645 results about "Gas insulation" patented technology

The invention belongs to the technical field of intelligent control, and particularly relates to an intelligent regulation and control method for an operating environment in an SF6 ring main unit. The method comprises the following steps: firstly, acquiring temperature, gas pressure and humidity data of a plurality of sampling points in the ring main unit, and constructing a time sequence environment data set through time synchronization and missing interpolation processing; analyzing the temperature data, extracting fluctuation characteristics, determining an environment disturbance factor in combination with an electric arc trigger intensity index, and obtaining a cabinet body temperature control safety factor in combination with a dynamically adjusted temperature rise threshold and a gas insulation state; then constructing an environment equivalent thermal inertia model and a hot-pressure covariant model based on historical data, and calculating a thermal stability index of the cabinet body; and finally, whether adjustment is triggered or not is judged according to the thermal stability index and the temperature control safety factor, if yes, a temperature abnormal area is positioned through a convolutional neural network and a clustering method, the temperature control response level is calculated, a temperature control strategy library is called to be matched with adjustment parameters, and accurate control is achieved.

The invention discloses a live detection method for insulation defects of high-voltage power equipment. The method comprises the following steps: firstly, synchronously arranging ultrahigh frequency sensors and acoustic emission sensors on a plurality of monitoring points on the surface of a gas insulated switchgear shell to form an array, and synchronously acquiring signals for filtering pretreatment; then, pulse events are extracted from the two types of signals respectively, and associated pulses in a time window are matched into matched pulse pairs representing the same discharge source; then, carrying out time-frequency transformation on the ultrahigh frequency and acoustic emission pulse waveform in each matched pulse pair, carrying out joint noise reduction by calculating a coherence coefficient between time-frequency distribution matrixes, and extracting a joint feature vector containing an energy ratio, a time parameter ratio and a frequency difference from the denoised time-frequency matrix; according to the invention, multi-source signals are fused, and high-sensitivity detection, high-precision positioning and high-accuracy identification of insulation defects are realized.

The invention belongs to the technical field of electromechanical engineering and power transmission and transformation, and particularly relates to a multi-loop gas insulation power pipe gallery, a power transmission system and a control method. The multi-loop gas insulation electric power pipe gallery comprises a controller and a pipe gallery main body. The pipe gallery main body comprises a pipe gallery outer wall, two bus bars installed in the pipe gallery outer wall, a plurality of connecting buses, a standby pipeline bus and a plurality of single-phase pipeline buses. The standby pipeline bus, the two bus bars and the gas insulation pipeline bus assemblies are fixedly installed in the outer wall of the pipe gallery through fixing structures. The standby pipeline bus is connected between the two bus bars; the single-phase pipeline bus comprises a first connecting section, a first main body section and a second connecting section which are sequentially arranged along the axial direction; the two ends of each first main body section are respectively connected with the two bus bars through a connecting bus bar, the two ends of each first main body section are respectively provided with an isolating switch, and each connecting bus bar is provided with an isolating switch; and the controller is used for controlling the on-off of each isolating switch.

The invention provides a temperature rise determination method for gas insulated power transmission equipment, and the method comprises the steps: obtaining a two-dimensional multi-section model corresponding to the gas insulated power transmission equipment composed of a plurality of standard sections based on the structure parameters of the gas insulated power transmission equipment; based on the two-dimensional multi-section model, establishing a two-dimensional multi-section field-circuit coupling model through a Kirchhoff voltage and current equation and an electromagnetic field control equation; through the two-dimensional multi-section field-circuit coupling model, eddy current field distribution and ohmic loss of the gas-insulated power transmission equipment can be rapidly determined. Taking the ohmic loss as heat source excitation of a heat flow coupling field control equation, and solving through a finite volume method to obtain radial temperature rise in the gas insulated power transmission equipment; evaluating the thermal stability of the gas-insulated power transmission equipment by combining the temperature rise of the interior of the gas-insulated power transmission equipment along the axial direction under different working conditions; according to the technical scheme, the accuracy and efficiency of transient temperature rise analysis of the gas insulated power transmission equipment can be effectively improved.

