Monitoring structure

Abstract

The utility model relates to a monitoring structure, which is used for monitoring the opening and closing state of a contact of pumped storage switch equipment, and comprises a housing which can be connected to the housing of the pumped storage switch equipment; the camera unit can collect an image of a contact of the pumped storage switchgear and convert the image into an electric signal; the circuit element is arranged in the containing cavity and connected to the camera shooting unit, the circuit element comprises a control module and a signal processing module, and the signal processing module is used for processing electric signals of the camera shooting unit and transmitting the electric signals to external equipment. The control module can control the power-on state of the monitoring structure and the signal transmission state of the signal processing module. The image of the contact of the pumped storage switchgear is acquired through the camera unit, and is transmitted to the external equipment through the signal processing module, so that the operation state of the pumped storage switchgear can be timely and effectively acquired, and the monitoring efficiency of the pumped storage switchgear is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pumped storage power stations, in particular to a monitoring structure for monitoring the contact opening and closing state of a pumped storage switch device. BACKGROUND

[0002] With the rapid development of new energy, energy storage power stations can store, convert and release recyclable electric energy through electrochemical cells or electromagnetic energy storage media, and pumped storage power stations are a mature, long-life and stable operation type of energy storage power station.

[0003] As the core equipment of pumped storage power stations, pumped storage switch devices have the characteristics of large working current, frequent operation and large electromagnetic interference. Correspondingly, whether the switch state of the pumped storage switch is normal will affect the safe operation of the entire power station.

[0004] In related technologies, the operating state of the pumped storage switch device is often obtained by manual inspection, but this method has the problems of low efficiency and high labor intensity. SUMMARY

[0005] Therefore, it is necessary to provide a monitoring structure to improve the monitoring efficiency of the operating state of the pumped storage switch device.

[0006] The present application provides a monitoring structure for monitoring the contact opening and closing state of a pumped storage switch device, the monitoring structure comprising: a housing, the housing having a receiving cavity formed therein, the housing being connectable to the outer shell of the pumped storage switch device; a camera unit, the camera unit being disposed in the receiving cavity, the camera unit being capable of capturing images of the contacts of the pumped storage switch device and converting them into electrical signals; and a circuit element, the circuit element being disposed in the receiving cavity and connected to the camera unit, the circuit element comprising a control module and a signal processing module, the signal processing module being configured to process the electrical signals of the camera unit and transmit them to an external device, and the control module being capable of controlling the power-on state of the monitoring structure and the signal transmission state of the signal processing module.

[0007] The monitoring structure described above captures the images of the contacts of the pumped storage switch device through the camera unit and transmits them to the external device through the signal processing module, so as to effectively obtain the operating state of the pumped storage switch device in real time. The control module controls the power-on state of the monitoring structure and the signal transmission state of the signal processing module, so that the monitoring structure is in a power-off state and stops signal transmission during the opening and closing movement of the contacts, thereby avoiding the electromagnetic interference of the pumped storage switch device on the monitoring structure, improving the accuracy and reliability of the monitoring result, and further improving the monitoring efficiency of the pumped storage switch device.

[0008] In one of the embodiments, the circuit element is further provided with an isolation power module and a video signal isolation module.

[0009] In one of the embodiments, the camera unit comprises a photosensitive element capable of collecting images of the contacts of the pumped storage switching device and converting them into electrical signals transmitted to the signal processing module.

[0010] In one of the embodiments, the camera unit further comprises a light supplementing element arranged apart from the photosensitive element, the light supplementing element being configured to supplement light source for the photosensitive element.

[0011] In one of the embodiments, the light supplementing element is configured in two, the two light supplementing elements being arranged on two sides of the photosensitive element and being in a triangular distribution with the photosensitive element.

[0012] In one of the embodiments, the shell is provided with an observation window on the side facing the pumped storage switching device, and the observation window is provided with a transparent glass element, so that the photosensitive element can collect images of the contacts.

