Temperature and humidity adjusting device for multi-physical field coupling test of electronic transformer

Abstract

The invention discloses a temperature and humidity adjusting device for a multi-physics field coupling test of an electronic transformer, and the device comprises a box body, and the upper half part of the box body is provided with an isolation chamber and a temperature and humidity adjusting chamber which are independent from each other; an isolation facility is arranged on the side edge of the isolation chamber, so that the isolation chamber is completely isolated from the temperature and humidity adjusting chamber; a plurality of layers of brackets are arranged in the isolation chamber from top to bottom and are used for respectively placing an electrical fast transient pulse train generator, a surge generator and a radio frequency induction conducted disturbance generator; a first coupling and decoupling network, a second coupling and decoupling network and a third coupling and decoupling network are arranged on the side, close to the isolation chamber, of the temperature and humidity adjusting chamber from top to bottom. An insulating support is arranged on one side, far away from the isolation chamber, of the temperature and humidity adjusting chamber and used for placing tested equipment. According to the invention, multiple physical fields are effectively integrated into the same box body, so that the temperature and humidity environment required by testing is effectively provided, the testing operation process is simplified, the testing standard is standardized, and the accuracy of the testing result is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of multi-physical field coupling testing of electronic mutual inductors, and in particular to a temperature and humidity adjustment device for multi-physical field coupling testing of electronic mutual inductors. Background Art

[0002] Electronic transformers are key equipment for the intelligentization, digitization and informatization of power grids. Their safe and stable operation is of great significance to the construction of digital power grids and the building of new power systems.

[0003] Some researchers have conducted electrical fast transient pulse group immunity tests on electronic transformer acquisition cards under extreme ambient temperatures. By comparing the output waveforms, they concluded that in a high-temperature environment above room temperature, the electromagnetic immunity of the electronic transformer acquisition card will decrease with increasing temperature. When the temperature is below zero, the electromagnetic immunity of the electronic transformer acquisition card is less affected by temperature. Therefore, in hot areas, special attention should be paid to the electromagnetic interference caused by opening and closing operations. The electromagnetic immunity of the acquisition card is reduced in a high-temperature environment, which may cause abnormal operation of the equipment.

[0004] At present, both the IEC standard and the national standard require that the test requirements for each part of the electronic transformer be to test the electromagnetic compatibility and environmental reliability separately, but do not assess the impact of other possible factors. It is precisely because the existing assessment standards do not adequately simulate the actual situation of the electronic transformer in the substation, resulting in low reliability of the electronic transformers that have been put into operation, which seriously affects the promotion and application of this advanced technology in the power system. In order to improve the reliability of the electronic transformer, it is necessary to consider the temperature, humidity and other environmental factors to re-conduct the electronic transformer immunity test under the action of multiple interference sources. How to provide a reliable and easy-to-operate temperature and humidity adjustment device has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] In view of the above existing problems, the present invention is proposed.

[0006] Therefore, the present invention provides a temperature and humidity adjustment device for multi-physical field coupling testing of electronic transformers. According to the actual needs of multi-physical field coupling testing of electronic transformers, multiple physical fields are effectively integrated into the same box. While effectively providing the temperature and humidity environment required for the test, the test operation process is simplified, the test standards are standardized, and the accuracy of the test results is effectively improved.

[0007] In order to solve the above technical problems, the present invention provides the following technical solution: a temperature and humidity adjustment device for multi-physical field coupling test of an electronic transformer, comprising:

[0008] The temperature and humidity adjustment device comprises a box body, and the upper part of the box body is provided with an isolation chamber and a temperature and humidity adjustment chamber which are independent of each other;

[0009] The side of the isolation room is provided with isolation facilities to completely isolate the isolation room from the temperature and humidity adjustment room;

[0010] The isolation chamber is provided with multi-layer brackets from top to bottom for placing the electrical fast transient pulse group generator, the surge generator and the radio frequency inductive conduction disturbance generator respectively;

[0011] The first coupling-decoupling network, the second coupling-decoupling network, and the third coupling-decoupling network are respectively placed from top to bottom on the side of the temperature and humidity regulating chamber adjacent to the isolation chamber; an insulating support is provided on the side of the temperature and humidity regulating chamber away from the isolation chamber for placing the device under test;

