152 results about "Space charge" patented technology

The invention discloses an electrothermal aging test method and device for simulating the space charge effect of a cable terminal. The method comprises the following steps: S1, treating a cable sample; s2, constructing an electric heating aging platform; s3, carrying out five aging stage tests on the cable sample; s4, carrying out space charge detection on the cable samples at different aging stages; s5, analyzing correlation between a space charge accumulation rule and insulation degradation based on a charge mobility formula and an injection current formula; according to the invention, the actual working condition of the cable terminal is accurately simulated through the electrothermal collaborative aging platform, and the limitation that the space charge evolution law is difficult to reproduce in the traditional method is overcome; a weighted all-phase averaging method is adopted to process signals, and an arc-shaped sensor and a frequency domain deconvolution algorithm are combined, so that interference is effectively filtered out, and the detection stability and accuracy are improved; through correlation of charge accumulation and insulation degradation processes, an insulation failure mechanism is disclosed, fault early warning is realized, and theoretical and test support is provided for design optimization, life evaluation and operation and maintenance of the cable terminal.

The invention discloses a wide-temperature-range solid insulation space charge measurement method, and belongs to the technical field of electrical insulation test and dielectric physical measurement. A solid insulation sample is mounted between double-layer composite electrode modules in a closed high-low temperature test cavity, and a flexible compensation gasket is adopted to absorb thermal expansion difference; a PID closed-loop control system is utilized to realize accurate and stable control of the temperature of the sample in a wide temperature range; applying a direct-current bias voltage and pulse voltage superposition signal, and collecting an acoustic signal generated by space charge displacement through a wide-temperature-range PVDF piezoelectric sensor module; and based on a sound velocity and sensitivity temperature calibration curve established by a pre-experiment, carrying out deconvolution processing on a sound wave signal to correct a temperature dependence error, and finally obtaining accurate space charge density distribution at different temperatures. According to the invention, the precision and reliability of space charge measurement of the solid insulating material in a wide temperature range are effectively improved.

The invention discloses a measurement and evaluation method and system for double analysis of the aging state of a cable, and belongs to the technical field of nondestructive testing of the insulation state of electrical equipment, and the method comprises the steps: obtaining a broadband dielectric spectrum of a corresponding aging sample in any aging period, and constructing low-frequency dielectric loss data related to a plurality of aging samples; obtaining group data of a standard measurement sample corresponding to any aging sample, and constructing oxidation data about a plurality of standard measurement samples; acquiring a dielectric spectrum space charge distribution diagram based on the low-frequency dielectric loss data, and acquiring an oxidation product concentration thermodynamic diagram based on the oxidation data; obtaining an aging grading result based on the low-frequency dielectric loss data and the oxidation data; and outputting a three-dimensional aging measurement evaluation report based on the dielectric spectrum space charge distribution diagram, the oxidation product concentration thermodynamic diagram and the aging grading result. According to the measurement and evaluation method and system for double analysis of the aging state of the cable, accurate quantification of the aging degree is achieved by synchronously analyzing the dielectric response and the chemical structure change.

The invention discloses an ultrahigh-spatial-resolution time-broadening framing camera and a framing imaging method, and solves the problem that the spatial resolution of a system is reduced due to spatial dispersion caused by the space charge effect of electrons in the transition process of an existing time-broadening framing camera. According to the invention, the characteristic that the spinning period of the photoelectrons moving in a drift magnetic field is only related to the magnetic field intensity and is irrelevant to the speed distribution of the photoelectrons overflowing from the microstrip line structure is utilized, that is, the photoelectrons overflowing from the microstrip line structure drift for a fixed time; the phase of the photoelectron circular motion is consistent with the initial phase of the photoelectron when the photoelectron overflows from the microstrip line structure, that is, by designing the magnetic field intensity and the microstrip line structure voltage, it is ensured that the photoelectron advancing in a spinning mode reaches the traveling wave gating framing tube after the integer period circular motion in the magnetic drift tube; that is, the circumferential phase of the electrons reaching the traveling wave gating framing tube is the same as the phase when the photoelectrons overflow, so that the spatial resolution of the camera reaches the optimal system.

