38 results about "Arc model" patented technology

The invention discloses a modeling method and system for a vehicle network field circuit coupling model under a contact line short-circuit working condition, and relates to the technical field of modeling, and the method comprises the following steps: constructing a short-circuit arc equivalent model under the contact line short-circuit working condition based on an isolation switch equivalent model, one end of the short-circuit arc equivalent model is connected with a contact line in sliding connection with a pantograph in the chain type lumped tau-shaped network model through a switch element, the other end of the short-circuit arc equivalent model is connected with a steel rail in the chain type lumped tau-shaped network model, and a vehicle network circuit model under the contact line short-circuit working condition is obtained; and taking the short-circuit arc current at any short-circuit phase obtained through simulation of the vehicle network circuit model as a current excitation source of the three-dimensional model, and obtaining a vehicle network field model under the contact line short-circuit working condition. The rise rate, peak value and attenuation process of the short-circuit current can be accurately simulated by adding the short-circuit arc, the arc voltage drop is reflected, and the authenticity and practicability of simulation are remarkably improved.

The invention relates to a high-voltage SF6 circuit breaker asymmetric short-circuit current breaking result prediction method, equipment and a medium. The method comprises the following steps: acquiring a plurality of groups of arc voltage and arc current test data obtained by performing a T100a test on a target circuit breaker under a first time constant; based on the test data, establishing a black box arc model, and fitting to obtain arc dissipation power and arc time constant corresponding to each group of test data through numerical solution and parameter optimization algorithms, thereby obtaining an on-off critical value; fitting is carried out in an arc breaking critical parameter fitting model, and values of a first parameter, a second parameter, a third parameter and a fourth parameter are determined; and obtaining a predicted value of an on-off value under the working condition through an arc on-off critical parameter fitting model, if the predicted value is greater than an on-off critical value, determining that on-off is successful, otherwise, determining that on-off is failed. Compared with the prior art, the method has the advantages of high accuracy, high practicability, simple process and the like.

The application discloses a high-speed railway pantograph-catenary arc electromagnetic radiation interference modeling analysis method, constructs a pantograph-catenary arc-pantograph power supply system integrated model containing a traction substation model, a traction network model, a train traction transmission system model, a train-track return current grounding system model and a pantograph-catenary arc model; under a pantograph-off arc transient condition, arc current is obtained through simulation calculation; and based on the arc current, a relationship between arc radiation power and spatial equivalent electric field intensity is established to represent the influence of time-varying characteristics of traction network electrical parameters on pantograph-catenary arc electromagnetic radiation interference. Under the pantograph-off arc transient condition, the real-time changes of impedance and capacitive reactance parameters of the traction network are involved in the unified solution of arc current formation, radiation power evolution and spatial electric field intensity calculation, and meanwhile, key coupling factors of the train high-voltage system and the train-track grounding system are mainly considered, so that the accuracy and engineering applicability of pantograph-catenary arc electromagnetic radiation interference analysis are improved.

The invention discloses a molded case circuit breaker on-off process dynamic simulation method based on a heterogeneous simulation system, and relates to the technical field of low-voltage electric appliance design and simulation. Loop current calculated by the first simulation subsystem is transmitted to the second simulation subsystem in real time and used for calculating electromagnetic force for driving a mechanism to move, and contact displacement generated by mechanism movement is immediately fed back to the first subsystem and used for dynamically updating resistance characteristics of an arc model, so that calculation of arc voltage is affected, and the simulation effect is achieved. The arc voltage is directly fed back to the circuit model to determine the current value at the next moment, so that a simulation chain for complete dynamic interaction of the circuit current, the electromagnetic force, the mechanical displacement, the arc resistance, the arc voltage and the circuit current is formed; therefore, the simulation model can reflect the dynamic evolution process of each physical quantity in the real on-off process in a self-consistent manner.

The application discloses a multi-feature fusion-based arc model discrimination method and device and a medium, relates to the field of fault arc detection, and aims to solve the problem of misjudgment in arc discrimination. The parameter region is based on an arc current signal, and dimensioned features and dimensionless features at different frequencies are extracted. The dimensioned features and the dimensionless features at different frequencies are respectively input into a convolutional neural network for training after feature fusion. The dimensioned features and the dimensionless features after fusion are input into the convolutional neural network for training after feature fusion, and a fusion result is obtained to determine whether an arc exists. The high-frequency features (dimensionless features and dimensioned features) at different frequencies are combined, feature fusion is performed in the convolutional neural network layer training process, different feature characteristics are analyzed and obtained from different angles, the diversity and comprehensiveness of the features are reasonably improved, the influence of low-frequency interference in the environment on discrimination is greatly reduced, and the misjudgment rate can be obviously improved.