[0012] The electrical fast transient pulse group generator is connected to the first coupling and decoupling network through a coaxial cable, and the generated electrical fast transient pulse group disturbance voltage is output to the first coupling and decoupling network through the coaxial cable, and is directly coupled to the working power supply of the device under test through the first coupling and decoupling network; the surge generator is connected to the second coupling and decoupling network through a coaxial cable, and the generated surge pulse is output to the second coupling and decoupling network through the coaxial cable, and is directly coupled to the working power supply of the device under test through the second coupling and decoupling network; the radio frequency inductive conducted disturbance generator is connected to the third coupling and decoupling network through a coaxial cable, and the generated conducted disturbance voltage is output to the third coupling and decoupling network through the coaxial cable, and is directly coupled to the working power supply of the device under test through the third coupling and decoupling network;

[0013] The lower half of the box is provided with a power module and an online monitoring system; the power module is used to provide the working voltage required for the multi-physical field coupling test of the electronic transformer; the online monitoring system includes a voltage sensor, a current sensor, a temperature and humidity control module and a host computer; the temperature and humidity control module is used to adjust the temperature and humidity in the temperature and humidity control room; the voltage sensor and the current sensor are used to monitor the protection current error, measurement error current, voltage amplitude error and voltage phase error respectively during the voltage application process, and send the monitoring results to the host computer to judge whether the tested equipment is damaged, communication is interrupted, packet is lost, quality output changes and output waveform distortion occurs.

[0014] As a preferred solution of the temperature and humidity adjustment device for multi-physical field coupling testing of an electronic mutual inductor described in the present invention, heat dissipation blades are provided on the outer panel of the lower half of the box.

[0015] As a preferred solution of the temperature and humidity adjustment device for multi-physical field coupling testing of an electronic mutual inductor described in the present invention, a door is provided on the upper half of the box body, and a transparent observation window is installed in the middle of the door.

[0016] As a preferred solution of the temperature and humidity adjustment device for multi-physical field coupling testing of an electronic mutual inductor described in the present invention, a control panel is provided on the box.

[0017] As a preferred solution of the temperature and humidity adjustment device for multi-physical field coupling test of the electronic mutual inductor described in the present invention, wherein: the temperature and humidity control module includes a system time setting unit, a clock unit, a temperature and humidity setting unit, an EEPROM storage unit, a real-time monitoring interface, a temperature and humidity sensor and a temperature and humidity control unit;

[0018] The real-time monitoring interface is respectively connected to the clock unit, the EEPROM storage unit, the temperature and humidity sensor and the temperature and humidity control unit; the system time setting unit is respectively connected to the temperature and humidity setting unit and the clock; the temperature and humidity setting unit is respectively connected to the EEPROM storage unit and the real-time monitoring interface; after the temperature and humidity setting unit sets the temperature and humidity values, the set values ​​are sent to the EPROM storage unit for storage, and the temperature and humidity set during power failure are restored by reading the EPROM storage unit in the event of abnormal power failure; the temperature and humidity control unit stabilizes the temperature and humidity at the set values ​​using a PID algorithm and uploads them to the real-time monitoring interface.

[0019] As a preferred solution of the temperature and humidity adjustment device for multi-physical field coupling test of electronic mutual inductor described in the present invention, wherein: the temperature and humidity control unit includes a temperature and humidity acquisition module;

[0020] The temperature and humidity acquisition module is connected to the temperature and humidity sensor, and receives the temperature and humidity values ​​sent by the temperature and humidity sensor in real time; wherein, when the measured temperature value is received, it is determined whether 4 measurements have been made. If 4 measurements have been made, the maximum temperature value and the minimum temperature value in the 4 sets of measurement data are removed, and the difference between the two middle measured temperature values ​​is compared to see whether it is greater than 10. If so, the measurement count is reset and the measured temperature value is recounted. Otherwise, the average value of the two middle measured temperature values ​​is taken, the temperature sensor capacitance is calculated, and correction is performed according to the calibration value. The actual humidity value is calculated by combining the correction result and the measured humidity value, and the temperature value average value and the actual humidity value are returned.

