A method for monitoring grounding interference of substation equipment

Abstract

The present invention relates to the technical field of substation equipment monitoring, and specifically to a method for monitoring grounding interference of substation equipment. The method for monitoring grounding interference of substation equipment includes the following steps: step 1, burying wires in the surface layer of the ground to form a rectangular metal mesh wire; step 2, connecting a voltmeter in the middle of the four sides of the metal mesh wire; step 3, installing a camera device in front of the dial of the voltmeter; step 4, covering the camera device with an insulator off the ground and connecting it to the Internet; step 5, connecting a mobile terminal network to the camera device; step 6, connecting the grounding end of the high-voltage transformer equipment to the ground; step 7, connecting the grounding end of the high-voltage transformer equipment to the metal mesh wire. The method can monitor grounding interference of substation equipment, can fully understand the specific situation of the incident site, receive information on the incident site at any time, thereby avoiding sudden accidents at the incident site and improving the safety of substation equipment.

Description

Technical Field

[0001] The invention relates to the technical field of substation equipment monitoring, and in particular to a substation equipment grounding interference monitoring method. Background Art

[0002] Various protection and control systems of substations face high voltage, strong electric field and very complex electromagnetic environment during operation. There are magnetic field interference caused by large current, electric field interference caused by high-voltage transformer equipment, ground potential interference caused by ground potential difference when large current flows through grounding device, harmonic interference generated by some nonlinear ferromagnetic components and rectifier equipment in the power grid, and lightning overvoltage interference generated by lightning overvoltage when lightning strikes.

[0003] The introduction of grounding technology was originally a protective measure to prevent electrical or electronic equipment from being struck by lightning. The purpose was to introduce the lightning current generated by lightning into the earth through the lightning rod, thereby protecting the building. At the same time, grounding is also an effective means to protect personal safety. When the phase line caused by some reason (such as poor insulation of the wire, aging of the line, etc.) touches the equipment shell, a dangerous voltage will be generated on the equipment shell, and the fault current generated will flow through the PE line to the earth, thereby playing a protective role.

[0004] However, there is no technology specifically designed for monitoring grounding interference in substation equipment. Generally, technicians use current monitoring to determine whether substation equipment is leaking or disturbed. However, monitoring equipment can only determine the location, but cannot determine whether there are other unexpected situations at the scene, such as fire caused by lightning. At the same time, technicians can only check the status of substation equipment in the monitoring room during monitoring. Once an accident occurs, they cannot understand the latest situation at the scene while rushing to the scene, which is quite passive.

[0005] Therefore, it is urgent to design a substation equipment grounding interference monitoring method to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to propose a method for monitoring grounding interference of substation equipment. The method can monitor grounding interference of substation equipment, fully understand the specific situation of the incident site, receive information from the incident site at any time, thereby avoiding sudden accidents at the incident site and improving the safety of substation equipment.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] The present invention provides a method for monitoring grounding interference of substation equipment, and the method for monitoring grounding interference of substation equipment comprises the following steps:

[0009] Step 1: bury the wire in the ground surface to form a rectangular metal mesh wire;

[0010] Step 2: Connect a voltmeter at the middle of the four sides of the metal mesh wire;

[0011] Step 3: Install a camera device in front of the dial of the voltmeter;

[0012] Step 4: lift the camera device off the ground, cover it with an insulator and connect it to the Internet;

[0013] Step 5: Connect the mobile terminal network to the camera device;

[0014] Step 6: Connect the grounding terminal of the high-voltage transformer to the ground;

[0015] Step 7: Connect the ground terminal of the high-voltage transformer to the metal mesh wire.

[0016] As an optional technical solution for a method of monitoring grounding interference of substation equipment, the metal mesh conductor is buried at a depth of fifty centimeters to sixty centimeters.

[0017] As an optional technical solution for a method for monitoring grounding interference of substation equipment, the metal mesh conductor is made of a steel-copper alloy material, and the surface of the metal mesh conductor is coated with an anti-rust coating.

[0018] As an optional technical solution for a method for monitoring grounding interference of substation equipment, the metal mesh wires are in the shape of a grid that is staggered horizontally and vertically and contacts each other when buried in the ground.

[0019] As an optional technical solution for a method for monitoring ground interference of substation equipment, four voltmeters are provided, the input ends of the four voltmeters are all grounded and are respectively movably connected to the midpoints of the four sides of the metal mesh conductor, the body of the voltmeter is exposed to the ground, and the dial of the voltmeter is located above the ground.

[0020] As an optional technical solution for a method for monitoring grounding interference of substation equipment, the camera device is located directly in front of the dial of the voltmeter, and the monitoring range of the camera device includes the dial of the voltmeter and the high-voltage transformer equipment.

[0021] As an optional technical solution for a method of monitoring ground interference of substation equipment, the bottom of the camera device contacts the ground by installing an insulating bracket, and the surface of the insulating bracket and the camera device are covered with an insulating film, which is a high-temperature resistant insulating film. The camera device has a built-in WiFi module for connecting to the Internet.