The application discloses a method, device, equipment and medium for determining an anode sheath length of an arc model. The method comprises the following steps: in the first step, a first arc root radius is determined according to a current density output by a first arc generation model; in the second step, a second arc root radius is determined according to the first arc root radius and a second arc generation model, wherein an input parameter of the second arc generation model comprises a first anode sheath length; and in the third step, the anode sheath length is determined according to the first arc root radius and the second arc root radius. By determining the anode sheath length, the application is beneficial to solving the problem of slow solving speed and non-convergence of arc model simulation calculation, thereby being beneficial to establishing a more accurate arc simulation model.

The invention relates to the technical field of carbon brush grinding, and discloses a carbon brush precision grinding device which comprises a swing grinding mechanism, a guide dust collection mechanism is arranged at the bottom of the swing grinding mechanism, an X-axis adjusting mechanism is movably arranged on the surface of the guide dust collection mechanism, and a Y-axis adjusting mechanism is arranged at the top of the X-axis adjusting mechanism. And a carbon brush clamping mechanism is arranged at the top of the Y-axis adjusting mechanism. According to the precise grinding device for the carbon brush, through the arrangement of the swing grinding mechanism, the guide dust collection mechanism, the X-axis adjusting mechanism, the Y-axis adjusting mechanism and the carbon brush clamping mechanism, a needed arc model can be simulated through the swing grinding mechanism in the using process, and the precise grinding device is suitable for sliding rings and carbon brushes of different sizes through adjustment of the swing grinding mechanism; compared with a traditional device, the size is reduced, and the grinding efficiency is improved.

The invention relates to the technical field of contact simulation, and provides a contact surface erosion simulation analysis method based on a three-dimensional electric arc, which comprises the following steps: modeling according to the shape of a contact and a modeling area to obtain a three-dimensional electric arc model, determining an electric arc function and a contact movement function in the three-dimensional electric arc model, and performing multi-physical field coupling to obtain a contact surface erosion simulation result. Setting material parameters in the modeling area to obtain a target three-dimensional electric arc model; resolving the target three-dimensional arc model through a solver according to the arc function and the contact movement function to obtain arc change parameters; establishing a three-dimensional contact model, performing parameter configuration and ablation model function setting on the three-dimensional contact model, and performing physical field configuration according to the arc change parameters to obtain a target three-dimensional contact model; and performing solver configuration on the target three-dimensional contact model to obtain contact surface topography parameters, and performing erosion analysis through the contact surface topography parameters. According to the invention, contact erosion caused by the electric arc can be accurately simulated.

The application establishes a short-circuit arc to a potential arc evolution process space-time evolution model, specifically including a short-circuit arc internal space electric field model and a potential arc evolution model with randomness. A large number of ions and electrons exist in the short-circuit arc channel, and the internal electric field of the short-circuit arc model cannot be directly calculated. The application establishes a short-circuit arc internal space electric field model based on a particle swarm algorithm and a simulation charge method to further obtain the short-circuit arc internal space electric field strength. Based on the above short-circuit arc internal electric field model, the short-circuit arc internal space electric field is used as an independent variable of the potential arc development to establish a short-circuit arc to a potential arc evolution model with randomness, and the space form of the potential arc at the evolution time is obtained. The application combines the physical characteristics of the short-circuit arc to the potential arc evolution, realizes the short-circuit arc to the potential arc evolution model based on the existing optimization algorithm, and provides technical support for the potential arc suppression in engineering.

The invention relates to a modeling method for a ground fault simulation model of a ship medium-voltage DC system, and the method comprises the steps: building a simulation model of the ship medium-voltage DC system through simulation software, simplifying a generator set, and focusing on the change characteristics of voltage and current on a line in the system; establishing an arc model suitable for the ship medium-voltage direct current system, and analyzing the operation state and voltage and current characteristics of the system when an arcing fault occurs in the system through the arc model; for three different grounding fault types, namely a metallic grounding short-circuit fault, an arcing grounding fault and a high-resistance grounding fault, simulation analysis is carried out respectively, and fault features are extracted. According to the invention, the current characteristics of the medium-voltage DC system when three grounding faults with different resistance values occur are simulated, and a new method is provided for subsequent research.