A compression sealing gasket and a sealing system of a gas-insulated portion of a voltage apparatus. The sealing system includes two components fastened together, wherein each component includes an assembly face, and a compression sealing gasket that is arranged axially between the assembly faces. The compression sealing gasket includes a ring-shaped main body having a main axis. The main body has a generally flat planar configuration that extends perpendicular to the main axis and includes an outer side, an inner side, and end faces which delimit the main body along the main axis and connect the sides. The gasket further includes a lip projecting upwards in axial direction parallel to the main axis. The lip is arranged in a distance to both sides and engages a ring-shaped fixation groove formed in an assembly face. The fixation groove receives the lip of the gasket with slight compression.

The invention discloses a gas insulation cabinet on-line monitoring method and device, and relates to the technical field of insulation cabinets, and the method comprises the steps: building a discharge signal category library based on a gas insulation cabinet off-line test; a multi-channel sensing unit is optimally arranged in the key area to collect partial discharge signals; performing time-sharing superposition on the multi-channel signals, performing fast Fourier transform to obtain a frequency domain amplitude spectrum, and further extracting voltage frequency domain envelope of the insulation cabinet and voltage energy distribution of the insulation cabinet; calculating an energy distribution difference value with a category library by dynamically adjusting a frequency weight, calculating a frequency domain envelope similarity value by using a dynamic time warping method, obtaining a discharge signal category matching value by combining the two values, and identifying a discharge type. Based on the discharge type and the dielectric characteristics, an energy gradient estimation method is adopted to realize discharge source positioning; and collecting the time sequence characteristics of the positioning points for trend analysis to obtain a partial discharge signal evolution value, dividing the discharge risk level according to the partial discharge signal evolution value, and completing online monitoring and early warning.

The invention discloses a parallel double-fracture collaborative breaking structure and method of a vacuum circuit breaker, and belongs to the technical field of circuit breaker structures. The structure comprises a spring operating mechanism, a current sharing mechanism, a transmission mechanism and a double-fracture circuit breaker assembly; the spring operating mechanism is arranged outside a sealed gas box of the gas insulated switchgear, and the spring operating mechanism is connected with the current sharing mechanism and drives the current sharing mechanism to move; the transmission mechanism comprises an upper motion guide rod and a lower motion guide rod, one ends of the upper motion guide rod and the lower motion guide rod are connected with the current sharing mechanism, the other ends are connected with the double-break circuit breaker assembly, and the motion consistency of the transmission mechanism is driven and controlled through the current sharing mechanism; the double-break circuit breaker assembly is connected with the transmission mechanism, and the transmission mechanism drives the double-break circuit breaker assembly to move and is used for switching on and switching off the vacuum circuit breaker switch. According to the invention, the current nonuniformity of the parallel multi-break vacuum circuit breaker in the opening and closing process can be effectively and structurally reduced, and the safety and reliability of power grid operation are improved.

The invention provides an efficient design optimization method and platform for gas insulated power transmission equipment, and the method comprises the steps: obtaining a variable set composed of a plurality of variable values according to a structure variable interval of the gas insulated power transmission equipment, carrying out the scanning calculation of the variable set, and obtaining the corresponding vortex field distribution and ohmic loss; determining a target loss value corresponding to each variable combination through a loss regression function; taking the target loss value as heat source excitation input of a thermal circuit model to obtain a temperature target function; obtaining a total cost objective function of the unit length according to the cost of the metal material and the internal insulating gas of the unit length equipment; solving the objective function and the nonlinear constraint function through a multi-objective particle swarm optimization algorithm to obtain a Pareto optimal solution set; determining a final target design scheme from the Pareto optimal solution set by adopting an approximate ideal solution sorting method; according to the technical scheme, the working efficiency of design optimization of the gas insulated power transmission equipment is improved, and the research and development period of the equipment is shortened.

