Device used for grounding busbar and having grounding abnormity display function

Abstract

The invention discloses a device with an abnormal grounding display function for a grounding busbar, and relates to the technical field of substation detection equipment. The device with the abnormal grounding display function for the grounding busbar comprises a device shell, a power module, a flexible current sensor module, a Hall sensor module and a data processing module are arranged in the device shell, and the outer surface of the device shell is fixedly connected with a display control screen, a wiring device and a heat dissipation device. A wiring hole and a ventilation hole are formed in the outer surface of the device shell, a battery cover is arranged on the outer surface of the device shell, an alarm indicator lamp is fixedly connected to the top of the device shell, a flexible current sensor technology is adopted, N600 loop potential difference leakage current is detected, non-contact measurement is achieved, and safety and rapidness are achieved; ground wire current of a current secondary loop is detected, whether an insulation value is normal or not is judged according to a branch current mode, and poor branch insulation can be accurately judged.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer substation detection equipment, in particular to a device for a grounding busbar with a grounding anomaly display function. Background Art

[0002] In actual operation, due to design and construction, as well as aging of secondary equipment and insulation breakdown, the voltage transformer's secondary neutral point, N600, may be grounded at two points. If N600 is grounded in the switchyard and the control room, and a system fault occurs, and a large fault current flows through the substation or power plant ground grid, a potential difference will appear across N600. This will cause a phase shift in the neutral point voltage, affecting the amplitude and phase of the phase and zero-sequence voltages. If the N600 is poorly connected or grounded at multiple points, this can also cause a phase shift in the neutral point voltage, causing distance protection and zero-sequence directional protection to fail or malfunction. Therefore, real-time monitoring of the N600's grounding status is necessary.

[0003] In the existing technology, substations mainly use manual regular inspections to monitor N600 grounding points. Due to the large number of voltage circuits and complex wiring in operating substations, the cable directions are not easy to observe directly with the naked eye. The operation and performance of the N600 points grounded through the discharge gap cannot be monitored. It is even more difficult to find grounding caused by equipment aging, insulation breakdown, etc., and in the actual search process, each panel and terminal box needs to be checked one by one. There are many work locations, a large workload, and the operation is labor-intensive and time-consuming. Therefore, the N600 multi-point grounding problem is difficult to find during normal operation, and the operation and performance of the grounded N600 points cannot be monitored. It is even more difficult to find grounding caused by equipment aging, insulation breakdown, etc., which poses a severe challenge to the safe operation of the power system. Summary of the Invention

[0004] In view of the above problems existing in the existing device for grounding busbar with grounding abnormality display function, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a device for a grounding busbar having a grounding abnormality display function.

[0006] In order to solve the above technical problems, the present invention provides the following technical solution: including a shell; a control component, which is arranged inside the shell; functional components, which include a display control screen arranged on the outer surface of the shell, a wiring component arranged below the display control screen, and a heat dissipation component arranged on one side of the shell.

[0007] As a preferred solution of the device for a grounding busbar with a grounding abnormality display function described in the present invention, the control component includes a power supply module arranged inside the shell, a flexible current sensor module arranged above the power supply module, a Hall sensor module arranged on one side of the flexible current sensor module, and a data processing module arranged at the top of the shell.

[0008] As a preferred solution of the device for a grounding busbar with a grounding abnormality display function described in the present invention, the wiring assembly includes a fixing plate arranged on one side of the outer shell, a through hole arranged inside the fixing plate, an airbag ring arranged on the inner surface of the through hole, a fixing tube arranged on the upper surface of the fixing plate, and a fastener arranged inside the fixing tube.

[0009] As a preferred solution of the device for a grounding busbar with a grounding abnormality display function described in the present invention, the fastener includes a connecting screw sleeve provided at the top of the fixing cylinder, a threaded push rod provided on the inner surface of the connecting screw sleeve, and a piston block provided at the bottom end of the threaded push rod.

[0010] As a preferred solution of the device for the grounding busbar with a grounding abnormality display function described in the present invention, the heat dissipation component includes a shielding cover arranged on one side of the outer shell, a driving motor arranged on the inner surface of the shielding cover, a fan blade arranged in one end of the driving motor, and a drying box arranged inside the shielding cover.

[0011] As a preferred solution of the device for a grounding busbar with a grounding abnormality display function according to the present invention, the outer surface of the fixing plate is fixedly connected to the outer surface of the shell, the through holes are aligned with the wiring holes, the through holes are linearly arranged along the outer surface of the fixing plate, and the wiring holes are linearly arranged along the outer surface of the shell.

