Intelligent phase insulation monitoring plug

Abstract

The utility model belongs to power transmission and distribution technical field especially relates to a kind of intelligent phase insulation monitoring plug, for providing insulation protection and detecting its value for conductor, including integrally cast main body, its inside is sequentially connected with front end guiding portion, middle end function portion and rear end processing portion along axial direction.It is provided with conductor containing passage along axial direction for front end guiding portion, and its end is sealed arrangement, for conductor to connect into.It is embedded with voltage acquisition module and temperature acquisition module for middle end function portion.The rear end processing portion includes micro-processing unit and communication module, and the input of micro-processing unit is respectively electrically connected with voltage acquisition module and temperature acquisition module, and communication module is connected with the output of micro-processing unit, to transmit data to remote terminal.Integrally cast molding process not only eliminates the interface air gap problem that traditional combination structure can exist, but also can maintain stable mechanical and electrical performance, ensure monitoring accuracy.

Description

Technical Field

[0001] This invention belongs to the field of power transmission and distribution technology, and in particular relates to an intelligent phase insulation monitoring plug. Background Technology

[0002] In high-voltage circuits such as ring main units and gas-insulated switchgear, the main function of phase insulation plugs is to provide insulation protection for the circuit. They effectively isolate conductors (cables) of different phases, preventing electrical accidents caused by direct contact or short circuits between conductors. Traditional plug shells are integrally cast with epoxy resin. The strong shielding effect of the epoxy resin casting makes it difficult for external sensors to penetrate and obtain internal voltage fluctuation data, resulting in large measurement errors. Furthermore, conductor transmission involves temperature fluctuations, and traditional plugs lack integrated temperature sensing modules, relying solely on manual inspection or offline detection. This leads to the inability to promptly warn of abnormal temperature rises. For example, localized high temperatures caused by poor contact at T-type cable joints in ring main units often result in melting accidents due to monitoring lag. For high-voltage lines with safety hazards, the lack of communication modules makes fault warning and handling impossible. Moreover, traditional plugs generally lack communication modules, making it impossible to upload temperature, voltage, and other data to a cloud platform in real time. Summary of the Invention

[0003] The purpose of this invention is to provide an intelligent phase insulation monitoring plug, which aims to solve the technical problem of non-intelligent plugs in the prior art.

[0004] To achieve the above objectives, this invention provides an intelligent phase insulation monitoring plug for providing insulation protection to conductors and detecting their values. It includes a monolithically cast main body, with a front guide section, a middle functional section, and a rear processing section connected sequentially along the axial direction inside. The front guide section has an axially penetrating conductor receiving channel, with a sealed end for conductor insertion and connection. The middle functional section houses a voltage acquisition module and a temperature acquisition module. The rear processing section includes a microprocessor unit and a communication module. The input terminals of the microprocessor unit are electrically connected to the voltage and temperature acquisition modules, respectively, and the communication module is connected to the output terminal of the microprocessor unit. Data is transmitted to a remote terminal via a communication wire located on the rear processing section.

[0005] Furthermore, the conductor receiving channel is connected to a through threaded portion, the end of which is sealed, and the conductor extends into and abuts against the end of the threaded portion; a copper rod is connected to one end of the threaded portion relative to the conductor, one end of the copper rod is connected to a copper plate, and the other end of the copper plate is connected to the voltage acquisition module and the temperature acquisition module.

[0006] Furthermore, the non-contact voltage acquisition module includes a voltage-collecting capacitor connected to a copper plate, and a power-collecting function module located in the back-end processing unit; the temperature acquisition module is located on one side of the voltage-collecting capacitor.

[0007] Furthermore, the power extraction module includes a first filtering module, a first operational amplifier module, a first signal conditioning module, and a first output module. The first end of the voltage extraction capacitor is in contact with the copper plate; the second end of the voltage extraction capacitor is connected to the input end of the first filtering module; the output end of the first filtering module is connected to the input end of the first operational amplifier module; the output end of the first operational amplifier module is connected to the input end of the first signal conditioning module; and the output end of the first signal conditioning module is connected to the first output module.