[0022] As an optional technical solution for a method for monitoring grounding interference of substation equipment, the mobile terminal is a computer, a mobile phone or a tablet, and the mobile terminal is connected to the camera device via the WiFi module network.

[0023] As an optional technical solution for a method for monitoring grounding interference of substation equipment, the depth at which the grounding terminal of the high-voltage transformer equipment is connected to the ground is greater than sixty centimeters.

[0024] As an optional technical solution for a method for monitoring grounding interference of substation equipment, the grounding end of the high-voltage transformer equipment is evenly wrapped by the metal mesh wire, and the grounding end of the high-voltage transformer equipment is located at the center of the metal mesh wire.

[0025] The beneficial effects of the present invention include at least:

[0026] (1) The present invention uses a camera to take a real-time video of the dial of the voltmeter, thereby recording the dial data so that the incident information can be read after the incident. Since the camera has a large coverage area, the high-voltage transformer equipment can be recorded, so that the situation of the high-voltage transformer equipment can be monitored, ensuring that the screen can be recorded in real time when encountering lightning strikes, earthquakes, etc., achieving the beneficial effect of monitoring ground interference specifically for high-voltage transformer equipment.

[0027] (2) The present invention installs four voltmeters at the midpoints of the four sides of the rectangular metal mesh conductor. At this time, the voltmeters are relatively located at the four sides of the high-voltage transformer. Because the four voltmeters can contact the four sides of the metal mesh conductor, even if the ground is deformed due to sudden geological activities, it can be ensured that all voltmeters will not have accidents. The dial of the voltmeter is photographed in real time by a camera device, so that the dial data is recorded, achieving the beneficial effect of being able to fully understand the specific situation of the incident site.

[0028] (3) The present invention uploads recorded images directly to the Internet through a camera device, so that a mobile terminal can be used to access the cloud and view the recorded images. This effectively ensures that even if you are not in the monitoring room, you can use a mobile phone or other device to observe the status of the high-voltage transformer equipment at any time, thereby achieving the beneficial effect of receiving information from the scene at any time and avoiding sudden accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0030] Figure 1 A schematic flow chart of a method for monitoring grounding interference of substation equipment provided in Embodiment 1 of the present invention. DETAILED DESCRIPTION

[0031] In order to make the technical problem solved by the present invention, the technical solution adopted and the technical effect achieved more clearly, the technical solution of the present invention is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] Embodiment 1:

[0036] like Figure 1 As shown, this embodiment provides a method for monitoring grounding interference of substation equipment, which mainly includes the following steps:

[0037] Step 1: bury the wires in the ground surface to form a rectangular metal mesh wire.

[0038] Exemplarily, the buried depth of the metal mesh wire is fifty centimeters to sixty centimeters. The metal mesh wire is a steel-copper alloy. The surface of the metal mesh wire is coated with an anti-rust coating. When the metal mesh wire is buried in the bottom surface, it is a grid shape that is staggered horizontally and vertically and contacts each other. The advantage is that the steel-copper alloy ensures that the metal mesh wire has toughness and hardness, effectively reduces the cost of pure copper, and does not affect the conductive performance. The further anti-rust coating is a common metal anti-rust liquid coating, which is a mature technology available on the market. The metal mesh wires are interconnected to form a metal mesh, so that any leakage at the grounding end of the high-voltage transformer equipment can be sensed by the metal mesh wire. At the same time, since the metal mesh wires in the metal mesh are interconnected, when one point is conductive, the metal mesh wires are fully inductive.

[0039] Step 2: Connect a voltmeter to the middle of the four sides of the metal mesh wire.

[0040] Exemplarily, there are four voltmeters, and each voltmeter is located at the midpoint of the four sides of the metal mesh conductor. The input terminals of the four voltmeters are grounded and movably connected to the edge of the metal mesh conductor. The voltmeter body is exposed to the ground, and the dial is located above the ground. The four voltmeters are respectively installed at the midpoints of the four sides of the metal mesh conductor. At this time, the voltmeters are relatively located on the four sides of the substation equipment. Furthermore, the four voltmeters can contact the four sides of the metal mesh conductor. Even if the bottom surface is deformed due to sudden geological activities, it can ensure that all voltmeters will not have accidents. Further, the voltmeter is an existing device, and it is not improved in the present invention. It belongs to application and will not be introduced in detail here. When the staff is on site, they can read the leakage situation by observing the dial.

[0041] Step 3: Install a camera device in front of the voltage detection meter dial.

[0042] For example, the camera device is located in front of the dial of the voltmeter, and the monitoring range of the camera device includes the dial of the voltmeter. At the same time, the monitoring range of the camera device also includes the high-voltage transformer. The advantage is that the dial of the voltmeter is photographed in real time by the camera device, so that the dial data can be recorded so that the incident information can be read after the incident. Furthermore, since the camera device has a large coverage area, the actual situation of the high-voltage transformer can be recorded, so that the situation of the high-voltage transformer can be monitored, thereby ensuring that the picture can be recorded in real time when encountering lightning strikes, earthquakes, etc.

[0043] Step 4: Lift the camera device off the ground, cover it with an insulator and connect it to the Internet.