[0013] In one of the embodiments, the observation window is provided with a groove, and the glass element abuts against the groove.

[0014] In one of the embodiments, the monitoring structure further comprises a fixing unit configured to fix the shell to the outer shell of the pumped storage switching device.

[0015] In one of the embodiments, the fixing unit comprises a first fixing element and a second fixing element coaxially arranged with the shell, the first fixing element and the second fixing element being arranged around the shell and abutting against the shell, and the first fixing element being movably connected to the second fixing element, so that the distance between the camera unit and the outer shell of the pumped storage switching device can be adjusted.

[0016] In one of the embodiments, the monitoring structure further comprises a sealing unit, and the sealing unit comprises a first sealing element and a second sealing element coaxially arranged with the shell, the first sealing element being arranged between the first fixing element and the shell, and the second sealing element being arranged between the first fixing element and the outer shell of the pumped storage switching device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the monitoring structure in one of the embodiments of the present application.

[0018] Figure 2 It is a structural cross-sectional view of the monitoring structure in one of the embodiments of the present application.

[0019] Figure 3 It is a functional schematic view of the monitoring structure in one of the embodiments of the present application.

[0020] Figure 4 It is a working schematic view of the monitoring structure in one of the embodiments of the present application.

[0021] Figure 5 A schematic view of a camera unit in an embodiment of the present application.

[0022] Figure 6 A partial schematic view of a monitoring structure in an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to those skilled in the art that the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the spirit of the present application, and that the present application is not limited to the specific embodiments disclosed below.

[0024] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0025] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0026] In the present application, unless otherwise specifically defined and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0028] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0029] See Figures 1 to 4 In some embodiments, the monitoring structure 100 is used to monitor the open / close state of the contacts 210 of the pumped-storage switchgear 200, thereby instantly monitoring the operating state of the pumped-storage switchgear 200. In this application, the monitored pumped-storage switchgear 200 includes, but is not limited to, starting switches, drag switches, and busbar sectionalizer switches.

[0030] The monitoring structure 100 includes a housing 10, a camera unit 20, a circuit element 30, and an electrical connector 40. The housing 10 can be connected to the outer casing of a pumped-storage switchgear 200, thereby securing the monitoring structure 100 to the pumped-storage switchgear 200. A cavity is formed within the housing 10 to accommodate the camera unit 20 and the circuit element 30, providing installation space and protection for the camera unit 20 and the circuit element 30. The camera unit 20 can capture images of the contacts 210 of the pumped-storage switchgear 200 and convert them into electrical signals. Based on the images of the contacts 210, the open or closed position of the contacts 210 can be determined, thereby determining the operating status of the pumped-storage switchgear 200. The electrical connector 40 protrudes from the housing 10 and is used to connect to an external power source, thereby energizing the monitoring structure 100 and ensuring its normal operation. Optionally, the electrical connector 40 is an aviation plug.

[0031] The circuit element 30 mainly plays a role of signal transmission and control. The circuit element 30 is electrically connected to the camera unit 20, and the circuit element 30 includes a control module 31 and a signal processing module 32. The signal processing module 32 can process the electrical signal of the camera unit 20 and transmit to an external device, and the control module 31 can control the power-on state of the monitoring structure 100 and the signal transmission state of the signal processing module 32. It should be noted that the control module 31 can also directly control the working state of the monitoring structure 100 by controlling the power-on state of the monitoring structure 100, that is, control the opening and closing of the monitoring structure 100 as a whole.

[0032] The image of the contact 210 of the pumped storage switching device 200 is acquired by the camera unit 20 and transmitted to an external device by the signal processing module 32, so that the running state of the pumped storage switching device 200 can be effectively acquired in real time. By controlling the power-on state of the monitoring structure 100 and the signal transmission state of the signal processing module 32 by the control module 31, the monitoring structure 100 is in a power-off state and stops signal transmission during the opening and closing movement of the contact 210, avoiding the electromagnetic interference of the pumped storage switching device 200 to the monitoring structure 100, improving the accuracy and reliability of the monitoring result, and further improving the monitoring efficiency of the pumped storage switching device 200.