[0021] As a preferred solution of the temperature and humidity adjustment device for multi-physical field coupling testing of an electronic mutual inductor described in the present invention, wherein: the real-time monitoring interface is displayed through an LCD touch screen.

[0022] Beneficial effects of the present invention: The temperature and humidity adjustment device for multi-physical field coupling testing of electronic transformers of the present invention effectively integrates multiple physical fields into the same box in response to the actual needs of multi-physical field coupling testing of electronic transformers. While effectively providing the temperature and humidity environment required for the test, it simplifies the test operation process, standardizes the test standards, and effectively improves the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 An internal layout diagram of a temperature and humidity adjustment device for multi-physical field coupling testing of an electronic transformer provided by an embodiment of the present invention.

[0025] Figure 2 A physical picture of a temperature and humidity adjustment device for multi-physical field coupling testing of an electronic transformer provided by an embodiment of the present invention.

[0026] Figure 3 A schematic diagram of a temperature and humidity control module of a temperature and humidity adjustment device for multi-physical field coupling testing of an electronic transformer provided by an embodiment of the present invention.

[0027] Figure 4 A control flow chart of a temperature and humidity acquisition subroutine of a temperature and humidity adjustment device for multi-physical field coupling testing of an electronic mutual inductor provided by an embodiment of the present invention.

[0028] Figure 5 A schematic diagram of a program interface for temperature and humidity acquisition of a temperature and humidity adjustment device for multi-physical field coupling testing of an electronic mutual inductor provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0032] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0033] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Example 1, reference Figure 1-Figure 5 , which is the first embodiment of the present invention, provides a temperature and humidity adjustment device for multi-physical field coupling testing of an electronic mutual inductor, comprising:

[0036] See also Figure 1 and Figure 2 The present invention discloses a temperature and humidity adjustment device for multi-physical field coupling testing of an electronic mutual inductor. The temperature and humidity adjustment device comprises a box body, and the upper part of the box body is provided with two independent isolation chambers and a temperature and humidity adjustment chamber.

[0037] The side of the isolation room is provided with isolation facilities so as to completely isolate the isolation room from the temperature and humidity regulating room.

[0038] The present invention tests the corresponding standard electromagnetic interference (electrical fast transient, surge and conducted interference immunity) under different temperatures and humidities. According to the test requirements: the temperature and humidity control room needs to control the temperature (-50℃—+85℃) and humidity (≤95%), and the electromagnetic interference sources include electrical fast transient pulse group immunity higher than level 4, surge immunity higher than level 4 and radio frequency induced conducted interference immunity higher than level 3. There are many electromagnetic interferences in the substation, and the interference sources can be roughly divided into: high-voltage switch operation, lightning strike, system short circuit fault, induced electromagnetic field, etc. The electromagnetic interference sources mainly include three types: electrical fast transient pulse group (EFT / B), surge (Surge), and radio frequency induced conducted interference immunity (CS). Therefore, the isolation chamber is provided with multi-layer brackets from top to bottom for placing the electrical fast transient pulse group generator, surge generator and radio frequency inductive conduction disturbance generator respectively; the first coupling decoupling network, the second coupling decoupling network and the third coupling decoupling network are placed from top to bottom on the side of the temperature and humidity adjustment chamber adjacent to the isolation chamber; the side of the temperature and humidity adjustment chamber away from the isolation chamber is provided with an insulating support for placing the device under test; the electrical fast transient pulse group generator is connected to the first coupling decoupling network through a coaxial cable, and the generated electrical fast transient pulse group disturbance voltage is output through the coaxial cable to the first coupling-decoupling network, and is directly coupled to the working power supply of the device under test through the first coupling-decoupling network; the surge generator is connected to the second coupling-decoupling network through a coaxial cable, and the generated surge pulse is output to the second coupling-decoupling network through the coaxial cable, and is directly coupled to the working power supply of the device under test through the second coupling-decoupling network; the radio frequency inductive conducted disturbance generator is connected to the third coupling-decoupling network through a coaxial cable, and the generated conducted disturbance voltage is output to the third coupling-decoupling network through the coaxial cable, and is directly coupled to the working power supply of the device under test through the third coupling-decoupling network.