According to the ion regulation and control device, the ion guide device, the control method, the device, the equipment and the ion guide system provided by the invention, the first guide element and the deflection force field generation module are arranged, under the condition that ions are injected into the first guide element, the first guide element is controlled to apply the reverse electric field opposite to the ion transmission direction, and the deflection force field is generated; thereby trapping ions within the first guide element; controlling the deflection force field generation module to work so as to enable the ions in the first guide element to generate radial deflection; and under the condition that offset is completed, the first guide element is controlled to cancel the reverse electric field so that the first guide element can move in the transmission direction, ions in the first guide element can generate radial offset through the deflection force field generation module, the ions can be more uniformly distributed in the radial direction, and therefore the space area utilization rate is increased, and the transmission efficiency is improved. And the influence of the space charge effect is reduced.

The application relates to a satellite energy acquisition system based on space charged particle collection, belonging to the technical field of spacecraft power supply. The application aims at solving the problem that the discharge phenomenon of the space charged particles deposited on the surface of a satellite can cause physical damage to materials. The application comprises a collection capacitor used for capturing the space charged particles, forming a high-voltage electrostatic field through the accumulated charges of the space charged particles; an energy-taking conversion circuit used for converting the high-voltage electrostatic field energy stored in the collection capacitor into low-voltage electrostatic field energy and transferring the low-voltage electrostatic field energy to an energy storage capacitor; the energy storage capacitor is used for storing the low-voltage electrostatic field energy, setting a target electric field energy according to the working requirement of a rear-end load, and discharging after the target electric field energy is reached; and a switch voltage stabilizing circuit used for adjusting the discharging output voltage of the energy storage capacitor, realizing constant voltage power supply for the rear-end load. The application can reduce the charging and discharging fault risk of the surface of the satellite by collecting the particles radiated to the satellite and controllably transferring and utilizing the particles.

This application provides a method for monitoring faults in intermediate joints of 35kV ring network cables in urban rail transit, relating to the field of data processing. In this method, a cable segmentation diagram is constructed, and joint identification nodes and ring network status identifiers are generated. A synchronous observation array is established based on the station to collect transient voltage and current segments to form event evidence packages. Under the same ring network status, a set of propagation operators is constructed, and a virtual playback field is generated through recorrelation and superposition to produce a focused spectrum. Under the same operating context, a reversibility discrimination is performed to screen candidates for saturated critical states. A first focused spectrum and a second focused spectrum are generated, and structural fracture is synchronously checked. Finally, the target joint identification node is located, and the intermediate joint fault monitoring results are output. Implementing the technical solution provided in this application facilitates overcoming the dependence on continuous gradual changes and identifying the electric field reconstruction characteristics caused by space charge trap saturation, thereby improving the accuracy of abrupt degradation judgment.

The invention relates to the technical field of air sterilization and discloses a distributed multi-stage plasma air sterilization system and method applied to a large space, and the distributed multi-stage plasma air sterilization system comprises an air flow channel, multi-stage plasma generation modules distributed in the air flow channel, and a pulse driving circuit, each stage of plasma generation module comprises a dielectric barrier discharge electrode, the pulse driving circuit detects a charge composite waveform in an electrode gap in a pulse fallback stage so as to obtain a displacement current recovery time constant, and the secondary ozone concentration and the space charge characterization quantity in a flow channel are determined according to the deviation between the constant and a recovery reference. According to the invention, the self-limiting feedback of the product is realized by utilizing a discharge physical process, the contradiction between the disinfection yield demand and the ozone safety threshold value in a large-space environment is effectively reconciled, and the energy self-limiting performance is improved. And the operation safety of the distributed system in a complex environment is ensured.

The application relates to a method for evaluating space charge injection characteristics of a polypropylene elastomer blend material for cables. The method comprises: obtaining current information in a to-be-tested sample made of a polypropylene elastomer blend material and sensor signal information of a piezoelectric sensor corresponding to the to-be-tested sample under a preset test condition; determining space charge distribution information according to the sensor signal information; and determining a space charge injection characteristic evaluation result according to the current information and the space charge distribution information. The method can accurately analyze the real injected current based on the current in the to-be-tested sample under the preset test condition, obtain an accurate charge injection rate, accurately analyze the charge transport in the to-be-tested sample by using the charge injection rate, and thus improve the accuracy of the space charge injection characteristic evaluation result.