[0033] In some embodiments, the circuit element 30 is also provided with an isolation power supply module 33 and a video signal isolation module 34. The isolation power supply module 33 can realize electrical isolation of the input and output while providing power supply, so that when the contact 210 is opened or closed, the isolation power supply module 33 can reduce the electromagnetic interference of the pumped storage switching device 200, and improve the stability and reliability of the monitoring structure 100. Optionally, the isolation power supply module 33 adopts a DC24V-DC12V isolation power supply module.

[0034] The video signal isolation module 34 realizes the isolation of the video signal, that is, prevents the electrical signal transmission of the contact 210, so that the electrical signal of the camera unit 20 is in an isolated state when the contact 210 is opened or closed, thereby reducing the electromagnetic interference caused by the pumped storage switching device 200 and improving the stability and reliability of the video signal transmission.

[0035] In some embodiments, referring to Figures 2 to 5The camera unit 20 includes a photosensitive element 21 capable of capturing and converting an image of the contact 210 of the pumped storage switching device 200 into an electrical signal and transmitting the electrical signal to the signal processing module 32. The photosensitive element 21 can convert the light image on its light receiving surface into an electrical signal in a corresponding proportional relationship, i.e. the photosensitive element 21 can convert the image of the contact 210 obtained into an electrical signal and transmit the electrical signal to the signal processing module 32, and after processing by the signal processing module 32, the image of the contact 210 of the pumped storage switching device 200 can be displayed in real time by an external device, and the real-time monitoring of the running state of the pumped storage switching device 200 can be realized from the position information of the contact 210 being open or closed. Optionally, the photosensitive element 21 can be a CCD photosensitive element or a CMOS photosensitive element. Feasibly, the photosensitive element 21 is a wide-angle video photosensitive element, which can realize the image capturing of the contact 210 with an angle of greater than 130°.

[0036] Further, the camera unit 20 further includes a light supplement member 22 arranged apart from the photosensitive element 21, the light supplement member 22 is used to supplement light source for the photosensitive element 21, and the additional light source provided by the light supplement member 22 can make the contact 210 bright and clear, so that the photosensitive element 21 can capture a clear image of the contact 210, and the accuracy of the monitoring result is improved.

[0037] In a feasible embodiment, two light supplement members 22 are arranged on both sides of the photosensitive element 21, and the two light supplement members 22 and the photosensitive element 21 are in a triangular distribution. The cooperation of the two light supplement members 22 can realize more uniform light coverage, reduce the generation of shadows in the image of the contact 210, and make the light distribution of the contact 210 more uniform, so as to obtain a clear and complete image of the contact 210.

[0038] Feasibly, the two light supplement members 22 are respectively connected to the circuit element 30, and the two light supplement members 22 can work independently, so that one of the light supplement members 22 or the other light supplement member 22 can be selected and used according to the needs, or the two light supplement members 22 can be used at the same time. Therefore, it is helpful to improve the service life of the light supplement member 22, thereby improving the service life of the monitoring structure 100, and making the camera unit 20 applicable to different scenes and improving the applicability of the monitoring structure 100, such as automatically switching different light supplement members 22 to work through the circuit element 30 according to the working time of the monitoring, effectively improving the service life of the light supplement member 22.

