Electric railway traction substation mobile oscillograph

Abstract

The application relates to a mobile recording wave device of an electrified railway traction substation. The mobile recording wave device of the electrified railway traction substation comprises an analog quantity input module, a man-machine interaction panel, a mainboard, a machine box body and a handle, wherein the mobile recording wave device of the electrified railway traction substation assembled with the movable handle solves the problem that a traditional power quality monitoring system or device must be fixedly installed, and facilitates carrying and mobile use by a user; and the limiting component limits the handle to move within the range of not shielding the first surface, so that the staff can view the man-machine interaction panel without the handle shielding.

Description

Technical Field

[0001] This application relates to the field of waveform recording technology for electrified railway traction substations, and in particular to a mobile waveform recording device for electrified railway traction substations. Background Technology

[0002] Electrified railway traction substations are equipped with power quality monitoring systems or devices. These systems or devices monitor power quality parameters such as harmonics and negative sequence on the incoming power supply side of the traction substation to observe and analyze the impact of electrified railway loads on the power grid's power quality. Currently, the fixed power quality monitoring systems or devices installed on the incoming side of electrified railway traction substations are insufficient to meet the needs of mobile monitoring of load parameters at each traction substation. Utility Model Content

[0003] Therefore, it is necessary to provide a portable mobile waveform recording device for electrified railway traction substations.

[0004] A mobile waveform recording device for traction substations of electrified railways is provided, comprising:

[0005] The analog input module has multiple input terminals used to receive external voltage and current signals from the electrified railway traction substation.

[0006] Human-computer interaction panel;

[0007] The motherboard's input terminals are connected to the output terminals of the analog input modules, and the motherboard's output terminals are connected to the human-machine interface panel.

[0008] The chassis body has a storage space for housing analog input modules and the motherboard; a human-machine interface panel is embedded on the first surface of the chassis body; bolt holes are provided on the two symmetrical surfaces of the chassis body adjacent to the first surface.

[0009] The handle has movable buckles at both ends; the movable buckles are movably connected to the bolt holes one by one.

[0010] The chassis body has a limiting component on the surface with bolt holes. The limiting component is used to restrict the movement of the handle within the range that does not obstruct the first surface.

[0011] In one embodiment, the range of not obstructing the first surface includes a range of rotation from 45° toward the first surface about a preset axis to 150° away from the first surface about a preset axis; wherein the preset axis is the connecting line of the two bolt holes.

[0012] In one embodiment, the analog input module includes:

[0013] The input terminals of the multi-channel voltage conditioning circuit are connected one-to-one with the multi-channel voltage jack terminals fixed on the human-machine interface panel, and the output terminals of the multi-channel voltage conditioning circuit are connected to the motherboard.

[0014] The multi-channel current conditioning circuit has its input terminals connected one-to-one with the multi-channel current jack terminals fixed on the human-machine interface panel, and its output terminals connected to the motherboard.

[0015] In one embodiment, the aforementioned mobile waveform recording device for electrified railway traction substations further includes:

[0016] The clamp-on current sensor has its secondary side connected to the input terminals of both the multi-channel voltage conditioning circuit and the multi-channel current conditioning circuit.

[0017] In one embodiment, the motherboard includes:

[0018] The data acquisition module has its input terminal connected to the output terminal of the analog input module.

[0019] The data storage module has its input end connected to the output end of the data acquisition module.

[0020] The data analysis module has its input end connected to the output end of the data storage module, and its output end connected to the input end of the human-computer interaction panel.

[0021] In one embodiment, the motherboard further includes:

[0022] The clock synchronization module has its output connected to the data acquisition module, data storage module, and data analysis module, respectively, while its input is used to receive external clock signals.

[0023] In one embodiment, the human-computer interaction panel further includes:

[0024] The clock synchronization input terminal is used to receive external clock signals, and its output terminal is connected to the input terminal of the clock synchronization module.

[0025] In one embodiment, the human-computer interaction panel further includes:

[0026] The communication network port connects to the output of the data analysis module.

[0027] In one embodiment, the human-computer interaction panel further includes:

[0028] The status indicator module has its input terminals connected to the output terminals of the motherboard.