[0008] Furthermore, the contact-type voltage acquisition module includes a voltage sampling capacitor located on a copper plate and a sampling function module located in the back-end processing unit. The voltage sampling capacitor has a hollow ring structure, and the temperature acquisition module is located in the middle of the voltage sampling capacitor. The voltage sampling capacitor has electrodes at the top and bottom, and the high voltage is divided into a low voltage after passing through the voltage sampling capacitor.

[0009] Furthermore, the sampling function module includes a second filtering module, a second operational amplifier module, a second signal conditioning module, and a second output module. The first end of the voltage sampling capacitor is in contact with the copper plate; the second end of the voltage sampling capacitor is connected to the input end of the second filtering module; the output end of the second filtering module is connected to the input end of the second operational amplifier module; the output end of the second operational amplifier module is connected to the input end of the second signal conditioning module; and the output end of the second signal conditioning module is connected to the second output module.

[0010] Furthermore, the second signal conditioning module includes an eighth resistor, a ninth resistor, and a nineteenth capacitor. The first end of the eighth resistor is connected to the output terminal of the operational amplifier; the second end of the eighth resistor is connected to the first end of the ninth resistor, the first end of the nineteenth capacitor, and the signal output interface of the second output module; the second end of the ninth resistor and the second end of the nineteenth capacitor are grounded.

[0011] Furthermore, the temperature acquisition module includes a heat-conducting core rod located on the copper plate and a thermistor disposed on the heat-conducting core rod. The heat generated by the conductor is sequentially conducted to the copper rod, copper plate, heat-conducting core rod and the thermistor. The thermistor is electrically connected to the microprocessor unit to transmit the signal value of the change due to heat.

[0012] Furthermore, the heat-conducting core rod is formed using aluminum nitride with a purity of 99%.

[0013] Furthermore, the communication module can use either 4G or Bluetooth transmission for communication.

[0014] The intelligent phase insulation monitoring plug provided in this invention has at least one of the following technical effects:

[0015] This patented intelligent phase insulation monitoring plug significantly improves the intelligence level of power transmission and distribution equipment condition monitoring through its innovative integrated design. Its integrated casting process not only eliminates the interface air gap problem that may exist in traditional combined structures, but also maintains stable mechanical and electrical performance. By synchronously embedding high-precision voltage and temperature sensors, it can promptly sense the conductor's condition. This voltage acquisition module is specifically designed for medium- and high-voltage power transmission and distribution scenarios, accurately sensing a wide range of primary voltages from 10KV to 33.8KV. Through high-precision electromagnetic isolation technology, it converts dangerous high voltages into a safe 3.25V secondary signal output. The temperature sensor has its own power supply and can achieve autonomous signal transmission. Combined with the edge computing capabilities of the built-in microprocessor, it can complete data and feature extraction locally and send the data to the terminal via the communication module, ensuring monitoring accuracy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the non-contact overall structure of the intelligent phase insulation monitoring plug provided in an embodiment of the present invention;

[0018] Figure 2 This is a disassembly diagram of the non-contact type of the intelligent phase insulation monitoring plug provided in an embodiment of the present invention;

[0019] Figure 3 This is a non-contact circuit diagram of the intelligent phase insulation monitoring plug provided in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the overall structure of the intelligent phase insulation monitoring plug provided in an embodiment of the present invention;

[0021] Figure 5 This is a disassembly diagram of the contact type of the intelligent phase insulation monitoring plug provided in an embodiment of the present invention;

[0022] Figure 6 The circuit diagram of the contact type of the intelligent phase insulation monitoring plug provided in the embodiment of the present invention.

[0023] The following are the labeling elements in the figure:

[0024] 100. Main body;

[0025] 200. Front guide section; 210. Conductor receiving channel; 211. Threaded section; 212. Copper rod; 213. Copper plate;

[0026] 300. Mid-range functional unit; 310. Voltage acquisition module; 320. Temperature acquisition module; 321. Thermally conductive core rod; 322. Thermistor;

[0027] 400. Back-end processing unit; 410. Microprocessor unit; 420. Communication module; 430. Communication wire. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.