[0039] The lower half of the box is provided with a power module and an online monitoring system; the power module is used to provide the working voltage required for the multi-physical field coupling test of the electronic transformer; the online monitoring system includes a voltage sensor, a current sensor, a temperature and humidity control module and a host computer; the temperature and humidity control module is used to adjust the temperature and humidity in the temperature and humidity control room; the voltage sensor and the current sensor are used to monitor the protection current error, measurement error current, voltage amplitude error and voltage phase error respectively during the voltage application process, and send the monitoring results to the host computer to judge whether the tested equipment is damaged, communication is interrupted, packet is lost, quality output changes and output waveform distortion occurs.

[0040] As one embodiment thereof, heat dissipation blades are provided on the outer panel of the lower half of the box body.

[0041] As one embodiment, a door is provided on the upper part of the box body, and a transparent observation window is installed in the middle of the door, so that the user can check the real-time situation in the box body at any time during the test.

[0042] As one embodiment, a control panel is provided on the box to facilitate the user to observe and adjust the test parameters.

[0043] See also Figure 3 , the temperature and humidity control module includes a system time setting unit, a clock unit, a temperature and humidity setting unit, an EEPROM storage unit, a real-time monitoring interface, a temperature and humidity sensor and a temperature and humidity control unit;

[0044] The real-time monitoring interface is respectively connected to the clock unit, the EEPROM storage unit, the temperature and humidity sensor and the temperature and humidity control unit; the system time setting unit is respectively connected to the temperature and humidity setting unit and the clock; the temperature and humidity setting unit is respectively connected to the EEPROM storage unit and the real-time monitoring interface; after the temperature and humidity setting unit sets the temperature and humidity values, the set values ​​are sent to the EPROM storage unit for storage, and the temperature and humidity set during power failure are restored by reading the EPROM storage unit in the event of abnormal power failure; the temperature and humidity control unit stabilizes the temperature and humidity at the set values ​​using a PID algorithm and uploads them to the real-time monitoring interface.

[0045] Furthermore, the temperature and humidity control unit includes a temperature and humidity acquisition module;

[0046] The temperature and humidity acquisition module is connected to the temperature and humidity sensor to receive the temperature and humidity values ​​sent by the temperature and humidity sensor in real time; Figure 4 When receiving the measured temperature value, the temperature and humidity acquisition module determines whether it has been measured 4 times. If it has been measured 4 times, remove the maximum temperature value and the minimum temperature value in the 4 sets of measurement data, and compare whether the difference between the two middle measured temperature values ​​is greater than 10. If it is greater, the measurement count is reset and the measured temperature value is recounted. Otherwise, the average of the two middle measured temperature values ​​is taken, the temperature sensor capacitance is calculated, and correction is performed according to the calibration value. The actual humidity value is calculated by combining the correction result and the measured humidity value, and the temperature value average value and the actual humidity value are returned. Figure 5 The figure is a schematic diagram of the program interface for temperature and humidity collection. Preferably, the real-time monitoring interface is displayed via an LCD touch screen.

[0047] The present invention uses STC12C5A60S2 series single-chip microcomputer as the core operation and processing module of temperature and humidity control, uses electronic sensors to perform digital temperature and humidity measurement, and uses serial port, I2C bus, temperature compensation and other key technologies to form an intelligent temperature and humidity measurement system. The temperature and humidity acquisition module can be divided into temperature measurement circuit, humidity measurement circuit, A / D conversion and filtering circuit, data storage, etc. The devices selected by the main modules of the present invention are: temperature sensor DS18B20, humidity sensor HS1101, control chip STC12C5A69S2, A / D converter ADC0832, clock chip DS12C887, data storage AT24C04, MAX232, integrated timer, etc. In this embodiment, the core processor based on the STC12C5A60S2 series single-chip microcomputer as the hardware platform is selected, and an extended design is carried out on this basis. Data acquisition, storage and uploading to the computer for data processing must be performed through the single-chip microcomputer, and the temperature and humidity of the environment are collected through the temperature and humidity sensor. Then the MCU optimizes the collected data and stores valid data.