The invention relates to the technical field of ring main unit detection, and particularly discloses a detection device based on a gas insulation ring main unit, which comprises a detector, two first probes and a second probe which form an array type detection system, and the first probes and the second probe are connected through a mounting frame; the two first probes are respectively mounted at the telescopic ends of the two first telescopic rods; the first probe and the second probe comprise movable ends and fixed shells, the first probe faces and is parallel to the side face of the cabinet body, and telescopic pieces are arranged between the movable ends and the fixed shells. The two first probes and the second probe are stereoscopically distributed through the mounting rack, and are suitable for rapid positioning of leakage discharge positions, and the positions of the first probes can be freely adjusted through the first telescopic rods and the first hinge structures. And the position of the second probe can be freely adjusted through a second telescopic rod, a third telescopic rod and a second hinge structure, so that the usability is improved.

The utility model discloses an environment-friendly gas insulation ring main unit, which comprises a ring main unit device, the ring main unit device comprises a gas insulation ring main unit, a support frame, a clamping plate, a nitrogen tank, a valve, a fixing bolt, a gas injection pipe, an electromagnetic valve, a handle, a pressure sensor and a rubber sealing ring, the support frame is arranged at the top end of the gas insulation ring main unit, and the clamping plate is arranged at the bottom end of the gas insulation ring main unit. The clamping plates are evenly arranged, the top ends of the clamping plates are fixedly connected to the bottom end of the supporting frame, the nitrogen tank is fixedly installed at the top end of the supporting frame, and the valve is fixedly installed on an output pipe at one end of the nitrogen tank. According to the utility model, nitrogen is used as an insulation medium, the insulation effect of the gas insulation ring main unit is effectively improved, safe and stable operation of an electric power system is guaranteed, automatic monitoring and adjustment of the internal air pressure of the gas insulation ring main unit are realized, and when the internal air pressure is lower than a preset value, nitrogen can be automatically supplemented, and the internal air pressure is kept stable.

The invention discloses a GIL / GIS epoxy insulator residual stress suppression method and device based on sound field assisted post-curing, and the main steps are as follows: after the epoxy insulator is cured at a first stage, the curing degree is gt; and the temperature of the liquid medium in the container filled with the liquid medium and the ultrasonic vibration auxiliary curing time are regulated and controlled, and the post-curing process of the GIL / GIS epoxy insulating part is completed, so that the residual stress at the bonding position of the insulator epoxy and the metal is effectively inhibited, and the mechanical property of the epoxy resin insulator is remarkably improved. The mechanical performance of the epoxy insulating part in the gas insulated switchgear under the complex operation condition is improved.

The invention relates to the technical field of ring main unit engineering, in particular to a state evaluation method and system for a gas insulation environment-friendly ring main unit, and the method comprises the steps: obtaining space probe distribution coordinates and gas concentration data in the environment-friendly ring main unit, and generating a leakage gas three-dimensional concentration matrix according to the leakage gas three-dimensional concentration matrix; constructing a gas concentration distribution prediction model matched with the environment-friendly ring main unit, inputting the leakage gas three-dimensional concentration matrix and the geometric parameters of the cabinet body into the gas concentration distribution prediction model, and outputting to obtain predicted gas concentration distribution; generating a gas leakage behavior parameter, and generating an insulation failure probability and an electric ignition risk index; and generating an insulation performance evaluation index, and generating state evaluation of the environment-friendly ring main unit according to the insulation performance evaluation index. According to the method, the gas leakage behavior is accurately simulated, so that the insulation failure probability and the electric ignition risk index are quantified, and the accuracy of state evaluation of the ring main unit is greatly improved.

The utility model discloses an SF6 gas insulated metal-enclosed switchgear intelligent leak detection device, which comprises a host and a plurality of detection parts, the detection parts are in contact with the host through gas pipes, each detection part comprises a gas filter, a gas mold cover and a sealing band, the gas filter is connected to a hand valve switch on the gas mold cover through a gas pipe, and the sealing band is connected to the gas mold cover through a gas pipe. The end part of the gas mold cover is connected with a sealing strap, the sealing strap is bound on the SF6 gas insulated metal-enclosed switchgear, and the gas filter is connected to a host through a gas pipe and is switched on and off in real time by using a hand valve. The SF6 gas-insulated metal-enclosed switchgear leak detection device has the advantages that the detection points are wrapped by the gas mold cover with excellent sealing performance, the detection part is conveniently fixed on the SF6 gas-insulated metal-enclosed switchgear by the sealing bridle, a plurality of leakage points can be detected at the same time, each detection point can be independently controlled, and the leak detection efficiency is high; the gas mold cover can be repeatedly used, the labor intensity is small, installation and operation are convenient, and the maintenance complexity is also reduced.