[0029] In one embodiment, the aforementioned mobile waveform recording device for electrified railway traction substations further includes:

[0030] The power supply module has its output terminals connected to the power supply terminals of the analog input module, the human-machine interface panel, and the motherboard, respectively; the input terminals of the power supply module are used to connect to an external power source.

[0031] The aforementioned mobile waveform recording device for electrified railway traction substations includes an analog input module, a human-machine interface panel, a main board, a chassis body, and a handle. The mobile waveform recording device for electrified railway traction substations equipped with a movable handle solves the problem that traditional power quality monitoring systems or devices must be fixedly installed, making it convenient for users to carry and move. Furthermore, the limiting component restricts the movement of the handle to a range that does not obstruct the first surface, allowing staff to view the human-machine interface panel without the handle obstructing the view. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 One of the structural block diagrams of a mobile waveform recording device for an electrified railway traction substation according to an embodiment;

[0034] Figure 2 One of the schematic diagrams of the chassis of a mobile waveform recording device for an electrified railway traction substation according to an embodiment;

[0035] Figure 3 A schematic diagram of the handle of a mobile waveform recording device for an electrified railway traction substation according to an embodiment;

[0036] Figure 4 The second structural block diagram of a mobile waveform recording device for an electrified railway traction substation is shown in one embodiment.

[0037] Figure 5 This is a second schematic diagram of the chassis of a mobile waveform recording device for an electrified railway traction substation, as shown in one embodiment. Detailed Implementation

[0038] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0040] It is understood that the terms "first," "second," etc., used herein may be used to describe various elements or components, but these elements or components are not limited by these terms. These terms are only used to distinguish the first element or component from another element or component. For example, without departing from the scope of this application, the first surface may be referred to as the second surface, and similarly, the second surface may be referred to as the first surface. Both the first surface and the second surface are surfaces, but they are not the same surface.

[0041] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0042] It is understandable that "multiple" refers to two or more. "At least part of an element" refers to part or all of an element.

[0043] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0044] In one exemplary embodiment, such as Figure 1 As shown, a mobile waveform recording device 10 for an electrified railway traction substation is provided, including: an analog input module 102, a human-machine interface panel 104, a main board 106, a chassis body 108, and a handle 110.

[0045] The analog input module 102 has multiple input terminals used to receive external voltage signals and external current signals from the electrified railway traction substation.

[0046] The main function of an electrified railway traction substation is to convert the high-voltage AC power from the power system into a voltage suitable for use by railway electric locomotives. For example, this voltage can be a single-phase AC voltage. External voltage and current signals originate from the incoming side of the power system. Analyzing these signals allows for monitoring power quality, protecting equipment, and controlling the operation of traction transformers.

[0047] The input terminals of the motherboard 106 are connected to the output terminals of the analog input module 102, and the output terminals of the motherboard 106 are connected to the human-machine interface panel 104.

[0048] The motherboard 106 can analyze and process the received external voltage and current signals from the electrified railway traction substation, and send the processing results to the human-machine interface panel 104 for staff to view in real time.

[0049] like Figure 2 As shown, the chassis body 108 has a accommodating space for placing the analog input module 102 and the motherboard 106; a human-machine interface panel 104 is embedded on the first surface of the chassis body 108; bolt holes 1082 are provided on the two symmetrical surfaces of the chassis body 108 adjacent to the first surface.

[0050] The size of the chassis 108 can be designed according to the size of the analog input module 102 and the motherboard 106. Generally, the smaller the chassis 108 is designed, the more portable the mobile waveform recording device 10 of the electrified railway traction substation will be.

[0051] like Figure 3 As shown, both ends of the handle 110 have movable buckles 1102; the movable buckles 1102 are movably connected to the bolt holes 1082 one by one.

[0052] The movable handle 110 can improve the portability of the mobile waveform recording device 10 for electrified railway traction substations when staff are carrying it.

[0053] The chassis body 108 has a limiting component on the surface with bolt holes 1082. The limiting component is used to restrict the handle 110 from moving within a range that does not obstruct the first surface.

[0054] The first surface is where the human-machine interface panel 104 is located. The limiting component restricts the handle 110 to move within a range that does not obstruct the first surface, meaning that the handle 110 cannot visually obstruct the human-machine interface panel 104 under any circumstances. Furthermore, even if the limiting component ages, becomes stuck, or even jams, the handle 110 will still not be obstructed from the area where the operator can observe the human-machine interface panel 104.

