505 results about "Lightning strike" patented technology

The invention provides a line arrester operation monitoring method and device based on bimodal synchronous analysis, and the method is applied to an operation monitoring device comprising a lightning stroke recognition module, a signal collection module and an operation diagnosis module, and specifically comprises the steps: recognizing a lightning stroke event; bimodal current waveform signal acquisition for synchronously triggering an impact current signal and a power frequency follow current signal; dynamically associating the bimodal current waveform signal based on the time dimension and the amplitude dimension; and establishing a correlation diagnosis model, and outputting an abnormality diagnosis result according to the correlated bimodal current waveform signal. According to the method, the dual-mode current waveform is synchronously collected and the dual-mode current waveform signal is dynamically associated, so that the recovery state of the line arrester after action is comprehensively and accurately mastered, the abnormal state of the line arrester is more accurately identified, the identification accuracy of potential fault hidden dangers is improved, the occurrence probability of misjudgment and missed judgment is reduced, and the reliability of the line arrester is improved. And the effectiveness and reliability of line lightning arrester monitoring are ensured.

The invention discloses a power transmission line lightning stroke risk assessment system and method and a storage medium, and the method comprises the steps: dividing a mountain and a flat ground region around the mountain into a plurality of extraction sections, and dividing the boundary of a mesoscopic terrain according to the cloud-to-ground lightning density variation coefficient of the extraction sections and the average cloud-to-ground lightning density variation coefficient of the flat ground region, dividing the range from the boundary of the mesoscopic terrain to the peak of the mountain into mesoscale terrains; according to the space electric field of the meso-scale terrain, establishing a meso-terrain lightning downlink pilot fractal development model, and carrying out simulation calculation on the model to obtain meso-terrain ground thunderbolt distribution; the mesoscopic terrain ground thunderbolt distribution serves as the ground lightning density of each area of the complex terrain, the power transmission line lightning trip-out rate of each area of the complex terrain is calculated according to the ground lightning density and the thunder observation data, and the lightning risk of each area of the complex terrain is evaluated through the power transmission line lightning trip-out rate. According to the invention, power transmission line lightning stroke risk assessment in a complex terrain region is realized in a more refined manner.

A lightning shielding failure risk assessment method for a power transmission line based on three-dimensional laser point cloud data includes reclassifying three-dimensional laser point cloud data of a power transmission corridor; acquiring lightning activity parameters for the power transmission corridor; determining wire, ground wire, and ground point cloud striking distances; plotting three-dimensional wire, ground wire, and ground shielding arc surfaces in the preprocessed three-dimensional laser point coordinate system; performing orthogonal projection of the plotted three-dimensional shielding arc surfaces to obtain two-dimensional exposed arc surfaces and determining the areas of the two-dimensional exposed arc surfaces; and looping to calculate the areas of the exposed arc surfaces at different lightning incidence angles and different lightning current amplitudes; and determining a line trip rate based on the lightning strike density, the lightning incidence angle probability distribution function, and the lightning current probability distribution function.

The invention relates to the technical field of meteorological monitoring, in particular to a ring main unit lightning micrometeorological online monitoring system and method, and the system comprises a feature extraction module, a frequency spectrum detection module, a frequency band pool screening module, a path adjustment module and an interference avoidance module. The method comprises the following steps: collecting an electric field intensity extreme value sequence, calculating a change rate difference ratio, identifying thunder and lightning precursor characteristics, combining a frequency spectrum energy density map, analyzing an energy peak frequency band and a drop point of a frequency hopping signal, judging a thunder and lightning frequency signal concentration area, performing frequency spectrum interference filtering, and combining a dynamic time warping algorithm. The time deviation between a lightning stroke time point and frequency hopping scheduling is analyzed; a frequency hopping path is adjusted in real time; the response timeliness is improved; the difference value before and after electric field disturbance is monitored; and support is provided for monitoring stability and response adaptability of the thunder and lightning risk environment.