The invention discloses an electrode device and method for measuring space charges through pressure-electric field-temperature coupling, and the device comprises an upper electrode structure which comprises an upper connecting plate, a conductive bolt, cylindrical ceramic, and an upper electrode terminal; the bottom of the conductive bolt is fixedly connected with the upper connecting plate, and the top of the conductive bolt is provided with radial scales and can be in contact with a fixed surface of an external calibration platform through thread feeding; the lower electrode structure comprises a lower connecting plate, plate-shaped ceramic and a lower electrode terminal; the lower electrode terminal comprises a heating resistance wire; two ends of the high-voltage pulse unit are respectively connected to the upper and lower electrode terminals; the signal collecting and converting unit is connected with the lower electrode terminal; a to-be-tested sample is clamped between the cylindrical ceramic and the plate-shaped ceramic; the upper and lower connecting plates apply stress to a to-be-tested sample through engagement of connecting bolts; and a pressure sensor is arranged between each connecting bolt and the upper connecting plate. The device has the functions of pressure regulation and control and real-time measurement of the thickness of the sample, and can more accurately measure the space charge in the insulating material of the cable accessory.

The application belongs to the technical field of space plasma environment detection, and particularly relates to a device and method for measuring particle composition and incident direction, which comprises: a detection unit array, which is respectively provided with a plurality of independent charge input channels in an inner circumferential direction and an outer circumferential direction; each charge output channel is used for outputting different initial charge pulse signals in the inner circumferential direction and different terminal charge pulse signals in the outer circumferential direction after a space charged particle is incident at an incident angle, and delay and amplification are performed respectively; and a back-end circuit analysis processing module, which is used for obtaining actual time of flight and actual incident azimuth angle time of the charged particle according to different initial pulse signals and terminal pulse signals collected for each charge output channel, obtaining the composition of the charged particle according to the obtained actual time of flight of the charged particle, and obtaining the actual incident azimuth angle of the charged particle according to the actual incident azimuth angle time.

This application provides a simulation system and method for the AC characteristics of vacuum diodes based on a physical information neural network, belonging to the field of numerical simulation technology for electronic devices. The system includes a particle injection module, a particle deposition module, a Poisson equation solving module, an electric field calculation module, and a particle propulsion module. The particle injection module continuously injects electron particles; the particle deposition module maps particle information to a grid and calculates the electron density; the Poisson equation solving module uses a physical information neural network method to solve for the potential distribution based on the electron density; the electric field calculation module obtains the spatial electric field; and the particle propulsion module updates the particle velocity and position, forming a self-consistent coupled simulation. This application achieves continuous and smooth potential solutions through hard constraint embedding of boundary conditions, two-stage optimization, and loss scale adjustment mechanisms, reducing grid dependence and improving computational accuracy and efficiency. It is suitable for numerical simulation of vacuum electronic devices, electron beam systems, and space charge transport problems.

The invention discloses a photoelectric detection structure and a manufacturing method thereof, and a photoelectric sensor and a manufacturing method thereof, the photoelectric detection structure comprises a substrate structure and a laminated structure, the doping concentration of a second doped germanium layer in the laminated structure is not greater than that of a first doped germanium layer, and the doping concentration of the second doped germanium layer is greater than that of the first doped germanium layer in the direction away from the first doped germanium layer. The doping concentration in the second doped germanium layer is gradually reduced; the doping concentration of the third doped germanium layer is not greater than the doping concentration of the first doped germanium layer, and the doping concentration of the third doped germanium layer is gradually increased in the direction away from the first doped germanium layer, so that a symmetric electric field structure of the highly doped contact region, the gradient decreasing layer, the intrinsic absorption layer and the gradient increasing layer is constructed; a built-in electric field with space change is formed, the separation and migration capability of photon-generated carriers is enhanced, meanwhile, space charge accumulation and recombination loss under the high light intensity condition are reduced, and the response speed, quantum efficiency and saturation light current of the device are remarkably improved.

The invention relates to a rapid charge supply device for spacecraft pulse charge emission, and belongs to the field of space charging and discharging. The bottom plate is of a plate-shaped structure which is horizontally arranged in the axial direction; the cathode is of a cylindrical structure; the cathodes are in coaxial butt joint; the anode is of a cylinder structure; the anode is coaxially arranged in the inner cavity of the cathode; the root of the anode is butted with the bottom plate; the working medium sleeves the outer wall of the middle part of the anode and is filled between the cathode and the anode; the spring is sleeved on the outer wall of the anode root; one end of the spring is contacted with the bottom plate; one end of the spring contacts with the working medium end face; the insulating assembly is arranged at the opening of the axial head end of the cathode; two poles of the energy compression module are respectively connected with the cathode and the anode; the power supply is connected with the energy compression module to charge the energy compression module; a charge self-consistent cavity is formed on the outer side of the opening of the axial head end of the cathode; when the device is used for spacecraft pulse charge beam output, rapid supply in the pulse is achieved, and the spacecraft is kept electrically neutral in real time.