[0029] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0032] In the first embodiment of the present invention, as Figure 1-3As shown, an intelligent phase insulation monitoring plug is provided for providing insulation protection to conductors and detecting their values. It includes a monolithically cast main body 100, inside which a front guide section 200, a middle functional section 300, and a rear processing section 400 are sequentially connected along the axial direction. The front guide section 200 has an axially penetrating conductor receiving channel 210, the end of which is sealed for conductor insertion and connection. The middle functional section 300 houses a voltage acquisition module 310 and a temperature acquisition module 320. The rear processing section 400 includes a microprocessor unit 410 and a communication module 420. The input terminals of the microprocessor unit 410 are electrically connected to the voltage acquisition module 310 and the temperature acquisition module 320, respectively. The communication module 420 is connected to the output terminal of the microprocessor unit and is connected via a communication wire 430 on the rear processing section 400 to transmit data to a remote terminal.

[0033] Specifically, the intelligent phase insulation monitoring plug proposed in this patent significantly improves the intelligence level of power transmission and distribution equipment condition monitoring through innovative integrated design. Its integrated casting process not only eliminates the interface air gap problem that may exist in traditional combined structures, but also maintains stable mechanical and electrical performance. By synchronously embedding high-precision voltage and temperature sensors, the voltage acquisition module 310 can promptly sense the conductor's condition. Specifically designed for medium- and high-voltage power transmission and distribution scenarios, it can accurately sense primary voltages across a wide range of 10KV-33.8KV. Through high-precision electromagnetic isolation technology, it converts dangerous high voltages into a safe 3.25V secondary signal output. The temperature sensor has its own power supply and can achieve autonomous signal transmission. Combined with the edge computing capabilities of the built-in microprocessor, it can complete data and feature extraction locally and send the data to the terminal via the communication module 420, ensuring monitoring accuracy.

[0034] Furthermore, such as Figure 1-3 As shown, the conductor receiving channel 210 is connected to a through threaded portion 211, the end of which is sealed. The conductor extends into and abuts against the end of the threaded portion 211. A copper rod 212 is connected to one end of the threaded portion 211 relative to the conductor. One end of the copper rod 212 is connected to a copper plate 213. The other end of the copper plate 213 is connected to the voltage acquisition module 310 and the temperature acquisition module 320. Specifically, the threaded portion 211 is also made of copper. When the conductor contacts the threaded portion 211, heat and voltage are conducted to the voltage acquisition module 310 and the temperature acquisition module 320 through the conduction mechanism of the threaded portion 211-copper rod 212-copper plate 213.

[0035] In the second embodiment, as Figure 1-3As shown, the non-contact voltage acquisition module 310 includes a voltage-collecting capacitor connected to the copper plate 213 and a power-collecting function module located in the back-end processing unit 400; the temperature acquisition module 320 is disposed on one side of the voltage-collecting capacitor. The power-collecting function module includes a first filtering module, a first operational amplifier module, a first signal conditioning module, and a first output module. The first end of the voltage-collecting capacitor abuts against the copper plate 213; the second end of the voltage-collecting capacitor is connected to the input end of the first filtering module; the output end of the first filtering module is connected to the input end of the first operational amplifier module; the output end of the first operational amplifier module is connected to the input end of the first signal conditioning module; and the output end of the first signal conditioning module is connected to the first output module.

[0036] Specifically, the non-contact voltage acquisition module 310 mainly uses a voltage-collecting capacitor as a medium for isolated voltage transmission. The advantage of the voltage-collecting capacitor is that it obtains energy from the power supply, improving the stability of the power supply. The second end of the voltage-collecting capacitor is connected to the input end of the first filter module, which filters out noise and AC components in the stepped-down input signal. The output end of the first filter module is connected to the input end of the first operational amplifier module, which amplifies the filtered input signal for easy observation. The output end of the first operational amplifier module is connected to the input end of the first signal conditioning module, which is used to determine the output impedance of the circuit and calibrate the phase difference of the operational amplifier output signal. The output end of the first signal conditioning module is connected to the first output module, which finally transmits the monitored voltage data to the terminal for real-time monitoring via the communication module 420.