[0012] As a preferred solution of the device for a grounding busbar with a grounding abnormality display function described in the present invention, the outer surface of the shielding cover is fixedly connected to the outer surface of the outer shell, the ventilation hole is arranged in the inner cavity of the shielding cover, the outer surface of the rotating shaft passes through the ventilation hole and extends to the interior of the outer shell, and the fan blades are arranged inside the outer shell.

[0013] As a preferred solution of the device for a grounding busbar with a grounding abnormality display function described in the present invention, the outer surface of the shielding cover is provided with a mounting groove, the outer surface of the drying box is fitted and adapted to the inner surface of the mounting groove, and the drying box is arranged on the upper surface of the support plate.

[0014] As a preferred embodiment of the device for a grounding busbar with a grounding anomaly display function according to the present invention, a box cover is provided on the outer surface of the drying box, ventilation holes are provided on the outer surface of the drying box, a plurality of ventilation holes are provided, and the drying box is arranged below the ventilation holes.

[0015] As a preferred solution of the device for a grounding busbar with a grounding abnormality display function of the present invention, a support plate is provided below the vent hole, and a first baffle and a second baffle are provided below the support plate.

[0016] The beneficial effects of the present invention are as follows: 1. The device for the grounding busbar has a grounding abnormality display function. The N600 phase deviation signal collected by the flexible current sensor module is the differential of the current with respect to time. By integrating the output voltage signal, the ground loop leakage current can be truly restored. The measurement current range can be from tens of milliamperes to tens of amperes, and can be reliably converted into the voltage phase offset of the neutral point. There is no exposed metal conductor, non-contact measurement, safe and fast. It is small in size, light in weight, exquisite in appearance, soft and flexible, and the coil length can be customized according to the size of the N600 grounding busbar.

[0017] 2. The device for displaying grounding anomalies on the grounding busbar uses a Hall sensor module and a high-precision anti-interference bridge structure Hall sensor to collect the branch grounding loop current and accurately determine poor branch insulation.

[0018] 3. The device for grounding busbar with grounding abnormality display function has a display control screen, alarm indicator light and data processing module, a portable design, and a graphical curve display of the detection results. It is intuitive, convenient and fast, and the software is highly intelligent. In addition, through 4G network technology and relying on the wide coverage of 4G network, it can alarm when abnormalities caused by unreliable grounding are detected. The alarm signal can be sent to the operation and maintenance personnel via SMS for processing.

[0019] 4. The device for the grounding busbar has a grounding abnormality display function. Through the wiring device and the heat dissipation component, the wiring device can wrap the input and output lines to prevent dust in the outside air from entering the interior of the shell through the wiring holes. The heat dissipation component can increase the air flow in the shell through the fan blades, thereby accelerating the heat dissipation to prevent heat accumulation in the shell from affecting the normal operation of each module, and can also reduce dust and moisture entering the shell, thereby extending the service life of each module in the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort. Among them:

[0021] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0022] Figure 2 A second perspective structural diagram of the present invention as a whole;

[0023] Figure 3 Schematic diagram of the internal structure of the present invention as a whole;

[0024] Figure 4 It is a structural schematic diagram of the wiring device of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the heat dissipation assembly of the present invention;

[0026] Figure 6 It is a schematic cross-sectional structural diagram of the heat dissipation assembly of the present invention. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0030] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0031] Example 1

[0032] Reference Figure 1-6 , provides a device for a grounding busbar with a grounding abnormality display function, including a shell 100; a control component 101, which is arranged inside the shell 100; a functional component 200, which includes a display control screen 201 arranged on the outer surface of the shell 100, a wiring component 202 arranged below the display control screen 201, and a heat dissipation component 203 arranged on one side of the shell 100.

[0033] Specifically, the control component 101 includes a power module 101a arranged inside the shell 100, a flexible current sensor module 101b arranged above the power module 101a, a Hall sensor module 101c arranged on one side of the flexible current sensor module 101b, and a data processing module 101d arranged at the top inside the shell 100.

[0034] Furthermore, the wiring assembly 202 includes a fixing plate 202a provided on one side of the housing 100, a through hole 202b provided inside the fixing plate 202a, an airbag ring 202c provided on the inner surface of the through hole 202b, a fixing tube 202d provided on the upper surface of the fixing plate 202a, and a fastener 202e provided inside the fixing tube 202d. The outer surface of the fixing tube 202d passes through the fixing plate 202a and extends to the interior of the airbag ring 202c. The interior of the fixing tube 202d is connected to the interior of the airbag ring 202c.

[0035] Furthermore, the fastener 202e includes a connecting screw sleeve 202e-1 provided at the top of the fixed cylinder 202d, a threaded push rod 202e-2 provided on the inner surface of the connecting screw sleeve 202e-1, and a piston block 202e-3 provided at the bottom end of the threaded push rod 202e-2. The outer surface of the piston block 202e-3 is extruded and adapted to the inner surface of the fixed cylinder 202d. The top end of the threaded push rod 202e-2 is fixedly connected to a rotary block, which is provided above the connecting screw sleeve 202e-1.