The invention discloses a self-sensing monitoring method, system and equipment based on a lightning arrester, and relates to the technical field of power equipment monitoring. The self-sensing monitoring method, system and equipment based on the lightning arrester comprises the following steps: S1, collecting lightning stroke data in real time through multi-sensing fusion, and performing data cleaning and standardization processing on the lightning stroke data; s2, adopting a three-mode sensing and three-source power supply cooperation mechanism to realize state-driven adaptive sensing and energy path switching; s3, automatically scheduling a communication path according to a communication type and link quality, dynamically analyzing and compensating transmitting power, and completing authentication encryption and multi-hop secure transmission; s4, lightning stroke characteristics are extracted, an equipment life prediction model is constructed, residual life prediction is realized, and equipment health grade division and operation strategy adjustment are carried out according to the residual life prediction model; and S5, calculating an electric leakage deviation value by reconstructing a current waveform, triggering graded early warning and linking a communication power and energy supply strategy. The problem that the operation of a power system is affected due to large leakage current monitoring errors is solved.

The invention provides a lightning protection intelligent monitoring method and system in a power distribution network, and the method comprises the steps: extracting the transient energy of a polarity current from the lightning stroke current of each lightning monitoring node, determining the cross-correlation between all transient energy, carrying out the state response evaluation of the lightning stroke current of the lightning monitoring node based on a fuzzy evaluation mechanism according to the cross-correlation, and obtaining the state response of the lightning stroke current of the lightning monitoring node. Obtaining the monitoring confidence of the thunder and lightning monitoring node; according to the historical lightning stroke current, determining a time sequence dependency relationship of the lightning stroke current between the adjacent lightning monitoring nodes, and determining a response characteristic of lightning stroke current attenuation between the adjacent lightning monitoring nodes through all the time sequence dependency relationships and the topological structure of the target power distribution network; and according to the monitoring confidence and all the response characteristics, confidence correction is carried out on the lightning stroke current of the lightning monitoring node, the corrected lightning stroke current is obtained, and then the lightning stroke occurrence position is positioned. By adopting the scheme of the invention, correlation confidence correction of lightning stroke current between monitoring nodes can be realized, so that the positioning precision of a lightning stroke occurrence position is improved.

The invention provides a blade lightning protection channel online test method and system based on a pulse current method, and belongs to the technical field of blade lightning protection detection.The method comprises the steps that a pulse waveform is generated through a pulse current generator to simulate lightning impulse, and the lightning impulse is injected into the surface of a lightning arrester of a blade lightning protection system; measuring channel currents at different positions of the surface of the lightning arrester in the length direction by using a distributed sensor; a high-voltage differential probe is used for collecting and measuring the waveform of an incident wave and the waveform of a reflected wave of an injection point; detecting blade surface potential distribution by using a capacitive coupling sensor; comparing the waveform of the incident wave, the waveform of the reflected wave and the theoretical waveform, determining a time domain reflection coefficient and a frequency domain impedance spectrum, and determining a fault type; after the fault type is determined, the fault point is positioned based on the channel current and the blade surface potential distribution, the lightning impulse is simulated through the pulse waveform, the lightning protection channel is further tested, shutdown is not needed, the testing efficiency of the blade lightning protection channel is effectively improved, and the power generation efficiency is ensured.

The invention discloses a thunder and lightning positioning method and system based on multi-source data fusion, and belongs to the technical field of thunder and lightning monitoring and positioning. The method comprises the following steps: in a preset time window, collecting first and second arrival time of a lightning event received by each ground lightning detection device, and calculating the arrival time difference; and extracting a lightning detection distance, a capture time difference and an observation included angle in combination with the lightning area image, obtaining an electric field change rate, a radar reflectivity and an equipment distance, substituting into a combined lightning positioning formula, and calculating a space distance between a lightning striking point and the first receiving equipment. Through the position information of the equipment, the geographical coordinate of the lightning striking point is calculated. According to the scheme, the spatial resolution and accuracy of lightning positioning can be effectively improved, positioning errors caused by a traditional radar or single-point monitoring method are reduced, simultaneous positioning of a plurality of lightning striking points is supported, and accurate data support and spatial decision basis are provided for subsequent lightning risk early warning, power equipment protection and disaster traceability.

