Integrated fully automatic electronic gapless overvoltage protector tester

Abstract

This utility model relates to the field of power equipment testing technology, specifically an integrated fully automatic electronic gapless overvoltage protector tester, including a power processing module, a high-voltage generation module, a measurement and protection module, and a human-machine interaction module. The input end of the power processing module is connected to an external power supply, and the output end is connected to the high-voltage generation module. The output end of the high-voltage generation module is used to connect to the overvoltage protector under test. The measurement and protection module is connected to the high-voltage generation module, the overvoltage protector under test, and the human-machine interaction module respectively. The power processing module includes a rectifier circuit and an inverter circuit, used to convert the external power supply into an electrical energy form adapted to the high-voltage generation module. The beneficial effects of this utility model are: integrated design, reducing size and weight; touch screen design, intuitive display, convenient value reading; and electronic protection circuits, achieving a protection level at the microsecond level, effectively protecting the test object.

Description

Technical Field

[0001] This utility model relates to the field of power equipment testing technology, specifically an integrated fully automatic electronic gapless overvoltage protector tester. Background Technology

[0002] In power systems, gapless overvoltage protectors are key components ensuring the safe operation of equipment, and the accuracy of their performance parameters directly affects the reliability of the power system. Currently, the industry mainly uses DC high-voltage generators for testing.

[0003] Traditional DC high-voltage generators are mostly designed as separate units, requiring multiple sets of cables to connect the main unit, high-voltage unit, and control section. This results in complex wiring, time-consuming on-site setup, and bulky size, making them unsuitable for field operations or operation in confined spaces. They rely on manual adjustment of the voltage boosting and deboosting processes, which is not only inefficient but also prone to measurement errors due to differences in operating techniques, affecting the consistency of test data. They employ mechanical or electromagnetic protection devices with response times mostly in the millisecond range or higher. When the test sample suddenly breaks down or short-circuits, they cannot cut off the high voltage in time, which may cause damage to the test sample or equipment failure. Furthermore, their fixed output voltage range makes it difficult to adapt to the testing requirements of overvoltage protectors of different models and voltage levels. Utility Model Content

[0004] The purpose of this invention is to provide an integrated, fully automatic electronic overvoltage protector tester without gaps, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated fully automatic electronic gapless overvoltage protector tester, including a power processing module, a high voltage generation module, a measurement and protection module, and a human-machine interaction module;

[0006] The power processing module has its input end connected to an external power supply and its output end connected to a high-voltage generator module.

[0007] The output terminal of the high voltage generating module is used to connect to the overvoltage protector under test.

[0008] The measurement and protection module is connected to the high voltage generation module, the overvoltage protector under test, and the human-machine interaction module, respectively.

[0009] The power processing module includes a rectifier circuit and an inverter circuit, used to convert external power supply into an electrical energy form adapted to the high voltage generation module. The high voltage generation module includes a boost unit and a rectifier unit, used to generate the DC high voltage required for testing. The measurement and protection module includes a parameter monitoring unit and a fast protection unit. The parameter monitoring unit is used to collect voltage and current data during the test process. The fast protection unit is used to cut off the circuit in abnormal conditions. The human-machine interaction module is used to realize parameter setting, data display and result output functions.

[0010] Preferably, the rectifier circuit adopts a full-wave rectifier structure, and the external power supply is AC220V alternating current.

[0011] Preferably, the boost unit includes an intermediate frequency boost circuit to boost the input voltage to 5000-15000V, the rectifier unit includes a voltage doubler rectifier circuit to further boost the voltage to DC20kV-50kV, and the voltage doubler rectifier circuit is a negative polarity rectifier circuit to boost the voltage to DC30kV.

[0012] Preferably, the inverter circuit is a transistor inverter circuit, and the transistor is a MOSFET.

[0013] Preferably, the human-computer interaction module includes a touch display unit and a printing unit, wherein the touch display unit is a touch screen and the printing unit is an embedded printer.

[0014] Compared with existing technologies, the advantages of this utility model are: the integrated structural design significantly reduces volume and weight, eliminates redundant wiring, and is easy to carry and operate on-site, making it especially suitable for outdoor substations, power distribution rooms, and other scenarios; visual operation is achieved through a touch screen, and with the automatic control function, testing can be completed without professional personnel, reducing human error; the microsecond-level electronic protection response speed is far superior to the millisecond-level protection of traditional equipment, effectively avoiding damage to the test object and equipment; the voltage output range is adjustable (20kV-50kV), adapting to the testing needs of different models of gapless overvoltage protectors, expanding the application scenarios of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the module structure of this utility model.

[0016] In the diagram: 1. Power processing module; 11. Rectifier circuit; 12. Inverter circuit; 2. High voltage generation module; 21. Boost unit; 22. Rectifier unit; 23. Intermediate frequency boost circuit; 24. Voltage doubler rectifier circuit; 3. Measurement and protection module; 31. Parameter monitoring unit; 32. Fast protection unit; 4. Human-machine interaction module; 41. Touch display unit; 42. Printing unit. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1 The present invention provides the following technical solution:

[0019] The integrated fully automatic electronic gapless overvoltage protector tester includes a power processing module 1, a high voltage generation module 2, a measurement and protection module 3, and a human-machine interaction module 4.

