An intelligent discharging device based on non-contact coupling and remote monitoring

Abstract

This invention discloses an intelligent discharge device based on non-contact coupling and remote monitoring, relating to the field of high-voltage power equipment safety protection technology. It includes: a non-contact electrode module for generating a high-frequency magnetic field to establish a coupling channel, releasing the charge of the charged body into a virtual grounding loop through electromagnetic induction; a high-frequency energy conversion module for converting the charge of the charged body into a high-frequency pulse signal; an energy storage and release module for absorbing and neutralizing the charge coupling formed between the insulation layer and the charged body through a high-voltage capacitor matrix; a multi-dimensional sensing module for acquiring electric field, temperature, partial discharge, and voltage level and phase information of the charged body; an edge intelligent processing module for achieving adaptive optimization and fault self-diagnosis of the discharge process; and a dual-mode communication system for uploading discharge current, voltage waveform, and status data to a cloud platform in real time. This invention achieves adaptive discharge and remote monitoring of the charged body through hardware collaboration and algorithm optimization.

Description

Technical Field

[0001] This invention relates to the field of safety protection technology for high-voltage power equipment, specifically to an intelligent discharge device based on non-contact coupling and remote monitoring. Background Technology

[0002] Traditional grounding wire connection requires manual climbing of equipment or the use of insulated tools for physical connection, taking an average of over 30 minutes. The difficulty increases significantly in high-altitude, underground, or complex environments; for example, power line maintenance requires climbing towers, and underground cable work is limited by confined spaces and damp conditions. Furthermore, manual grounding wire connection requires close contact with high-voltage equipment, posing a risk of electric shock. Poor grounding contact or incomplete discharge can leave residual charge, potentially leading to secondary accidents. Statistics show that approximately 15% of operational accidents in the power industry are related to grounding operation errors. Existing discharge auxiliary devices, such as the mobile discharge equipment from the Fourth Engineering Bureau of China Water Resources and Hydropower, while improving mobility, still require physical connection and lack real-time data feedback and remote control capabilities. Partial discharge monitoring technologies, such as the online monitoring device from Nanyue Electric, achieve non-contact detection, but are limited to early warning functions and cannot actively trigger discharge.

[0003] Therefore, there is an urgent need for an intelligent discharge device based on non-contact coupling and remote monitoring to avoid the safety hazards of traditional contact grounding and to be applicable to complex scenarios such as enclosed equipment and high-altitude lines. Summary of the Invention

[0004] The technical problem to be solved by this invention is to overcome the shortcomings of the existing technology and design an intelligent discharge device based on non-contact coupling and remote monitoring, which breaks through the physical limitations of traditional grounding wires and is suitable for complex scenarios such as enclosed equipment and high-altitude lines.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] This invention provides an intelligent discharge device based on non-contact coupling and remote monitoring, comprising:

[0007] The non-contact electrode module is used to generate a high-frequency magnetic field to establish a coupling channel and release the charge of the charged body to the virtual grounding loop through electromagnetic induction.

[0008] A high-frequency energy conversion module is used to convert the charge of a charged body into a high-frequency pulse signal;

[0009] The energy storage and release module absorbs and neutralizes the charge coupling formed between the insulating layer and the charged body through a high-voltage capacitor matrix;

[0010] A multi-dimensional sensing module is used to acquire information on electric field, temperature, partial discharge, and voltage level and phase of charged bodies;

[0011] The edge intelligent processing module is used to achieve adaptive optimization and fault self-diagnosis of the discharge process;

[0012] The dual-mode communication system is used to upload discharge current, voltage waveforms, and status data to the cloud platform in real time.

[0013] As a further technical solution of the present invention, the non-contact electrode module adopts a dual-mode charge transfer mechanism of capacitive coupling + electromagnetic induction, including:

[0014] The high-frequency electromagnetic field cooperative path utilizes the high-frequency electromagnetic field to establish a coupling channel between the device and the charged body, and transfers the charge of the charged body to the energy storage and release module through electromagnetic induction.

[0015] The capacitively coupled charge absorption module releases the charge to the neutral point or virtual grounding loop via a thyristor.

[0016] Furthermore, the capacitively coupled charge absorption module employs a copper mesh electrode coated with multilayer insulating ceramic, forming a distributed capacitive coupling interface with the surface of the charged body.

