Measuring device capable of remotely measuring capacitive current of lead in wireless manner

Abstract

The utility model relates to the technical field of lead capacitive current measurement, and discloses a measuring device capable of remotely measuring lead capacitive current wirelessly, which comprises an insulating operating rod and a clamp-head-shaped current transformer mounted at one end of the insulating operating rod. A controller shell is mounted at the bottom of the clamp-head-shaped current transformer, a control circuit board electrically connected with the clamp-head-shaped current transformer is arranged in the controller shell, and the bottom of the controller shell is connected with the insulating operating rod through a rotary joint; and the control circuit board is wirelessly connected with a remote control display. According to the measuring device capable of remotely and wirelessly measuring the capacitive current of the wire, the insulated operating rod is matched with the clamp-head-shaped current transformer to carry out remote measurement, and data is wirelessly transmitted to the remote control display, so that the danger that an operator gets close to an electrified body is avoided, and the safety of live working is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of conductor capacitance current measurement, in particular to a measuring device capable of remotely and wirelessly measuring conductor capacitance current. Background Art

[0002] With the continuous development of power systems, the construction and application of high-voltage lines of 35kV and above have gradually increased. The widespread use of renewable energy, in particular, has led to a peak in the construction of 35kV lines. To ensure the safe and stable operation of power systems, current detection and monitoring of high-voltage lines is particularly important. However, traditional handheld ammeters pose a safety hazard when operating high-voltage lines, as they place operators too close to live parts. While the use of an insulated operating rod in conjunction with the ammeter improves safety, the lack of real-time current data still presents operational inconvenience and safety risks. Utility Model Content

[0003] To solve the above problems, the utility model provides a measuring device that can remotely and wirelessly measure the capacitance and current of conductors. It is particularly suitable for live operations on high-voltage lines of 35kV and above. It can realize real-time online monitoring of the current of the operating line or bypass cable, and transmit the measured data to the receiving end, reducing the risk of electric shock accidents.

[0004] The technical solution adopted by this utility model is:

[0005] A measuring device capable of remotely and wirelessly measuring the capacitance and current of a conductor comprises an insulating operating rod and a clamp-type current transformer mounted at one end of the insulating operating rod; a controller housing is mounted at the bottom of the clamp-type current transformer, a control circuit board electrically connected to the clamp-type current transformer is disposed within the controller housing, and the bottom of the controller housing is connected to the insulating operating rod via a rotary joint; and the control circuit board is wirelessly connected to a remote control display.

[0006] Furthermore, the rod body of the insulating operating rod is a telescopic rod body.

[0007] Furthermore, the rotary joint includes a first rotating connecting plate installed at the bottom of the controller housing, a second rotating connecting plate installed at one end of the insulating operating rod, and a rotating positioning bolt; the opposite sides of the first rotating connecting plate and the second rotating connecting plate are provided with teeth that can engage with each other; the rotating positioning bolt passes through the second rotating connecting plate and the first rotating connecting plate in sequence and then is threadedly connected to the butterfly nut.

[0008] Furthermore, a battery is provided in the controller housing, and the battery is connected to the control circuit board and the clamp-type current transformer.

[0009] Furthermore, the control circuit board is provided with a sampling operational amplifier circuit, a voltage stabilizing circuit, an MCU main control circuit, a WiFi module, and a wireless transmission circuit;

[0010] The clamp-type current transformer is connected to the sampling operational amplifier circuit through the control circuit board, the sampling operational amplifier circuit is connected to the voltage stabilizing circuit and the MCU main control circuit through the control circuit board, the voltage stabilizing circuit is connected to the MCU main control circuit through the control circuit board, the MCU main control circuit is connected to the WiFi module through the control circuit board, and the WiFi module is connected to the wireless transmission circuit through the control circuit board.

[0011] The beneficial effects of the utility model are:

[0012] 1. Traditional handheld ammeters require workers to be close to high-voltage live objects for measurement, which poses a serious risk of electric shock. The above-mentioned remote wireless measurement device for conductor capacitance current uses an insulated operating rod and a clamp-type current transformer to perform long-distance measurement and wirelessly transmit the data to a remote control display, eliminating the danger of workers being close to live objects and improving the safety of live work.

[0013] 2. When using an insulated operating rod in conjunction with a traditional ammeter, operators cannot immediately observe the current data, which makes operation inconvenient and prone to errors. The above-mentioned measuring device capable of remote wireless telemetry of conductor capacitance and current reads and displays current data in real time through a remote control display, ensuring that operators can remotely monitor and obtain data, thereby improving the convenience and accuracy of operation.

