159 results about "Abnormal discharge" patented technology

The present application relates to a switch cabinet discharge fault detection method, system, equipment and medium, belonging to the technical field of power equipment fault detection, the fault detection method includes: receiving real-time monitoring data of the switch cabinet to be monitored and aligning the timestamp; performing dynamic amplitude compensation on the electric field signal data based on the aligned current humidity data, generating the corrected electric field signal data and performing time-frequency domain analysis, extracting the discharge pulse density and high-frequency energy proportion; performing frequency filtering and waveform analysis on the vibration signal, calculating the impact intensity factor and the vibration energy entropy value; making abnormal judgments on the discharge pulse density and the impact intensity factor, and marking the abnormal discharge according to the abnormal judgment results; based on the synchronous change correlation of the high-frequency energy proportion and the impact intensity factor and the vibration energy entropy value, verifying the abnormal discharge marking result, and obtaining the discharge fault result. The present application can realize efficient detection and accurate diagnosis of switch cabinet discharge faults.

The invention relates to the technical field of equipment maintenance, in particular to a distribution box remote diagnosis and maintenance system which comprises a voltage deviation detection module, a node hot stacking identification module, a channel stability classification module, a contact aging trend evaluation module and a period adjustment trigger module. According to the method, peak value change of effective voltage in each channel period in the distribution box is collected and compared with a preset criterion so as to accurately identify an abnormal discharge unit and accurately position a potential risk channel, and the change rate of equivalent series capacitance, contact conductance and contact resistance of a node is continuously sampled in a non-power-on state so as to accurately identify the potential risk channel. According to the method, multi-parameter same-trend change characteristics are determined, the contact aging process is accurately evaluated by integrating the parameter trend, the node trend and the maintenance plan period remaining time are subjected to cross comparison, the maintenance task advance opportunity is automatically judged, the maintenance plan is actively adjusted, the node fault missing detection risk is effectively reduced, and the maintenance timeliness and accuracy are remarkably improved.

The invention discloses an oil-immersed transformer active defense method and system based on pulse current characteristics. The acquisition device is used for acquiring output signals of high-frequency pulse current sensors mounted at a high-voltage bushing end screen grounding position, a high-voltage bushing position and an iron core grounding position to obtain digital pulse current signals; whether active defense is started or not is judged according to whether the instantaneous value of the pulse current signal at the iron core grounding position reaches a protection starting threshold or not; judging whether the current pulse cluster is a discharge pulse cluster with abnormal internal discharge or not based on the three groups of pulse current signal characteristics; and judging whether protection acts or not according to the number of abnormal discharge pulse clusters in a set period. According to the method, serious partial discharge in the large oil-immersed transformer can be identified, protection measures are actively taken, and the situation that serious discharge defects are further developed into arc breakdown faults is effectively avoided.

The invention discloses a process chamber, an upper electrode device thereof and semiconductor process equipment. Wherein the upper electrode device comprises a radio frequency coil (11) and an adjustable capacitor (12), the radio frequency coil (11) is used for being wound outside a shielding cylinder (70) of the process chamber, and the shielding cylinder (70) is used for being arranged outside a plasma generation cavity (20) of the process chamber in a sleeving mode; the adjustable capacitor (12) is connected in series with the radio frequency coil (11), and the adjustable capacitor (12) is used for being adjusted to different capacitance values in an ignition stage and a reaction stage of the process chamber. According to the scheme, the problems of ignition difficulty and bombardment of plasma on the dielectric window can be solved, and meanwhile the problem that abnormal discharge is likely to be caused by the fact that the radio frequency coil adopts a lifting structure can be solved.

The invention discloses a monitoring method and device for a switch cabinet and a storage medium, and relates to the technical field of power system fault detection.The method comprises the steps that ultrasonic information and temperature information of a target switch cabinet are obtained, and the target temperature information comprises at least one of temperature rising and temperature non-rising; determining partial discharge information of the target switch cabinet based on the ultrasonic information; based on the partial discharge information, the partial discharge state of the target switch cabinet is determined, and the partial discharge state comprises at least one of an abnormal discharge state and a non-abnormal discharge state; based on the partial discharge state and the temperature information, a monitoring state of the target switch cabinet is determined, and the monitoring state at least comprises one of an early warning state and a non-early warning state; and when it is confirmed that the monitoring state is an early warning state, generating early warning prompt information. The technical problem that potential safety hazards are easily caused by insulation aging and partial discharge of the switch cabinet is solved.