[0039] In some embodiments, in combination with Figures 1 to 6The side of the shell 10 facing the pumped storage switchgear 200 is provided with an observation window 13, and the observation window 13 is provided with a transparent glass element 14, so that the camera unit 20 can shoot the image of the contact 210 without being blocked by the shell 10. That is, the observation window 13 provides a window for the shell 10 of the monitoring structure 100 and the outer shell of the pumped storage switchgear 200 to communicate. Through the observation window 13, the camera unit 20 directly faces the contact 210 of the pumped storage switchgear 200 through the transparent glass element 14, so that the photosensitive element 21 can immediately and effectively collect the image of the contact 210 to determine whether the contact 210 is in a closed or open state, thereby monitoring the running state of the pumped storage switchgear 200 in real time.

[0040] Feasibly, the observation window 13 is provided with a groove, and the groove is arranged on the side of the shell 10 facing the camera element, and the glass element 14 abuts against the groove, so as to facilitate the installation and fixation of the glass element 14. Through the abutting cooperation of the groove and the glass element 14, the glass element 14 can be effectively prevented from falling off into the pumped storage switchgear 200 and affecting the normal movement of the contact 210, thereby ensuring the reliability of the installation of the glass element 14.

[0041] Preferably, the glass element 14 is bonded in the groove by glue, so as to realize the installation and fixation of the glass element 14, and also realize the sealing of the glass element 14 and the observation window 13, without the need to increase a complex sealing structure to seal the glass element 14. Alternatively, the glass element 14 is bonded in the groove by photosensitive glue, which can be quickly cured under ultraviolet light, which helps to improve the installation efficiency of the glass element 14, and the photosensitive glue has high bonding strength, so that the glass element 14 and the groove form a stable connection.

[0042] In some embodiments, referring to Figures 1 to 4 The monitoring structure 100 further comprises a fixing unit for fixing the shell 10 to the outer shell of the pumped storage switchgear 200, thereby fixing the monitoring structure 100 to the pumped storage switchgear 200, ensuring the installation stability and reliability of the monitoring structure 100, and enabling the monitoring structure 100 to stably and reliably collect and transmit the image of the contact 210.

[0043] The fixing unit comprises a first fixing member 51 coaxially arranged with the shell 10 and a second fixing member 52, the first fixing member 51 is used to connect the shell 10 and the outer shell of the pumped storage switch device 200, and the second fixing member 52 is used to fix the shell 10. Specifically, the first fixing member 51 and the second fixing member 52 are arranged around the circumference of the shell 10 and abut against the shell 10, the first fixing member 51 is movably connected to the second fixing member 52, so that the distance between the shell 10 and the outer shell of the pumped storage switch device 200 can be adjusted, thereby enabling the camera unit 20 to capture clear image information of the contact 210 and achieve a satisfactory installation effect.

[0044] It should be noted that the first fixing member 51 and the second fixing member 52 are coaxially arranged with the shell 10, that is, the central axes of the first fixing member 51 and the second fixing member 52 coincide with the central axis of the shell 10, that is, the first fixing member 51 and the second fixing member 52 fix the shell 10 in the axial direction.

[0045] Further, the camera unit 20 is arranged along the central axis of the shell 10 and is disposed in the middle of the accommodating cavity, so that the camera unit 20 can effectively and clearly capture the image of the contact 210, and the circuit element 30 is disposed on the side of the camera unit away from the observation window 13, so as to avoid affecting the normal work of the camera unit 20.

[0046] Specifically, the shell 10 comprises a first shell 11 and a second shell 12, the first shell 11 is connected to the second shell 12, and the first shell 11 and the second shell 12 jointly form the accommodating cavity of the camera unit 20 and the circuit element 30. The first shell 11 is provided with an observation window 13 on the side facing the pumped storage switch device 200, and the electrical connecting member 40 is connected to the second shell 12 and protrudes from the second shell 12 in a direction away from the pumped storage switch device 200.

[0047] The first shell 11 comprises an observation part 111, an accommodating part 112 and an abutting part 113 connected in sequence, the accommodating part 112 is arranged along the central axis direction to form the accommodating cavity, the observation part 111 is connected to one end of the accommodating part 112 close to the pumped storage switch device 200, the observation part 111 can close the one end of the accommodating part 112 to ensure that the camera unit 20 and the circuit element 30 can be stably accommodated in the accommodating cavity, and the observation window 13 is arranged on the observation part 111, and the second shell 12 can shield the other end of the accommodating part 112.