[0014] 3. Traditional ammeters lack remote monitoring capabilities. The aforementioned device, which can remotely and wirelessly measure the capacitance and current of conductors, can wirelessly transmit measurement data to a background receiver through a built-in control circuit board, enabling data storage and remote monitoring.

[0015] 4. Traditional handheld ammeters lack the flexibility to adapt to different working environments and needs, and they need to be modified before they can be assembled with the insulating operating rod. The above-mentioned measuring device for remote wireless measurement of conductor capacitance and current uses a retractable insulating operating rod and a rotary joint, which can flexibly adjust the operating angle and length to adapt to current measurement operations at different heights and angles, thereby improving the applicability and flexibility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1This is a schematic diagram of the overall structure of the measuring device of the utility model;

[0018] Figure 2 and Figure 3 This is an enlarged view of the local structure of the measuring device of the utility model;

[0019] Figure 4 This is a circuit diagram of a sampling operational amplifier circuit of the utility model;

[0020] Figure 5 This is a circuit diagram of the voltage stabilizing circuit of the utility model;

[0021] Figure 6 This is a circuit diagram of the MCU main control circuit of the utility model;

[0022] Figure 7 This is the circuit diagram of the WiFi module of the utility model;

[0023] Figure 8 This is a circuit diagram of the wireless transmission circuit of the utility model;

[0024] Markings in the figure: 1. Insulated operating rod; 2. Clamp-type current transformer; 3. Controller housing; 4. Control circuit board; 5. Rotary joint; 6. Remote control display; 7. First rotating connecting piece; 8. Second rotating connecting piece; 9. Rotary positioning bolt; 10. Butterfly nut. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them.

[0026] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] This embodiment provides a device for measuring the capacitance and current of a conductor remotely and wirelessly; Figure 1As shown, the measuring device capable of remotely and wirelessly measuring the capacitance and current of a conductor comprises an insulating operating rod 1 and a clamp-type current transformer 2 installed at one end of the insulating operating rod 1. The clamp-type current transformer 2 is a commercially available finished device, such as the ETCR9200-60KV clamp-type current transformer; Figure 1 and Figure 2 As shown, a controller housing 3 is installed at the bottom of the clamp-type current transformer 2, and a control circuit board 4 electrically connected to the clamp-type current transformer 2 is provided in the controller housing 3; the bottom of the controller housing 3 is connected to the insulating operating rod 1 through a rotary joint 5; the control circuit board 4 is wirelessly connected to a remote control display 6.

[0028] During use, the clamp-type current transformer 2 is operated by the insulating operating rod 1, so that the high-voltage live wire to be measured enters the clamp of the clamp-type current transformer 2; the clamp-type current transformer 2 collects the current signal on the collection wire in real time and transmits it to the control circuit board 4; the control circuit board 4 processes the current signal accordingly and transmits it to the remote control display 6, which displays the wire capacitance current in real time; in the above process, the danger of the operator approaching the live object is avoided, the safety of live operation is improved, and at the same time the operator can remotely monitor and obtain data, which improves the convenience and accuracy of operation.

[0029] Furthermore, as the preferred technical solution of this embodiment; in order to adapt to the flexibility of different working environments and needs, such as Figure 3 As shown, the rod body of the insulating operating rod 1 in this embodiment is a telescopic rod body. The telescopic insulating operating rod 1 is a prior art, and the telescopic structure of the rod body is not described in detail here.

[0030] At the same time, if Figure 2 and Figure 3 As shown, the rotary joint 5 in this embodiment includes a first rotary connecting piece 7 installed at the bottom of the controller housing 3, a second rotary connecting piece 8 installed at one end of the insulating operating rod 1, and a rotary positioning bolt 9. The opposite sides of the first rotary connecting piece 7 and the second rotary connecting piece 8 are provided with teeth that can engage with each other; the rotary positioning bolt 9 passes through the second rotary connecting piece 8 and the first rotary connecting piece 7 in sequence and then is threadedly connected to the butterfly nut 10. The rotary joint 5 can be used to position and rotate the clamp-type current transformer 2 relative to the insulating operating rod 1 within a range of 180°; when the angle of the clamp-type current transformer 2 needs to be adjusted, the butterfly nut 10 is rotated in the reverse direction to disengage the first rotary connecting piece 7 and the second rotary connecting piece 8, and the clamp-type current transformer 2 can be rotated; after the adjustment is completed, the butterfly nut 10 is rotated in the forward direction to restore the first rotary connecting piece 7 and the second rotary connecting piece 8 to the engaged state, thereby forming a positioning position.