[0017] Furthermore, the high-frequency electromagnetic field cooperative path specifically refers to the establishment of an electromagnetic induction channel between the high-frequency resonant coil built into the electrode and the charged body.

[0018] As a further technical solution of the present invention, the high-frequency energy conversion module includes:

[0019] The low-loss inverter topology module is designed based on a full-bridge LLC resonant circuit to create a high-frequency inverter that converts coupled charges into high-frequency pulse signals.

[0020] The dynamic frequency tracking module matches the electric field frequency of the charged body in real time through a phase-locked loop;

[0021] Furthermore, the energy storage and release module includes:

[0022] A supercapacitor bank is a high-voltage energy storage unit composed of multiple graphene supercapacitors connected in series.

[0023] The virtual grounding loop uses IGBT (Insulated Gate Bipolar Transistor) modules to construct a controllable release circuit, which feeds the stored charge back to the grid neutral point or internal energy dissipation resistor through a high-frequency inverter, thus achieving discharge without grounding wire.

[0024] As a further technical solution of the present invention, the multi-dimensional sensing module includes:

[0025] The electric field sensing layer integrates a MEMS (Micro-Electro-Mechanical System) electric field probe and a broadband voltage sensor to automatically identify the voltage level, phase, and harmonic components of charged bodies.

[0026] The status monitoring layer is used to monitor the temperature of the electrode contact points and the ultra-high frequency discharge signal.

[0027] Furthermore, the state detection layer includes:

[0028] Distributed fiber optic temperature sensor for real-time monitoring of temperature rise at electrode contact points;

[0029] Ultra-high frequency partial discharge sensors are used to capture discharge signals in the 300MHz~3GHz frequency band and provide early warning of insulation defects.

[0030] As a further technical solution of the present invention, the edge intelligent processing unit includes: an ARM Cortex A72 processor, which dynamically adjusts the parameters of the variable capacitor / inductor network according to sensor data to match the voltage range; and predicts the charge accumulation trend through an LSTM neural network to trigger the discharge process.

[0031] As a further technical solution of the present invention, the dual-mode communication system includes:

[0032] 4G / 5G public network links are used to transmit high-priority data such as discharge waveforms and alarm records.

[0033] LoRa (Long Range Radio) self-organizing network; used to build a mesh network in areas without public network coverage to transmit temperature and remaining charge data.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. This invention breaks through the physical limitations of traditional grounding wires by using a dual-mode charge transfer mechanism of "capacitive coupling + electromagnetic induction", making it suitable for complex scenarios such as enclosed equipment and high-altitude lines;

[0036] 2. This invention utilizes IGBT modules to construct a controllable virtual circuit, realizing directional charge release and energy feedback, thus avoiding the risk of short circuit in the grounding wire;

[0037] 3. This invention integrates multi-dimensional sensing data such as electric field, temperature, and partial discharge, and realizes adaptive optimization and fault self-diagnosis of the discharge process through edge intelligence. It also realizes adaptive discharge and remote monitoring of charged bodies through hardware collaboration and algorithm optimization. Attached Figure Description

[0038] Figure 1This is a structural diagram of an intelligent discharge device based on non-contact coupling and remote monitoring proposed in this invention.

[0039] Figure 2 This is a diagram showing the energy flow and data flow structure of an intelligent discharge device based on non-contact coupling and remote monitoring proposed in this invention.

[0040] Figure 3 This is a control flowchart of a specific embodiment of the present invention. Detailed Implementation

[0041] The specific embodiments of the present invention are described below with reference to the accompanying drawings and examples:

[0042] It should be noted that the structures, colors, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] like Figure 1 and Figure 2 As shown, the present invention provides an intelligent discharge device based on non-contact coupling and remote monitoring, comprising:

[0045] The non-contact electrode module 101 is used to generate a high-frequency magnetic field to establish a coupling channel and release the charge of the charged body to the virtual grounding loop through electromagnetic induction.

[0046] The high-frequency energy conversion module 102 is used to convert the charge of a charged body into a high-frequency pulse signal;

[0047] The energy storage and release module 103 absorbs and neutralizes the charge coupling formed between the insulating layer and the charged body through a high-voltage capacitor matrix.