[0055] The aforementioned mobile waveform recording device 10 for electrified railway traction substations includes an analog input module 102, a human-machine interface panel 104, a main board 106, a chassis body 108, and a handle 110. The mobile waveform recording device 10 for electrified railway traction substations equipped with a movable handle 110 solves the problem that traditional power quality monitoring systems or devices must be fixedly installed, making it convenient for users to carry and move. Furthermore, the limiting component restricts the handle 110 to move within a range that does not obstruct the first surface, allowing staff to view the human-machine interface panel 104 without the handle 110 obstructing the view.

[0056] In an exemplary embodiment, the range of not obstructing the first surface includes a range of rotation from 45° toward the first surface about a preset axis to 150° away from the first surface about a preset axis; wherein the preset axis is the connecting line of the two bolt holes 1082.

[0057] When the handle 110 can rotate 45° around a preset axis towards the first surface, it ensures that the handle 110 maintains its maximum range of motion without obstructing the human-machine interface panel 104. When the handle 110 can rotate 150° around a preset axis away from the first surface, it can accommodate various static placement methods. For example, the mobile waveform recording device 10 for electrified railway traction substations can be placed on a shelf, chair, table, or other structure where it can be placed. In this case, the handle 110 naturally hangs down to the side opposite the first surface, which is particularly suitable for spaces with limited height where the mobile waveform recording device 10 for electrified railway traction substations can be placed. Furthermore, by placing the mobile waveform recording device 10 for electrified railway traction substations on a structure where it can be placed, workers can view the human-machine interface panel 104 at eye level, improving work convenience.

[0058] In one exemplary embodiment, such as Figure 5 As shown, support feet 112 can be set at the four corners of the second surface; the second surface is the surface opposite to the first surface.

[0059] When workers are working at height or standing, the first side can be placed facing upwards so that workers can directly view the human-machine interface panel 104 while looking down. At this time, the second side is close to the ground, and the support foot 112 can prevent wear on the second side when it is close to the ground.

[0060] In one embodiment, the support foot 112 is made of hard plastic.

[0061] In one embodiment, the bottom surface may be provided with at least one soft rubber strip, and the bottom surface is the surface that is adjacent to both the first surface and the second surface and close to the ground.

[0062] The soft rubber strips can increase friction, thereby improving the stability of the mobile waveform recording device 10 in the traction substation of electrified railways. Preferably, two soft rubber strips can be arranged on the bottom surface.

[0063] In one exemplary embodiment, such as Figure 4 and Figure 5 As shown, the analog input module 102 includes a multi-channel voltage conditioning circuit 1022 and a multi-channel current conditioning circuit 1024.

[0064] The input terminals of the multi-channel voltage conditioning circuit 1022 are connected one-to-one with the multi-channel voltage jack terminals 1041 fixed on the human-machine interface panel 104, and the output terminals of the multi-channel voltage conditioning circuit 1022 are connected to the motherboard 106.

[0065] The multi-channel voltage conditioning circuit 1022 can be a 5-channel voltage converter. The 5-channel voltage converter is connected to 5 pairs of external AC voltage terminals through voltage wiring to obtain external AC voltage signals.

[0066] The input terminals of the multi-channel current conditioning circuit 1024 are connected one-to-one with the multi-channel current jack terminals 1042 fixed on the human-machine interface panel 104, and the output terminals of the multi-channel current conditioning circuit 1024 are connected to the motherboard 106.

[0067] The multi-channel current conditioning circuit 1024 can be a 7-channel current conditioning circuit. After the 7-channel current conditioning circuit is connected to the 7 current jack terminals of the human-machine interface panel 104, it is connected to the output terminal of the inductive current clamp to obtain the external AC current signal.

[0068] By setting an appropriate number of multi-channel voltage conditioning circuits 1022 and multi-channel current conditioning circuits 1024, a reasonable number of voltage and current quantities can be obtained, which can meet the needs of analog quantity recording related to traction substations and relay protection. The synchronous high-precision recording of multi-channel voltage conditioning circuits 1022 and multi-channel current conditioning circuits 1024 solves the problem that traditional handheld clamp meters can only record single electrical quantities and have small data storage space and short time, thus improving the performance of the mobile waveform recording device 10 in electrified railway traction substations.