[0036] Through the wiring device, the input and output lines of the device pass through the airbag ring 202c in the through hole 202b and are inserted into the wiring hole 102. The rotary block is rotated, and with the cooperation of the connecting screw sleeve 202e-1, the threaded push rod 202e-2 rotates and moves downward, and the piston block 202e-3 moves downward along the inner surface of the fixed cylinder 202d, squeezing the air below the piston block 202e-3 in the fixed cylinder 202d into the airbag ring 202c, so that the airbag ring 202c is inflated until the airbag ring 202c wraps the wire, which can prevent dust in the outside air from entering the interior of the shell 100 through the wiring hole 102.

[0037] Furthermore, the heat dissipation assembly 203 includes a shielding cover 203a provided on one side of the housing 100, a driving motor 203b provided on the inner surface of the shielding cover 203a, a fan blade 203c provided in one end of the driving motor 203b, and a drying box 203d provided inside the shielding cover 203a.

[0038] Operation process: When in use, the flexible current sensor module 101b8 is used to detect the N600 loop potential difference leakage current using flexible current sensor technology. The implementation scheme is a ring coil evenly wound on a non-ferromagnetic material and passed through the ground loop busbar. It has the characteristics of no hysteresis effect, no magnetic saturation phenomenon, extremely high linearity, and strong anti-interference ability. Then, a resistive load constant current circuit is connected in series to achieve the voltage phase offset detection of the neutral point of N600 and the leakage current sensitivity problem of not less than 100mA. Under the premise of a good grounding loop, the Hall sensor module 101c9 is used to detect the current of the grounding wire of the secondary circuit, and judge whether the insulation value is normal based on its branch current mode. When unreliable grounding is detected, When the voltage phase is offset or the secondary circuit leakage current is abnormal, an alarm is issued and the alarm indicator light 3 flashes, indicating that there is a grounding or insulation problem, prompting the operator to pay attention. A direct capacitive coupling detection solution is adopted to display the busbar with abnormal grounding in a local graphical manner on the display control screen 2012, so as to achieve the purpose of real-time detection of the insulation status of the grounding network and the secondary circuit of the transformer, timely discover major defects in the line, and ensure the safe operation of the power grid. The alarm signal is uploaded via the 4G network in the form of SMS, and the operation and maintenance personnel handle it in time, which can greatly reduce the workload and improve performance. The technical idea adopted is to use a flexible microcurrent sensor, a digital Wheatstone bridge, a differential amplifier, a DC amplifier, an active third-order filter, and a high-performance ARM Cortex-M3 processor to display the measurement data in real time and use an expandable SMS module to send information to mobile phones.

[0039] Example 2

[0040] Reference Figure 1-6 This embodiment is different from the first embodiment in that the heat dissipation assembly 203 includes a shielding cover 203a provided on one side of the housing 100, a driving motor 203b provided on the inner surface of the shielding cover 203a, a fan blade 203c provided in one end of the driving motor 203b, and a drying box 203d provided inside the shielding cover 203a.

[0041] Specifically, the outer surface of the fixing plate 202a is fixedly connected to the outer surface of the housing 100, the through holes 202b are aligned with the wiring holes 102, the through holes 202b are linearly arranged along the outer surface of the fixing plate 202a, and the wiring holes 102 are linearly arranged along the outer surface of the housing 100.

[0042] Furthermore, the outer surface of the shielding cover 203a is fixedly connected to the outer surface of the shell 100, the ventilation hole 103 is set in the inner cavity of the shielding cover 203a, the outer surface of the rotating shaft passes through the ventilation hole 103 and extends to the interior of the shell 100, and the fan blade 203c is set inside the shell 100.

[0043] Furthermore, a mounting groove 204 is formed on the outer surface of the shielding cover 203 a , and the outer surface of the drying box 203 d is fitted with the inner surface of the mounting groove 204 . The drying box 203 d is disposed on the upper surface of the support plate 205 .

[0044] Through the heat dissipation component 203, each module inside the housing 100 generates heat when it is running, and the drive motor 203b is started, so that the shaft drives the fan blades 203c to rotate, thereby increasing the air flow rate inside the housing 100. According to Bernoulli's principle, the pressure is low where the flow rate is high, and the outside air will pass through the shielding cover 203a and enter the housing 100. The air first enters from the bottom of the shielding cover 203a, and the air flows upward and passes through multiple first baffles 208 and second baffles 209. Under the obstruction of the first baffles 208 and second baffles 209, larger dust particles in the air are The air is blocked by gravity, which can reduce the dust entering the housing 100 and prevent the accumulation of dust in the housing 100 to generate static electricity and affect the operation of the internal circuit. The air then passes through the drying box 203d. Since the drying box 203d contains a desiccant, the moisture in the air is absorbed by the desiccant, preventing the moisture from causing a short circuit in the circuit. The dried air passes through the ventilation holes 103 and enters the housing 100, increasing the air flow in the housing 100, thereby accelerating heat dissipation and preventing heat accumulation in the housing 100 from affecting the normal operation of each module.