The invention discloses a broadband conducted electromagnetic interference modeling method for very fast transient overcurrent on a secondary side of an electronic transformer, and belongs to the technical field of electromagnetic compatibility test simulation, and the method comprises the following steps: constructing a multi-arcing model of a GIS isolation switch, which is used for simulating and generating very fast transient overcurrent VFTC; the multi-arcing model is constructed by introducing fracture dynamic capacitance, establishing a segmented arc resistance model and setting arcing and quenching criteria; according to the method, fracture dynamic capacitance is introduced at the fracture of the disconnecting switch, segmented arc resistance models of three stages of pre-breakdown, steady-state combustion and arc quenching are fused, and meanwhile, accurate arcing and arc quenching criteria based on dynamic breakdown voltage and current zero-cross detection are set; the constructed multi-arcing model can highly vividly reproduce the VFTC waveform generated during the operation of the GIS disconnecting switch.

The application relates to a method and device for establishing a single-phase grounding fault arc model. The method comprises: collecting arc data and load data in an arc stage; and establishing an arc model according to the arc data and the load data, which comprises: obtaining an arc starting resistance according to arc current, arc voltage, load current and load voltage in an arc starting stage; obtaining an arc burning resistance according to arc current, arc voltage, load current and load voltage in a steady-state arc burning stage; and obtaining an arc extinguishing resistance according to arc current, arc voltage, load current and load voltage in an arc extinguishing stage. The application establishes the arc model in three stages, i.e., the arc starting stage, the steady-state arc burning stage and the arc extinguishing stage, so that the arc model in each stage is more in line with the arc characteristics of the respective stage, thereby better simulating an actual single-phase grounding fault arc.

The application discloses a pantograph-catenary arc electrical characteristic and transient overvoltage analysis method considering the influence of time-varying parameters, in which, in the transient analysis of pantograph-catenary off-line arc, time-varying impedance and capacitive impedance parameters of a traction network are introduced into the pantograph-catenary arc electrical characteristic formation process for the first time, and an improved arc model considering the influence of train speed and a fine train-track grounding system model are combined to realize the unified analysis of the overvoltage of a train roof and a train body, avoid the overvoltage evaluation deviation caused by the static traction network parameters and the simplified grounding model, and improve the accuracy and engineering applicability of the pantograph-catenary off-line arc transient overvoltage analysis.

1. Name of the product in this design: Baking Display All-in-One Machine (Arc Model). 2. Purpose of this design: For food sales and display. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The application discloses a dynamic simulation method for breaking process of a molded case circuit breaker based on a heterogeneous simulation system, and relates to the technical field of low-voltage electrical appliance design and simulation. The application constructs a high-efficiency heterogeneous simulation system which is accurately dispatched by a cooperative simulation control module, and the loop current calculated by a first simulation subsystem is transmitted to a second simulation subsystem in real time, which is used to calculate the electromagnetic force driving the mechanism to move, and the contact displacement generated by the mechanism movement is fed back to the first subsystem immediately, which is used to dynamically update the resistance characteristic of the arc model, thereby affecting the calculation of the arc voltage, and the arc voltage is directly fed back to the circuit model, which determines the current value at the next moment, forming a complete dynamic interaction simulation chain from the circuit current, the electromagnetic force, the mechanical displacement, the arc resistance, the arc voltage and the circuit current, so that the simulation model can self-consistently reflect the dynamic evolution process of each physical quantity in the real breaking process.

The invention provides a contact line ablation area determination method and device based on a dynamic offline behavior, and relates to the technical field of pantograph-catenary system simulation. According to the method, a pantograph-catenary transient arcing model is established, and an overall motion equation of a pantograph-catenary system is constructed; the method comprises the following steps: establishing an overall motion equation, determining a longitudinal distance between a pantograph and a contact line under the dynamic offline behavior of the pantograph-catenary system based on the overall motion equation, establishing a contact line ablation model under the transient arcing action of the pantograph-catenary system, and carrying out analogue simulation on the pantograph-catenary system based on the transient arcing model of the pantograph-catenary system, the longitudinal distance between the pantograph and the contact line and the contact line ablation model. When the pantograph-catenary system is simulated, the longitudinal distance between a pantograph and a contact line is applied to a pantograph slide plate, the contact line ablation model is applied to the lower surface of the contact line as a boundary condition, the pantograph-catenary transient arcing model acts in an air domain, and the contact line ablation area is obtained. The cumulative effect of transient arcing can be accurately reflected, and the accuracy of the ablation area of the contact line is improved.