The invention belongs to the technical field of looped network boxes, and particularly relates to an environment-friendly gas insulated looped network box which comprises a supporting mechanism, environment-friendly gas insulated looped network box assemblies are installed on the upper surface of the supporting mechanism in a path array mode, and heat dissipation and fire extinguishing mechanisms are arranged on the two sides of the surfaces of the environment-friendly gas insulated looped network box assemblies. A cooling mechanism is installed on one side of the environment-friendly gas insulation ring main unit assembly. Through cooperation of the structure, when the temperature of the environment-friendly gas insulation ring main unit assembly is higher than a threshold value, the driving motor is started, so that the overturning plate rotates, and other environment-friendly gas insulation ring main unit assemblies attached to the two sides of the environment-friendly gas insulation ring main unit assembly are pushed to move; the influence of the temperature of the environment-friendly gas insulation ring main unit assembly on other environment-friendly gas insulation ring main unit assemblies is avoided, the carbon dioxide and ammonium phosphate salt dry powder extinguishing agent is sprayed into the environment-friendly gas insulation ring main unit assembly through the spraying pipe, and fire extinguishing treatment is conducted on open fire in the environment-friendly gas insulation ring main unit assembly.

The invention discloses a reverse operation limiting structure for a slow-acting double-shaft three-station mechanism, which relates to the technical field of accessories of medium-voltage gas insulated metal-enclosed switchgear and comprises a mechanism bracket, a locking part and a limiting part. The mechanism support is rotatably connected with an indication shaft, a grounding operation shaft and an isolation operation shaft, and linkage is realized through a gear set. The locking part is matched with the elastic pin assembly through the locking disc, and locking of the indicating shaft is achieved. The limiting part is of an elastic locking structure, is arranged at the ends, penetrating out of the mechanism front plate, of the grounding operation shaft and the isolation operation shaft, is in an unlocking state when no external force is applied to the operation handle, and can limit the rotation angle of the operation shaft after the external force is applied. The limiting part is arranged at the foremost end of the operation shaft, so that timely and reliable mechanical limiting of reverse misoperation is realized, damage to a mechanism transmission part and a switch body is effectively prevented, and operation safety is guaranteed. The structure is ingenious, the number of parts is small, the occupied space is small, the reliability is remarkably improved, and the cost is reduced.

The invention belongs to the technical field of switch equipment, and particularly relates to a supporting assembly for gas-insulated metal-enclosed switch equipment, which comprises a hexagonal sealing box, three circuit breakers are arranged in the sealing box, the three circuit breakers are respectively connected with three buses, and the three circuit breakers are respectively provided with a magnetic quenching mechanism. The upper end face of the sealing box communicates with an arc discharging channel, a gate plate driving mechanism is arranged in the arc discharging channel and comprises a sealing gate plate horizontally penetrating through the right wall of the arc discharging channel, and the sealing gate plate is in sealed sliding connection with the front inner wall and the rear inner wall of the arc discharging channel. The arc extinguishing device has the advantages that when an arcing fault occurs, arc extinguishing can be effectively carried out, an arc discharge channel can be rapidly opened, gas after arc extinguishing in the sealing box is rapidly discharged in cooperation with high-voltage and dry air, box body explosion accidents are effectively avoided, and the equipment safety is improved.

The present invention relates to a spacer (20) for a gas insulated switchgear. In the spacer (20), a spacer body (22) made of an insulating material forms a skeleton. A seating groove (24) surrounding the edge of the spacer body (22) is formed. A seal (30) is seated in the seating groove (24). At least one gas connection path (26) is formed in the spacer body (22) to communicate between a gap (S) formed inside the seating groove (24) and the inside of the enclosure (32).

