Parallel stepless inductance-adjusting power supply for broadband voltage transformer verification boosting and adjusting method

Abstract

The invention discloses a parallel stepless inductance-regulating power supply for checking and boosting a broadband voltage transformer and a regulating method, and relates to the technical field of error checking and metering of power broadband voltage transformers, and the parallel stepless inductance-regulating power supply comprises a broadband voltage-regulating power supply, a broadband boosting power supply, a stepless inductance-regulating unit, a broadband current detection unit and a compensation control unit. According to the parallel stepless inductance-regulating power supply for checking and boosting the broadband voltage transformer, the stepless inductance-regulating unit is connected in parallel with the primary side of the broadband boosting power supply, and the direct-current excitation coil is arranged in the stepless inductance-regulating high-voltage reactor, so that the purpose of changing the inductance value of the high-voltage reactor is achieved by regulating excitation current; according to the method, the compensation effect is judged by detecting the magnitude of the primary current of the broadband boost power supply, the magnitude of the excitation current needed under the complex working condition does not need to be calculated, and adjustment is easy.

Description

Technical Field

[0001] The invention relates to the technical field of error calibration and measurement of electric power broadband voltage transformers, in particular to a parallel stepless inductance regulating power supply and a regulating method for broadband voltage transformer calibration and boosting. Background Art

[0002] In the new power system with new energy grid connection and high power electronic load, the harmonic content is relatively large. Under the influence of wide-frequency harmonics, electricity metering is prone to measurement errors, affecting the fairness of electricity trading.

[0003] The rated fundamental frequency of the power broadband voltage transformer is 50Hz or 60Hz, and the harmonic order is up to 50 times; according to JJG1177-2021 "Verification of Harmonic Voltage Transformers", the maximum voltage is 120% of the rated voltage. Taking the 110kV voltage level as an example, U = 110 / √3kV×1.2 = 76.2kV, the equivalent capacitance of the voltage transformer and external cables is about 1000pF. If the standard for harmonic detection is capacitive, in order to ensure its accuracy, its capacitance is generally not less than 1000pF. The required test current at the power frequency of 50Hz is I = ωCU = 2πfCU = 2×3.14×50×2000×10 -12 ×76.2×10 3 =0.048A, the required current under the 50th harmonic is I = ωCU = 2πfCU = 2 × 3.14 × 2500 × 1000 × 10 -12 ×76.2×10 3 =2.4A, so the required test power capacity is 76.2×2.4=182.8kVA; if a voltage transformer with a higher voltage level is considered, the test voltage and test current will be larger, and the required test power capacity will be larger. The laboratory is generally unable to provide such a large-capacity test power supply, which is not convenient for the test. As the power supply for voltage transformer boosting, compensation can generally be used to reduce the test power capacity requirements, but it can only achieve compensation under a single frequency or fixed capacitance. The wide-band voltage transformer calibration compensation of this scheme must not only meet the requirements of the power frequency but also meet the requirements of the wide frequency range of 50Hz~2500Hz. At the same time, the tested capacitance is also variable (non-fixed, different systems have different capacitances), so how to realize the design of the boost power supply for the wide-band voltage transformer is a difficult problem for wide-band voltage transformer calibration. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention is proposed.

[0005] Therefore, the technical problem solved by the present invention is: when measuring the harmonic error of the existing power voltage transformer, the capacity of the wide-frequency boost power supply is large and the test power supply cannot be realized. The output current of the wide-frequency boost power supply is reduced by compensating with a high-voltage shunt reactor, thereby reducing the capacity of the wide-frequency boost power supply, the wide-frequency voltage regulating power supply and the test power supply provided by the laboratory.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a parallel stepless inductance regulating power supply for wide-frequency voltage transformer calibration and boosting, comprising:

[0007] A wide-band voltage-regulating power supply, a wide-band boost power supply, a stepless inductance regulating unit, a wide-band current detection unit and a compensation control unit. The input end of the wide-band voltage-regulating power supply is connected to the test site power supply, and the output end of the wide-band voltage-regulating power supply is connected to the secondary side of the wide-band boost power supply. The primary tail end of the wide-band boost power supply is connected to the wide-band current detection unit, and the other end of the wide-band current detection unit is grounded. The stepless inductance regulating unit is connected in parallel at both ends of the wide-band boost power supply and the wide-band current detection unit. One end of the compensation control unit is connected to the wide-band current detection unit for collecting and feeding back the primary side current, and the other end is connected to the stepless inductance regulating unit to realize the adjustment of the stepless inductance regulating unit.

