91 results about "Abnormal discharge" patented technology

The invention relates to the technical field of power equipment monitoring, and discloses an abnormal discharge electric field feature extraction method. The method comprises the following steps: standardizing and normalizing data acquired from a multi-channel electric field sensor array of a transformer substation to generate a standardized data stream; performing wavelet decomposition, adaptive threshold noise reduction and reconstruction on the basis of the stream to obtain a denoised signal; time domain statistics and frequency domain energy spectrum analysis are carried out on the signals, features are fused, and a joint feature vector is constructed; training a convolutional neural network classifier based on the vector; and updating a dynamic threshold rule according to the classifier output probability, and finally realizing real-time early warning and model feedback through GPU parallel computing. According to the method, the signal-to-noise ratio and the feature expression capability of the abnormal discharge signal can be effectively improved, and the detection accuracy, the real-time performance and the self-adaptive capability of the system are enhanced.

The invention discloses a three-dimensional visual transformer substation equipment local abnormal discharge positioning method and a three-dimensional visual transformer substation equipment local abnormal discharge positioning system, and relates to the technical field of discharge positioning. Performing Hanning window processing and discrete Fourier transform to obtain a power spectrum, defining a working band, calculating a power spectrum mean value and a cross-channel spectrum value to determine a free spectrum interval, and generating a comb line center set; calculating a parasitic leakage index, and dividing the broadband energy by the index to obtain equalized broadband energy; based on this, a partial discharge space coordinate is calculated by combining sensor installation parameters, and finally, a device three-dimensional model is associated to realize three-dimensional visualization of a positioning result; according to the scheme, the interference of parasitic resonance on positioning is eliminated, the comparability of amplitude and distance attenuation is recovered, the positioning accuracy is improved, three-dimensional visualization is convenient for operation and maintenance personnel to quickly identify a discharge part, and the safe operation of substation equipment is ensured.

The invention relates to the technical field of power system state monitoring, and discloses an insulator defect detection method and device and a storage medium, and the method comprises the steps: collecting the leakage current of an insulator, and constructing a polarity conduction screening model through power frequency phase information, so as to generate a composite current sequence which highlights the polarization attribute of an interface; analyzing the nonlinear degree of the attenuation rate of the sequence drifting along with evolution time in a multi-stage diffusion evolution time domain, and generating an interface electrochemical mass transfer composite index; utilizing the index to invert and construct an interface polarization background reference and stripping the interface polarization background reference from the composite current sequence so as to extract an abnormal discharge pulse residual error; and finally, quantizing the pulse form distortion degree of the residual error, and performing suppression normalization operation on the distortion degree by using the index to output a judgment result. According to the invention, the interference of the interface mass transfer process is effectively eliminated, and the specific detection of the pollution flashover hidden danger is realized.

The invention relates to a rapid arc fault detection device and method for a photovoltaic power station. The device comprises a power station data acquisition module for acquiring circuit topology data and electric signals; the arc fault identification module is used for identifying an arc fault; the fault area positioning module is used for comparing and analyzing the electric signals according to circuit topology data and positioning an arc fault area; the abnormal discharge mode extraction module is used for extracting an abnormal discharge mode in allusion to the arc fault area and in combination with the electric signal; the fault evolution path determination module is used for determining a potential fault evolution path based on the abnormal discharge mode; and the arc fault alarm module is used for integrating the abnormal discharge mode and the potential fault evolution path and generating an arc fault alarm. By adopting the device, rapid identification, positioning and early warning of arc faults can be realized through cooperation of multiple modules, and the safety and reliability of a photovoltaic power station are improved.

The invention relates to the technical field of power equipment state monitoring, and discloses a switch cabinet partial discharge detection method, which comprises the following steps: synchronously collecting multi-source heterogeneous signals generated by partial discharge through a multi-sensor array, and carrying out preprocessing and feature extraction to obtain a multi-modal feature vector; inputting the multi-modal feature vector into a recognition and evaluation model for automatic recognition of discharge types, evaluation of discharge severity and sensing of abnormal discharge; real-time analysis and fusion decision making are carried out on an abnormal sensing result, a recognition result and an evaluation result through a collaborative architecture of edge computing nodes and a cloud platform; wherein the edge computing node utilizes a lightweight real-time sensing module to execute real-time abnormal discharge sensing and triggers local early warning when sensing abnormity, and the cloud platform utilizes a depth evaluation module to execute comprehensive state evaluation, recognition and long-term prediction. According to the invention, the limitation of a single detection method is overcome through multi-sensor synchronous acquisition and in combination with a D-S evidence theory information fusion method.