The invention discloses a GIS equipment SF6 micro-water density lightweight online monitoring method based on double threshold triggering, and relates to the field of power equipment.The method comprises the steps that on the basis of a fusion mechanism of nonlinear drift characteristics and historical calibration parameters, sensor coefficients are calibrated; synchronously acquiring partial discharge and sulfur hexafluoride micro-water signals through a sensor; the method comprises the following steps: pre-screening abnormal data segments in partial discharge and sulfur hexafluoride micro-water signals through double thresholds of amplitude and time, and extracting alignment time marks and frequency domain energy, pulse density and micro-water slope features to obtain normalized features; inputting the normalized features into a classifier, and outputting the fault type and confidence of the gas insulated switchgear; and generating a maintenance and replacement instruction of the gas insulated switchgear according to the fault type and the confidence coefficient. According to the invention, through fusion of the high-precision capacitive humidity sensing network and the intelligent diagnosis algorithm, real-time sensing and risk early warning of the health state of the air chamber are realized.

The utility model discloses a novel environment-friendly gas insulated looped network box which comprises a box body. The box doors are arranged on the front face of the box body, the box doors are all hinged to the box body, strip-shaped plates are hinged to one sides of the box doors, and gaps between the strip-shaped plates and the box doors are very small; the first U-shaped pipe and the second U-shaped pipe are arranged on the side edges of the front face and the back face of the box body, the middle of the top end of the first U-shaped pipe and the middle of the top end of the second U-shaped pipe are communicated through a guide pipe, double air suction pumps are arranged in the middle of the guide pipe, and when the box door is opened for overhauling, the box door is opened to drive the strip-shaped plate to press the pressing switch, so that the time delay switch works; after a certain period of time, the double getter pumps are driven to generate ultra-large suction force which is transmitted into the first U-shaped pipe and the second U-shaped pipe, so that gas on the side of the box body is sucked back into the sleeve through the gas holes, the gas is detected by the nitrogen detector, whether leakage occurs or not is judged, and detection can also be performed by manually pressing the pressing switch when maintenance is not performed.

Heavy inert gas insulation layers are provided for one or more components of a launch system for a plurality of missiles. The layer may be integrated into the walls of the components or provided in inserts attached to the components. An inert gas fills a sealed void space in the walls or the insert. The inert gas has a density of at least 1.5 Kg / m3 and a thermal conductivity (Tcond_gas) of no greater than two-thirds of a thermal conductivity of air (Tcond_air) to form the heavy inert gas insulation layer. The inert gas may be Argon, Krypton, Xenon or a synthetic gas and is suitably held at a pressure of 760 Torr (1 atmosphere) or greater at sea level. The heavy inert gas insulation layer delays desensitization or inhibits premature reaction of the energetic materials inside the missiles due to high external temperatures. The insulation layers allow for more compact and dense configurations of the launch system and missiles.

Heavy inert gas insulation layer(s) are provided for containers configured to contain components that include an energetic material. The heavy inert gas insulation layer delays desensitization or inhibits premature reaction of the energetic material due to high external temperatures. The layers may be formed in hollow walls of the container itself or as inserts that are attached to the container. An inert gas fills a sealed void space in the walls or the insert. The inert gas has a density of at least 1.5 Kg / m3 and a thermal conductivity (Tcond_gas) of no greater than two-thirds of a thermal conductivity of air (Tcond_air) to form the heavy inert gas insulation layer. The inert gas may be Argon, Krypton, Xenon or a synthetic gas and is suitably held at a pressure of 760 Torr (1 atmosphere) or greater at sea level.

The invention belongs to the technical field of ring main units, and discloses a ring main unit based on dry air insulation and intelligent monitoring. The ring main unit is provided with a cable chamber working bin, a numerical control monitoring mechanism and a protection mechanism, the numerical control monitoring mechanism is provided with a control chamber and a real-time monitoring assembly, the real-time monitoring assembly comprises a monitoring host and a conduction wire, and the monitoring host is used for monitoring working state parameters of a switch chamber in real time through the conduction wire; the protection mechanism is provided with a mechanism chamber and the switch chamber, and the switch chamber is filled with positive-pressure dry air and is provided with an epoxy resin composite insulator. Based on the above structure, a dual insulation system of dry air insulation and epoxy resin composite insulators is adopted, a basic monitoring architecture capable of sensing the state of a switch room in real time is constructed while environmental protection is realized to replace SF6, and the problems of environmental protection defects and state monitoring deficiency of a traditional gas insulation ring main unit are solved.

