrect state and can be determined as a faulty module.

[0054] Optionally, the method proposed in this embodiment further includes:

[0055] Step 4, perform alarm display on the power supply module determined to be a faulty module. Optionally, the working status of each power supply module can also be displayed.

[0056] Through one test, the method proposed in this embodiment can determine which power supply modules have abnormal working status, avoiding the low efficiency of the successive elimination method in conventional diagnostic methods. Compared with the conventional power supply module fault diagnosis method, its diagnosis speed is greatly improved, thus ensuring the experimental efficiency.

[0057] This embodiment also proposes a fast fault module diagnosis system for a high-voltage power supply. This fast diagnosis system is implemented at the power supply control system end of the high-voltage power supply, as Figure 2 shown. This fast diagnosis system includes:

[0058] A control unit that calculates the number of power supply modules to be put into operation and the voltage category of the power supply modules according to the voltage requirements of the load, and generates corresponding control pulse signals accordingly to control the turning on and off of the corresponding power supply modules;

[0059] A signal acquisition unit that is used to acquire the output voltage signals of all the power supply modules put into operation in real time;

[0060] And a matching unit that is used to determine whether the control pulse signal of each power supply module matches the output voltage signal of the power supply module in terms of the working status. If they match, the working mode of the power supply module is correct; otherwise, the power supply module is in an incorrect state and can be determined to be a faulty module.

[0061] Optionally, the system proposed in this embodiment further includes:

[0062] A display unit that is used to perform alarm display on the power supply modules determined to be faulty modules. Optionally, the display unit can also display the working status of each power supply module.

[0063] This embodiment also proposes a high-voltage power supply that uses the above diagnostic method or diagnostic system to achieve batch diagnosis of power supply modules. The power supply control system of this high-voltage power supply uses the above diagnostic method or diagnostic system of this embodiment to achieve batch diagnosis of its power supply modules. Specifically, as Figure 3As shown in the figure, a single set of high-voltage power supply usually consists of one or two multi-winding high-voltage isolation transformers 2, hundreds of power modules 3, a power control system 5, etc. Its electrical energy comes from the power grid or a generator 1. The multi-winding high-voltage isolation transformer 2 steps down the three-phase winding high voltage of AC3000V to hundreds of single-phase winding voltages of about AC600V. The voltage of each winding is sent to the AC side of the corresponding power module 3. After multiple power modules 3 rectify the input AC into DC, the voltage value is about DC800V. Multiple power modules 3 are connected in series on the DC side to form the final DC high-voltage output. The power control system 5 receives the control pulse signals from the load system 4 and the timing system 6. The switching devices of these power modules 3 are controlled through the power control system 5, and the power modules 3 are selectively put into operation to adjust the output of the high voltage. At the same time, the power control system 5 synchronously receives the output voltage signals of these power modules 3 and determines whether the control pulse signal of each power module matches the output voltage signal of this power module in the working state. If they match, the working mode of this power module is correct; otherwise, this power module is in an incorrect state and can be determined as a faulty module. Optionally, the power control system 5 can also display the working state of each power module and display an alarm for the faulty module. The above diagnostic system proposed in this embodiment can be set in the control system of the high-voltage power supply, thus avoiding the use of means such as an oscilloscope at the power module to conduct a comparative test between the module output power and the module drive control signal, and avoiding the limitations of the oscilloscope test method. In addition, the test can be carried out on the low-voltage side of the high-voltage power supply without repeatedly entering the high-voltage area for testing and comparison, greatly improving the safety of the test.