[0037] Furthermore, such as Figure 3 As shown, the first signal conditioning module includes an eighth resistor R8, a ninth resistor R9, and a nineteenth capacitor C19. The first terminal of the eighth resistor R8 is connected to the output terminal of the operational amplifier; the second terminal of the eighth resistor R8 is connected to the first terminal of the ninth resistor R9, the first terminal of the nineteenth capacitor C19, and the signal output interface of the first output module; the second terminals of the ninth resistor R9 and the nineteenth capacitor C19 are grounded. Specifically, the first terminal of the eighth resistor R8 is connected to the output terminal of operational amplifier U5; the second terminal of the eighth resistor R8 is connected to the first terminal of the ninth resistor R9, the first terminal of the nineteenth capacitor C19, and the signal output interface of the first output module; the second terminals of the ninth resistor R9 and the nineteenth capacitor C19 are grounded. The ninth resistor R9 and the nineteenth capacitor C19 together form an RC parallel network, used to determine the output impedance and calibrate the output phase difference; the eighth resistor R8 and the ninth resistor R9 are used to adjust the output voltage amplitude.

[0038] Furthermore, such as Figure 3As shown, the first filtering module includes a sixth resistor R6, a fifteenth capacitor C15, and a sixteenth capacitor C16. The first terminal of the sixth resistor R6 is connected to the second terminal of the voltage divider capacitor C; the second terminal of the sixth resistor R6 is connected to the first terminals of the fifteenth capacitor C15 and the sixteenth capacitor C16, and to the input terminal of the operational amplifier module; the second terminals of the fifteenth capacitor C15 and the sixteenth capacitor C16 are grounded. The sixth resistor R6 reduces current noise and common-mode noise, while also improving the stability and reliability of the circuit. The fifteenth capacitor C15 and the sixteenth capacitor C16 together form a parallel multi-capacitor system, used to filter out noise and AC components in the stepped-down input signal.

[0039] Furthermore, such as Figure 3 As shown, the first operational amplifier module includes an eighteenth capacitor C18, a fourth resistor R4, a fourteenth capacitor C14, a seventeenth capacitor C17, a seventh resistor R7, a fifth resistor R5, and an operational amplifier U5. Specifically: the negative input gain adjustment pin RG- of operational amplifier U5 is connected to the first terminal of the fourth resistor R4; the positive input gain adjustment pin RG+ of operational amplifier U5 is connected to the second terminal of the fourth resistor R4; the differential input negative pin IN- of operational amplifier U5 is connected to the second terminal of the fifth resistor R5; the first terminal of the fifth resistor R5 is grounded; and the differential input positive pin IN+ of operational amplifier U5 is connected to the second terminal of the sixth resistor R6. The operational amplifier U5's negative power supply pin VS- is connected to the second terminal of the eighteenth capacitor C18 and the negative power supply VEE; the first terminal of the eighteenth capacitor C18 is grounded; the operational amplifier U5's positive power supply pin VS+ is connected to the first terminal of the fourteenth capacitor C14 and the positive power supply VCC; the second terminal of the fourteenth capacitor C14 is grounded; the operational amplifier U5's reference voltage input pin REF is connected to the first terminal of the seventeenth capacitor C17 and the first terminal of the seventh resistor R7; the second terminals of the seventeenth capacitor C17 and the seventh resistor R7 are grounded; the operational amplifier U5's output pin OUT is connected to the first terminal of the eighth resistor R8. The fourth resistor R4 and the fifth resistor R5 are op-amp adjustment resistors, jointly adjusting the operational amplifier's gain. The seventh resistor R7 and the seventeenth capacitor C17 together form an RC parallel network to provide the midpoint voltage; the fourteenth capacitor C14 and the eighteenth capacitor C18 are filter capacitors, used to filter out noise and AC components in the positive and negative power supplies, respectively.