The utility model discloses a primary and secondary fusion environment-friendly gas insulated looped network box, which belongs to the technical field of electrical equipment, and comprises a box body, the top of the box body is fixedly connected with a top cover, the top cover is internally provided with a cavity, and a plurality of activated carbon filter plates are fixedly connected in the cavity. Two air inlet channels are fixedly installed at the bottom of the top cover, first exhaust fans are installed in the air inlet channels, air inside and outside the box body can be rapidly circulated through cooperation of the first exhaust fans and second exhaust fans, heat generated inside is discharged out of the box body along with flowing of the air, and the heat dissipation efficiency is improved. And meanwhile, the linear guide rails and the supporting and guiding assemblies are additionally arranged, so that the main body of the electrical element can be directly pulled out from the box body, and the maintenance or the mounting and dismounting operation of the electrical element by a worker is more convenient.

The invention relates to the technical field of ring main units, in particular to an environment-friendly gas insulation ring main unit. In order to solve the problems that although a ring main unit adopting SF6 gas as an insulating medium becomes the mainstream of the industry due to performance advantages, a large amount of SF6 gas is discharged into the atmosphere during operations such as daily maintenance, troubleshooting or equipment replacement, and long-term serious negative effects are generated on the global climate, the invention provides the following technical scheme: the ring main unit comprises a cabinet body with an opening on one side; two groups of partition plates are fixedly connected in the cabinet body; the cabinet doors are hinged to the two sides of the cabinet body; the insulation box is installed in the cabinet body, and a load switch is installed in the insulation box; and the supplementing mechanism is arranged below the insulation box and used for discharging an insulation medium into the insulation box, and a positioning assembly is installed on the side face of the supplementing mechanism. The SF6 gas is effectively prevented from being directly discharged into the atmosphere, the harm of the SF6 gas to the environment is reduced, and the environment protection concept and the double-carbon target are met.

The invention discloses an operation fault diagnosis method for an environment-friendly gas insulated ring main unit, and relates to the technical field of insulated ring main units. The method comprises the following steps: collecting partial discharge data of the metal closed air chamber, and extracting a time-frequency complex matrix, repetition rate density and phase angle characteristics; calculating a frequency energy comprehensive characteristic value in combination with frequency energy center analysis and a high-frequency energy ratio; positioning a discharge signal position sequence by using an inverse distance weighting method, fusing the position sequence, the frequency energy comprehensive characteristic value, the repetition rate density and the phase angle characteristic, mapping into a discharge signal pseudo-color spectrogram, and marking the discharge signal pseudo-color spectrogram; inputting the labeled spectrogram into a convolutional neural network for training, collecting barometric disturbance data through a micro differential pressure sensor, extracting features, and inputting the features into a long-short-term memory network for training; and collecting a discharge pseudo-color spectrogram and barometric disturbance characteristics in real time, inputting the collected discharge pseudo-color spectrogram and barometric disturbance characteristics into the trained convolutional neural network and long-short-term memory network model, outputting a discharge signal category and barometric disturbance characteristic prediction value, and calculating an insulation ring main unit risk value.

The invention relates to the technical field of gas insulation of power equipment, in particular to a method, a system and equipment for quickly proportioning and mixing SF6 / N2 mixed gas in GIS (Gas Insulated Switchgear) equipment and a storage medium. GIS equipment geometric parameters are obtained, a pipeline model is constructed, and the effective volume of the equipment is derived based on a correction state equation introducing a compression factor Z; establishing a kinetic model of an SF6 / N2 diffusion rule, and simulating gas flowing, diffusion and mixing processes through a Standard k-epsilon turbulence model and a component transport model; performing real-time concentration detection on the mixed gas by using an infrared spectroscopy, and establishing a relation model of light intensity attenuation and gas concentration based on a Lambert-Beer law; and performing dynamic gas distribution control according to a detection result, and adjusting the flow of each gas branch through a mass flow controller to realize a target mixing ratio. Through multi-level technology integration, the technical problems of inaccurate volume calculation, non-uniform gas distribution and obvious detection hysteresis in a traditional mixing method are solved, and + / -0.5% mixing precision control and rapid mixing within 5 minutes are realized.