[0008] As a preferred solution of the parallel stepless inductance regulating power supply for wide-band voltage transformer calibration and boosting described in the present invention, the wide-band voltage regulating power supply inputs industrial frequency power supply, outputs single-phase voltage, and the voltage frequency is continuously adjustable.

[0009] As a preferred solution of the parallel stepless inductance regulating power supply for wide-band voltage transformer calibration and boosting described in the present invention, the wide-band boosting power supply and the wide-band voltage regulating power supply form a high-voltage wide-band power supply with adjustable frequency and amplitude, and the output high voltage matches the high voltage required for the calibration of the power wide-band voltage transformer.

[0010] As a preferred solution of the parallel stepless inductance regulating power supply for wide-frequency voltage transformer calibration boosting described in the present invention, wherein: the stepless inductance regulating unit includes a stepless inductance regulating high-voltage reactor and a programmable DC voltage source, which are used for compensating the wide-frequency boosting power supply; the compensation method is parallel compensation.

[0011] As a preferred solution of the parallel stepless inductance regulating power supply for wide-frequency voltage transformer calibration and boosting described in the present invention, the stepless inductance regulating high-voltage reactor is used to adjust the inductance of the reactor, and the programmable DC voltage source is used to provide DC voltage and adjust the excitation current to change the inductance of the reactor.

[0012] As a preferred solution of the parallel stepless inductance regulating power supply for wide-band voltage transformer calibration boosting described in the present invention, wherein: the wide-band current detection unit is a current sensing unit, and the current sensor is connected in series to the primary tail end of the wide-band boosting power supply to measure the primary current size of the boosting power supply.

[0013] As a preferred solution of the parallel stepless inductance regulating power supply for wide-band voltage transformer calibration and boosting described in the present invention, the compensation control unit measures the current of the wide-band current detection unit, calculates the parallel inductance required for compensation according to the current size, controls the output of the DC voltage, and steplessly adjusts the inductance of the high-voltage reactor to minimize the primary current of the wide-band boosting power supply.

[0014] Another object of the present invention is to provide a method for regulating a parallel stepless inductance regulating power supply for wide-band voltage transformer calibration and boosting, so as to solve the problem that the existing power voltage transformer calibration and boosting method has the problem of large test power supply capacity and cannot meet the error calibration requirements under high voltage, wide frequency and large capacitance, as well as how to optimize the power supply design under different frequency and capacitance conditions.

[0015] To solve the above technical problems, the present invention provides the following technical solutions: a method for regulating a parallel stepless inductance regulating power supply for wide-band voltage transformer calibration and boosting, comprising: providing an initial voltage through a programmable wide-band voltage regulating power supply, and controlling the output voltage not to exceed the high voltage required for calibration; using a wide-band current detection unit to detect the primary current of the wide-band boost power supply; adjusting the output of the programmable DC voltage source through a compensation control unit based on the detected primary current to change the inductance of the stepless inductance regulating high-voltage reactor; the regulation process continues until the current is minimum, and stops regulating the DC voltage output; after the compensation reaches the optimal state, the programmable wide-band voltage regulating power supply provides the required calibration voltage; if the primary current exceeds the rated current of the wide-band boost power supply during the boosting process, the programmable wide-band voltage regulating power supply will adjust the output voltage, and repeat the above regulation process until the current returns to a preset range.

[0016] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of verifying a parallel stepless inductance regulating power supply for boosting a wide-frequency voltage transformer as described above are implemented.

[0017] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of verifying a parallel stepless inductance regulating power supply for a wide-frequency voltage transformer for boosting as described above.