[0064] Optionally, this embodiment implements the above diagnosis based on FPGA, specifically with Figure 4Taking the high-voltage power supply shown as an example for further illustration, there is a module drive control board 13 inside the power supply module 3. In addition to completing the drive control and protection of the power supply module 3, the module drive control board 13 also contains a voltage sampling circuit 7, a conditioning circuit 8, an AD acquisition circuit 9, an FPGA measurement module 10, an FPGA serial port transmission module 11, an electro-optical conversion conditioning circuit 12, etc. In this embodiment, the module drive control board 13 mainly completes the acquisition of the output voltage of the power supply module 3 and transmits the acquired digital signal to the power supply control system 5 through an optical fiber. The power supply control system 5 mainly includes a control electro-optical conversion conditioning circuit 14, a control FPGA 15, and a control display and alarm 16 inside. These three parts together constitute the fault module processing unit 17 of the power supply control system 5. The power supply control system 5 calculates the power supply modules to be put into operation according to the control algorithm of the high-voltage power supply and the power requirements of the load system; receives external signals such as the load system information and the timing of the timing system, and controls hundreds of power supply modules 3 of the high-voltage power supply in real time, while detecting the status of the power supply module 3. These functions are all realized by the core control device of the power supply control system 5, that is, the control FPGA 15. The collected optical signals of the output voltage of each power supply module are converted into electrical signals by the control electro-optical conversion conditioning circuit 14 of the power supply control system 5 and then sent to the control FPGA 15. The control FPGA can comprehensively consider the control pulse signal of each power supply module and the output voltage situation of each power supply module to judge the working state of the power supply module. If the two states match, the working mode of the power supply module is correct; otherwise, the power supply module is in an incorrect state and can be judged as a faulty operation module, which is displayed through the control display and alarm 16. In this way, it can be quickly and accurately judged whether the power supply module is working properly.

[0065] The fault module rapid diagnosis method proposed in this embodiment can quickly and accurately judge the faulty operation modules in the experiment without screening one by one, greatly improving the diagnosis speed and thus improving the experimental efficiency. In this embodiment, FPGA chips are used both inside the power supply module and inside the power supply control system, making full use of the high speed and parallel processing ability of the FPGA to monitor the key parameters of the power supply module. And when testing the power supply module, digital signal transmission is adopted to avoid the attenuation of the measurement signal during transmission.

[0066] Based on the above hardware architectures of the power supply control system 5 and the module drive control board 13, the fault diagnosis and location of multiple power supply modules in the high-voltage power supply are realized, and the specific process is as follows:

[0067] According to the requirements of the load, mainly the voltage required by the load system 4, calculate the number of power supply modules 3 to be put into operation and the voltage category of the power supply module 3;

[0068] After the entire system is powered on, the voltage sampling circuit 7 in the module drive control board 13 of each power module collects the voltage on the sampling resistor of its corresponding power module 3 in real time to achieve voltage sampling, and calculates the output voltage of the power module 3 according to the voltage ratio;

[0069] The collected analog signal is subjected to voltage signal shaping and filtering by the conditioning circuit 8, converted into a digital signal by the AD sampling circuit 9, and then sent to the FPGA measurement module 10. After that, it is sent to the electro-optical conversion conditioning circuit 12 through the FPGA serial port sending module 11 to convert the electrical signal into an optical signal, and the optical signal is transmitted to the power control system 5 through the optical fiber;

[0070] The control electro-optical conversion conditioning circuit 14 in the power control system 5 converts the received optical signal into an electrical signal and then sends it to the control FPGA 15;

[0071] After receiving the power-on signal of the load system 4 and the trigger signal of the timing system 6, the control FPGA 15 of the power control system 5 controls the on and off of the corresponding power module 3 according to the control algorithm, and adjusts the on and off of each power module 3 in real time according to the feedback algorithm; on the other hand, when the control FPGA 15 of the power control system 5 finally receives the power-on signal of the load system 4, it synchronously receives the voltage acquisition signals from each power module 3;

[0072] After receiving the power-off signal of the load system 4 or other end signals of the system, the control FPGA 15 of the power control system 5 issues a control signal to turn off the corresponding power module 3, and at the same time the control FPGA 15 stops receiving the voltage acquisition signals from each power module 3; the voltage acquisition signals of the power module 3 can be controlled and displayed on the alarm 16.

[0073] After an experiment is completed, the control FPGA 15 can comprehensively consider the control pulse signals of each power module and the output voltage conditions of each power module 3 to determine whether the control pulse signals of each power module match the output voltage signals of the power module in the working state. If they match, the working mode of the power module 3 is correct; otherwise, the power module 3 is in an incorrect working state and can be determined as a faulty module, and the incorrect power module 3 is displayed on the control display alarm 16 of the power control system 5.