[0069] In one exemplary embodiment, such as Figure 4 As shown, the aforementioned mobile waveform recording device 10 for electrified railway traction substations also includes: a clamp-on current sensor 114.

[0070] The secondary side of the clamp current sensor 114 is connected to the input terminal of the multi-channel voltage conditioning circuit 1022 and the input terminal of the multi-channel current conditioning circuit 1024, respectively.

[0071] The clamp current sensor 114 is a device for measuring current, which enables non-contact current measurement.

[0072] The secondary side of the clamp current sensor 114 can be connected to the input terminal of the multi-channel voltage conditioning circuit 1022 through the multi-channel voltage jack terminal 1041 on the human-machine interface panel 104. Correspondingly, the secondary side of the clamp current sensor 114 can be connected to the input terminal of the multi-channel current conditioning circuit 1024 through the multi-channel current jack terminal 1042 on the human-machine interface panel 104.

[0073] Furthermore, the clamp-on current sensor 114 is clamped onto the secondary circuit of the current transformer at the installation location of the relay protection device. The output of the clamp-on current sensor 114 is inserted into the multi-channel current socket terminal 1042 on the human-machine interface module panel through two banana-head terminals. The multi-channel current conditioning circuit 1024 is directly connected to the secondary output of the clamp-on current sensor 114 through the multi-channel current socket terminal 1042.

[0074] In one embodiment, the clamp current sensor 114 may be a high-precision clamp current sensor 114 of model ES009, and its supplier may be Guangzhou Zhengneng Electronic Technology Co., Ltd.

[0075] In one exemplary embodiment, such as Figure 4 As shown, the motherboard 106 includes: a data acquisition module 1062, a data storage module 1064, and a data analysis module 1066.

[0076] The input terminal of the data acquisition module 1062 is connected to the output terminal of the analog input module 102.

[0077] Among them, the sampling frequency of the data acquisition module 1062 can be up to 256 points / cycle.

[0078] The input terminal of the data storage module 1064 is connected to the output terminal of the data acquisition module 1062. The data storage module 1064 can be a large-capacity hard disk to store the waveform recording data.

[0079] The input terminal of the data analysis module 1066 is connected to the output terminal of the data storage module 1064, and the output terminal of the data analysis module 1066 is connected to the input terminal of the human-computer interaction panel 104.

[0080] In addition to calculating basic parameters such as the effective value of external voltage signals and the effective value of external current signals, the data analysis module 1066 can also calculate parameters such as current increment and comprehensive harmonics for feeder protection in real time.

[0081] The data acquisition module 1062 receives external voltage signals transmitted from the multi-channel voltage conditioning circuit 1022 in the analog input module 102, and external current signals transmitted from the multi-channel current conditioning circuit 1024 in the analog input module 102. It then transmits these external voltage and current signals to the data storage module 1064, which stores them. The data analysis module 1066 retrieves the external voltage and current signals from the data storage module 1064 for analysis and outputs the analysis results to the human-machine interface panel 104 for viewing by staff.

[0082] In one embodiment, the motherboard 106 further includes a digital-to-analog converter chip.

[0083] The input terminal of the digital-to-analog converter chip is connected to the output terminal of the analog input module 102, and the output terminal of the digital-to-analog converter chip is connected to the data acquisition module 1062.

[0084] The digital-to-analog converter chip converts the received external voltage and current signals into corresponding digital signals, and then transmits the corresponding digital signals to the data acquisition module 1062 to reduce data distortion.

[0085] Furthermore, the aforementioned motherboard 106 can also be configured with various auxiliary components to improve the performance of the mobile waveform recording device 10 in the electrified railway traction substation.

[0086] In one embodiment, each module in the motherboard 106 is electrically connected to each module in the analog input module 102 via cables.

[0087] In one exemplary embodiment, such as Figure 4 As shown, the motherboard 106 also includes a clock synchronization module 1068.