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 provides a GIS flashover fault risk assessment method and device, and belongs to the technical field of electric power engineering. The method comprises the steps that the defect type of the GIS flashover fault, the potential of a region where the GIS flashover fault is located and the scale magnitude of the GIS flashover fault are acquired; determining the defect form of the GIS flashover fault according to the defect type, the regional potential and the scale magnitude; determining at least two defect quantitative indexes of the GIS flashover fault according to the flashover evolution characteristics of the defect form, the physical process of abnormal discharge and the interface characteristics; obtaining values of at least two defect quantitative indexes corresponding to the defect form through a preset database; and fusing the values of the at least two defect quantitative indexes of the GIS flashover fault to obtain a risk assessment result of the GIS flashover fault. According to the method provided by the invention, risk assessment can be carried out on the GIS flashover fault more accurately.

The invention discloses an intelligent sorting method and system applied to a conveyor belt, a medium and a program product, and the method comprises the steps: calculating the stacking density of articles, and determining the stacking density as an article compression ratio; determining the discharge port as an abnormal discharge port; reading weight parameters, volume parameters and target discharge ports of the to-be-sorted articles on the conveyor belt; marking the to-be-sorted articles corresponding to the target discharge port which is the abnormal discharge port as to-be-adjusted articles, and calculating a density value; calculating a linear distance according to the physical space coordinates of other discharge ports, and generating an initial standby discharge port grade table according to the linear distance; calculating corresponding residual capacity and residual bearing capacity; calculating a matching coefficient; reordering to obtain a final standby discharge port grade table; the discharging port with the first sequence in the final standby discharging port grade table serves as a temporary target discharging port; and the sorting execution device is controlled to transfer the to-be-adjusted articles to the temporary target discharging opening. The sorting efficiency of the conveying belt when the material opening breaks down is improved, and then the yield of objects sorted by the conveying belt is improved.

The invention discloses thin film deposition equipment and a deposition method. The thin film deposition equipment comprises a first gas inlet system located at the top in a reaction cavity and used for introducing process gas and a precursor, and the process gas is used for dissociating to generate plasma; and the second gas inlet system is positioned at the bottom in the reaction cavity and is used for introducing current-carrying gas from bottom to top when the precursor is introduced from top to bottom by the first gas inlet system to deposit the conductive film on the wafer, so that the current-carrying gas forms a protective gas curtain in a plasma field in the upper and lower areas of the edge of the wafer. By means of the thin film deposition equipment, the local density of the plasma fields in the upper area and the lower area of the wafer edge in the technological process of conductive thin film deposition can be adjusted, the stability of the plasma fields is improved, and therefore the abnormal discharge phenomenon occurring in the deposition process is reduced, and the film forming quality and the technological stability are improved.

An X-ray generation apparatus includes an X-ray generation tube. The tube includes an insulating tube with a first opening end and a second opening end, a cathode arranged to close the first opening end of the insulating tube and including an electron emitting portion, and an anode arranged to close the second opening end and including a target that generates X-rays when electrons from the electron emitting portion collide; and an accommodating container configured to accommodate the X-ray generation tube, wherein the accommodating container has a third opening end, and the anode is arranged to close the third opening end, the accommodating container is filled with an insulating liquid to contact a part of the anode, and at least a part of an outer surface of the insulating tube is surrounded by a member so as to reduce abnormal discharge between the cathode and the anode via the insulating tube.

The invention relates to the technical field of power equipment detection, and particularly discloses a cable partial discharge detection method and system under high noise, and the method comprises the steps: dividing a cable into a plurality of monitoring regions, employing a current sensor to collect a current pulse signal of each region in real time, and enabling the current pulse signal to comprise the current pulse frequency and repetition rate; current pulse frequency fluctuation characteristics and current pulse repetition rate characteristics are extracted, and corresponding characteristic indexes are generated; then, by comprehensively analyzing the characteristic index of each region, calculating a comprehensive index and comparing the comprehensive index with a preset threshold value, whether the partial discharge phenomenon exists in the region or not is judged; further analyzing the deviation between the real-time discharge frequency and the historical normal discharge data of the region which is judged to be partial discharge, performing anomaly detection by using an isolated forest model, and judging whether the discharge is abnormal or not; when abnormal discharge is detected, the system automatically starts an early warning and regulation and control mechanism to carry out voltage regulation or temperature control so as to avoid equipment damage or faults.