This utility model relates to the technical field of safety protection devices for partial discharge testing, and more particularly to a safety protection device for partial discharge testing, including a fixed base frame. A connecting mechanism is provided at the top of the fixed base frame, and the connecting mechanism includes a driving component located at the top of the fixed base frame. The driving component is connected to an adjusting component, and a protective component is provided in the middle section of the fixed base frame. The combination of a fixed base, adjusting screw, and measuring scale measures the relevant dimensions of the testing equipment, providing data support for the adjusting component. Hooks on the insulating frame facilitate the suspension and fixing of auxiliary equipment, optimizing the testing operation process. Conductive springs at both ends of the inner wall of the insulating box can quickly conduct current to the ground in case of abnormal discharge or leakage during the test, effectively preventing electric shock to operators and equipment damage, achieving overload protection, and comprehensively ensuring the safety of personnel and equipment during the test, solving the problem of inadequate traditional safety protection measures.

The application relates to a coating carrier plate and a coating device. The coating carrier plate comprises a carrier plate body and a conductive structure. The conductive structure comprises a first conductor and a second conductor. The first conductor is protruded on the carrier plate body along a first direction. The second conductor is electrically connected to the first conductor and extends along at least one direction intersecting the first direction. The first conductor is protruded on the carrier plate body along the first direction. Due to the tip effect, the electric charges accumulated on the carrier plate preferentially gather to the tip of the protruded first conductor. The electric field intensity of the tip part is higher, and the electric charges distributed everywhere can be more efficiently captured, the state of the disordered gathering of the electric charges is changed, the random accumulation of the electric charges on the carrier plate is avoided, and the risk of abnormal discharge is reduced. After the electric charges gather to the tip of the first conductor, the second conductor can provide a discharge path for the gathered electric charges due to the good conductivity of the second conductor, so that the accumulated negative electric charges can be drained along the second conductor, and the abnormal discharge caused by the more and more accumulated electric charges is prevented.

The utility model provides a battery monomer, a battery device, electric equipment and an energy storage device, and belongs to the field of batteries. The battery monomer comprises an electrode part and an adapter part, wherein the electrode part comprises two electrode assemblies which are stacked along a first direction; the switching component is used for electrically connecting the electrode terminal with the tab, the switching component comprises a first connecting part, two second connecting parts and two bending parts, the two second connecting parts are located on the two sides of the first connecting part in the first direction respectively, the second connecting parts are connected with the first connecting part through the bending parts, the first connecting part is connected with the electrode terminal, and the second connecting part is connected with the tab. The two second connecting parts are in one-to-one correspondence with the tabs of the two electrode assemblies and are connected with the tabs; the adapter component further comprises a reinforcing part, the reinforcing part is connected with the bending part, and the reinforcing part can resist deformation of the bending part, so that the deformation degree of the bending part is reduced. Therefore, the risk of abnormal discharge or short circuit in the single battery caused by the deformation of the switching component can be reduced.

Provided is a method of manufacturing a gas barrier film in which, in a case where a film is continuously formed on an elongated support through RtoR, abnormal discharge can be suppressed, and a gas barrier film having high gas barrier performance can be stably prepared. There is provided a method of manufacturing a gas barrier film, the method including: forming an inorganic layer on an elongated support or on an underlying organic layer on the support while transporting the support in a longitudinal direction, in which a plasma is generated by supplying raw material gas between the support and a conductor electrode having a porous structure that is disposed to face the support, and the inorganic layer is formed using a plasma chemical vapor deposition method, and before a main film forming step of forming the inorganic layer on the support or on the underlying organic layer on the support, a preliminary film forming step is provided, the preliminary film forming step being a step of forming an insulating inorganic layer having a lower density than the inorganic layer on a surface of the conductor electrode by setting power that is applied to the conductor electrode to be lower than power in the main film forming step while continuing the supply of the raw material gas and the application of the power until the main film forming step.