[0040] Furthermore, such as Figure 3As shown, the first output module also includes a power port VCC and a ground port GND. In a specific embodiment of the present invention, the first output module does not need to perform signal conditioning function, but only outputs the output signal after it has been adjusted by the signal conditioning module. Therefore, in order to minimize the circuit structure, the first output module is organically integrated with the power module. The first output module can be a socket with an output interface, a power interface and a ground interface.

[0041] In the third embodiment, as Figure 4-6 As shown, the contact-type voltage acquisition module 310 includes a voltage sampling capacitor located on the copper plate 213 and a sampling function module located in the back-end processing unit 400. The voltage sampling capacitor has a hollow ring structure, and the temperature acquisition module 320 is located at the middle of the voltage sampling capacitor. The voltage sampling capacitor has electrodes at the top and bottom, and the high voltage is divided into a low voltage after passing through the voltage sampling capacitor. The sampling function module includes a second filtering module, a second operational amplifier module, a second signal conditioning module, and a second output module. The first end of the voltage sampling capacitor abuts against the copper plate 213; the second end of the voltage sampling capacitor is connected to the input end of the second filtering module; the output end of the second filtering module is connected to the input end of the second operational amplifier module; the output end of the second operational amplifier module is connected to the input end of the second signal conditioning module; and the output end of the second signal conditioning module is connected to the second output module.

[0042] Specifically, the advantages of the voltage sampling capacitor are high accuracy and low signal distortion. The conductor extends into the conductor receiving channel 210, and the first end of the voltage sampling capacitor is electrically connected to the conductor. The voltage sampling capacitor is used to reduce the voltage of the high-voltage input signal; otherwise, the 10KV, 50Hz high-voltage input signal used in this specific embodiment of the invention will overvoltage and break down the operational amplifier, damaging the circuit components. The second end of the voltage sampling capacitor is connected to the input end of the second filter module, which filters out noise and AC components in the stepped-down input signal. The output end of the second filter module is connected to the input end of the second operational amplifier module, which amplifies the second-filtered input signal for easy observation. The output end of the second operational amplifier module is connected to the input end of the second signal conditioning module, which is used to determine the output impedance of the circuit and calibrate the phase difference of the operational amplifier output signal. The output end of the second signal conditioning module is connected to the second output module, which finally transmits the monitored voltage data to the terminal for real-time monitoring via the communication module 420.

[0043] Furthermore, such as Figure 4-6As shown, the second signal conditioning module includes an eighth resistor R8, a ninth resistor R9, and a nineteenth capacitor C19. The first terminal of the eighth resistor R8 is connected to the output terminal of the operational amplifier; the second terminal of the eighth resistor R8 is connected to the first terminal of the ninth resistor R9, the first terminal of the nineteenth capacitor C19, and the signal output interface of the second output module; the second terminals of the ninth resistor R9 and the nineteenth capacitor C19 are grounded. Specifically, the first terminal of the eighth resistor R8 is connected to the output terminal of operational amplifier U5; the second terminal of the eighth resistor R8 is connected to the first terminal of the ninth resistor R9, the first terminal of the nineteenth capacitor C19, and the signal output interface of the second output module; the second terminals of the ninth resistor R9 and the nineteenth capacitor C19 are grounded. The ninth resistor R9 and the nineteenth capacitor C19 together form an RC parallel network, used to determine the output impedance and calibrate the output phase difference; the eighth resistor R8 and the ninth resistor R9 are used to adjust the output voltage amplitude.