[0018] Beneficial effects of the present invention: The parallel stepless inductance regulating power supply for wide-band voltage transformer calibration and boosting provided by the present invention adjusts the excitation current to change the inductance of the high-voltage reactor by connecting a stepless inductance regulating unit in parallel on the primary side of the wide-band boosting power supply, and setting a DC excitation coil in the stepless inductance regulating high-voltage reactor, thereby achieving the purpose of stepless inductance regulation. The method determines the compensation effect by detecting the primary current size of the wide-band boosting power supply, and there is no need to calculate the excitation current size required under complex working conditions, and the adjustment is simple.

[0019] At the same time, the capacity of the broadband power supply system is minimized. Through compensation, the required power supply capacity is only 1 / 5 to 1 / 3 of the maximum test capacity, which not only reduces the difficulty of the test, but also reduces the volume and weight of the equipment, and also reduces the equipment cost, realizing the miniaturization design and economy of the power supply system. This power supply can not only realize the power frequency calibration and boosting of the broadband voltage transformer of the power, but also can be used for error calibration and boosting of the broadband voltage transformer of the power under the 2-50th harmonics.

[0020] The present invention can also monitor the primary current of the broadband boost power supply in real time for system protection. When the current exceeds a set current value (the set current is the rated primary current of the broadband boost power supply), the broadband voltage regulating power supply output can be shut off to protect the boost power supply system and avoid system damage caused by overcurrent. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 The overall structure diagram of a parallel stepless inductance regulating power supply for wide-frequency voltage transformer calibration and boosting provided by one embodiment of the present invention.

[0023] Figure 2 A schematic diagram of the principle of a stepless inductance regulating unit in a parallel stepless inductance regulating power supply for wide-frequency voltage transformer calibration and boosting provided by an embodiment of the present invention.

[0024] Figure 3 A boost control flow chart of a parallel stepless inductance regulating power supply for wide-frequency voltage transformer calibration boosting is provided in one embodiment of the present invention.

[0025] Figure 4 An experimental schematic diagram of a parallel stepless inductance regulating power supply for wide-frequency voltage transformer calibration and boosting provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Example 1

[0029] Reference Figure 1-Figure 2 , which is an embodiment of the present invention, provides a parallel stepless inductance regulating power supply for wide-frequency voltage transformer calibration and boosting, comprising:

[0030] Wide-band voltage regulating power supply, wide-band boost power supply, stepless inductance regulating unit, wide-band current detecting unit, compensation control unit.

[0031] The input end of the broadband voltage-regulating power supply is connected to the power supply at the test site, the output end of the broadband voltage-regulating power supply is connected to the secondary side of the broadband boost power supply, the primary side tail end of the broadband boost power supply is connected to the broadband current detection unit, the other end of the broadband current detection unit is grounded, the stepless inductance unit is connected in parallel at both ends of the broadband boost power supply and the broadband current detection unit, one end of the compensation control unit is connected to the broadband current detection unit for collecting and feeding back the primary side current, and the other end is connected to the stepless inductance unit to realize the adjustment of the stepless inductance unit.

[0032] The input of the wide-band voltage-regulated power supply is a three-phase 380V, 50Hz industrial frequency power supply, and the output is a 0-400V single-phase voltage. The voltage frequency is continuously adjustable from 50Hz to 2500Hz, and the adjustment fineness is 0.1Hz.

[0033] The broadband boost power supply is composed of a transformer based on the principle of electromagnetic induction. Its input voltage is 0-400V and the input voltage frequency range is 50Hz~2500Hz. This power supply and the broadband voltage regulating power supply form a high-voltage broadband power supply with adjustable frequency and amplitude. The output high voltage matches the high voltage required for the calibration of the power broadband voltage transformer. For example, the calibration voltage required for a 110kV broadband voltage transformer is not less than 110 / √3×120% kV.

[0034] The stepless inductance regulating unit includes a stepless inductance regulating high-voltage reactor and a program-controlled DC voltage source, which is used for compensating the wide-band boost power supply; the compensation method is parallel compensation to reduce the high-voltage current of the wide-band boost power supply;

[0035] The stepless inductance-adjustable high-voltage reactor is an iron core structure reactor, which consists of a silicon steel core, an inductor coil, and an excitation coil. The programmable DC voltage source is used to provide DC voltage to excite the core to generate excitation current. The relative magnetic permeability is changed by changing the DC excitation current, which changes the inductance of the reactor to achieve different compensation inductance requirements at different frequencies, thereby achieving minimum high-voltage current to adapt to the needs of broadband boost power supply.