[0088] The output of the clock synchronization module 1068 is connected to the data acquisition module 1062, the data storage module 1064 and the data analysis module 1066 respectively, and the input of the clock synchronization module 1068 is used to receive external clock signals.

[0089] When clamp-on current sensors 114 simultaneously monitor different feeders, synchronized clocks enable accurate analysis of correlated events. Clock synchronization during the storage phase ensures that data is correctly archived in chronological order, facilitating subsequent retrieval and correlation. In long-term trend analysis, time-aligned data is essential to accurately reflect the changing trends in the operating status of electrified railway traction substations.

[0090] In one exemplary embodiment, such as Figure 5 As shown, the human-computer interaction panel 104 also includes a clock synchronization input terminal 1043.

[0091] The input terminal of the clock synchronization input terminal 1043 is used to receive an external clock signal, and the output terminal of the clock synchronization input terminal 1043 is connected to the input terminal of the clock synchronization module 1068.

[0092] Receiving an external clock signal via the clock synchronization input terminal 1043 helps to improve the ease of wiring.

[0093] In one embodiment, such as Figure 4 As shown, the human-computer interaction panel 104 also includes a touch-sensitive LCD screen 1044.

[0094] like Figure 5 As shown, the clock synchronization input terminal 1043 can be arranged around the touch screen 1044, so that the visual center of the human-machine interaction panel 104 is the touch screen 1044.

[0095] Based on the touch-screen LCD 1044, staff can view the RMS values ​​of analog quantities, modify parameters, and view parameters such as current increment and comprehensive harmonics used for feeder protection.

[0096] In one exemplary embodiment, such as Figure 4 and Figure 5 As shown, the human-computer interaction panel 104 also includes a communication network port 1045.

[0097] The communication network port 1045 connects to the output of the data analysis module 1066.

[0098] The data analysis results determined by the data analysis module 1066 can be sent to the staff's terminal via the communication network port 1045 to improve the convenience and timeliness of the staff in viewing the data analysis results. For example, the communication network port 1045 can be used to connect to an external monitoring computer, which can then connect to the mobile waveform recording device 10 of the electrified railway traction substation, enabling control of the device and extraction of waveform recording data. The communication module configured on the motherboard 106 can be an Ethernet communication unit.

[0099] In one exemplary embodiment, such as Figure 5 As shown, the human-computer interaction panel 104 also includes a status indicator module 1046.

[0100] The input terminal of the status indicator module 1046 is connected to the output terminal of the motherboard 106.

[0101] The status indicator module 1046 may include multiple LEDs, and different LEDs are lit up in different working states of the mobile waveform recording device 10 in the electrified railway traction substation.

[0102] For example, the status indicator module 1046 includes five status indicator lights: power indicator light, running indicator light, waveform recording indicator light, alarm indicator light, and clock indicator light.

[0103] When the mobile waveform recorder 10 of the electrified railway traction substation is powered on, the power indicator light is illuminated; when the mobile waveform recorder 10 of the electrified railway traction substation is in normal operation, the operation indicator light is illuminated; when the mobile waveform recorder 10 of the electrified railway traction substation is recording waveforms, the waveform recording indicator light is illuminated; when the mobile waveform recorder 10 of the electrified railway traction substation experiences data anomalies, the alarm indicator light is illuminated; when the mobile waveform recorder 10 of the electrified railway traction substation is synchronizing its clock, the clock indicator light is illuminated.

[0104] In one embodiment, such as Figure 5 As shown, the human-computer interaction panel 104 also includes an antenna interface 1047.

[0105] The input terminal of antenna interface 1047 is used to receive an external clock signal, and the output terminal of antenna interface 1047 is connected to the input terminal of clock synchronization module 1068. Antenna interface 1047 is connected to an external antenna to receive an external clock signal.

[0106] In an exemplary embodiment, the mobile waveform recording device 10 for electrified railway traction substations further includes a power supply module 116.

[0107] The output terminals of the power module 116 are respectively connected to the power terminals of the analog input module 102, the human-machine interface panel 104, and the motherboard 106; the input terminals of the power module 116 are used to connect to an external power source.

[0108] The power supply module 116 provides power to each module in the analog input module 102, each module in the human-machine interface panel 104, and each module in the motherboard 106.