[0031] Furthermore, considering the power supply problem of the clamp-type current transformer 2 and the control circuit board 4, in this embodiment, a battery is provided in the controller housing 3, and the battery is connected to the control circuit board 4 and the clamp-type current transformer 2 to power the control circuit board 4 and the clamp-type current transformer 2.

[0032] To facilitate understanding of the working principle of the control circuit board 4 of this embodiment, a detailed description is given below:

[0033] The control circuit board 4 in this embodiment is provided with a sampling amplifier circuit, a voltage stabilizing circuit, an MCU main control circuit, a WiFi module, and a wireless transmission circuit. Figure 4 As shown, the voltage stabilizing circuit is as Figure 5 As shown, the MCU main control circuit is as follows Figure 6 As shown, the WiFi module is Figure 7 As shown, the wireless transmission circuit is as follows Figure 8 As shown; the clamp-type current transformer 2 is connected to the sampling operational amplifier circuit through the control circuit board 4, the sampling operational amplifier circuit is connected to the voltage stabilizing circuit and the MCU main control circuit through the control circuit board 4, the voltage stabilizing circuit is connected to the MCU main control circuit through the control circuit board 4, the MCU main control circuit is connected to the WiFi module through the control circuit board 4, and the WiFi module is connected to the wireless transmission circuit through the control circuit board 4.

[0034] The clamp-type current transformer 2 collects the current signal from the conductor in real time and directly connects it to the CN2 interface of the sampling amplifier circuit. The received current signal is amplified and processed by the sampling amplifier circuit, improving its identifiability for subsequent circuits. The sampling amplifier circuit is also powered by a voltage regulator circuit to ensure stable operation and transmit the processed current signal to the MCU main control circuit. The voltage regulator circuit provides a stable 3V voltage to the sampling amplifier circuit and also provides the necessary power for the MCU main control circuit. The MCU main control circuit receives the amplified signal from the sampling amplifier circuit, i.e., the current value, and processes it. The processed data is then wirelessly transmitted via the WiFi module. The WiFi module receives the processed current data through the MCU main control circuit and sends it to the wireless transmission circuit, which then transmits it to the remote control display 6. The remote control display 6 then reads and displays the current data in real time, enabling operators to remotely monitor and access data, improving operational convenience and accuracy.

[0035] In addition, the MCU main control circuit can also conduct wireless data transmission with the background receiver through the WiFi module, realizing background data storage and background remote monitoring of the current data of high-voltage live wires.

[0036] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A device for remotely and wirelessly measuring the capacitance and current of a conductor, characterized in that: The invention comprises an insulating operating rod and a clamp-type current transformer installed at one end of the insulating operating rod; a controller housing is installed at the bottom of the clamp-type current transformer, a control circuit board electrically connected to the clamp-type current transformer is provided in the controller housing, and the bottom of the controller housing is connected to the insulating operating rod via a rotary joint; the control circuit board is wirelessly connected to a remote control display.

2. The device for remotely and wirelessly measuring the capacitance and current of a conductor according to claim 1, characterized in that: The rod body of the insulating operating rod is a telescopic rod body.

3. The device for remotely and wirelessly measuring the capacitance and current of a conductor according to claim 1, characterized in that: The rotary joint includes a first rotating connecting piece installed at the bottom of the controller housing, a second rotating connecting piece installed at one end of the insulating operating rod, and a rotating positioning bolt; the opposite sides of the first rotating connecting piece and the second rotating connecting piece are provided with teeth that can engage with each other; the rotating positioning bolt passes through the second rotating connecting piece and the first rotating connecting piece in sequence and then is threadedly connected to the butterfly nut.

4. The device for remotely and wirelessly measuring the capacitance and current of a conductor according to claim 1, characterized in that: A battery is also provided in the controller housing, and the battery is connected to the control circuit board and the clamp-shaped current transformer.

5. The device for remotely and wirelessly measuring the capacitance and current of a conductor according to claim 1, characterized in that: The control circuit board is provided with a sampling operational amplifier circuit, a voltage stabilizing circuit, an MCU main control circuit, a WiFi module, and a wireless transmission circuit; The clamp-type current transformer is connected to the sampling operational amplifier circuit through the control circuit board, the sampling operational amplifier circuit is connected to the voltage stabilizing circuit and the MCU main control circuit through the control circuit board, the voltage stabilizing circuit is connected to the MCU main control circuit through the control circuit board, the MCU main control circuit is connected to the WiFi module through the control circuit board, and the WiFi module is connected to the wireless transmission circuit through the control circuit board.

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