The invention relates to the technical field of electrical equipment testing, and particularly provides a space charge detection device and method based on optical measurement. The space charge detection device based on optical measurement comprises a sensing acquisition array which is uniformly distributed around detected equipment in the circumferential direction, full-surrounding detection of space charges is achieved, collaborative design of four optical detection technologies is adopted, multi-dimensional detection of the space charges is achieved through the complementary effect of Raman scattering, the photoacoustic effect, LIBS and the photoelectric effect, and the detection accuracy of the space charges is improved. The detection limitation of a single technology is made up; according to the space charge detection method based on optical measurement, a space-time synchronization-weight distribution-feature fusion algorithm and a signal-to-noise ratio-based adaptive weight distribution fusion algorithm are adopted, space-time synchronization calibration and Kalman filtering are combined, the problems of space-time inconsistency and random errors of multi-source data are solved, and the precision of data fusion is improved.

A kind of temperature measurement and control device for detecting space charge in extreme temperature environment pilot sample, comprising: original voltage signal measurement loop and sample temperature detection control loop characterized by space charge.This application only uses the original voltage signal characterized by space charge obtained by space charge-acoustic wave-voltage transformation under the excitation of polarization electric field and electric pulse superposition, based on the time delay of peak value in original voltage signal caused by the change of propagation speed of corresponding acoustic wave in different temperature ground electrode after the interface charge of sample / ground electrode, directly determines the actual temperature of sample, so as to realize the direct and accurate measurement of sample temperature without setting temperature sensor of electric signal and optical signal, finally, according to the comparison between actual temperature and set temperature, control the output of cold and hot output source, realize the accurate temperature control of sample.

The invention relates to the technical field of high voltage and insulation, and discloses an oil flow charged space charge test system and method.The method comprises the steps that firstly, to-be-tested insulating oil is injected into a closed circulation oil way, the oil flow speed and the oil temperature are adjusted to set values through a flow speed controller and a temperature controller, and stable operation is conducted till the oil flow state is uniform; time sequence parameters are set through a time sequence controller, a high-voltage pulse generator is triggered to apply high-voltage pulses with set amplitude and pulse width to the pipeline wall, and an external electric field under the actual working condition is simulated; the pulse laser is triggered, laser is focused into linear light spots through the beam shaping unit, and the linear light spots penetrate through the double-layer optical window to irradiate flowing oil flow and excite pressure waves; the piezoelectric sensor array acquires pressure wave signals and transmits the pressure wave signals to the high-speed acquisition card; and the data processing unit performs deconvolution, acoustic wave equation solving and inversion processing on the acquired signals through a charge reconstruction algorithm to eliminate the influence of a sensor response function. The problem that a traditional method cannot adapt to the dynamic oil flow test is solved.

The application belongs to the technical field of oil detection, and particularly relates to a spinning oil online detection system based on edge computing, which comprises the following steps: obtaining spinning oil frequency shift and energy loss data, fitting to obtain oil film adsorption capacity, viscoelasticity and shear loss modulus, combining microfluidic pressure signal to calculate fluid shear force, constructing a friction energy loss database and normalizing to form a feature vector, fusing with dielectric constant and ion mobility data, extracting interface conductance and molecular motion parameters, establishing a lubrication and charge conduction coupling model, converting the model into a spatial charge density matrix, matching the matrix with time domain data of the yarn tension transient state, calculating a correlation coefficient and generating an antistatic and smoothness coupling evaluation index, fitting a prediction model through multi-temperature and humidity, and outputting a quantitative conclusion to guide the formula and process. Through multi-sensing fusion and edge computing, the application realizes full-dimensional detection and optimization of oil performance, and improves detection precision and production efficiency.