The invention discloses a plasma etching chamber, a cleaning method and semiconductor process equipment. The plasma etching chamber comprises a chamber body, a substrate table, a metal plate and an edge pressing piece. The edge pressing piece comprises a first end, the first end abuts against the side, away from the substrate table, of the metal plate, and the surface, extending along the side, away from the substrate table, of the first end is configured to be a first area. Wherein the metal plate is provided with an internal sputtering area and an insulating sputtering area surrounding the internal sputtering area, the internal sputtering area is used for providing cleaning particles for the inner wall of the chamber body under the excitation of plasma, and the first area is located in the insulating sputtering area; the insulating sputtering region is configured to inhibit formation of a conductive film in the first region of the blank holder during deposition of the cleaning particles. Cleaning can be completed on the premise that the vacuum cavity is not opened, and meanwhile the risk that a conductive film is formed on the edge of the edge pressing piece due to metal deposition, and then abnormal discharge is induced is eliminated.

An integrated plugging assembly of a fan controller comprises a controller mounting plate, a plugging seat is arranged on the controller mounting plate, a plugging head is arranged in the plugging seat in a pluggable mode, a guide sliding groove is formed in the front end of the plugging seat, and a positive electrode plugging piece, a negative electrode plugging piece, a control signal plugging piece and a feedback plugging piece are arranged in the guide sliding groove at intervals; the exposed length of the positive pole insertion sheet is smaller than that of the negative pole insertion sheet; the exposed length of the cathode insert is smaller than the depth of the guide chute; a vent hole is formed in the side wall of the guide sliding groove, and one side of the vent hole penetrates through the bottom of the guide sliding groove. The peripheral shape and size of the connecting plug are consistent with the shape and size of the guide chute; and a plugging hole is formed in the front end of the plugging head. According to the utility model, the exposed length of the cathode insert is greater than that of the anode insert, so that equipment is ensured not to be electrified accidentally (including short circuit) before a circuit is connected with the anode, and the impact of electrostatic discharge on the fan controller is reduced; the direction of the connecting plug is corrected before the connecting plug is connected with the inserting piece of the bayonet socket, so that abnormal discharge is avoided.

This invention relates to a transformer core discharge detection device, comprising a base; a clamping assembly mounted on the base for detachably clamping and fixing the part to be detected to the transformer core; a power extraction component disposed on the clamping assembly for extracting an electrical signal from the part to be detected; a first discharge electrode electrically connected to the power extraction component; a second discharge electrode disposed opposite to the first discharge electrode, forming a detection gap between them; a recording medium disposed between the first and second discharge electrodes to leave a trace when an abnormal discharge occurs; a discharge detection unit electrically connected to the second discharge electrode to detect abnormal discharge and output a trigger signal; a conveying mechanism driving the recording medium to move; the conveying mechanism electrically connected to the discharge detection unit, responding to the trigger signal and driving the recording medium forward a predetermined distance. This invention has a simple structure, is easy to install, and can intuitively record abnormal discharge events.

Provided is a manufacturing method of an electrostatic chuck capable of preventing abnormal discharge, an electrostatic chuck, and a substrate processing apparatus. A manufacturing method of an electrostatic chuck includes: a step of preparing a first ceramic plate in which a first hole is formed; a step of preparing a second ceramic plate in which a second hole is formed, the second hole being formed at a position different from that of the first hole in a horizontal direction; a step of forming a slurry layer on the first ceramic plate or the second ceramic plate using a slurry, the slurry layer being formed with a flow path connecting the first hole and the second hole; a step of stacking the first ceramic plate and the second ceramic plate with the slurry layer interposed therebetween; and a step of joining the first ceramic plate and the second ceramic plate stacked with the slurry layer interposed therebetween.

The invention discloses a method and a system for monitoring internal discharge abnormity of a switch cabinet, and aims to realize accurate monitoring and visual display of internal discharge of an all-insulated closed inflatable high-voltage switch cabinet by combining an ultraviolet image transmission fiber bundle and a big data analysis technology, so that the online monitoring capability of an equipment operation state is improved, and the operation safety of the switch cabinet is improved. And safe operation of power equipment is ensured. According to the system, ultraviolet light signals in a switch cabinet are acquired by using ultraviolet image transmission fiber bundles, photoelectric conversion and signal amplification are performed through an APD avalanche photoelectric detection module, and historical data modeling, feature extraction and clustering, real-time data monitoring and anomaly detection and classification are performed in combination with an autoregression model, a self-organizing mapping neural network and a density clustering algorithm. The system can realize real-time monitoring and abnormity feedback of the equipment state in severe environments such as strong electromagnetic interference, high temperature and high pressure, provides high sensitivity and anti-interference capability, and ensures monitoring accuracy and timeliness.