[0048] The abutting portion 113 is arranged to extend in a radially outward direction from the end of the accommodating portion 112 away from the pumped storage switching device 200, so that the accommodating portion 112 can be partially accommodated in the first fixing member 51, and the abutting portion 113 abuts the first fixing member 51 towards one side of the pumped storage switching device 200, and the abutting portion 113 abuts the second fixing member 52 away from one side of the pumped storage switching device 200.

[0049] The second fixing member 52 is arranged in the circumferential direction of the first fixing member 51, and the second fixing member 52 can be threadedly connected to the first fixing member 51, so that the abutting portion 113 can be abutted to the first fixing member 51 by the second fixing member 52, and the fixing degree of the abutting portion 113 can be controlled, so as to control the fixing degree of the shell 10.

[0050] In some embodiments, the monitoring structure 100 further comprises a sealing unit, the sealing unit further comprising a first sealing member 61 and a second sealing member 62 arranged coaxially with the shell 10, the first sealing member 61 being arranged between the first fixing member 51 and the shell 10, and the second fixing member 52 being arranged between the first fixing member 51 and the outer shell of the pumped storage switching device 200, so as to realize sealing between the pumped storage switching device 200 and the monitoring structure 100.

[0051] Specifically, the abutting portion 113 is provided with a first mounting groove towards one side of the pumped storage switching device 200, and the first sealing member 61 can be accommodated in the first mounting groove, so as to realize sealing between the abutting portion 113 and the first shell 11. Optionally, the first sealing member 61 is a sealing ring.

[0052] The first fixing member 51 is provided with a second mounting groove towards one side of the pumped storage switching device 200, and the second sealing member 62 can be accommodated in the second mounting groove, so as to realize sealing between the first fixing member 51 and the outer shell of the pumped storage switching device 200. Optionally, the second sealing member 62 is a sealing ring.

[0053] Optionally, the sealing unit further comprises a third sealing member 63 arranged between the first shell 11 and the second shell 12 to realize sealing between the first shell 11 and the second shell 12, thereby ensuring the sealing of the monitoring structure 100. Specifically, the second shell 12 is formed with a groove in the circumferential direction, and the third sealing member 63 is mounted in the groove to realize sealing of the first shell 11 and the second shell 12. Optionally, the third sealing member 63 is a sealing gasket.

[0054] It should be noted that the first sealing member 61, the second sealing member 62 and the third sealing member 63 in the present application are all in an axial sealing manner, which is helpful for the overall assembly of the monitoring structure 100, avoids the problem of difficult disassembly caused by radial sealing, and improves the installation efficiency of the monitoring structure 100.

[0055] The monitoring structure 100 is assembled with the pumped storage switching device 200 by the following steps: the first shell 11 is connected with the second shell 12 by the fasteners, the first shell 11 is placed in the first fixing part 51, the first shell 11 is fixed between the first fixing part 51 and the second fixing part 52 by the threaded connection of the second fixing part 52 and the first fixing part 51, the position of the camera unit 20 is adjusted by adjusting the length of the threaded connection, so that the camera unit 20 can be at a suitable distance and angle, the first fixing part 51 is installed on the outer shell of the pumped storage switching device 200 by the fasteners, and the assembly of the monitoring structure 100 and the pumped storage switching device 200 is completed.

[0056] When the monitoring structure 100 is in use, the image of the contact 210 is acquired by the cooperation of the photosensitive element 21 and the light supplementing part 22, so as to determine whether the contact 210 is in a closed or open state, and further determine the running state of the pumped storage switching device 200, and complete the real-time monitoring of the pumped storage switching device 200.