1. The name of the design product: universal gas spacer. 2. The use of the design product: the need for spacing charges between blasting holes in blasting engineering. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The application discloses a humidity sensor and a preparation method thereof. The humidity sensor comprises an insulating substrate, an electrode layer arranged on the insulating substrate, a two-dimensional transition metal sulfide layer and a two-dimensional transition metal oxide layer. The two-dimensional transition metal oxide layer is combined on the two-dimensional transition metal sulfide layer, and the two form a composite structure. The two-dimensional transition metal oxide layer and the two-dimensional transition metal sulfide layer have a Fermi energy level difference capable of causing charge transfer, thereby forming a space charge region and a potential barrier at the interface of the composite structure. The humidity sensor has high sensitivity, stability and corrosion resistance, and the working temperature and humidity range are also improved.

The application discloses a kind of cable branch box electromechanical collaborative test method, its steps are: using random mechanical excitation force in external environment as passive test source, three-dimensional acceleration mechanical vibration wave and metal shielding ground line wideband weak current of box shell are synchronously collected, and double-mode time sequence is generated;Based on coherent integration algorithm, filter out power frequency induction component, extract induced displacement current and calculate electromechanical conversion coupling coefficient matrix;Using Fourier transform fitting dielectric relaxation response rate, output frequency-dependent dielectric relaxation characteristic vector;Response rate is mapped to different physical depth of insulating layer by combining radial propagation sound path difference model, and radial space charge concentration gradient parameter is output;Based on Poisson equation, reconstruct micro electric field stress distortion curve by reverse integration;Extract maximum stress peak value and compare with dendritic breakdown threshold value, and automatically output adaptive adjustment instruction.The application does not need to apply electrical excitation additionally, and can passively perceive internal space charge distribution and electric field stress distortion of insulating medium.

An integrated multi-pole collision reaction cell for inductively coupled plasma mass spectrometry, the integrated collision reaction cell comprising two sets of ion guides, the first set to deflect ions 90 DEG and focus at an inlet of the collision reaction cell; the second group is a collision reaction multi-pole rod ion guider; and the two groups of ion guiders are arranged at an angle of 90 degrees and are separated by a round hole. Ions enter the group of ion guiders from an inlet lens at the front end of the first group of ion guiders, deflect by 90 degrees under the action of an electrostatic field of the group of ion guiders, are simultaneously focused to an inlet of the collision reaction tank, and are guided out from a small hole in the middle of an outlet lens after being collided or reacted. The outlet of the deflection lens and the inlet of the collision reaction tank are combined, and the ion beam is directly focused to the inlet of the collision reaction tank after deflection, so that the ion flight distance can be shortened, the space charge effect can be reduced, and the automatic tuning process can be simplified.

The present application belongs to the field of electrical insulation material monitoring, and particularly relates to a DC electric field space charge evaluation scheme for insulation materials. The method can evaluate the space charge accumulation condition of insulation materials in operation without directly measuring the space charge, by measuring and recording the current and its curve between the two ends of the materials, and can evaluate the insulation condition of the insulation materials. Compared with the existing space charge measuring device, the present application has the advantages of low cost and simple equipment, and can overcome the shortcomings of the current space charge measuring device that cannot evaluate the space charge accumulation condition of insulation materials in operation.

This invention provides an organic electroluminescent device with efficient hole injection. Compared to traditional hole injection layers, the hole injection layer used in this invention includes an anode modification layer and an organic interface layer. The anode modification layer comprises a rhenium-based oxide. The anode modification layer / organic interface layer significantly improves the ability of holes to be injected from the anode to the hole transport layer (hole injection efficiency), improving the device stability problem caused by carrier imbalance. Furthermore, when the hole injection layer used in this invention is connected to a hole transport layer of suitable thickness, an ohmic contact can be formed, significantly reducing the injection energy barrier (making the hole injection barrier approximately zero), forming a space charge confinement current, further increasing device stability, which is of great significance for improving the performance of organic electroluminescent devices. The rhenium-based oxide used in this application has a moderate melting point, its preparation process is simpler, consumes less energy, and is non-toxic, making it a suitable anode modification material with good application prospects.

The present disclosure relates to a method of manufacturing an electronic device including a silicon-doped electrical contact element. A method of manufacturing an electronic device includes the steps of: a) forming a first doped region of a first type and a second doped region of a second type in a semiconductor substrate; b) depositing a dielectric layer on the upper surface of the substrate; c) after step b), forming a first opening and a second opening in the dielectric layer to expose the first region and the second region; d) implanting non-doped ions in the second region to amorphize an upper portion of the second region; e) after steps c) and d), filling the first opening and the second opening with doped monocrystalline silicon or polycrystalline silicon of the first type; and f) performing a thermal annealing of the apparatus to recrystallize the upper portion of the second region and create lattice defects in the space charge region of the p-n junction formed at the interface between the via and the second region.