The invention relates to an abnormal discharge current detection method and device for electric spark discharge machining, and is applied to the technical field of discharge machining. A direct current-direct current power supply module is adopted as a current detection core element, has a stable voltage output characteristic and is sensitive to current fluctuation response, and a traditional Hall sensor is replaced; the problem of high-precision detection of small current in a strong electromagnetic interference environment is successfully solved; on the basis of current rising edge characteristic differences of abnormal discharge and normal discharge, two key time points are selected for voltage comparison, abnormal states such as excessive arc, arc, short circuit and micro open circuit can be accurately distinguished, and missed judgment and misjudgment are avoided; a reference value lookup table corresponding to different peak currents is established through experimental calibration to adapt to various medium and finish machining parameter scenes; and the detection branch adopts the design of an isolation diode and a current-limiting resistor, and is matched with pulse-type intermittent measurement of a controlled switch tube, so that shunting interference on a main discharge loop is avoided, and the stability of the processing process is ensured.

This invention provides an optical laminate and its manufacturing method. The optical laminate can prevent abnormal discharge to the marking layer at display defect sites and marks defect sites with fewer steps and lower cost. An optical laminate is characterized in that it is an optical laminate formed by stacking a substrate and an optical functional layer, wherein the optical functional layer comprises an inorganic oxide or an inorganic nitride, and a marking layer is locally formed on the surface of the optical functional layer. The marking layer is made of a semiconductor material and has a reflectivity of 40% or more for light in the wavelength range of 400 nm to 700 nm.

The invention provides a capacitor abnormal discharge detection method and device, a storage medium and computer equipment, and relates to the technical field of capacitor state monitoring, and the method comprises the steps: collecting multiple paths of voltages and multiple paths of currents of a capacitor to be detected, and carrying out the pulse coding of each path of voltage and each path of current, and obtaining each path of pulse sequence; a spiking neural network is determined, the number of input channels of the spiking neural network is the same as the number of the pulse sequences, and the spiking neural network establishes a relation with the characteristic response of abnormal discharge by adopting a specific neuron group; and inputting each pulse sequence into the pulse neuron network to obtain the abnormal discharge type of the capacitor to be detected. Therefore, the adaptive learning capability of the complex pulse sequence can be realized, so that the health state of the capacitor can be accurately and comprehensively evaluated.

The application discloses a high-voltage direct-current power supply for an axial fast-flow CO2 laser, and relates to the technical field of high-voltage direct-current power supplies, comprising a three-phase rectification module, a soft-start filtering module, a phase-shift full-bridge inversion module, a high-frequency voltage-boosting module, a high-voltage rectification output module, a setting signal input module, a laser energy feedback module, a phase shift control module, a primary-side current detection module and a protection module; three-phase alternating current is rectified, filtered, phase-shift inverter, isolated boosted and high-voltage rectified to form a high-voltage direct-current output; the phase shift control module adjusts a phase shift angle according to the deviation of a power setting signal and a laser energy feedback signal; and the primary-side current detection module triggers the protection module to shut off a driving output when the current reaches a preset condition. Through laser energy closed-loop regulation, primary-side current rapid protection, high-frequency voltage-boosting and water-cooling heat dissipation, the output stability and response capability are improved, negative resistance discharge overshoot is inhibited, abnormal discharge risk is reduced, and the power supply efficiency, power density and reliability are improved.

To provide a technique for suppressing occurrence of abnormal discharge in a through hole of an electrostatic chuck.SOLUTION: There is provided a plasma processing apparatus including a plasma processing chamber, a base disposed in the plasma processing chamber, and an electrostatic chuck. The electrostatic chuck includes a placing table, an electrostatic electrode, a bias electrode, an embedding member, and a conductive member. The mounting table includes an upper surface, a lower surface opposite to the upper surface, and a through hole penetrating the upper surface and the lower surface. The embedded member is disposed in the through hole and has a diameter smaller than a hole diameter of the through hole. The conductive member is spaced apart from the electrostatic electrode and the bias electrode within the mounting table. The conductive member includes a tubular portion surrounding the through hole, and a flange portion extending radially outward from an upper end of the tubular portion in parallel with the upper surface.SELECTED DRAWING: Figure 3

The invention provides a power equipment abnormal discharge detection method based on discharge region segmentation. The method comprises the steps of obtaining time domain pulse information, pulse frequency domain spectral lines, corresponding space coordinates and holographic image data; performing feature processing to obtain a pulse waveform code and a frequency domain map; performing space field intensity mapping to obtain three-dimensional discharge field intensity distribution; constructing a first three-dimensional model by using the holographic image data, and obtaining a plurality of nodes after segmentation; establishing a first incidence matrix, a second incidence matrix and a third incidence matrix, and determining corresponding weights; performing joint processing on each matrix and the corresponding weight to obtain a preliminary segmentation result of discharge; determining a target node with abnormal discharge based on the preliminary segmentation result and the information of each node; and verification is performed based on the fault information of the preliminary segmentation result and the target node, and if the verification is passed, the preliminary segmentation result is taken as the target segmentation result, so that the accuracy and efficiency of abnormal discharge detection are improved, and the position of abnormal discharge can be accurately positioned.