[0036] The broadband current detection unit is a current sensing unit. The current sensor is connected in series to the primary end of the broadband boost power supply and is used to measure the primary current of the boost power supply.

[0037] The compensation control unit measures the current of the wide-band current detection unit, calculates the parallel inductance required for compensation based on the current size, and then controls the output of the DC voltage to steplessly adjust the inductance of the high-voltage reactor to minimize the primary current of the wide-band boost power supply, thereby achieving optimal compensation for the boost system, reducing the capacity requirements of the wide-band voltage regulating power supply and meeting the needs of the power wide-band voltage transformer for calibration and boosting.

[0038] The embodiment of the present invention provides a parallel stepless inductance-adjustable broadband power supply for checking and boosting broadband voltage transformers, which can solve the problem that the capacity of the broadband boost power supply is large and the test power supply cannot be realized when measuring the harmonic error of the existing power voltage transformer. The output current of the broadband boost power supply is reduced by the compensation method of the high-voltage parallel reactor, thereby reducing the capacity of the broadband boost power supply, the broadband voltage-regulating power supply and the test power supply provided by the laboratory. The required power supply capacity is only 1 / 5 to 1 / 3 of the maximum test capacity through compensation, which not only reduces the difficulty of the test, but also reduces the volume and weight of the equipment and the equipment cost. The present invention achieves the purpose of stepless inductance adjustment by adjusting the excitation current to change the inductance of the high-voltage reactor by setting a DC excitation coil in the high-voltage reactor. The method judges the compensation effect by detecting the primary current of the broadband boost power supply, and does not need to calculate the required excitation current size under complex working conditions, and the adjustment is simple; at the same time, the primary current of the broadband boost power supply is also used for the protection of the boost power supply by real-time monitoring, so that the power supply system works under safe conditions and does not cause overcurrent to cause system damage.

[0039] See also Figure 1 As shown, a parallel stepless inductance-adjustable wide-band power supply for wide-band voltage transformer calibration and boosting includes: a wide-band voltage regulating power supply, a wide-band boosting power supply, a stepless inductance-adjustable high-voltage reactor, a wide-band current detection unit, and a compensation control unit.

[0040] See also Figure 2 The schematic diagram of a wide-band voltage transformer calibration boosting parallel stepless inductance wide-band power supply stepless inductance unit is shown. The high-voltage reactor is connected in parallel with the wide-band boosting power supply. Because the wide-band voltage transformer under test has capacitance, the primary current is compensated by means of parallel inductance. When the primary current is only supplied to the active components of the system, the optimal compensation is achieved, thereby achieving the purpose of reducing the capacity of the wide-band boost power supply. Because the capacitance of the wide-band voltage transformer under test is not a fixed value, the capacitance is inconsistent for different tests and wiring methods, so the required inductance must also be adjusted according to the system capacitance under test; and for the same capacitance system, the required inductance is different at different system frequencies, and the inductance also needs to be adjusted according to the frequency.

[0041] The stepless inductance regulating high-voltage reactor is an iron core structure reactor, that is, it includes a silicon steel sheet iron core, an inductor coil, and an excitation coil. The inductance L of the iron core reactor is:

[0042]

[0043] N is the number of coil turns, R m Reluctance

[0044]

[0045] h is the coil length, u is the relative magnetic permeability, and s is the coil area.

[0046] In order to change the inductance, the coil length can be increased or decreased, the magnetic permeability can be decreased or increased, and the coil area can be decreased or increased. However, after the reactor coil is designed, the coil length, that is, the area, cannot be changed. The inductance can only be changed by changing the relative magnetic permeability.

[0047] The stepless inductance regulating high-voltage reactor is provided with a DC excitation coil, and a DC voltage is applied to the coil to generate an excitation current. The relative magnetic permeability is changed by changing the DC excitation current, thereby achieving the purpose of changing the inductance.