The application discloses a kind of based on deep learning's fault arc accurate detection method and system, belong to low-voltage distribution safety and electrical fire early warning technical field.The present application is aimed at the problem that fault arc is prone to occur, difficult to detect in low-voltage distribution system, and the high false detection and missed detection rate of traditional method, a high-precision, fast detection scheme of fusion current time-frequency domain feature and deep learning model is proposed.The present application quickly locates current disturbance by improving CUSUM algorithm, greatly reduces the amount of calculation;Automatic extraction current time-frequency domain joint feature, input Stacking double-layer integrated deep learning model to realize high-precision fault classification;Combined with double exponential arc model to expand samples, improve generalization ability.The detection accuracy of the present application reaches 99.06%, and the detection time is only 10% of the traditional method, can effectively identify series, parallel, ground fault arc, adapt to residential, commercial, industrial and other complex multi-load scenarios, and support multi-branch line fault positioning, with high precision, low delay, strong robustness, easy deployment and other advantages, can be widely used in arc fault circuit interrupter, electrical fire monitoring system, to prevent electrical fire from the source.

The invention belongs to the technical field of artificial intelligence, and provides an arc model parameter optimization method based on an improved Asian wolf optimization algorithm, and the method comprises the steps: collecting an arc current signal based on a current sensor, and extracting the spectrum capability waveform of the arc current signal; establishing a direct-current arc noise model according to the arc current signal spectrum capability waveform; constructing an objective function based on the root-mean-square error, and determining a to-be-optimized parameter; and executing the improved Asian wolf optimization algorithm, and optimizing the to-be-optimized parameters. According to the method, the Asian wolf optimization algorithm is introduced through the chaos self-scaling learning mechanism, adaptive interaction of population individual position information is achieved through the chaos self-scaling learning mechanism, the optimization algorithm can be effectively prevented from being caught in premature convergence, the convergence speed is increased, and the method has high recognition precision for parameters of the direct-current arc noise model.

The application relates to the technical field of high-voltage power transmission and distribution, and provides a Mayr arc model construction method and system based on a dynamic arc radius and a random length, which comprises the following steps: generating a multi-dimensional random state vector representing micro-instability in the arc; calculating a random effective arc length and a dynamic arc radius according to the multi-dimensional random state vector, an instantaneous arc current and a mechanical contact spacing; calculating a dynamic time constant, a heat dissipation power and an arc voltage correction amount based on the random effective arc length and the dynamic arc radius, and solving an improved Mayr differential equation to update an arc conductance; feeding back and modulating evolution parameters of the multi-dimensional random state vector according to a power imbalance degree calculated by the arc conductance, and adjusting secondary empirical coefficients in the dynamic arc radius and the dynamic time constant; and generating the Mayr arc model after complete time domain iteration. The method generates a high-fidelity Mayr model which can reflect arc physical randomness and is suitable for probabilistic evaluation.

The method for identifying fault arc based on model parameter correlation degree comprises the following steps: detecting current information of the fault arc and inputting to an arc feature identification module; the arc feature identification module identifies valid information and inputs to a fault arc parameter reconstruction module, which reconstructs parameters based on an adaptive fault arc model; the obtained reconstructed parameter set is input to a parameter correlation degree processing module for parameter correlation degree processing; the obtained reconstructed parameters and obtained correlation degree information are compared with an arc feature library caused by a fault type set in a power fault type processing module; and the power fault caused by the fault arc is classified according to the comparison result. The method classifies the electrical fault type according to the difference of the fault arc feature and the correlation degree relationship of the reconstructed model parameters, and takes appropriate measures based on the fault type category to improve the operation and management level of the distribution network.

The application relates to a transformer continuous winding parameterized modeling method and device, computer equipment, a storage medium and a program product. The method comprises the following steps: acquiring at least one double-line pie model, the double-line pie model acquisition step comprising the following steps: reading parameter data of a continuous winding and initializing the parameter data, constructing a positive pie model and a reverse pie model based on pie internal wire turn connection schemes and wire turn start and end coordinates determined according to the parameter data; correcting model coordinates according to the parameter data and confirming an inter-pie arc connection scheme; acquiring a first wire turn arc model to connect two models based on the corrected coordinates and the arc connection scheme, and obtaining a double-line pie model; acquiring at least one second wire turn arc model to connect at least one double-line pie model, and acquiring a single-coil model; and repeatedly executing the above steps to obtain at least one single-coil model, which is used to construct a transformer continuous winding model. The method can be used for parameterized modeling of a transformer continuous winding.