[0020] The input terminal of power processing module 1 is connected to an external power supply, and the output terminal is connected to high voltage generating module 2.

[0021] The output terminal of high voltage generator module 2 is used to connect to the overvoltage protector under test;

[0022] The measurement and protection module 3 is connected to the high voltage generation module 2, the overvoltage protector under test, and the human-machine interface module 4, respectively.

[0023] The power processing module 1 includes a rectifier circuit 11 and an inverter circuit 12, which are used to convert external power supply into an electrical energy form that is compatible with the high voltage generating module 2. The high voltage generating module 2 includes a boost unit 21 and a rectifier unit 22, which are used to generate the DC high voltage required for testing. The measurement and protection module 3 includes a parameter monitoring unit 31 and a fast protection unit 32. The parameter monitoring unit 31 is used to collect voltage and current data during the test process, and the fast protection unit 32 is used to cut off the circuit in abnormal conditions. The human-machine interaction module 4 is used to realize parameter setting, data display and result output functions.

[0024] The rectifier circuit 11 adopts a full-wave rectification structure, and the external power supply is AC220V. The boost unit 21 includes an intermediate frequency boost circuit 23, which boosts the input voltage to 5000-15000V. The rectifier unit 22 includes a voltage doubler rectifier circuit 24, which further boosts the voltage to DC20kV-50kV. The voltage doubler rectifier circuit 24 is a negative polarity rectifier circuit, which can boost the voltage to DC30kV. The inverter circuit 12 adopts a transistor inverter circuit, and the transistor is a MOSFET. The human-machine interaction module 4 includes a touch display unit 41 and a printing unit 42. The touch display unit 41 is a touch screen, and the printing unit 42 is an embedded printer.

[0025] In operation, after an external AC220V power supply is connected, the power is rectified by the rectifier circuit 11 in the power processing module 1 to convert it into DC power. Then, it is converted into medium-frequency AC power by the MOSFET transistor inverter circuit 12. Subsequently, the voltage is boosted to 10000V through the high-voltage generation module 2, the boost unit 21, and the medium-frequency boost circuit 23. Then, it is further boosted to DC30kV by the negative polarity voltage doubler rectifier circuit 24 in the rectifier unit 22 and applied to the overvoltage protector under test. The measurement and protection module 3 monitors the voltage and leakage current in real time during the test through the parameter monitoring unit 31. It adopts the electronic protection mechanism of the fast protection unit 32 with microsecond-level response. When an abnormality occurs, it quickly cuts off the circuit to protect the test sample and the tester itself. At the same time, the monitoring data is transmitted to the human-machine interaction module 4 of the touch display unit 41 and the printing unit 42. The touch screen is used for parameter setting and data display, and the printer is used to output the test results. The whole process realizes fully automatic operation of automatic voltage boosting, automatic measurement, and automatic voltage reduction. Moreover, due to the integrated design, the size and weight are greatly reduced, making it easy to use.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated full-automatic electronic non-gap overvoltage protector tester, characterized in that: It includes a power processing module (1), a high voltage generation module (2), a measurement and protection module (3), and a human-machine interaction module (4); The power processing module (1) has an input terminal connected to an external power supply and an output terminal connected to a high voltage generating module (2). The output terminal of the high voltage generating module (2) is used to connect to the overvoltage protector under test; The measurement and protection module (3) is connected to the high voltage generation module (2), the overvoltage protector under test and the human-machine interaction module (4) respectively; The power processing module (1) includes a rectifier circuit (11) and an inverter circuit (12) for converting external power supply into an electrical energy form compatible with the high voltage generating module (2). The high voltage generating module (2) includes a boost unit (21) and a rectifier unit (22) for generating the DC high voltage required for testing. The measurement and protection module (3) includes a parameter monitoring unit (31) and a fast protection unit (32). The parameter monitoring unit (31) is used to collect voltage and current data during the test process. The fast protection unit (32) is used to cut off the circuit in abnormal conditions. The human-machine interaction module (4) is used to realize parameter setting, data display and result output functions.

2. The integrated full-automatic electronic non-gap overvoltage protector tester according to claim 1, characterized in that: The rectifier circuit (11) adopts a full-wave rectification structure, and the external power supply is AC220V AC power.

3. The integrated full-automatic electronic non-gap overvoltage protector tester according to claim 1, characterized in that: The boost unit (21) includes an intermediate frequency boost circuit (23) to boost the input voltage to 5000-15000V. The rectifier unit (22) includes a voltage doubler rectifier circuit (24) to further boost the voltage to DC20kV-50kV. The voltage doubler rectifier circuit (24) is a negative polarity rectifier circuit that can boost the voltage to DC30kV.

4. The integrated full-automatic electronic non-gap overvoltage protector tester according to claim 1, characterized in that: The inverter circuit (12) adopts a transistor inverter circuit, and the transistor is a MOSFET.

5. The integrated full-automatic electronic non-gap overvoltage protector tester according to claim 1, characterized in that: The human-computer interaction module (4) includes a touch display unit (41) and a printing unit (42). The touch display unit (41) is a touch screen, and the printing unit (42) is an embedded printer.

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