[0048] Data acquisition is completed through the single-bus intelligent temperature sensor DS18B20 and the analog humidity sensor HS1101; data processing is mainly completed by the host computer, including data curve display, data storage, data printing and other functions. A variety of bus and protocol technologies are used in the whole system, such as the single-bus technology of the intelligent temperature sensor DS1820, the I2C bus technology of storage expansion, the SPI bus technology of FLASH storage, and the RS232 protocol technology of the connection between the microcontroller and the computer. In order to prevent the distortion of the analog sensor data acquisition, the linear interpolation algorithm is used. In this system, the microcontroller part is programmed in C language, and the computer part is programmed in VC++.

[0049] The program framework design is related to the efficiency of program execution and the readability of the code. If the logical structure of a program is simple and clear, then the program itself is similar to a miniature multi-task system. How to simulate a multi-task system from the perspective of program structure is to use SWITCH in C language to achieve task switching. In simple terms, it is to achieve parallel processing of the multi-task system through the difference in the specific values ​​of different parameters of the switch statement in the While dead loop of the main function. Of course, the function of timed interruption is also indispensable. The program code of the temperature and humidity control system is divided into three areas and a delay dividing line.

[0050] Area 1: initial_myself function: It is specifically used to initialize the microcontroller's own registers and some peripheral output devices that require fast response speed, to prevent the peripheral devices from malfunctioning due to unstable output IO level status right after power-on.

[0051] Delay dividing line: delay_long function: The long delay function is the dividing line between the first and second areas. The delay time is generally between 0.3 seconds and 2 seconds, and the purpose is to wait for the peripheral chips and modules to be powered on and stable. For example, AT24C04 memory chip, DS18B20 temperature sensor, etc. These chips have a common feature, which is that they usually communicate with the microcontroller through serial or parallel ports, and do not require immediate processing after power-on.

[0052] Area 2: initial_peripheral function: specifically used to initialize peripheral chips and modules that do not require immediate processing upon power-up, such as the AT24C04 memory chip.

[0053] Area 3: while(1) loop function: specifically used to write non-interrupt applications that are scanned by the loop.

[0054] In the temperature and humidity test, the physical and electrical properties of different materials under relatively harsh temperature and humidity environments are verified, and the data obtained are used as the basis to ensure the reliable transmission of electromagnetic disturbance simulation waveforms under such conditions. The temperature and humidity adjustment device for the multi-physical field coupling test of the electronic transformer of the present invention effectively integrates multiple physical fields into the same box in response to the actual needs of the multi-physical field coupling test of the electronic transformer, and simplifies the test operation process, standardizes the test standards, and effectively improves the accuracy of the test results while effectively providing the temperature and humidity environment required for the test.

[0055] 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.

[0056] Example 2

[0057] The second embodiment of the present invention is different from the previous embodiment in that:

[0058] 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.

[0059] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes 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 generate 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.

[0060] 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 comprising 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.

[0061] 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.

[0062] Although the preferred embodiments of the present application 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 falling within the scope of the present application.