The application provides a method and device for establishing an improved impedance arc model, equipment and a medium thereof, including establishing an arc model equivalent circuit on the basis of a Cassie model; under a power frequency condition of the equivalent circuit, the equivalent circuit is expressed as an impedance function with a 10 ms period, an equivalent time-varying conductance when the arc is stably burning, and an equivalent time-varying impedance containing LC and RC oscillation when the arc is extinguished and reignited; the arc resistance dynamic expression is obtained by differentiating the Cassie model equation; when the arc current is close to the natural zero, the initial value of the arc conductance is obtained according to the dynamic expression and the instantaneous current is ignored; when the arc is stably burning, the arc resistance is equivalent to a time-varying conductance, and the maximum conductance value of the arc is obtained according to the total impedance of the load; the arc impedance Z_a expression is obtained according to the initial conductance value and the maximum conductance value, and the improved impedance arc model is generated. The traditional Cassie and Mayr models do not consider the near-pole effect, corona discharge and other phenomena, and the arc is equivalent to a single time-varying resistance, so that the fault arc cannot be accurately described in the actual situation.

The present application relates to photovoltaic power generation system fault detection and simulation technical field, and disclose a kind of based on frost ice algorithm optimization's photovoltaic direct current fault arc simulation system, the system includes arc model construction module, pink noise correction module, frost ice algorithm optimization module and fusion module.The present application simulates the high-frequency characteristic of fault arc by introducing pink noise model, reconstructs the power density function of heuristic arc simulation model, while using frost ice algorithm to make the least square difference between measured arc voltage and simulation voltage as fitness function, iteratively optimizes the key parameters of heuristic arc simulation model, obtains improved arc simulation model, couples the optimized improved arc simulation model and photovoltaic off-grid energy storage system model to obtain complete fault arc simulation system, realizes the accurate simulation and analysis of direct current fault arc under multiple operating conditions, and provides reliable simulation support for photovoltaic direct current fault arc detection.

This invention relates to the field of circular arc gear design methods, and particularly to a method and system for designing half-tooth and full-tooth profiles based on LM iteration, and related to gears. The half-tooth profile comprises three sequentially connected curves: the addendum arc, the involute, and the root arc. This invention provides the equations for these three curves, extracts points B and C as the desired endpoints of the involute, and uses the LM iteration algorithm to solve for the starting and ending angles of γ. Several values ​​are sequentially taken from each of the three curves and substituted into the corresponding addendum arc model, involute model, and root arc model to obtain the coordinates of several points. New curves are then established using these coordinates and concatenated as spline curves to form a smooth, high-precision half-tooth profile. This solves the technical problem of low accuracy in existing half-tooth profile design methods during the transition between the circular arc and the involute, resulting in unsmooth curves.

A method for modeling a disconnecting switch operation overvoltage arc simulation model comprises the steps that an arc is equivalent to high-temperature plasma, an energy balance equation is established, and the power-law relation between an arc time constant and a voltage constant about temperature is updated in real time; establishing an isolating switch gap cylinder three-dimensional arc model, extracting an arc center temperature T (t), and fitting in MATLAB (Matrix Laboratory); and introducing the updated arc time constant and voltage constant into an arc resistance calculation module of the MODELS element. A time-varying resistance model, a segmented arc model, a Mayr-Cassie combination model and the model established by the invention are respectively adopted for comparison simulation, and a VFTO amplitude and a wavefront rise time error are extracted. Based on the model provided by the invention, the amplitude relative error of the VFTO simulation result is less than or equal to 2.1%, and the wavefront rise time relative error is less than or equal to 1.6%. The model is suitable for high-precision simulation under complex working conditions such as breaker on-off transient overvoltage VFTO research and electronic transformer electromagnetic anti-interference performance test.