The invention relates to the technical field of composite material lightning protection, in particular to a pyrolytic dynamics simulation analysis method for lightning stroke damage of a carbon fiber composite material. According to the technical scheme, the method comprises the following steps that a new model is established in ABAQUS / CAE, a carbon fiber composite material is established, a laminated plate laying layer is defined, a multi-physical field analysis step is set, load current density is applied to a lightning stroke action area, the pyrolysis behavior of the carbon fiber composite material under lightning stroke high Joule heat is simulated based on a pyrolysis kinetic model, and operation is established in a Job module. And parallel computing parameters are selected and submitted for solution, temperature field distribution is checked, and the current density diffusion trend is verified. Through the electric-thermal-structure coupling model, the conductivity gradient design and the lightning arc model, refined prediction of CFRP lightning stroke damage is achieved, the damage area is reduced, the lightning stroke process is accurately simulated, and the adaptation and protection effects on the lightning stroke environment are improved.

The invention discloses an overhead line-high voltage cable sheath lightning stroke induced voltage calculation method. At present, the voltage of a lightning stroke point, a connection point of an overhead line and a cable and a point in a well of each joint along a cable sheath cannot be obtained at the instantaneous moment of lightning stroke of the overhead line on site. According to the method, electromagnetic transient simulation modeling is carried out on actual spatial positions, structural parameters and material parameters of field overhead lines and high-voltage cables, electromagnetic transient simulation modeling is carried out on lightning currents, electromagnetic transient modeling is carried out on normal operation conditions and actual lightning stroke fault conditions of an electric power system, and after the randomness of the fault occurrence moment is considered, the electromagnetic transient simulation modeling is carried out on the actual lightning stroke fault conditions of the electric power system. And the maximum lightning stroke induced voltage value of each point along the cable sheath after lightning stroke is calculated through electromagnetic transient simulation software, so that a reference basis is provided for insulation matching design of the cable sheath of the overhead line-cable mixed line invaded by lightning current, and a foundation is laid for design evaluation of various subsequent voltage limiters and protectors.

The invention provides a lightning trajectory data fusion detection based single-tree accurate early warning system for lightning fire, and relates to the technical field of meteorological disaster monitoring and early warning and forest lightning fire prevention and control. The lightning trajectory data fusion detection based single-tree accurate early warning system comprises an electromagnetic radiation receiving module which adopts an antenna array composed of at least four directional antennas to receive electromagnetic radiation signals generated by lightning, the antenna array is connected with a signal conditioning circuit, and the signal conditioning circuit is connected with the electromagnetic radiation receiving module. The signal conditioning circuit amplifies the received weak electromagnetic signal by 100-1000 times, processes the weak electromagnetic signal with a filtering bandwidth of 10 kHz to 1 MHz, and transmits the weak electromagnetic signal to a data acquisition card with a sampling frequency of 5-20 MS / s and a sampling precision of 12-16 bits. By integrating lightning electromagnetic radiation continuous sampling, infrared, visible light and ultraviolet multispectral tracking shooting and atmospheric electric field early warning multi-modal data, a lightning track is accurately detected, and by combining forest environment information, accurate early warning of a single tree where a lightning fire may occur is achieved.

The invention discloses a lightning stroke attachment point calculation method of a complex surface flat plate structure, and aims to overcome the defects of an existing lightning stroke attachment point numerical calculation method, and on the basis that finite element software is utilized to construct a typical needle plate model based on an electric field model method, an electrode is moved downwards to simulate the thunder and lightning development process under first guidance. A pilot / corona onset criterion is established based on short-gap discharge and material corona discharge theories, a numerical simulation algorithm is provided for evaluating the lightning protection design of a complex surface flat plate structure, the determination accuracy of the attachment points of the flat plate structure with similar surface material conductivity, complex surface microstructure and no salient points is improved, the attachment point simulation algorithm is optimized, and the method is suitable for application and popularization. And tedious and high-cost test links are effectively avoided.