A process chamber and an upper electrode device thereof, and semiconductor process equipment. The upper electrode device (10) comprises a radio frequency coil (11) and an adjustable capacitor. The radio frequency coil (11) is wound outside a tubular shield (70) of the process chamber, and the tubular shield (70) is sleeved outside a plasma generation chamber of the process chamber. The adjustable capacitor is connected in series to the radio frequency coil (11), and the adjustable capacitor is configured to be adjusted to different capacitance values during an ignition phase and a reaction phase in the process chamber. The described solution can solve the problems of difficult ignition and plasma bombardment to dielectric windows, and can also mitigate the problem of abnormal discharge being liable to occur due to using lifting structures for radio frequency coils (11).

The utility model relates to the technical field of power distribution network overhead line operation state monitoring, in particular to an abnormal discharge multi-terminal positioning device for a power distribution network overhead line. The abnormal discharge multi-terminal positioning device for the distribution network overhead line comprises a plurality of abnormal discharge detection modules which are used for acquiring feature information of an abnormal discharge signal and transmitting the feature information to a control module; the control module is used for receiving and transmitting the characteristic information of the abnormal discharge signal to the abnormal discharge positioning module; the abnormal discharge positioning module is used for receiving the characteristic information of the abnormal discharge signal and positioning an abnormal discharge source; the abnormal discharge detection module comprises a high-frequency current transformer and is used for collecting and transmitting abnormal discharge signals; the signal conditioning unit is used for receiving, denoising and amplifying the abnormal discharge signal and transmitting the abnormal discharge signal to the microprocessor unit; the microprocessor unit is used for receiving and extracting feature information of the de-noised and amplified abnormal discharge signals; and the GPS unit is used for determining the position information of the abnormal discharge detection module and realizing the synchronization of detection starting time.

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 utility model discloses a PPR female bent pipe fitting side appearance detection device which comprises an equipment mounting table, a rotating table, a camera shooting and light source mechanism, a defective product removing mechanism, an abnormal product discharging mechanism, a feeding conveying line and a discharging conveying line, and the camera shooting and light source mechanism, the defective product removing mechanism and the abnormal product discharging mechanism are sequentially arranged on the side face of the rotating table. The camera shooting and light source mechanism comprises a camera and a light source, the camera is used for detecting the appearance of the side face of the female bent pipe fitting, the defective product removing mechanism comprises a defective product discharging and blowing device and a defective product receiving hopper, and the defective product discharging and blowing device is arranged on one side of the rotating table and is aligned with the defective product receiving hopper. And the abnormal discharge control cylinder is connected with the discharge guide rod. According to the utility model, a plurality of cameras are adopted to carry out omnibearing detection on the appearance of the side surface of the PPR female elbow pipe fitting, so that the detection efficiency is greatly improved, the situation of missing detection of defective products is avoided, and abnormal products can be discharged in time when abnormal conditions occur.

The embodiment of the invention discloses a method, a device and a system for identifying abnormal discharge of a sulfur hexafluoride circuit breaker. The method comprises the following steps of: receiving a gas pressure data sequence of the sulfur hexafluoride circuit breaker, which is acquired and uploaded by a sulfur hexafluoride density relay in real time; drawing a gas pressure time curve of the sulfur hexafluoride circuit breaker according to the gas pressure data sequence; determining a communication mode of performing data communication with the sulfur hexafluoride density relay at the current moment, and obtaining a curve change extreme value of the gas pressure time curve based on the communication mode; and comparing the curve change extreme value with a preset pressure change threshold value, and when the curve change extreme value is greater than the preset pressure change threshold value, judging that abnormal discharge exists in the sulfur hexafluoride circuit breaker. Whether abnormal discharge occurs in the sulfur hexafluoride circuit breaker or not is judged by monitoring the gas pressure sudden increase phenomenon during arc discharge in the sulfur hexafluoride circuit breaker, and the problem that a mechanical density relay cannot monitor an abnormal discharge event in the circuit breaker is solved.