[0048] The present invention does not need to calculate the wire diameter of the reactor coil, measure the coil direct resistance, measure the BH curve, adjust the reactor air gap, etc., but only measures the primary current through the broadband current detection unit. When the primary current is the smallest, it proves that the compensation is optimal and the inductance is the most matched. Therefore, the primary current of the broadband boost power supply can be measured in real time, and the DC voltage can be adjusted at the same time. When the adjusted voltage minimizes the current, it is sufficient.

[0049] Example 2

[0050] Reference Figure 3 , which is an embodiment of the present invention, provides an adaptive adjustment method for a parallel stepless inductance wide-band power supply for wide-band voltage transformer calibration boost, comprising:

[0051] Connect the test wiring as required;

[0052] Program-controlled wide-frequency voltage-regulated power supply V / F output, the voltage output shall not exceed 20% of the high voltage required for calibration. Too high voltage may cause overcurrent of the boost power supply and damage the wide-frequency boost power supply. Too low voltage may cause inaccurate compensation due to the nonlinearity of the reactor, thereby increasing the output current of the boost power supply and even failing to boost to the required voltage value.

[0053] Detecting the primary current of the broadband boost power supply by a broadband current detection unit;

[0054] The primary current of the wide-band boost power supply is measured by the compensation control unit, and the output of the DC voltage is controlled according to the primary current;

[0055] By adjusting the DC voltage, the high-voltage reactor core is excited, thereby changing the inductance of the reactor. The change in inductance achieves the purpose of compensation adjustment.

[0056] By real-time measuring and judging the primary current of the broadband boost power supply, the effect of the reactor compensation is determined. When the current is minimum, the compensation reaches the optimal value and the DC voltage adjustment is stopped.

[0057] After the compensation reaches the best, the program-controlled wide-frequency voltage-regulated power supply voltage output is realized to realize the calibration of different voltage points;

[0058] During the voltage boosting process, the primary current of the broadband boosting power supply is detected in real time. If it exceeds the rated current value of the broadband boosting power supply, the voltage is reduced to 20% of the required high voltage, and then steps 2-7 are repeated to re-compensate and adjust.

[0059] See also Figure 3 The schematic diagram of the boost control principle of a parallel stepless inductance broadband power supply for checking and boosting a broadband voltage transformer is shown. After adjusting and compensating at low voltage, the boost check is performed by program control. The control principle needs to be performed at a suitable voltage. The present invention sets it to about 20% of the rated voltage. If it is too large, overcurrent may occur, resulting in damage to the broadband boost power supply. If it is too small, inaccurate compensation may occur under high voltage due to the nonlinearity of the inductor inductance (V / L nonlinearity), and the optimal compensation cannot be achieved, which increases the power supply capacity and may cause overcurrent in the broadband boost power supply in severe cases.

[0060] The control principle also monitors the primary current of the wide-band boost power supply in real time for system protection. When the current exceeds the set current value (the set current is the rated primary current of the wide-band boost power supply), the output of the wide-band voltage regulating power supply can be shut down to protect the boost power supply system and avoid system damage caused by overcurrent.

[0061] Example 3

[0062] An embodiment of the present invention is different from the first two embodiments in that:

[0063] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0064] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0065] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0066] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0067] Example 4

[0068] Reference Figure 4 , which is an embodiment of the present invention, provides a high-voltage transmission line monitoring method based on an efficient self-organizing network technology. In order to verify the beneficial effects of the present invention, a scientific demonstration is carried out through simulation experiments.

[0069] like Figure 4 As shown in the figure, the simulation is carried out by comparing and analyzing the magnetic field strength of the core coil under normal power frequency AC and the magnetic field strength under DC deviation.

[0070] Select a fixed reactor with rated voltage: 18kV, rated current: 2A, rated frequency: 42Hz, and rated inductance of 33.5H. Test the inductance under AC as follows:

[0071] Input voltage(V) Measured current (A) L(H) 2190 0.2 34.9 2730 0.25 34.8 3282 0.3 34.8

[0072] A DC coil with a coil wire diameter of 0.4mm2 and 100T turns is set next to the reactor, and a DC voltage is applied.