The invention provides a method and a system for predicting residual compression strength of a carbon fiber composite material after lightning stroke, and belongs to the technical field of electric digital data processing. According to the method, by considering the pyrolysis degree of the lightning stroke CFRP composite material, the non-linear mechanical property parameters related to the pyrolysis degree actually measured based on the test and the thermal and mechanical damage results predicted based on the electric-thermal-mechanical multi-physics field coupling model are calculated; an actually measured nonlinear mechanical property thermal damage factor and a mechanical damage factor caused by impact damage are introduced into a constitutive relation of the CFRP composite material, and a finite element simulation method capable of quantitatively predicting the residual compression strength after lightning stroke is established by virtue of finite element software ABAQUS; the problems that in the prior art, the influence mechanism of lightning stroke damage on the mechanical property of the CFRP composite material is not clear, and a simulation modeling method capable of being directly used for calculating and predicting the residual compression strength after lightning stroke is lacked are solved.

A system and method for detecting in real-time High-Risk-Lightning (HRL) strikes and sending out alerts to responsible personnel to allow for earlier responses to lightning caused fire ignitions, and powerline damages, to help maintain and / or reduce the chance of spread by the wildfire and reduce the amount of powerline downtime. The system and method allow for HRL events and fire ignitions / powerline damage points to be detected preferably within seconds. The system and method can use a network of detectors, data from environmental satellites and / or other environmental data sources, powerline data, and novel AI / algorithms for signal processing for relatively quickly locating fire ignition spots and powerline damage points. Thus, the system and method provide for actionable wildfire intelligence and powerline damage potential in real-time and for relatively quickly and accurately sending out alerts when an HRL event has been determined. Cameras and drones can be used to provide real-time visualization at the location of the HRL event to verify or monitor any fire ignition or smoldering at the area of the HRL event, and to check the potential damage that the HRL strike has caused to the powerline. In one embodiment, all of the main components for the detection system can be located together out in the field and preferably connected to a pole or other vertical or substantially vertically oriented object. The system can also include a concentric antenna configuration for the high frequency antenna and low frequency antenna. The HRL data, including location coordinates, can be used for other related third party uses, such as inputs for a fire spread modeling software to yield a more accurate fire spread model, as well as for producing fire related maps, such as Community Wildfire Protection Plan maps that are relied on by the public.

The invention provides a wind power blade deicing control system lightning protection circuit and a test method, the circuit comprises a temperature sensor, a lightning protection module, an optocoupler signal isolator, a PLC, a main CPU and a power supply assembly, the temperature sensor is arranged on a wind power blade, a first signal end, a second signal end and a shielding shell of the temperature sensor are connected with the lightning protection module, and the optocoupler signal isolator is connected with the PLC. The lightning protection module is connected with the optocoupler signal isolator, the optocoupler signal isolator is connected with the PLC, the PLC is connected with the main CPU, a power supply from a wind power host is connected with the power supply assembly, and the power supply assembly is connected with the PLC, the main CPU and the optocoupler signal isolator and is used for supplying power. According to the invention, the PLC, the switching power supply, the CAN bus and other modules in the control system can be protected from common ground, so that the lightning current cannot enter equipment to cause damage during lightning stroke, the lightning protection method in the control system is protected to be distributed according to the lightning protection level, and the position of a lightning triggering point during lightning stroke of the wind power blade deicing control system is protected.

The present application provides a regional lightning protection method, device, equipment and readable storage medium. The present application can determine the geographical environment parameters and geometric shape parameters of the target protection area; and further determine the regional area of ​​the target protection area based on the geographical environment parameters and geometric shape parameters of the target protection area; and can also determine the lightning strike path of the target protection area; so that the protection range of the target protection area can be determined based on the lightning strike path of the target protection area and the regional area of ​​the target protection area; after determining the protection range of the target protection area, a plurality of target lightning protection devices can be further installed within the protection range of the target protection area to protect the target protection area from lightning strikes.

The present invention relates to the field of remote monitoring technology for lightning arresters, and is a remote diagnosis method and system for zero-impedance lightning arrester faults. The specific method includes: performing the first round of operation stability diagnosis of the zero-impedance lightning arrester; evaluating and calculating the lightning strike withstand capacity value of the zero-impedance lightning arrester; further screening the zero-impedance lightning arrester and executing the corresponding circuit protection strategy; calculating the environmental interference coefficient and the electrical interference coefficient; constructing a real-time interference coupling model when the zero-impedance lightning arrester is working; performing the second fault diagnosis of the zero-impedance lightning arrester according to the interference coupling factor time series set, and synchronously outputting the diagnosis result and the maintenance suggestion of the zero-impedance lightning arrester. The present invention solves the problem in the prior art that the online remote monitoring of the zero-impedance lightning arrester is affected by the environmental and electrical interference factors compared to the offline detection, resulting in a high false alarm rate of the monitoring data.