The present application discloses a fault identification and early warning method and system for a power transmission line, the method comprising: receiving a fault flashover signal, determining the occurrence area of the fault flashover signal, and obtaining a target image; determining whether there is abnormal discharge in the transmission line in the occurrence area; if so, performing image recognition to obtain a fault source to be tested; obtaining the inclination of the tower in the occurrence area and the electromagnetic field and radar changes; determining the movement path of the current fault source, determining the fault source category through image capture, and determining the target fault source; obtaining meteorological data through micro-meteorological sensors and network meteorological weather, and obtaining the future and real-time dancing amplitude and dancing frequency of the transmission line; combining the dancing amplitude, dancing frequency, tree obstacles, super-high engineering vehicles, floating objects, and lightning strikes, which are greater than the warning value, starting image capture to determine the target probability and image of the target fault source causing a secondary fault on the transmission line, determining the high-risk interval segment, and sending the warning picture and video to the background in real time.

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.

The invention provides a zero-value insulator detection method for a direct-current ultra-high-voltage power transmission line. The method comprises the following steps: acquiring an infrared image of the direct-current ultra-high-voltage power transmission line; if the infrared image is abnormal, acquiring an ultraviolet image; if the ultraviolet image has the abnormal discharge characteristic, determining that a zero-value insulator and a corresponding potential abnormal region exist; performing ultrasonic detection on the potential abnormal region to obtain an ultrasonic signal; if abnormal signals exist in the ultrasonic signals, electric field distribution analysis is carried out on the direct-current ultra-high-voltage power transmission line; and if electric field distortion exists in the electric field distribution of the direct-current ultra-high-voltage power transmission line, determining that a zero-value insulator exists, and generating a zero-value insulator detection report of the direct-current ultra-high-voltage power transmission line. According to the invention, the zero-value insulator can be accurately identified and positioned, and the detection efficiency of the zero-value insulator is improved. The invention further provides a zero-value insulator detection system of the direct-current ultra-high-voltage power transmission line, a computer readable storage medium and electronic equipment, which have the above beneficial effects.

To provide a technique capable of reliably determining whether an abnormal discharge occurs even if a configuration for determining whether the abnormal discharge occurs in an image-forming section is realized by software.SOLUTION: A main control circuit 101 executes first determination processing for determining whether an abnormal discharge occurs in an image-forming section 20 on the basis of an inputted discharge detection signal, and first instruction processing for instructing a relay 108 to stop DC24 V voltage to a high-voltage power supply board 112 when determining the occurrence of the abnormal discharge in the image-forming section 20 in the first determination processing, and a sub-control circuit 105 executes second determination processing for determining whether the abnormal discharge occurs in the image-forming section 20 on the basis of the inputted discharge detection signal, and second instruction processing for instructing the relay 108 to stop DC24 V voltage to the high-voltage power supply board 112 when determining the occurrence of the abnormal discharge in the image-forming section 20 in the second determination processing.SELECTED DRAWING: Figure 3

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 invention belongs to the technical field of power supply devices, and particularly relates to an emergency power supply device based on a virtual power plant, which comprises a box body, a storage battery is arranged in the box body, two binding posts are symmetrically and fixedly connected to the bottom of the storage battery, and a cover plate is detachably mounted on the rear side of the box body. And two connecting sleeves are inserted into the bottom of the box body in a penetrating manner. According to the invention, through the arrangement of the connecting assembly, when overload or short circuit occurs at the binding post, the fuse can be broken from the notch, and then the metal connecting ring can sleeve the insulating column under the pulling of the reset spring, so that the disconnection operation of the binding post and the connecting column is realized, and the safety of household electrical equipment is further protected; moreover, the fused fuse can be completely separated from the upper half part of the fuse under the pulling of the metal connecting ring, thereby avoiding the abnormal discharge caused by the too close fracture part of the conventional fuse, and improving the safety after the fuse is fractured.

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.