The invention provides an intelligent gas supplementing method for GIS mixed gas, and relates to the technical field of operation and maintenance of high-voltage electrical equipment. According to the method, the pressure, temperature, humidity and mixed gas component concentration of the gas-insulated metal-enclosed switchgear are collected in real time through an intelligent sensor, and a temperature-pressure reference model is established for temperature compensation and leakage judgment; when the pressure deviation exceeds a threshold value, calculating the total amount of leaked gas and the gas supplementing demand quantity of each component, automatically supplementing gas according to a target proportion, and stopping gas supplementing after the pressure and the component concentration reach a target interval; the data of the whole gas supply process is used for model adaptive optimization, precise detection and intelligent gas supply of GIS mixed gas are realized, and the monitoring precision, the control reliability and the system self-optimization capability are improved.

This invention discloses a pole-type environmentally friendly gas-insulated switchgear, belonging to the field of switchgear. It includes a gas cabinet with a sealed environmentally friendly gas chamber inside. An isolating bracket and a pole-type bracket are both fixedly installed within the environmentally friendly gas chamber. A disconnecting switch is fixedly mounted on the isolating bracket, with its upper end electrically connected to an upper conductive terminal. A pole-type circuit breaker is fixedly mounted on the pole-type bracket, with its upper end electrically connected to the lower end of the disconnecting switch. The lower end of the pole-type circuit breaker is electrically connected to a lower conductive terminal. The upper conductive terminal is sealed on the upper part of the environmentally friendly gas chamber, and the lower conductive terminal is sealed on the lower part of the environmentally friendly gas chamber. Through the rational installation and structural improvements of the upper and lower conductive terminals, the disconnecting switch, the pole-type circuit breaker, the isolating bracket, and the pole-type bracket within the gas cabinet, the connections between these components are more compact, the environmentally friendly gas chamber is smaller, and leakage is less likely, effectively ensuring the safety of the entire device.

The isolation unit module for the GIL comprises a shell, a detachable end cover is arranged on the lower portion of the shell, a three-section type conductor assembly is arranged in the shell in the axial direction, guide cups are arranged on the two sides of the three-section type conductor assembly, the guide cups are connected with insulation basins on the outer sides of the guide cups, and the three-section type conductor assembly comprises a middle conductor. Two ends of the middle conductor are respectively connected with a detachable left side conductor and a detachable right side conductor; the three-section type detachable conductor design can quickly disassemble and take out the conductors on the two sides in a conventional state, the rotating shaft and the positioning structure enable the conductors on the two sides to rotate around the shaft by 180 degrees and then take out the conductors, collision damage when the conductors are taken out is avoided, and the design of the corner conductor and the tool interface realizes quick butt joint of test equipment. The electrical performance and the sealing performance during the test are ensured, and the test efficiency is improved.

The present application belongs to the technical field of partial discharge monitoring, and particularly relates to an on-line partial discharge monitoring method for an environmentally friendly gas insulated ring network cabinet, which comprises the following steps: obtaining real-time pulse sequences and gas chamber environment data, and obtaining initial discharge energy based on the data; extracting the mean value in the gas chamber environment data as baseline state data, and obtaining a gas deterioration factor based on real-time gas chamber environment data and the baseline state data; combining the initial discharge energy and the gas deterioration factor to obtain discharge severity; and obtaining a real-time health state score of the ring network cabinet according to the discharge severity and its evolution rate to trigger an early warning. The present application corrects partial discharge signals by means of the deterioration state of the gas chamber environment, and improves the accuracy of capturing weak discharge signals under harsh working conditions.