The invention relates to an external multi-gap lightning arrester volt-second characteristic curve estimation method and device and a medium, and the method comprises the steps: selecting at least two different standard lightning pulses to carry out the lightning stroke test of an external multi-gap lightning arrester test system, and obtaining an initial initial voltage and a corresponding initial lightning stroke damage effect value; constructing each standard lightning pulse voltage-time curve, obtaining a damage effect integral function, and obtaining an initial external multi-gap lightning arrester voltage-time curve in combination with the initial initial voltage and the initial lightning damage effect value; based on the initial voltage-time curve of the external multi-gap lightning arrester, parameter optimization is carried out by utilizing a genetic algorithm, the voltage-time curve of the external multi-gap lightning arrester is obtained, and equipment and a medium are used for realizing the method. Compared with the prior art, the method has the advantages that the volt-second characteristic curve of the external multi-gap lightning arrester is directly estimated by using the genetic algorithm, and the characteristic curve capable of accurately reflecting the influence of the lightning stroke on the power distribution network is obtained through a simple estimation method.

The invention relates to the field of power systems, and discloses an intelligent power transmission line lightning stroke characteristic intelligent identification online monitoring method comprising the following steps: collecting multi-source data, preprocessing, modeling lightning stroke probability and spatial distribution by using a chaos dynamics model, extracting and classifying characteristics based on deep learning, and optimizing a prediction strategy in combination with reinforcement learning. Real-time early warning and automatic response are achieved; the invention also provides an intelligent transmission line lightning stroke characteristic intelligent identification online monitoring system. The system comprises a data acquisition module, a data processing module, a chaotic dynamics modeling module, a deep learning identification module, a reinforcement learning optimization module and an early warning and response module. According to the method, the real-time collection and preprocessing technology of multi-source data is adopted, data cleaning and standardization are carried out in combination with multi-dimensional information such as meteorological, electrical and historical lightning stroke data, the accuracy and consistency of the data are ensured, and the reliability of a prediction result is effectively improved.

The invention discloses a resistance-reducing grounding mechanism and an optimization method thereof.The resistance-reducing grounding mechanism comprises a grounding pile foundation, a grounding resistance-reducing cage, a grounding down lead and a corrugated external conductor wire, the grounding pile foundation is vertically buried underground, the grounding resistance-reducing cage wraps the grounding pile foundation in the horizontal dimension and the vertical dimension, and the grounding down lead is connected with the corrugated external conductor wire; the grounding down lead extends downwards from the ground to be connected to the grounding resistance reduction cage, and the corrugated external conductor wire is attached to the grounding resistance reduction cage. Therefore, the spatial three-dimensional wrapping design of the grounding resistance reduction cage can realize uniform diffusion in a larger range, the current diffusion capability of the grounding mechanism is improved, the external conductor wire with the corrugated structure increases the effective length and the surface area of the conductor, and the current diffusion capability of the grounding mechanism is further improved; and the grounding resistance reduction cage and the corrugated external conductor wire form a multi-layer conductive channel, so that the current discharge speed can be further increased, the grounding resistance value is reduced, and the transient overvoltage during lightning stroke is reduced, thereby ensuring the safe and stable operation of a power system.

The invention relates to the technical field of lightning arrester performance testing, and discloses a device and method for testing the performance of a resistor disc of a lightning arrester, and the device comprises a plurality of test branches, each test branch comprises a lightning current generation module, one end of the lightning current generation module is used for being connected with the low-voltage end of the resistor disc of the lightning arrester, and the other end of the lightning current generation module is used for being connected with the low-voltage end of the resistor disc of the lightning arrester; the low-voltage end of the energy storage module is connected with the other end of the lightning current generation module; the discharge control module comprises a discharge switch and a driving source, the high-voltage end of the discharge switch is used for being connected with the high-voltage end of the energy storage module, the low-voltage end of the discharge switch is used for being connected with the high-voltage end of a resistor disc of the lightning arrester, a plasma ejector is arranged in the low-voltage end of the discharge switch, and the plasma ejector is driven by the driving source. The control module is used for controlling the discharge switch to apply lightning stroke to the resistor disc of the lightning arrester. Therefore, the performance test of the resistor disc of the lightning arrester under multiple lightning strokes is realized.