The application provides a photoinitiator with space charge transfer properties under low-power light irradiation, a preparation method and application thereof, and relates to the field of photoinitiators. The photoinitiator is composed of different electron donors and acceptors connected by a spirofluorene bridge. The excited state species formed by space charge transfer under low-power light excitation has the properties of long lifetime and strong excited state reduction ability. By regulating different electron donors and acceptors, charge transfer triplet and local triplet species are generated. Both kinds of excited state species can efficiently initiate polymerization of acrylate monomers under UV visible light irradiation in different systems. Moreover, the photopolymerization system can be well matched with photoresist after adding a film-forming resin, and a clear 10 μm line width photoresist pattern can be etched under 16 mW cm ‑2 A clear 10 μm line width photoresist pattern is etched under light irradiation.

The application discloses an oil-paper insulation space charge and partial discharge synchronous measurement system and method, relates to the field of high-voltage power transmission and transformation equipment, and aims to solve the problem that the existing oil-paper insulation space charge distribution and partial discharge cannot be synchronously measured and the problem of establishing the relationship between the two. Specifically, the synchronous measurement system comprises a charge test unit, a trigger time control loop, a partial discharge test protection loop and a pulse voltage isolation coupling loop, the synchronous measurement method collects multi-source information, establishes the distribution of the insulation paper trap energy level, and establishes the relationship between the trap energy level distribution and the partial discharge. The synchronous measurement of the oil-paper insulation space charge distribution and the partial discharge is realized through the above method, and the relationship between the two is established.

A device and method for controlling the thickness of air gap defects for space charge measurement includes an aluminum electrode, a piezoelectric sensor below the aluminum electrode, a test sample lower piece above the aluminum electrode, a rigid partition suspended above the aluminum electrode and the test sample lower piece, the rigid partition having a through test hole and covered by an upper test sample; above the upper test sample, a horizontal bar with adjustable height driven by a vertical measuring instrument is arranged, a micrometer is arranged on the horizontal bar, a high-voltage electrode is arranged below the micrometer, the high-voltage electrode is connected to a high-voltage power supply, and the high-voltage electrode is aligned with the test hole of the rigid partition. The air gap defect thickness control device provided by this invention can achieve micron-level quantitative control of the air gap, effectively evaluating the influence of tiny air gap thickness on space charge distribution.

The application provides a high-resolution space charge in-situ tester under X-ray irradiation, comprising an X-ray source, a pulse power supply, a direct current power supply and a space charge testing device; wherein the space charge testing device comprises a first electrode unit and a second electrode unit oppositely arranged along a first direction, and has a gap for accommodating a sample to be tested between the first electrode unit and the second electrode unit; the first electrode unit is provided with an avoiding hole penetrating through along the first direction, the avoiding hole is communicated with the gap, the X-ray source is arranged on a side of the avoiding hole away from the second electrode unit, and X-rays emitted by the X-ray source can enter the gap through the avoiding hole; the pulse power supply and the direct current power supply are connected to the first electrode unit, and are used for applying a first electric signal to the sample to be tested and generating an acoustic signal on the sample to be tested; an acoustic signal pickup module is arranged in the second electrode unit, and is used for picking up the acoustic signal and converting the acoustic signal into a second electric signal.

The invention discloses a method for simulating suspension potentials of double-circuit ground wires on the same tower of a direct-current line, relates to the technical field of simulation of high-voltage transmission lines, and is a computer simulation method. According to the method, by establishing a coupling model fusing an ion flow field and an equivalent circuit, suspension potential characteristics, including space charge influence, ground wire suspension potential distribution and a transient discharge process, in a'one-time operation and one-time ice melting 'mode are accurately simulated. The method comprises the steps that a line parameterization model is constructed, an ion flow field and equivalent circuit coupling model is established, steady-state suspension potential is solved through an up-flow finite element method and an iterative algorithm, the disconnecting link operation process is simulated and analyzed through a transient circuit, and a grounding resistance optimization suppression strategy is introduced. According to the method, the suspension potential amplitude and transient current characteristics can be efficiently calculated, theoretical support is provided for design and operation specification formulation of a direct-current ice melting device and ice melting loop switch equipment, the ice melting safety and reliability of a power transmission line are improved, and the method belongs to the computer application technology.