[0074] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present application. It should be understood that the above description is only the specific embodiments of the present application and is not used to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for rapid diagnosis of a faulty module of a high voltage power supply, characterized in that: The fault module rapid diagnosis method is implemented at the power supply control system end of the high-voltage power supply, and includes: According to the voltage requirements of the load, the number of power modules required and the voltage category of the power modules are calculated, and the corresponding control pulse signals are generated accordingly to control the opening and closing of the corresponding power modules; Obtain the output voltage signals of all power modules in real time; It is determined whether the control pulse signal of each power module matches the output voltage signal of the power module in terms of working state. If they match, the working mode of the power module is correct; otherwise, the power module is in an incorrect state and is determined to be a faulty module.

2. The method for rapid diagnosis of a fault module of a high-voltage power supply according to claim 1, characterized in that: Also includes: An alarm is displayed for the power module determined to be a faulty module.

3. A high-voltage power supply fault module rapid diagnosis system, characterized in that: The fault module rapid diagnosis system is implemented at the power supply control system end of the high-voltage power supply, and includes: A control unit, wherein the control unit calculates the number of power modules required and the voltage category of the power modules according to the voltage requirement of the load, and generates corresponding control pulse signals accordingly to control the opening and closing of the corresponding power modules; A signal acquisition unit, the signal acquisition unit is used to acquire the output voltage signals of all the power modules in real time; And, a matching unit, which is used to determine whether the control pulse signal of each power module matches the output voltage signal of the power module in terms of working status. If they match, the working mode of the power module is correct; otherwise, the power module is in an incorrect state and is determined to be a faulty module.

4. The high-voltage power supply fault module rapid diagnosis system according to claim 3, characterized in that: Also includes: A display unit is used to display an alarm for a power module determined to be a faulty module.

5. A high voltage power supply, characterized in that: include: Several power modules and a power control system; The power supply control system calculates the number of power supply modules that need to be put into use and the voltage category of the power supply modules according to the voltage requirements of the load, and generates corresponding control pulse signals accordingly to control the opening and closing of the corresponding power supply modules; at the same time, the output voltage signals of all the power supply modules put into use are obtained in real time; it is determined whether the control pulse signal of each power supply module matches the output voltage signal of the power supply module in terms of working status; if they match, the working mode of the power supply module is correct; otherwise, the power supply module is in an incorrect state and is determined to be a faulty module.

6. A high voltage power supply according to claim 5, characterized in that: The power supply control system can also display an alarm for a power supply module that is determined to be a faulty module.

7. A high voltage power supply according to claim 5 or 6, characterized in that: The power control system comprises: A photoelectric conversion circuit, which is used to convert the output voltage optical signal transmitted by each power module into an electrical signal and transmit it to the main control circuit; And, a main control circuit, the main control circuit is used to calculate the number of power modules that need to be put into use and the voltage category of the power modules according to the requirements of the load, and generate corresponding control pulse signals accordingly to control the opening and closing of the corresponding power modules; receive the output voltage signal transmitted by the photoelectric conversion circuit, and determine whether the control pulse signal of each power module and its output voltage signal match in working state; if they match, the working mode of the power module is correct; otherwise, the power module is in an incorrect state and is determined to be a faulty module.

8. A high voltage power supply according to claim 7, characterized in that: The power control system further includes: A display module is used to display an alarm for a power module determined to be a faulty module.

9. A high voltage power supply according to claim 7, characterized in that: Each of the power modules includes a module drive control board, and the module drive control board includes: A voltage sampling circuit, the voltage sampling circuit is used to collect the sampled voltage of the power module in real time and calculate the output voltage of the power module according to the voltage transformation ratio; A conditioning circuit, wherein the conditioning circuit performs shaping and filtering on the output voltage transmitted from the voltage sampling circuit; An AD sampling circuit, which converts the analog signal processed by the conditioning circuit into a digital signal and sends it to the FPGA measurement module; And, an FPGA serial port sending module, the FPGA serial port sending module sends the digital signal collected by the FPGA measurement module to the electro-optical conversion conditioning circuit, converts the electrical signal into an optical signal through the electro-optical conversion conditioning circuit, and the optical signal is transmitted to the power control system through optical fiber.

10. A high voltage power supply according to claim 7, characterized in that: Also includes: A multi-winding high-voltage isolation transformer reduces the high voltage of a three-phase winding into hundreds of single-phase winding voltages. Each single-phase winding voltage is sent to the AC side of a corresponding power module. Several power modules rectify the input AC into DC. Several power modules are connected in series on the DC side.

Images