The invention discloses a method and system for evaluating lightning stroke inhibition energy of a 10kV overhead transmission line, and relates to the technical field of lightning protection of overhead transmission lines, and the method comprises the steps: collecting the data of the overhead transmission line, and constructing a partial element equivalent circuit model of a short lead and a multi-conductor transmission line model of a long lead; the method comprises the following steps: for an overhead transmission line system with a long lead and a short lead simultaneously, carrying out hybrid modeling on the long lead and the short lead, and analyzing lightning surge of a distribution network overhead transmission line; and the optimal lightning arrester configuration scheme is determined by performing simulation evaluation on different configuration schemes. According to the hybrid modeling method, the multi-conductor transmission line equation of the long wire and the partial element equivalent circuit model of the short wire are combined, propagation of lightning stroke surge is accurately analyzed, the lightning protection performance of the system is improved, the overall cost is reduced, and efficient and economical lightning protection is achieved.

The invention relates to the technical field of hydropower station lightning protection, and relates to a hydropower station power transmission line lightning stroke risk assessment method comprising the following steps: based on power transmission line tower footing types and position information, combining a preset height threshold to divide lightning stroke types, and marking high-risk candidate tower footing according to protection range parameters of a lightning suppressor; operating parameters and overvoltage monitoring data of the lightning suppressor are collected in real time, environmental factors and tower footing insulation configuration differences are fused, and a tower footing correlation model is constructed; carrying out vulnerability evaluation on the high-risk candidate tower footing by adopting the tower footing type correction coefficient; constructing a lightning stroke risk assessment model for the tower footing exceeding the preset height threshold, optimizing risk assessment model parameters by using the overvoltage monitoring data, and generating a risk assessment result; and correcting protection range parameters according to lightning stroke event feedback, and iteratively updating the risk assessment model in combination with historical operation data of the lightning suppressor. Lightning stroke risk assessment of the whole hydropower station power transmission line is realized, and lightning stroke risk assessment efficiency and accuracy are improved.

The invention relates to the technical field of electronic circuits, in particular to a radio frequency front-end lightning protection circuit and lightning protection equipment. The circuit comprises a primary discharge module, a radio frequency signal protection branch and a direct current power supply protection branch, the input end of the primary discharge module is connected with an antenna port, and the primary discharge module is used for discharging high-energy pulses generated by lightning stroke; the radio frequency signal protection branch is connected between the output end of the primary discharge module and a low noise amplifier of the radio frequency receiving link, and is used for coupling a radio frequency signal to the low noise amplifier and carrying out isolation and voltage limiting on a lightning stroke residual pulse; the direct current power supply protection branch circuit is connected between the output end of the primary discharge module and a power supply voltage stabilizer of the direct current power supply link, and is used for transmitting a direct current power supply to the power supply voltage stabilizer and carrying out isolation and voltage limiting on the lightning stroke residual pulse. The circuit can be combined with a radio frequency front end and used for a navigation antenna, and the lightning stroke protection capability is improved.

A wind turbine monitoring device for monitoring a wind turbine including a lightning sensor for detecting a lightning strike on a wind turbine blade includes a lightning parameter acquisition part configured to acquire at least one lightning parameter based on an output of the lightning sensor, a lightning level determination part configured to determine a level of the lightning strike based on the at least one lightning parameter acquired by the lightning parameter acquisition part; and an inspection control part configured to judge whether it is necessary to automatically inspect the wind turbine blade by at least one inspection unit for inspecting the wind turbine blade, according the level of the lightning strike determined by the lightning level determination part.