The invention provides an electrode device, semiconductor process equipment and a voltage regulation and control method, the electrode device comprises an electrode piece and a voltage regulation and control device, the electrode piece is connected with a radio frequency device of the semiconductor process equipment, and the radio frequency device is used for feeding radio frequency into the electrode piece; the voltage regulation and control device comprises a measuring unit and a direct-current power supply; the measuring unit is used for measuring the direct-current bias voltage of the electrode piece; the direct-current power supply is electrically connected with the measuring unit and used for applying correction bias voltage opposite to the polarity of the direct-current bias voltage to the electrode piece according to the direct-current bias voltage. Abnormal discharge in a cavity of semiconductor process equipment is often caused by direct current bias voltage acting on an electrode piece. The measuring unit can measure the magnitude of the direct-current bias voltage and output the correction bias voltage with the polarity opposite to that of the direct-current bias voltage to the electrode piece, the numerical value of the direct-current bias voltage on the electrode piece is reduced, and then the risk of abnormal discharge caused by too high direct-current bias voltage is reduced.

A substrate processing apparatus and an electrostatic chuck for preventing or inhibiting occurrence of abnormal discharge at a lower part of edge ring are provided. Substrate processing apparatus includes: plasma processing chamber; base table situated in plasma processing chamber; electrostatic chuck situated on base table and having substrate support surface and ring support surface; and edge ring situated on ring support surface. Groove in which heat transfer gas is diffused is formed in at least one of ring support surface or lower surface of edge ring. Heat transfer gas supply hole configured to supply heat transfer gas into groove is formed in ring support surface. In annular region including position at which heat transfer gas supply hole is formed, depth of groove in surrounding region around heat transfer gas supply hole is less than depth of groove in region other than surrounding region.

The invention discloses an intelligent detection system and method for abnormal discharge of high-voltage equipment, and belongs to the technical field of intelligent power distribution, and the method comprises the steps: extracting macroscopic discharge characteristics from real-time multi-modal data, inputting the macroscopic discharge characteristics and operation scene information into a diagnosis decision model, and obtaining diagnosis opinions and confidence; if the confidence coefficient is greater than a first threshold value, taking the diagnosis opinion as a basic conclusion, otherwise, carrying out spatial spectrum estimation to extract a direction of arrival, taking the direction of arrival as a spatial constraint to unmix the signal, and obtaining a mixed physical signal waveform; matching the mixed physical signal waveform with high-voltage equipment in the three-dimensional topological model to determine a discharge source; and calculating a three-dimensional coordinate retrieval mapping knowledge domain of abnormal discharge by combining a three-dimensional topological model based on a mixed physical signal waveform arrival time difference and a direction of arrival obtained by a sensor array so as to deduce a fault propagation chain. According to the invention, multi-point discharge source detection can be realized, and the intelligent degree of a power distribution system is improved.

The invention relates to the technical field of electric vehicles and high-voltage power systems, and discloses a discharge protection method, device and equipment, a storage medium and an electric vehicle. The method comprises the following steps: determining discharge safety limit data according to historical discharge data of a discharge resistor in a normal discharge process, and determining actual discharge data according to current discharge data of the discharge resistor in a current discharge period and preset initial accumulated discharge data; and determining an actual discharge state of the motor controller according to a comparison result between the actual discharge data and the discharge safety limit data, and triggering the motor controller to execute discharge stopping operation when the actual discharge state is an abnormal discharge state. The invention aims to improve the discharge protection performance of the motor controller so as to guarantee the operation reliability of the motor controller in the discharge process.