[0063] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A temperature and humidity adjustment device for multi-physical field coupling testing of an electronic mutual inductor, characterized in that: The temperature and humidity adjustment device comprises a box body, and the upper part of the box body is provided with an isolation chamber and a temperature and humidity adjustment chamber which are independent of each other; The side of the isolation room is provided with isolation facilities to completely isolate the isolation room from the temperature and humidity adjustment room; The isolation chamber is provided with multi-layer brackets from top to bottom for placing the electrical fast transient pulse group generator, the surge generator and the radio frequency inductive conduction disturbance generator respectively; The first coupling-decoupling network, the second coupling-decoupling network, and the third coupling-decoupling network are respectively placed from top to bottom on the side of the temperature and humidity regulating chamber adjacent to the isolation chamber; an insulating support is provided on the side of the temperature and humidity regulating chamber away from the isolation chamber for placing the device under test; The electrical fast transient pulse group generator is connected to the first coupling and decoupling network through a coaxial cable, and the generated electrical fast transient pulse group disturbance voltage is output to the first coupling and decoupling network through the coaxial cable, and is directly coupled to the working power supply of the device under test through the first coupling and decoupling network; the surge generator is connected to the second coupling and decoupling network through a coaxial cable, and the generated surge pulse is output to the second coupling and decoupling network through the coaxial cable, and is directly coupled to the working power supply of the device under test through the second coupling and decoupling network; the radio frequency inductive conducted disturbance generator is connected to the third coupling and decoupling network through a coaxial cable, and the generated conducted disturbance voltage is output to the third coupling and decoupling network through the coaxial cable, and is directly coupled to the working power supply of the device under test through the third coupling and decoupling network; The lower part of the box is provided with a power module and an online monitoring system; the power module is used to provide the working voltage required for the multi-physical field coupling test of the electronic transformer; the online monitoring system includes a voltage sensor, a current sensor, a temperature and humidity control module and a host computer; The temperature and humidity control module is used to adjust the temperature and humidity in the temperature and humidity conditioning room; the voltage sensor and current sensor are used to monitor the protection current error, measurement error current, voltage amplitude error and voltage phase error respectively during the voltage application process, and send the monitoring results to the host computer to determine whether the tested equipment is damaged, communication is interrupted, packet is lost, quality output is changed and output waveform is distorted.

2. The temperature and humidity adjustment device for multi-physical field coupling test of an electronic mutual inductor according to claim 1, characterized in that: The outer panel of the lower half of the box body is provided with heat dissipation blades.

3. The temperature and humidity adjustment device for multi-physical field coupling test of an electronic mutual inductor according to claim 2, characterized in that: The upper part of the box body is provided with a box door, and the middle part of the box door is provided with a transparent observation window.

4. The temperature and humidity adjustment device for multi-physical field coupling test of an electronic mutual inductor according to claim 3, characterized in that: A control panel is arranged on the box body.

5. The temperature and humidity adjustment device for multi-physical field coupling test of an electronic mutual inductor according to claim 4, characterized in that: The temperature and humidity control module includes a system time setting unit, a clock unit, a temperature and humidity setting unit, an EEPROM storage unit, a real-time monitoring interface, a temperature and humidity sensor, and a temperature and humidity control unit; The real-time monitoring interface is respectively connected to the clock unit, the EEPROM storage unit, the temperature and humidity sensor and the temperature and humidity control unit; the system time setting unit is respectively connected to the temperature and humidity setting unit and the clock; the temperature and humidity setting unit is respectively connected to the EEPROM storage unit and the real-time monitoring interface; after the temperature and humidity setting unit sets the temperature and humidity values, the set values ​​are sent to the EPROM storage unit for storage, and the temperature and humidity set during power failure are restored by reading the EPROM storage unit in the event of abnormal power failure; the temperature and humidity control unit stabilizes the temperature and humidity at the set values ​​using a PID algorithm and uploads them to the real-time monitoring interface.

6. The temperature and humidity adjustment device for multi-physical field coupling test of an electronic mutual inductor according to claim 5, characterized in that: The temperature and humidity control unit includes a temperature and humidity acquisition module; The temperature and humidity acquisition module is connected to the temperature and humidity sensor, and receives the temperature and humidity values ​​sent by the temperature and humidity sensor in real time; wherein, when the measured temperature value is received, it is determined whether 4 measurements have been made. If 4 measurements have been made, the maximum temperature value and the minimum temperature value in the 4 sets of measurement data are removed, and the difference between the two middle measured temperature values ​​is compared to see whether it is greater than 10. If so, the measurement count is reset and the measured temperature value is recounted. Otherwise, the average value of the two middle measured temperature values ​​is taken, the temperature sensor capacitance is calculated, and correction is performed according to the calibration value. The actual humidity value is calculated by combining the correction result and the measured humidity value, and the temperature value average value and the actual humidity value are returned.

7. The temperature and humidity adjustment device for multi-physical field coupling testing of an electronic mutual inductor according to claim 6, characterized in that: The real-time monitoring interface is displayed through an LCD touch screen.

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