[0048] The multi-dimensional sensing module 104 is used to acquire electric field, temperature, partial discharge and voltage level and phase information of charged body;

[0049] The edge intelligent processing module 105 is used to realize adaptive optimization and fault self-diagnosis of the discharge process;

[0050] The dual-mode communication system 106 is used to upload discharge current, voltage waveform, and status data to the cloud platform in real time.

[0051] This invention overcomes the physical limitations of traditional grounding wires through a dual-mode charge transfer mechanism of "capacitive coupling + electromagnetic induction," making it suitable for complex scenarios such as enclosed equipment and high-altitude lines. It utilizes IGBT modules to construct a controllable virtual circuit, enabling directional charge release and energy feedback, thus avoiding the risk of short circuits in the grounding wire. Furthermore, it integrates multi-dimensional sensor data such as electric field, temperature, and partial discharge, achieving adaptive optimization and fault self-diagnosis of the discharge process through edge intelligence. Through hardware collaboration and algorithm optimization, it enables adaptive discharge and remote monitoring of charged bodies.

[0052] In this embodiment of the invention, the non-contact electrode module 101 employs a dual-mode charge transfer mechanism of capacitive coupling + electromagnetic induction, eliminating the need for a physical grounding wire, and includes:

[0053] The high-frequency electromagnetic field cooperative path 111 utilizes the high-frequency electromagnetic field to establish a coupling channel between the device and the charged body, and transfers the charge of the charged body to the energy storage and release module through electromagnetic induction.

[0054] The capacitively coupled charge absorption module 112 releases the charge to the neutral point or virtual grounding loop via a thyristor.

[0055] The high-frequency electromagnetic field synergistic path specifically involves establishing an electromagnetic induction channel between the electrode's built-in high-frequency resonant coil and the charged body. The high-frequency resonant coil operates at a frequency of 1~10MHz, and by establishing this channel with the charged body, it enhances the charge migration rate, making it suitable for non-contact discharge in metal-enclosed equipment (such as GIS).

[0056] The capacitively coupled charge absorption module uses a copper mesh electrode covered with multilayer insulating ceramic. The dielectric strength of the copper mesh electrode is ≥40kV / mm, which forms a distributed capacitive coupling interface with the surface of the charged body to absorb residual charge and induced current, with a coupling efficiency of ≥85%.

[0057] In this embodiment of the invention, the high-frequency energy conversion module 102 includes:

[0058] The low-loss inverter topology module 121 is a high-frequency inverter designed based on a full-bridge LLC resonant circuit. It converts coupled charges into high-frequency pulse signals, where the frequency of the high-frequency pulse signals is 2MHz±5%, the transmission loss is ≤15%, and the efficiency is 40% higher than that of traditional linear circuits.

[0059] The dynamic frequency tracking module 122 matches the electric field frequency of the charged body in real time through a phase-locked loop, reducing transmission loss and avoiding energy reflection caused by harmonic interference.

[0060] In this embodiment of the invention, the energy storage and release module 103 incorporates a high-voltage capacitor matrix, which forms capacitive coupling with the charged body through an insulating layer, absorbing and neutralizing charges in real time to prevent charge accumulation; including:

[0061] Supercapacitor group 131 is a high-voltage energy storage unit composed of multiple graphene supercapacitors connected in series.

[0062] The virtual grounding loop 132 uses an IGBT module to construct a controllable release circuit, which feeds the stored charge back to the grid neutral point or internal energy-consuming resistor through a high-frequency inverter, realizing discharge without grounding wire. The discharge time is ≤3 seconds, which is ≥15 seconds compared to the traditional grounding wire, thus improving the discharge efficiency.

[0063] The graphene supercapacitor uses a 2.7V / 3000F capacitor. Multiple graphene supercapacitors with 2.7V / 3000F capacitors are connected in series to form a high-voltage energy storage unit. The total capacity of the high-voltage energy storage unit is ≥100F, the withstand voltage level covers 10kV~500kV, and it supports millisecond-level fast charging and discharging.

[0064] In this embodiment of the invention, the multi-dimensional sensing module 104 includes:

[0065] The electric field sensing layer 141 integrates a MEMS electric field probe and a broadband voltage sensor to automatically identify the voltage level, phase and harmonic components of charged bodies.