The application discloses an electrical fire monitoring and identifying method and system based on electrical load fluctuation, relates to the technical field of electrical fire monitoring and identifying, and comprises the following steps: collecting three-phase voltage and current signals for preprocessing, generating instantaneous power fluctuation, and then performing energy conversion and frequency domain conversion to obtain power spectrum density for linear regression, generating a weighted coefficient for preliminary fluctuation state detection, and obtaining a detection result; based on the detection result, probability density estimation is performed, a numerical matrix is constructed, a concave function value is solved for iteration, an iteration result is output, combined parameters are calculated, a fluctuation dynamics equation is constructed for numerical integration solution, an envelope response value is output, and based on the envelope response value, binarization and Bernoulli entropy calculation are performed to obtain a smooth entropy value; the application can issue an early warning in the early stage of abnormal discharge or contact deterioration of the electrical load, and significantly improves the sensitivity and anti-interference ability of electrical fire monitoring.

The utility model discloses a hidden danger current sensor for power transmission line distributed fault current monitoring, which belongs to the technical field of current sensors and comprises a high-frequency broadband current sensor S1 and a first transmission line transformer B1. The output port is connected to the high-frequency broadband current sensor S1; the output end of the first transmission line transformer B1 is connected to an abnormal discharge traveling wave current signal interface JK1. The two ends of the sampling resistor R1 are connected to a power frequency current signal interface JK2. Acquiring an abnormal discharge traveling wave current signal of which the amplitude is as small as milliampere level and the bandwidth is 10KHz-14MHz or 50KHz-30MHz level from a JK1 port; a power frequency current signal with the amplitude reaching the KA level and a fault traveling wave current signal capable of being secondarily extracted are obtained from a JK2 port.

The present invention addresses the problem of providing a semiconductor manufacturing device, a plasma treatment device, and an electrostatic chuck capable of suppressing abnormal discharge of an electrode. The present invention is provided with: a base (10); a placement member (13) that is equipped with a placement surface (15) on which an object to be placed is placed; and a first conductive layer (11) that is provided inside the placement member (13). A second conductive layer (12) formed from the base (10) or provided between the base (10) and the first conductive layer (11) is disposed along the placement surface (15) together with the first conductive layer (11). When the placement surface (15) is viewed in a plan view, the second conductive layer (12) overlaps a range that includes the first conductive layer (11), and the second conductive layer (12) includes a region not overlapping the first conductive layer (11).

The application relates to a particle active inhibition method of magnetron sputtering coating and a rotating cathode device, relates to the technical field of magnetron sputtering coating, and the method comprises the following steps: in a pre-sputtering process, a magnet bar independently rotatable in a target cylinder is driven to rotate by a preset angle, so that a magnetic field action area deviates from a substrate; in combination with the inherent sputtering angle distribution narrowing characteristics of the rotating cathode, pre-sputtering particles are directionally guided to a non-process area; and after the pre-sputtering is completed, the magnet bar is reset to perform formal coating. The application realizes active inhibition of particles by active angle adjustment of the magnet bar, and pre-sputtering time is not required to be prolonged; further, through full life cycle adaptive control, active interception of abnormal discharge and segmented magnet bar optimization, the production efficiency and product yield are significantly improved.

An electroencephalogram abnormal discharge detection method, device, medium and equipment. The method comprises the following steps: acquiring an electroencephalogram original signal (101); performing hyperpolarization detection on the electroencephalogram original signal to obtain a predicted discharge position (102); acquiring a lead combination signal from the electroencephalogram original signal, and performing discharge detection on the lead combination signal according to the predicted discharge position (103); and generating a discharge probability graph containing discharge position information and discharge probability information (104). The method, device, medium and equipment realize automatic detection of electroencephalogram abnormal discharge, and improve the detection accuracy.

The invention discloses a power distribution network fault cause diagnosis method and device, electronic equipment and a storage medium, and relates to the technical field of power distribution network fault diagnosis or other related fields, and the method comprises the steps: obtaining fault current sequence data of a target power distribution line, the fault current sequence data comprises N pieces of fault current sampling data, n is a positive integer; performing data preprocessing on the fault current sequence data to obtain target time sequence data of a to-be-input model; the target time sequence data is input to a target model, a fault diagnosis result is output, the target model is a pre-trained circulation network model, and the target model is used for analyzing the abnormal discharge process based on the target time sequence data, identifying the waveform form of the abnormal current, determining the fault diagnosis result according to the waveform identification result and outputting the fault diagnosis result. According to the invention, the technical problem of low reliability of the fault diagnosis result due to the fact that the fault reason diagnosis method of the power distribution network often neglects the analysis of the discharge process and the waveform in the prior art is solved.