Intelligent ceramic insulator

Abstract

The utility model discloses an intelligent ceramic insulator which comprises an insulator body (1), the insulator body (1) is hollow, and a high-voltage capacitor (2) and an acquisition circuit board (3) are fixedly installed at the two ends of the interior of the insulator body (1) respectively. The acquisition circuit board (3) is integrated with a power supply management circuit module (301), an envelope taking circuit module (302), a main control circuit module (303), a LoRa wireless communication module (304) and an onboard LoRa antenna (305) which are connected in sequence; and the high-voltage capacitor (2) is electrically connected with the power management circuit module (301). According to the utility model, through the built-in sensor for acquiring signals, electricity is taken from the high-voltage capacitor in the insulator and the signals are acquired, and the acquired signal data is sent to the background gateway through the built-in LoRa wireless module, so that the problem that in the prior art, when the sensor and the ceramic insulator are connected through a cable, the cable senses a space interference signal, and the signal data are transmitted to the background gateway through the LoRa wireless module is solved. And meanwhile, the installation and maintenance of the battery are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of ceramic insulators for high-voltage lines, and in particular relates to an intelligent ceramic insulator. Background Art

[0002] In the process of power transmission, in order to reduce the line loss on the cable, high voltage is required for power transmission. Insulators are needed to fix the cables where they need to be supported. Insulators are roughly divided into ceramic insulators and glass insulators, both of which have good support and insulation properties. In the process of cable production, sometimes defects may occur in the cables due to problems with the manufacturing process. These defects may cause partial discharge in the accumulated power transmission. When making cable terminal joints, partial discharge may also occur in the cable terminal joints due to problems with the manufacturing process. The higher the voltage level, the more likely the defects will cause partial discharge, which will eventually damage the cable.

[0003] In order to monitor the partial discharge of the cable itself and the cable terminal joints, the traditional practice is to lead out the signal line on the ceramic insulator supporting the cable to connect to the sensor. When there is a partial discharge signal, the signal will be transmitted to the sensor through the lead-out line of the ceramic insulator and collected by the sensor. The sensor then reports the collected data to the background. Utility Model Content

[0004] The purpose of the utility model is to provide an intelligent ceramic insulator. The intelligent ceramic insulator draws power and collects signals from the high-voltage capacitor inside the insulator through a built-in circuit module for collecting signals, and sends the collected signal data to the background gateway through a built-in LoRa wireless module, which solves the problem of spatial interference signals induced by cables when connecting sensors and ceramic insulators through cables in the prior art, and also eliminates the need for battery installation and maintenance.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An intelligent ceramic insulator comprises an insulator body, wherein the interior of the insulator body is hollow, and a high-voltage capacitor and a collection circuit board are respectively fixedly installed at two ends of the interior of the insulator body; the collection circuit board is integrated with a power management circuit module, an envelope circuit module, a main control circuit module, a LoRa wireless communication module and an onboard LoRa antenna which are connected in sequence; the high-voltage capacitor is electrically connected to the power management circuit module.

[0007] In the utility model, the ceramic insulator is made based on the conventional ceramic insulator, and has sufficient space and mounting holes reserved inside for installing high-voltage capacitors and acquisition circuit boards. The high-voltage capacitor is selected and made according to the voltage level of the manufactured ceramic insulator, installed inside the insulator, and the reserved wiring terminals are electrically connected to the acquisition circuit board to provide power supply and signal acquisition source to the acquisition circuit board.

[0008] The utility model further illustrates that the power management circuit module is used to regulate the high voltage electricity input by the high voltage capacitor and output the voltage required for the operation of each circuit module on the acquisition circuit board (the implementation principle is: high voltage is input to the PT (i.e., voltage transformer), and the alternating current is converted into direct current through the rectifier bridge circuit, and then through the voltage stabilizing circuit to provide a 3.3V DC power supply that can be used by the system to meet the voltage required for the operation of each circuit module on the acquisition circuit board), and at the same time, the input high voltage electrical signal is divided into one path and provided to the envelope taking circuit module.