[0044] Furthermore, such as Figure 4-6 As shown, the second filtering module includes a sixth resistor R6, a fifteenth capacitor C15, and a sixteenth capacitor C16. The first terminal of the sixth resistor R6 is connected to the second terminal of the voltage divider capacitor C; the second terminal of the sixth resistor R6 is connected to the first terminals of the fifteenth capacitor C15 and the sixteenth capacitor C16, and to the input terminal of the operational amplifier module; the second terminals of the fifteenth capacitor C15 and the sixteenth capacitor C16 are grounded. The sixth resistor R6 reduces current noise and common-mode noise, while also improving the stability and reliability of the circuit. The fifteenth capacitor C15 and the sixteenth capacitor C16 together form a parallel multi-capacitor circuit, used to filter out noise and AC components in the stepped-down input signal.

[0045] Furthermore, such as Figure 4-6As shown, the second operational amplifier module includes an eighteenth capacitor C18, a fourth resistor R4, a fourteenth capacitor C14, a seventeenth capacitor C17, a seventh resistor R7, a fifth resistor R5, and an operational amplifier U5. Specifically: the negative input gain adjustment pin RG- of operational amplifier U5 is connected to the first terminal of the fourth resistor R4; the positive input gain adjustment pin RG+ of operational amplifier U5 is connected to the second terminal of the fourth resistor R4; the differential input negative pin IN- of operational amplifier U5 is connected to the second terminal of the fifth resistor R5; the first terminal of the fifth resistor R5 is grounded; and the differential input positive pin IN+ of operational amplifier U5 is connected to the second terminal of the sixth resistor R6. The operational amplifier U5's negative power supply pin VS- is connected to the second terminal of the eighteenth capacitor C18 and the negative power supply VEE; the first terminal of the eighteenth capacitor C18 is grounded; the operational amplifier U5's positive power supply pin VS+ is connected to the first terminal of the fourteenth capacitor C14 and the positive power supply VCC; the second terminal of the fourteenth capacitor C14 is grounded; the operational amplifier U5's reference voltage input pin REF is connected to the first terminal of the seventeenth capacitor C17 and the first terminal of the seventh resistor R7; the second terminals of the seventeenth capacitor C17 and the seventh resistor R7 are grounded; the operational amplifier U5's output pin OUT is connected to the first terminal of the eighth resistor R8. The fourth resistor R4 and the fifth resistor R5 are op-amp adjustment resistors, jointly adjusting the operational amplifier's gain. The seventh resistor R7 and the seventeenth capacitor C17 together form an RC parallel network to provide the midpoint voltage; the fourteenth capacitor C14 and the eighteenth capacitor C18 are filter capacitors, used to filter out noise and AC components in the positive and negative power supplies, respectively.

[0046] Furthermore, such as Figure 4-6 As shown, the second output module also includes a power port VCC and a ground port GND. In a specific embodiment of the present invention, the second output module does not need to perform signal conditioning function, but only outputs the output signal after it has been adjusted by the signal conditioning module. Therefore, in order to minimize the circuit structure, the second output module is organically integrated with the power module. The second output module can be a socket with an output interface, a power interface and a ground interface.

[0047] In the fourth embodiment, such as Figure 3As shown, the temperature acquisition module 320 includes a heat-conducting core rod 321 located on a copper plate 213 and a thermistor 322 disposed on the heat-conducting core rod 321. The threaded portion 211 is also made of copper. The heat generated by the conductor is sequentially conducted to the threaded portion 211, the copper rod 212, the copper plate 213, the heat-conducting core rod 321, and the thermistor 322. The thermistor 322 is electrically connected to the microprocessor unit to transmit the signal value of the change due to heat. The heat-conducting core rod 321 is formed of aluminum nitride with a purity of 99%. Heat is conducted through the threaded portion 211 to the heat-conducting core rod 321, and then to the thermistor 322, forming a heat transfer chain of "heat source - copper rod 212 - copper plate 213 - heat-conducting core rod 321 - thermistor 322".