The invention discloses an offshore wind plant lightning arrester annual failure rate evaluation method considering lightning randomness, and belongs to the field of offshore wind plant lightning protection, and the method comprises the following steps: S1, determining easy-to-out-of-limit electrical parameters; s2, based on the easy-to-out-of-limit electrical parameters, calculating the failure probability of the lightning arrester under single lightning stroke; s3, obtaining a lightning current amplitude cumulative probability; s4, obtaining a lightning arrester interval failure probability considering the lightning current amplitude cumulative probability; and S5, calculating the annual lightning stroke failure rate of the lightning arrester of the offshore wind plant based on the interval failure probability of the lightning arrester by considering the lightning inducing area of the fan of the offshore wind plant. According to the offshore wind plant lightning arrester annual failure rate evaluation method considering lightning randomness, lightning randomness is introduced, failure quantitative calculation and multi-parameter comprehensive analysis are achieved, lightning arrester model selection is supported, and technical upgrading of offshore wind plant lightning arrester reliability analysis from qualitative analysis to quantitative analysis and from theory to application is completed.

A method is presented for determining a likelihood of an ignition hazard. The method comprises receiving a current waveform for a lightning strike event at a conductive member that forms an interface with a decomposable member. Material parameter inputs for the conductive member and the decomposable member are received. Based at least on one or more of the received material parameter inputs and an energy from the current waveform, a heating of the decomposable member is resolved, and a quantity of volatiles within the interface volume are determined. A total pressure generation within the interface volume is determined. A probability of ignition hazard by the lightning strike event is output based on a comparison of the total pressure generation and a containment pressure threshold for the interface volume.

The utility model particularly relates to a base station which comprises a data center module, an external connection structure and a vertical rod structure. The external connection structure is arranged on the data center module, and the external connection structure is electrically connected with the data center module. The external connection structure is arranged at one end of the vertical rod structure and electrically connected with the vertical rod structure. The vertical rod structure is a conductor and is provided with a grounding site, and the grounding site is used for grounding. According to the utility model, the data center module is grounded through the vertical rod structure, the grounding site can be in direct contact with the ground and can also be connected with an external ground wire, the grounding function of the reference station is realized, and when the reference station is struck by lightning, current is rapidly conducted to the ground through the vertical rod structure, thereby reducing the potential difference in the data center module and improving the reliability of the data center module. Destructive voltage is prevented from being generated, and the risk that electrical components in the data center module are damaged by lightning stroke is effectively avoided. The problem that internal electrical components are easily damaged when the reference station encounters lightning stroke in the prior art is solved.

The invention discloses a method and system for evaluating lightning stroke position probabilistic distribution based on main line and branch line arrangement, and relates to the technical field of power system protection and control, and the method comprises the steps: collecting power distribution network data, and carrying out the preprocessing; traversing each point in the large graph by using DFS, and judging the number of connectionless sub-graphs; drawing a surrounding line for each non-connected sub-graph; probabilistic distribution evaluation of lightning stroke positions is carried out in a surrounding line range; designing and training a dynamic current waveform model, and simulating a current generated by a lightning event to a power distribution network system; according to the method, the probabilistic distribution of the lightning stroke positions is accurately evaluated, and the potential influence of lightning events on the power distribution network system is comprehensively considered, so that the lightning protection capability of the power distribution network is remarkably improved, the occurrence rate of lightning stroke accidents is reduced, and the stability and safety of power supply are ensured.

The invention discloses an overhead transmission line lightning stroke risk early warning method and device and a medium. The method comprises the following steps: training a pre-constructed neural network based on historical data of a lightning stroke event of the overhead transmission line, and generating a lightning current amplitude prediction model; based on the lightning current amplitude in the historical data, constructing a lightning current amplitude probability distribution function of each region; obtaining input data of lightning current amplitude prediction through meteorological thunderstorm data and numerical weather forecast data; inputting the input data into a lightning current amplitude prediction model, obtaining a predicted lightning current amplitude, inputting the predicted lightning current amplitude into a corresponding lightning current amplitude probability distribution function, and determining a lightning current amplitude probability; and determining a lightning trip-out rate of the overhead transmission line according to the predicted lightning current amplitude and the lightning current amplitude probability in combination with the transmission line data, and determining a lightning flashover risk early warning level of the transmission line according to the lightning trip-out rate.