[0009] The utility model further describes that the envelope extraction circuit module is used to perform impedance conversion, low-pass filtering, and envelope extraction on the input high-voltage electrical signal, filter out other non-target frequency signals from the hardware, and then input the filtered electrical signal to the main control circuit module.

[0010] The utility model further describes that the main control circuit module is a low-power MCU (single-chip microcomputer) with an integrated ADC (analog-to-digital converter), which is used for data collection and conversion, and transmits the electrical signal input from the envelope circuit module to the LoRa wireless communication module after analog-to-digital conversion.

[0011] The utility model further illustrates that the LoRa wireless communication module sends data to the LoRa background gateway through the onboard LoRa antenna.

[0012] The utility model further illustrates that the acquisition circuit board is fixedly installed at one end inside the insulator body through an insulating support.

[0013] The utility model further illustrates that screw holes are provided at both ends of the insulator body, and the high-voltage capacitor and the acquisition circuit board are fixedly mounted at the two ends inside the insulator body by screws respectively.

[0014] In the utility model, the ceramic insulator supports at least several high voltage levels such as 10kV, 35kV, and 100kV. In the conventional manufacturing process, an insulating support is added above the bottom mounting screw hole. The insulating support is used to install the acquisition circuit board. The inside of the insulating support needs to be tapped to fix the circuit board on the support with screws. After the circuit board is debugged, the bottom circuit board part needs to be sealed with glue to seal the circuit board inside the insulator.

[0015] The voltage level of the high-voltage capacitor needs to match the voltage level of the insulator, and the installation method that can be installed inside the insulator needs to be designed. The capacitor needs to reserve wiring terminals and use shielded wires to connect to the circuit board to provide power supply and signal acquisition to the circuit board.

[0016] The acquisition circuit board needs to be made into a circle with a hole in the middle. The circuit modules it contains are: power management circuit module, low-power MCU, LoRa wireless communication module and envelope circuit module. The power management circuit module regulates the voltage drawn from the capacitor to make the voltage meet the voltage required for the circuit board to work, and at the same time divides the input power into one path and provides it to the envelope circuit module; the envelope circuit module performs preliminary filtering on the input signal, filters out other non-target frequency signals from the hardware, and inputs the signal to the ADC; the ADC is integrated in the low-power MCU, and the program reads the data from the ADC and sends the data to the LoRa wireless communication module; the LoRa wireless communication module directly sends the data to the LoRa gateway via radio frequency.

[0017] The utility model has the following beneficial effects:

[0018] (1) Reduce installation steps. The data acquisition circuit board is built into the ceramic insulator and does not need to be installed outside the insulator. After the system is powered on, the sensor starts working, reducing the construction process.

[0019] (2) Strong anti-interference ability. Since the acquisition circuit board is built into the insulator, no additional cable connection is required, avoiding interference signals in the cable coupling space.

[0020] (3) No additional power supply system is required. The data acquisition circuit board uses the capacitor built into the insulator to obtain energy, without the need for external power supply or battery power supply, eliminating additional maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 The figure is a schematic diagram of the circuit module structure of the acquisition circuit board in the utility model.

[0023] Figure 3 It is a schematic diagram of the signal acquisition workflow in the utility model.

[0024] Figure 4 This is a circuit schematic diagram of the power management circuit module in the utility model.

[0025] Figure 5 This is a circuit schematic diagram of the envelope circuit module in the utility model.

[0026] Figure numerals: 1-insulator body, 2-high voltage capacitor, 3-collection circuit board, 301-power management circuit module, 302-envelope circuit module, 303-main control circuit module, 304-LoRa wireless communication module, 305-onboard LoRa antenna, 4-insulating support, 5-screw hole, 6-screw. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings. Example

[0028] As shown in the figure, an intelligent ceramic insulator includes an insulator body 1, the interior of the insulator body 1 is hollow, and a high-voltage capacitor 2 and a collection circuit board 3 are fixedly installed at both ends of the interior of the insulator body 1; the collection circuit board 3 is integrated with a power management circuit module 301, an envelope circuit module 302, a main control circuit module 303, a LoRa wireless communication module 304 and an onboard LoRa antenna 305 connected in sequence; the high-voltage capacitor 2 is electrically connected to the power management circuit module 301.