[0045] The rest of the structure is the same as that of Example 1.

[0046] Example 3

[0047] Reference Figure 1-6 This embodiment is different from the above embodiment in that a box cover 206 is provided on the outer surface of the drying box 203d, and ventilation holes 207 are opened on the outer surface of the drying box 203d. The number of ventilation holes 207 is several, and the drying box 203d is arranged below the ventilation hole 103.

[0048] Specifically, a support plate 205 , and a first baffle 208 and a second baffle 209 disposed below the vent hole 207 are provided.

[0049] The rest of the structure is the same as that of Example 2.

[0050] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape, and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number, or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0051] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0052] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A device for grounding busbar with grounding abnormality display function, characterized in that: include, Housing (100); A control component (101) disposed inside the housing (100); The functional component (200) comprises a display control screen (201) arranged on the outer surface of the housing (100), a wiring assembly (202) arranged below the display control screen (201), and a heat dissipation assembly (203) arranged on one side of the housing (100).

2. The device for grounding busbar with grounding abnormality display function according to claim 1, characterized in that: The control component (101) comprises a power module (101a) arranged inside the housing (100), a flexible current sensor module (101b) arranged above the power module (101a), a Hall sensor module (101c) arranged on one side of the flexible current sensor module (101b), and a data processing module (101d) arranged at the top of the housing (100).

3. The device for grounding busbar with grounding abnormality display function as claimed in claim 2, characterized in that: The wiring assembly (202) includes a fixing plate (202a) disposed on one side of the housing (100), a through hole (202b) disposed inside the fixing plate (202a), an airbag ring (202c) disposed on the inner surface of the through hole (202b), a fixing tube (202d) disposed on the upper surface of the fixing plate (202a), and a fastener (202e) disposed inside the fixing tube (202d).

4. The device for grounding busbar with grounding abnormality display function as claimed in claim 3, characterized in that: The fastener (202e) comprises a connecting screw sleeve (202e-1) arranged at the top of the fixing tube (202d), a threaded push rod (202e-2) arranged on the inner surface of the connecting screw sleeve (202e-1), and a piston block (202e-3) arranged at the bottom end of the threaded push rod (202e-2).

5. The device for grounding busbar with grounding abnormality display function as claimed in claim 4, characterized in that: The heat dissipation component (203) comprises a shielding cover (203a) arranged on one side of the housing (100), a driving motor (203b) arranged on the inner surface of the shielding cover (203a), a fan blade (203c) arranged in one end of the driving motor (203b), and a drying box (203d) arranged inside the shielding cover (203a).

6. The device for grounding busbar with grounding abnormality display function as claimed in claim 5, characterized in that: The outer surface of the housing (100) is provided with a wiring hole (102) and a ventilation hole (103); the fixing plate (202a) is fixedly connected to the outer surface of the housing (100); the through hole (202b) is aligned with the wiring hole (102); the through hole (202b) is linearly arranged along the outer surface of the fixing plate (202a); and the wiring hole (102) is linearly arranged along the outer surface of the housing (100).

7. The device for grounding busbar with grounding abnormality display function as claimed in claim 6, characterized in that: The outer surface of the shielding cover (203a) is fixedly connected to the outer surface of the outer shell (100), the ventilation holes (103) are arranged in the inner cavity of the shielding cover (203a), and the fan blades (203c) are arranged inside the outer shell (100).

8. The device for grounding busbar with grounding abnormality display function as claimed in claim 7, characterized in that: The outer surface of the drying box (203d) is provided with a box cover (206), the outer surface of the drying box (203d) is provided with ventilation holes (207), the number of the ventilation holes (207) is several, and the drying box (203d) is arranged below the ventilation hole (103).

9. The device for grounding busbar with grounding abnormality display function as claimed in claim 8, characterized in that: A support plate (205) is provided below the vent hole (207), as well as a first baffle plate (208) and a second baffle plate (209) provided below the support plate (205).

10. The device for grounding busbar with grounding abnormality display function as claimed in claim 9, characterized in that: The outer surface of the shielding cover (203a) is provided with a mounting groove (204), the outer surface of the drying box (203d) is sleeved and matched with the inner surface of the mounting groove (204), a support plate (205) is provided below the vent hole (207), and the drying box (203d) is arranged on the upper surface of the support plate (205).

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