[0048] Furthermore, the communication module 420 can communicate using either 4G or Bluetooth transmission.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intelligent phase insulation monitoring plug, used to provide insulation protection for conductors and detect their values, characterized in that, The device includes a monolithically cast main body, with a front guide section, a middle functional section, and a rear processing section connected sequentially along the axial direction inside. The front guide section has a conductor receiving channel that runs through the entire axis and is sealed at its end for conductor insertion and connection. The middle functional section is equipped with a voltage acquisition module and a temperature acquisition module. The rear processing section includes a microprocessor unit and a communication module. The input terminal of the microprocessor unit is electrically connected to the voltage acquisition module and the temperature acquisition module, respectively. The communication module is connected to the output terminal of the microprocessor unit and transmits data to a remote terminal through a communication wire provided on the rear processing section.

2. The intelligent phase insulation monitoring plug according to claim 1, characterized in that, The conductor receiving channel is connected to a through threaded portion, the end of which is sealed, and the conductor extends into and abuts against the end of the threaded portion; a copper rod is connected to one end of the threaded portion relative to the conductor, one end of the copper rod is connected to a copper plate, and the other end of the copper plate is connected to the voltage acquisition module and the temperature acquisition module.

3. The intelligent phase insulation monitoring plug according to claim 2, characterized in that, The non-contact voltage acquisition module includes a voltage-collecting capacitor connected to the copper plate and a power-collecting function module located in the back-end processing unit; the temperature acquisition module is located on one side of the voltage-collecting capacitor.

4. The intelligent phase insulation monitoring plug according to claim 3, characterized in that, The power extraction module includes a first filtering module, a first operational amplifier module, a first signal conditioning module, and a first output module. The first end of the voltage extraction capacitor abuts against the copper plate; the second end of the voltage extraction capacitor is connected to the input end of the first filtering module; the output end of the first filtering module is connected to the input end of the first operational amplifier module; the output end of the first operational amplifier module is connected to the input end of the first signal conditioning module; and the output end of the first signal conditioning module is connected to the first output module.

5. The intelligent phase insulation monitoring plug according to claim 2, characterized in that, The contact-type voltage acquisition module includes a voltage sampling capacitor located on the copper plate and a sampling function module located in the back-end processing unit. The voltage sampling capacitor has a hollow ring structure, and the temperature acquisition module is located in the middle of the voltage sampling capacitor. The voltage sampling capacitor has electrodes at the top and bottom, and the high voltage is divided into a low voltage after passing through the voltage sampling capacitor.

6. The intelligent phase insulation monitoring plug according to claim 5, characterized in that, The sampling function module includes a second filtering module, a second operational amplifier module, a second signal conditioning module, and a second output module. The first end of the voltage sampling capacitor abuts against the copper plate; the second end of the voltage sampling capacitor is connected to the input end of the second filtering module; the output end of the second filtering module is connected to the input end of the second operational amplifier module; the output end of the second operational amplifier module is connected to the input end of the second signal conditioning module; and the output end of the second signal conditioning module is connected to the second output module.

7. The intelligent phase insulation monitoring plug according to claim 6, characterized in that, The second signal conditioning module includes an eighth resistor, a ninth resistor, and a nineteenth capacitor. The first end of the eighth resistor is connected to the output terminal of an operational amplifier. The second end of the eighth resistor is connected to the first end of the ninth resistor, the first end of the nineteenth capacitor, and the signal output interface of the second output module. The second end of the ninth resistor and the second end of the nineteenth capacitor are grounded.

8. The intelligent phase insulation monitoring plug according to claim 2, characterized in that, The temperature acquisition module includes a heat-conducting core rod located on the copper plate and a thermistor disposed on the heat-conducting core rod. The heat generated by the conductor is sequentially conducted to the copper rod, the copper plate, the heat-conducting core rod and the thermistor. The thermistor is electrically connected to the microprocessor unit to transmit the signal value of the change due to heat.

9. The intelligent phase insulation monitoring plug according to claim 8, characterized in that, The thermally conductive core rod is formed from aluminum nitride with a purity of 99%.

10. The intelligent phase insulation monitoring plug according to claim 1, characterized in that, The communication module can communicate using either 4G or Bluetooth.

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