[0029] The acquisition circuit board 3 is fixedly mounted on one end of the inner part of the insulator body 1 through an insulating support 4 .

[0030] Screw holes 5 are provided at both ends of the insulator body 1 , and the high-voltage capacitor 2 and the acquisition circuit board 3 are fixedly mounted at the two ends of the inside of the insulator body 1 by screws 6 , respectively.

[0031] The following is a further description of each circuit module on the acquisition circuit board of this embodiment:

[0032] The power management circuit module 301 is used to regulate the high voltage power input by the high voltage capacitor, output the voltage required for the operation of each circuit module on the acquisition circuit board, and at the same time divide the input high voltage power signal into one path and provide it to the envelope extraction circuit module 302.

[0033] The circuit design of the power management circuit module 301 is as follows: Figure 4 As shown, it is mainly composed of a voltage transformer (PT), a rectifier bridge circuit (composed of diodes D1, D2, D3, D4), a voltage regulator chip, and capacitors C2, C3, C4, and finally outputs a 3.3V working voltage.

[0034] The envelope extraction circuit module 302 is used to perform impedance conversion, low-pass filtering, and envelope extraction on the input high-voltage electrical signal, filter out other signals of non-target frequencies from the hardware, and then input the filtered electrical signal to the main control circuit module 303.

[0035] The circuit design of the envelope circuit module is as follows Figure 5As shown, it is mainly composed of an impedance conversion circuit, a low-pass filtering circuit, and an envelope taking circuit.

[0036] The main control circuit module 303 is a low-power MCU with integrated ADC, which is used for data collection and conversion. It converts the electrical signal input from the envelope circuit module into digital form and then transmits it to the LoRa wireless communication module 304.

[0037] The LoRa wireless communication module 304 sends data to the LoRa backend gateway via the onboard LoRa antenna 305 .

[0038] Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation of the present invention. For ordinary technicians in the relevant technical field, other different forms of changes or modifications can be made based on the above description; it is not necessary and impossible to list all the implementation methods here; and the obvious changes or modifications derived from them are still within the scope of protection of the present invention.

Claims

1. An intelligent ceramic insulator, comprising an insulator body (1), characterized in that: The insulator body (1) is hollow inside, and a high-voltage capacitor (2) and a collection circuit board (3) are fixedly mounted at two ends of the insulator body (1) respectively; the collection circuit board (3) is integrated with a power management circuit module (301), an envelope circuit module (302), a main control circuit module (303), a LoRa wireless communication module (304) and an onboard LoRa antenna (305) which are connected in sequence; and the high-voltage capacitor (2) is electrically connected to the power management circuit module (301).

2. The smart ceramic insulator according to claim 1, characterized in that: The power management circuit module (301) is used to regulate the high voltage electricity input by the high voltage capacitor, output the voltage required for the operation of each circuit module on the acquisition circuit board, and simultaneously divide the input high voltage electrical signal into one path and provide it to the envelope extraction circuit module (302).

3. The smart ceramic insulator according to claim 2, characterized in that: The envelope extraction circuit module (302) is used to perform impedance conversion, low-pass filtering, and envelope extraction on the input high-voltage electrical signal, filter out other signals of non-target frequencies from the hardware, and then input the filtered electrical signal to the main control circuit module (303).

4. The intelligent ceramic insulator according to claim 3, characterized in that: The main control circuit module (303) is a low-power MCU with an integrated ADC, which is used for data collection and conversion, and transmits the electrical signal input from the envelope circuit module to the LoRa wireless communication module (304) after performing analog-to-digital conversion.

5. The intelligent ceramic insulator according to claim 4, characterized in that: The LoRa wireless communication module (304) sends data to the LoRa backend gateway via the onboard LoRa antenna (305).

6. The smart ceramic insulator according to claim 1, characterized in that: The acquisition circuit board (3) is fixedly mounted on one end inside the insulator body (1) via an insulating support (4).

7. The smart ceramic insulator according to claim 1, characterized in that: Screw holes (5) are provided at both ends of the insulator body (1), and the high-voltage capacitor (2) and the acquisition circuit board (3) are fixedly mounted at the two ends inside the insulator body (1) by means of screws (6) respectively.

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