[0057] When the contact 210 performs the switching action of opening or closing, the control module 31 can disconnect the power supply loop and the signal transmission loop of the electrical connection part 40, so that the monitoring structure 100 is in a floating potential state, after the contact 210 completes the switching action of opening or closing, the control module 31 can control the recovery of the power supply loop and the signal transmission loop of the electrical connection part 40, acquire the image information of the contact 210, determine whether the contact 210 reaches the preset position, and monitor the running state of the pumped storage switching device 200, so as to avoid the electromagnetic interference of the pumped storage switching device 200 on the monitoring structure 100, improve the anti-electromagnetic interference capability of the monitoring structure 100, improve the accuracy and reliability of the monitoring result, and further improve the monitoring efficiency of the pumped storage switching device 200 and improve the service life of the monitoring structure 100.

[0058] The technical features of the above-mentioned embodiments can be combined arbitrarily, and in order to make the description simple, not all possible combinations of the technical features in the above-mentioned embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the description.

[0059] The above-mentioned embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the patent application scope. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A monitoring structure for monitoring the contact opening and closing status of a pumped storage switchgear, characterized in that: The monitoring structure includes: a housing having an accommodating cavity formed therein and capable of being connected to an outer shell of the pumped-storage switchgear; a camera unit, the camera unit being disposed in the accommodating cavity and capable of capturing images of contacts of the pumped-storage switchgear and converting the images into electrical signals; and A circuit element is arranged in the accommodating cavity and connected to the camera unit. The circuit element includes a control module and a signal processing module. The camera unit includes a photosensitive element. The photosensitive element can convert the light image on its light receiving surface into an electrical signal with a corresponding proportional relationship, and transmit the electrical signal to the signal processing module. The signal processing module is used to process the electrical signal of the camera unit and transmit it to an external device, so that the image of the contact of the pumped-storage switch device can be displayed in real time through the external device, and the contact opening and closing state of the pumped-storage switch device can be monitored based on the position information of the contact being open or closed. The control module can control the power-on state of the monitoring structure and the signal transmission state of the signal processing module.

2. The monitoring structure according to claim 1, characterized in that: The circuit element is also provided with an isolation power supply module and a video signal isolation module.

3. The monitoring structure according to claim 1, characterized in that: The photosensitive element is a CCD photosensitive element or a CMOS photosensitive element.

4. The monitoring structure according to claim 1, characterized in that: The camera unit further includes a fill light component spaced apart from the photosensitive element, and the fill light component is used to supplement the light source for the photosensitive element.

5. The monitoring structure according to claim 4, characterized in that: There are two fill light components, which are arranged on both sides of the photosensitive element and are distributed in a triangle with the two fill light components and the photosensitive element.

6. The monitoring structure according to claim 4, characterized in that: An observation window is provided on a side of the housing facing the pumped-storage switchgear. A transparent glass element is provided in the observation window, so that the photosensitive element can collect the image of the contact.

7. The monitoring structure according to claim 6, characterized in that: A groove is provided in the observation window, and the glass element abuts against the groove.

8. The monitoring structure according to claim 1, characterized in that: The monitoring structure further includes a fixing unit, which is used to fix the shell to the outer shell of the pumped-storage switchgear.

9. The monitoring structure according to claim 8, characterized in that: The fixing unit includes a first fixing member and a second fixing member coaxially arranged with the shell. The first fixing member and the second fixing member are arranged around the shell and abut against the shell. The first fixing member is movably connected to the second fixing member, so that the distance between the camera unit and the shell of the pumped-storage switchgear can be adjusted.

10. The monitoring structure according to claim 9, characterized in that: The monitoring structure also includes a sealing unit, which includes a first sealing member and a second sealing member coaxially arranged with the shell, the first sealing member is arranged between the first fixing member and the shell, and the second fixing member is arranged between the first fixing member and the outer shell of the pumped-storage switchgear.

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