[0066] The status monitoring layer 142 is used to monitor the temperature of the electrode contact point and the ultra-high frequency discharge signal.

[0067] The electric field sensing layer automatically detects the voltage level and phase of charged bodies by integrating a MEMS electric field probe, eliminating the need for manual three-phase voltage testing. The MEMS electric field probe has a sensitivity of 0.1V / m to 10kV / m, and the wideband voltage sensor has a bandwidth of DC to 1GHz. It automatically identifies the voltage level, phase, and harmonic components of charged bodies with a false positive rate of <0.001%.

[0068] In this embodiment of the invention, the state detection layer 142 includes:

[0069] The distributed fiber optic temperature sensor 1421 is used to monitor the temperature rise of the electrode contact point in real time; the accuracy is ±0.5℃, and it prevents overheating and breakdown.

[0070] The UHF partial discharge sensor 1422 is used to capture discharge signals in the 300MHz~3GHz frequency band and provide early warning of insulation defects.

[0071] In this embodiment of the invention, the edge intelligent processing unit is built on an edge computing platform based on an ARM Cortex A72 processor. It dynamically adjusts the parameters of the variable capacitor / inductor network according to sensor data, adjusts the device impedance through the variable capacitor / inductor network to match a voltage range of 10kV~500kV, and has a response time of <50ms. It predicts the charge accumulation trend through an LSTM neural network, triggers the discharge process in advance, and reduces peak current impact.

[0072] In this embodiment of the invention, the dual-mode communication system 106 includes:

[0073] 4G / 5G public network link 161 is used to transmit high-priority data such as discharge waveforms and alarm records, with a latency of <100ms;

[0074] LoRa self-organizing network 162 is used to build a mesh network in areas without public network coverage, transmit temperature and remaining charge data, and has a communication distance of ≥5km.

[0075] See Figure 3 This invention takes a 220kV overhead transmission line outage maintenance operation as an example. In the outage maintenance of a 220kV overhead transmission line, it is necessary to quickly release the residual charge on the line. Traditional methods require workers to climb the tower to connect the grounding wire, which takes about 45 minutes and carries the risk of falling from height.

[0076] In this invention, users can deploy the device according to the device operation procedure to perform contactless intelligent voltage detection and discharge, greatly shortening the time spent working at heights. This invention includes six steps: device startup and initialization, deployment of non-contact electrodes, identification of the status of charged bodies, high-frequency energy recovery, controllable pulse release, and remote status confirmation.

[0077] Step S1, device startup and initialization includes two parts: power self-test and communication module network confirmation. The power self-test requires the supercapacitor to have a remaining capacity of ≥20%; the communication module network confirmation requires the 4G / LoRa signal strength to be >-90dBm.

[0078] Step S2, the deployment of the non-contact electrode involves fixing the intelligent discharge device to the top of the insulating operating rod, and using the insulating rod to bring the non-contact electrode close to the surface of the wire. The electrode distance from the wire is required to be ≤10cm, and the coupling capacitance value is ≥200pF.

[0079] Step S3, the state recognition of charged body is to use MEMS electric field probe to identify the voltage of the conductor as 220kV. The error of the voltage signal collected by MEMS electric field probe is within 220kV±10%. The edge computing unit starts adaptive matching and performs phase locking (A phase / B phase C phase, error <1°).

[0080] Step S4, high-frequency energy recovery, involves operating the high-frequency inverter at a frequency of 3MHz, absorbing the charge on the conductors through electromagnetic coupling, and charging the supercapacitor bank to 95% capacity within 5 seconds, with an energy storage voltage of 18kV.

[0081] Step S5, the controllable pulse release is controlled by the edge computing unit of the IGBT module, which releases the charge to the tower foundation grounding grid in 3 pulses with an interval of 0.5 seconds, releasing a peak current of 80A, with a total time of 8 seconds;

[0082] Step S6: Remote status confirmation is achieved by displaying the discharge completion (residual voltage 28V) on the cloud platform and pushing confirmation information to the maintenance personnel's handheld terminal.

[0083] The basic principles of the present invention have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in the present invention are merely examples and not limitations, and should not be considered as essential features of each embodiment of the present invention. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the present invention to the necessity of employing the aforementioned specific details.