[0073] When 0.1ADC is applied, its inductance is measured as follows:

[0074] Input voltage(V) Measured current (A) L(H) 2085 0.25 26.6 2900 0.35 26.4

[0075] When 0.2ADC is applied, its inductance is measured as follows:

[0076] Input voltage(V) Measured current (A) L(H) 1800 0.25 22.9 2450 0.35 22.3

[0077] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A parallel stepless inductance regulating power supply for wide-band voltage transformer calibration and boosting, characterized in that: include: Wide-band voltage regulating power supply, wide-band boost power supply, stepless inductance regulating unit, wide-band current detecting unit and compensation control unit; The input end of the broadband voltage regulating power supply is connected to the power supply at the test site, and the output end of the broadband voltage regulating power supply is connected to the secondary side of the broadband boost power supply; The primary side tail end of the broadband boost power supply is connected to the broadband current detection unit, and the other end of the broadband current detection unit is grounded; The stepless inductance regulating unit is connected in parallel at both ends of the wide-band boost power supply and the wide-band current detection unit; One end of the compensation control unit is connected to the broadband current detection unit for collecting and feeding back the primary-side current, and the other end is connected to the stepless inductance adjustment unit to achieve adjustment of the stepless inductance adjustment unit.

2. The parallel stepless inductance regulating power supply for wide-band voltage transformer calibration and boosting as claimed in claim 1, characterized in that: The wide-band voltage-regulating power supply inputs an industrial frequency power supply and outputs a single-phase voltage, and the voltage frequency is continuously adjustable.

3. The parallel stepless inductance regulating power supply for wide-band voltage transformer calibration and boosting as claimed in claim 2, characterized in that: The broadband boost power supply and the broadband voltage regulating power supply form a high-voltage broadband power supply with adjustable frequency and amplitude, and the output high voltage matches the high voltage required for the verification of the power broadband voltage transformer.

4. The parallel stepless inductance regulating power supply for wide-band voltage transformer calibration and boosting as claimed in claim 3, characterized in that: The stepless inductance regulating unit comprises a stepless inductance regulating high-voltage reactor and a programmable direct current voltage source, and is used for compensating a wide-frequency boost power supply; the compensation method is parallel compensation.

5. The parallel stepless inductance regulating power supply for wide-band voltage transformer calibration and boosting as claimed in claim 4, characterized in that: The stepless inductance regulating high-voltage reactor is used to adjust the inductance of the reactor; The program-controlled DC voltage source is used to provide a DC voltage and adjust the excitation current to change the inductance of the reactor.

6. The parallel stepless inductance regulating power supply for wide-band voltage transformer calibration and boosting as claimed in claim 5, characterized in that: The broadband current detection unit is a current sensing unit. The current sensor is connected in series to the primary tail end of the broadband boost power supply and is used to measure the primary current of the boost power supply.

7. The parallel stepless inductance regulating power supply for wide-band voltage transformer calibration and boosting as claimed in claim 6, characterized in that: The compensation control unit measures the current of the broadband current detection unit, calculates the parallel inductance required for compensation according to the current magnitude, controls the output of the DC voltage, and steplessly adjusts the inductance of the high-voltage reactor to minimize the primary current of the broadband boost power supply.

8. An adaptive adjustment method for verifying a parallel stepless inductance regulating power supply for boosting using a wide-band voltage transformer as claimed in any one of claims 1 to 7, characterized in that: include: The initial voltage is provided by a program-controlled wide-frequency voltage-regulating power supply, and the output voltage is controlled not to exceed the high voltage required for verification; Using a broadband current detection unit to detect a primary current of a broadband boost power supply; According to the detected primary current, the output of the programmable DC voltage source is adjusted by the compensation control unit to change the inductance of the stepless inductance regulating high-voltage reactor; The regulation process continues until the current reaches a minimum, and the DC voltage output is adjusted. After the compensation reaches the optimal state, the program-controlled wide-frequency voltage-regulated power supply provides the required calibration voltage; If the primary current exceeds the rated current of the wide-band boost power supply during the boost process, the programmable wide-band voltage regulating power supply will adjust the output voltage and repeat the above adjustment process until the current returns to the preset range.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the adaptive adjustment method of the parallel stepless inductance regulating power supply for wide-frequency voltage transformer calibration boosting as described in claim 8 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, the steps of the adaptive adjustment method of the parallel stepless inductance regulating power supply for wide-frequency voltage transformer calibration boosting as described in claim 8 are implemented.

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