The invention provides a circuit breaker opening loop simulation method and device, equipment and a storage medium. Relates to the technical field of power systems. The method comprises the following steps: acquiring a multi-dimensional electrical characteristic parameter set of a target direct current system; based on the multi-dimensional electrical characteristic parameter set, constructing a circuit model, an opening loop model, a repeat loop model, a relay arc model, a variable grounding resistance model and a long cable model corresponding to the target DC system; based on the topological structure of the target direct current system, integrating the parameterized circuit model, the opening loop model, the repeating loop model, the relay arc model, the variable grounding resistance model and the long cable model to obtain a circuit breaker opening loop model; and simulating single-point grounding faults under different working conditions based on the circuit breaker opening loop model to obtain single-point grounding fault response characteristics corresponding to the different working conditions. According to the invention, the problem that the response characteristics of the opening loop cannot be accurately evaluated in the prior art is solved.

This invention discloses a method for assessing the severity of transmission line resonance based on a harmonic circular arc model, relating to the field of power system technology. The method includes the following steps: single-end harmonic data acquisition, construction of a harmonic circular arc model, calculation of three major assessment indicators, risk level classification of the indicators, resonance severity rating, and resonance point location. This invention only requires single-end harmonic measurement to construct full-line harmonic constraints, eliminating the need for multi-point monitoring and complex impedance modeling, significantly reducing costs and enhancing engineering operability. The design of three major assessment indicators enables multi-dimensional quantification of resonance state, aligning with national and enterprise standards, and solving the problem of traditional methods' difficulty in accurately quantifying resonance severity. A risk matrix is ​​used to classify seven risk levels and accurately locate resonance points, overcoming the limitations of traditional methods that cannot locate them. The method integrates assessment, identification, and location, significantly improving the efficiency and accuracy of resonance assessment, and providing reliable technical support for line operation and maintenance and suppression measures.

The invention discloses a circuit breaker post-arc thermal interruption performance evaluation method, device, equipment and medium, and belongs to the technical field of breaking of high-voltage switch equipment, and the method comprises the steps: constructing a multi-physical field coupling arc model of a circuit breaker, carrying out the arc simulation, obtaining the arc current and arc voltage data before zero, and carrying out the evaluation of the post-arc thermal interruption performance of the circuit breaker; fitting by adopting a Mayr model to obtain an arc time constant theta and an arc energy dissipation coefficient Q before zero; the current values are used as parameters of a post-zero arc model, and post-arc current values under different recovery voltage rise rates are predicted to determine the critical recovery voltage rise rate; determining the actual recovery voltage rise rate of the two ends of the circuit breaker under the near-area fault condition; and comparing the actual recovery voltage rise rate with the critical recovery voltage rise rate, and evaluating the thermal interruption performance of the circuit breaker. According to the method, the breakdown risk of the breaking fault current of the circuit breaker can be evaluated, and a theoretical reference is provided for the breaking performance of a gas medium and the optimization design of the circuit breaker.

The application discloses an environmental protection mixed gas switch post-arc recovery performance evaluation method and system. The method comprises the following steps: detecting the arc voltage, arc current, gas pressure and temperature in the arc chamber generated in the breaking test, and calculating the arc conductance and its rate of change with time; substituting the arc voltage, arc current, arc conductance and its rate of change with time into an arc model to calculate the post-arc current after the arc current zero-crossing, and judging whether the post-arc thermal recovery performance meets the breaking requirement based on the post-arc current; if the breaking requirement is met, determining the net ionization coefficient of the environmental protection mixed gas based on the gas pressure and temperature in the arc chamber, and obtaining the critical discharge field strength based on the net ionization coefficient; applying the system operating voltage on the switch equipment, calculating the electric field distribution in the arc chamber, comparing the critical discharge field strength with the electric field distribution, and determining whether the post-arc electric recovery performance of the environmental protection mixed gas meets the breaking requirement.

The invention relates to the field of electric power grounding fault detection, in particular to an arc light high-resistance grounding fault modeling method, an arc light high-resistance grounding fault analysis method, an arc light high-resistance grounding fault system and a medium, and the method comprises the steps: determining a dynamic arc model based on the combination of a Mayr arc model and a Cassie arc model; determining a grounding medium nonlinear resistance model; and connecting the dynamic arc model and the grounding medium nonlinear resistance model in series to obtain an arc light high-resistance grounding fault model. On the basis of considering the nonlinearity of the arc, the nonlinearity of the grounding medium resistance is increased, the nonlinearity characteristic of the arc light high-resistance fault can be accurately simulated, the defect that the nonlinearity characteristic of the grounding medium is not fully considered by the existing arc model is avoided, and the air gap breakdown process between the wire and the grounding medium is taken into consideration. The method can be used as a universal arc fault model covering all working conditions, and the technical defect that an existing single arc model cannot cover all working conditions is overcome.