[0109] In one embodiment, such as Figure 5 As shown, the human-computer interaction panel 104 also includes a three-hole AC power input port 1048.

[0110] The input terminal of the three-hole AC power input port 1048 is used to connect to an external power source, and the output terminal of the three-hole AC power input port 1048 is connected to the input terminal of the power module 116.

[0111] In one embodiment, a circuit backplate can be configured at the rear of the chassis body 108. The power module 116 can be fixed to the circuit backplate with bolts. The motherboard 106 and the analog input module 102 can be fixed to the bottom of the chassis with bolts and connected to the circuit backplate through electrical terminals.

[0112] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0113] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0114] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A mobile waveform recording device for an electrified railway traction substation, characterized in that, include: An analog input module, wherein multiple input terminals of the analog input module are respectively used to receive external voltage signals and external current signals from the electrified railway traction substation; Human-computer interaction panel; The motherboard has its input terminals connected to the output terminals of the analog input module, and its output terminals connected to the human-machine interface panel. The chassis body has an accommodating space for housing the analog input module and the motherboard; the human-machine interface panel is embedded on the first surface of the chassis body; bolt holes are provided on the two symmetrical surfaces of the chassis body adjacent to the first surface. The handle has movable buckles at both ends; the movable buckles are movably connected to the bolt holes one by one. The chassis body is provided with a limiting component on the surface where the bolt holes are located. The limiting component is used to restrict the handle from moving within a range that does not obstruct the first surface.

2. The mobile waveform recording device for electrified railway traction substations according to claim 1, characterized in that, The range that does not obstruct the first surface includes a range from rotating 45° toward the first surface about a preset axis to rotating 150° away from the first surface about a preset axis; wherein, the preset axis is the connecting line of the two bolt holes.

3. The mobile waveform recording device for electrified railway traction substations according to claim 1, characterized in that, The analog input module includes: A multi-channel voltage conditioning circuit, wherein the input terminal of the multi-channel voltage conditioning circuit is connected one-to-one with the multi-channel voltage socket terminals fixed on the human-machine interface panel, and the output terminal of the multi-channel voltage conditioning circuit is connected to the motherboard. A multi-channel current conditioning circuit is provided, wherein the input terminal of the multi-channel current conditioning circuit is connected to the multi-channel current jack terminal fixed on the human-machine interface panel, and the output terminal of the multi-channel current conditioning circuit is connected to the motherboard.

4. The mobile waveform recording device for electrified railway traction substations according to claim 3, characterized in that, Also includes: A clamp-on current sensor, the secondary side of which is connected to the input terminal of the multi-channel voltage conditioning circuit and the input terminal of the multi-channel current conditioning circuit, respectively.

5. The mobile waveform recording device for electrified railway traction substations according to claim 1, characterized in that, The motherboard includes: A data acquisition module, wherein the input terminal of the data acquisition module is connected to the output terminal of the analog input module; A data storage module, wherein the input end of the data storage module is connected to the output end of the data acquisition module; The data analysis module has its input end connected to the output end of the data storage module, and its output end connected to the input end of the human-computer interaction panel.

6. The mobile waveform recording device for electrified railway traction substations according to claim 5, characterized in that, The motherboard also includes: A clock synchronization module is provided, the output of which is connected to the data acquisition module, the data storage module, and the data analysis module, respectively, and the input of which is used to receive external clock signals.

7. The mobile waveform recording device for electrified railway traction substations according to claim 6, characterized in that, The human-computer interaction panel also includes: A clock synchronization input terminal is provided, the input of which is used to receive the external clock signal, and the output of which is connected to the input of the clock synchronization module.

8. The mobile waveform recording device for electrified railway traction substations according to claim 6, characterized in that, The human-computer interaction panel also includes: A communication network port, which is connected to the output of the data analysis module.

9. The mobile waveform recording device for electrified railway traction substations according to claim 1, characterized in that, The human-computer interaction panel also includes: A status indicator module, the input of which is connected to the output of the motherboard.

10. The mobile waveform recording device for electrified railway traction substations according to claim 1, characterized in that, Also includes: A power supply module, the output terminals of which are respectively connected to the power supply terminals of the analog input module, the human-machine interface panel, and the motherboard. The input terminal of the power module is used to connect to an external power source.

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