[0084] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smart discharge device based on non-contact coupling and remote monitoring, characterized in that, include: The non-contact electrode module is used to generate a high-frequency magnetic field to establish a coupling channel and release the charge of the charged body to the virtual grounding loop through electromagnetic induction. A high-frequency energy conversion module is used to convert the charge of a charged body into a high-frequency pulse signal; The energy storage and release module absorbs and neutralizes the charge coupling formed between the insulating layer and the charged body through a high-voltage capacitor matrix; A multi-dimensional sensing module is used to acquire information on electric field, temperature, partial discharge, and voltage level and phase of charged bodies; The edge intelligent processing module is used to achieve adaptive optimization and fault self-diagnosis of the discharge process; The dual-mode communication system is used to upload discharge current, voltage waveforms, and status data to the cloud platform in real time. The non-contact electrode module employs a dual-mode charge transfer mechanism combining capacitive coupling and electromagnetic induction, including: The high-frequency electromagnetic field cooperative path utilizes the high-frequency electromagnetic field to establish a coupling channel between the device and the charged body, and transfers the charge of the charged body to the energy storage and release module through electromagnetic induction. The capacitively coupled charge absorption module releases the charge to the neutral point or virtual grounding loop via a thyristor. The high-frequency energy conversion module includes: a dynamic frequency tracking module, which matches the electric field frequency of the charged body in real time through a phase-locked loop; The energy storage and release module includes: a supercapacitor bank and a virtual grounding circuit. The virtual grounding circuit uses an IGBT module to construct a controllable release circuit, which feeds the stored charge back to the grid neutral point or internal energy-consuming resistor through a high-frequency inverter, thereby achieving discharge without grounding wire. The edge intelligent processing module dynamically adjusts the parameters of the variable capacitor / inductor network based on sensor data to match the voltage range; it predicts the charge accumulation trend through an LSTM neural network and triggers the discharge process; the controllable pulse release is controlled by the edge intelligent processing unit of the IGBT module.

2. The intelligent discharge device based on non-contact coupling and remote monitoring according to claim 1, characterized in that, The capacitively coupled charge absorption module uses a copper mesh electrode covered with multilayer insulating ceramic to form a distributed capacitive coupling interface with the surface of the charged body.

3. The intelligent discharge device based on non-contact coupling and remote monitoring according to claim 1, characterized in that, The high-frequency electromagnetic field cooperative path is specifically defined as follows: an electromagnetic induction channel is established between the high-frequency resonant coil built into the electrode and the charged body.

4. The intelligent discharge device based on non-contact coupling and remote monitoring according to claim 1, characterized in that, The high-frequency energy conversion module includes: The low-loss inverter topology module is a high-frequency inverter designed based on a full-bridge LLC resonant circuit, which converts coupled charges into high-frequency pulse signals.

5. The intelligent discharge device based on non-contact coupling and remote monitoring according to claim 1, characterized in that, The supercapacitor bank is a high-voltage energy storage unit composed of multiple graphene supercapacitors connected in series.

6. The intelligent discharge device based on non-contact coupling and remote monitoring according to claim 1, characterized in that, The multi-dimensional sensing module includes: The electric field sensing layer integrates a MEMS electric field probe and a broadband voltage sensor to automatically identify the voltage level, phase, and harmonic components of charged bodies. The status monitoring layer is used to monitor the temperature of the electrode contact points and the ultra-high frequency discharge signal.

7. The intelligent discharge device based on non-contact coupling and remote monitoring according to claim 6, characterized in that, The status monitoring layer includes: Distributed fiber optic temperature sensor for real-time monitoring of temperature rise at electrode contact points; Ultra-high frequency partial discharge sensor, used to capture discharge signals in the 300MHz~3GHz frequency band.

8. The intelligent discharge device based on non-contact coupling and remote monitoring according to claim 1, characterized in that, The edge intelligence processing module includes an ARM Cortex A72 processor.

9. The intelligent discharge device based on non-contact coupling and remote monitoring according to claim 1, characterized in that, The dual-mode communication system includes: 4G / 5G public network links are used to transmit high-priority data such as discharge waveforms and alarm records. LoRa self-organizing network; used to build a mesh network in areas without public network coverage to transmit temperature and remaining charge data.

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