[0044] For example, the bottom of the camera device is in contact with the ground by installing an insulating bracket, and the insulating bracket and the surface of the camera device are covered with an insulating film, which is a high-temperature resistant insulating film, and the camera device has a built-in WiFi module for connecting to the Internet. The advantage is that the camera device is separated from the ground by the insulating bracket, and the insulating film is used for secondary protection and double insulation, which prevents the super-strong current from being directly propagated in the air and hitting the camera device when it encounters a lightning strike.

[0045] Step 5: Connect the mobile terminal network to the camera device.

[0046] Exemplarily, the mobile terminal is a computer, mobile phone, tablet or other network-connected tool, and the mobile terminal is connected to the camera device through the network. The advantage is that the recorded images can be directly uploaded to the Internet through the camera device, so that the cloud can be accessed using the mobile terminal and the recorded images can be viewed, which effectively ensures that even if you are not in the monitoring room, you can use a mobile phone or other network-connected tool to observe the high-voltage transformer equipment at any time.

[0047] Step 6. Connect the grounding terminal of the high-voltage transformer to the ground.

[0048] For example, the grounding terminal of the high-voltage transformer equipment is buried at a depth greater than 60 centimeters. The advantage is that by connecting the grounding terminal of the high-voltage transformer equipment to the ground surface, and the depth of the grounding terminal exceeds the depth of the metal mesh wire, the high-voltage transformer equipment is stably supported and better grounding is also facilitated.

[0049] Step 7: Connect the ground terminal of the high-voltage transformer to the metal mesh wire.

[0050] Exemplarily, the grounding end of the high-voltage transformer is evenly wrapped by a metal mesh wire, and the grounding end of the high-voltage transformer is located at the center of the metal mesh. The advantage is that by evenly wrapping the metal mesh wire to the grounding end of the high-voltage transformer, the metal mesh wire is fully in contact with the transformer.

[0051] Embodiment 2:

[0052] This embodiment provides a method for monitoring grounding interference of substation equipment, which is different from the first embodiment in that: in step 1 of this embodiment, a conductor is buried in the surface layer of the ground to form a ring-shaped metal mesh conductor. In step 2, four voltage transformers are arranged at equal intervals on the side of the ring-shaped metal mesh, and the input ends of the four voltage meters are grounded and movably connected to the edge of the ring-shaped metal mesh, so that the voltage meters are evenly stressed and the stability and reliability of the voltage meters are improved. This ensures that even if sudden geological activities cause ground deformation, all voltage meters will not encounter unexpected conditions.

[0053] The remaining method steps in this embodiment are the same as those in the first embodiment and will not be described in detail here.

[0054] Obviously, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

[0055] Note that in the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A method for monitoring grounding interference of substation equipment, characterized in that: The substation equipment grounding interference monitoring method comprises the following steps: Step 1: burying a wire in the ground surface to form a rectangular metal mesh wire; the burying depth of the metal mesh wire is between 50 cm and 60 cm; Step 2: Connect a voltmeter at the middle of the four sides of the metal mesh wire; the voltmeters are provided in four pieces, the input ends of the four voltmeters are grounded and are movably connected to the midpoints of the four sides of the metal mesh wire, the body of the voltmeter is exposed to the ground, and the dial of the voltmeter is located above the ground; Step 3: Install a camera device in front of the dial of the voltmeter; the camera device is located directly in front of the dial of the voltmeter, and the monitoring range of the camera device includes the dial of the voltmeter and the high-voltage transformer; Step 4: lift the camera device off the ground, cover it with an insulator and connect it to the Internet; the bottom of the camera device is in contact with the ground by installing an insulating bracket, the insulating bracket and the surface of the camera device are covered with an insulating film, and the insulating film is a high-temperature resistant insulating film, and the camera device has a built-in WiFi module for connecting to the Internet; Step 5: Connect the mobile terminal network to the camera device; Step 6: Connect the grounding terminal of the high-voltage transformer to the ground; Step seven, connecting the grounding terminal of the high-voltage transformer equipment to the metal mesh wire; the grounding terminal of the high-voltage transformer equipment is evenly wrapped by the metal mesh wire, and the grounding terminal of the high-voltage transformer equipment is located at the center of the metal mesh wire.

2. A method for monitoring grounding interference of substation equipment according to claim 1, characterized in that: The metal mesh wire is made of steel-copper alloy, and the surface of the metal mesh wire is coated with an anti-rust coating.

3. A method for monitoring grounding interference of substation equipment according to claim 2, characterized in that: When the metal mesh wires are buried in the ground, they are in a grid shape that is staggered horizontally and vertically and contacts each other.

4. A method for monitoring grounding interference of substation equipment according to claim 1, characterized in that: The mobile terminal is a computer, a mobile phone or a tablet, and the mobile terminal is connected to the camera device through the WiFi module network.

5. A method for monitoring grounding interference of substation equipment according to claim 1, characterized in that: The depth of the grounding terminal of the high-voltage transformer equipment connected to the ground is greater than sixty centimeters.

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