554 results about "Ice melting" patented technology

The invention relates to the technical field of tunnel disaster identification, in particular to a tunnel portal icing disaster identification and prediction method based on a multi-modal data fusion technology. According to the technical scheme, the method comprises the steps of multi-source data acquisition, heterogeneous data processing, feature level fusion, disaster recognition, space-time prediction and dynamic early warning. According to the invention, a multi-modal sensor is deployed to collect tunnel portal temperature, space structure and environmental parameters, intelligent processing and multi-stage feature fusion are carried out, ice layer distribution identification, icing trend detection and time-space prediction are realized by using a deep network, an ice melting device is dynamically activated in combination with a graded early warning mechanism, and vehicle early warning is linked. A sensing, analysis, prediction, disposal and calibration closed loop is formed, the accuracy of ice coagulation disaster detection, the prospective performance of prediction and the intelligence of disposal are remarkably improved, and the tunnel traffic safety and the long-term robustness of the system are guaranteed.

The invention relates to a photo-thermal super-hydrophobic multifunctional anti-icing coating as well as a preparation method and application thereof. The photo-thermal super-hydrophobic multifunctional anti-icing coating comprises primer and finish paint, the primer comprises the following raw materials in parts by weight: 20-25 parts of bisphenol A type epoxy resin and / or fluorine modified epoxy resin, 10-20 parts of fluorine modified polyacrylic resin and / or polyurethane resin, 5-10 parts of a curing agent and 40-55 parts of a solvent; the finish paint comprises the following components in parts by weight: 2-5 parts of polytetrafluoroethylene, 1-3 parts of soluble polytetrafluoroethylene, 1-5 parts of polydimethylsiloxane and 85-90 parts of fluorinated MOF dispersion liquid. Compared with the prior art, the photo-thermal super-hydrophobic multifunctional anti-icing coating provided by the invention has the characteristics of super-hydrophobicity, rapid ice melting, wear resistance, reduction of ice adhesion strength and reduction of icing amount, can effectively solve the problem of icing of an aluminum conductor of a power transmission line of a power system, and can be applied to power equipment such as the aluminum conductor of the power transmission line.

The invention relates to the field of super-hydrophobic materials, in particular to a basalt fiber composite material as well as a preparation method and application thereof. According to the composite fabric material provided by the invention, a multistage micro-nano rough surface of the MoS2 nanoflowers and the silver nanoparticles is constructed on the fiber substrate, so that not only is super-hydrophobic self-cleaning realized, but also the anti-icing performance is relatively high, and particularly, rapid heating is realized by combining broadband absorption of the MoS2 nanoflowers and a local surface plasma resonance effect of the silver nanoparticles; and meanwhile, the silver nanoparticles accelerate heat conduction, so that excellent ice melting capability is obtained. The high conductivity of the silver nanoparticles constructs a conductive path, and the layered structure of MoS2 triggers interface polarization, so that the electromagnetic shielding effectiveness of the X wave band is improved. The dual antibacterial mechanism of the MoS2 nanoflowers and the silver nanoparticles also realizes broad-spectrum efficient antibiosis, the preparation method is green and environment-friendly, the cost is low, and the requirements of complex scenes such as wearable electronic equipment, medical protection, polar region protection and national defense can be met.

The invention provides a mountain wind power plant fan icing intelligent forecasting method and system, and relates to the field of fan icing forecasting. The method comprises the following steps: determining a meteorological element threshold value of a fan in an icing scene and a meteorological element threshold value of the fan in an ice melting scene; establishing a temperature-wind speed-power dynamic response model; constructing a three-layer linkage model for fan icing prediction; the first-layer model judges an icing condition in a preset range around the station based on a meteorological element threshold value in an icing scene; the second-layer model is started before the first-layer model judges the icing condition, and a convection radiation ice melting scheme is coupled when the meteorological condition reaches a meteorological element threshold value in an ice melting scene; and on the premise of the second-layer model, the third-layer model timely triggers graded early warning based on a temperature-wind speed-power dynamic response model, and outputs a forecasting and early warning result. According to the method, the regional adaptability and precision of fan icing forecasting are improved, risk level early warning is optimized, and about 10% of power generation loss of a wind power plant is reduced.

The invention relates to the technical field of electrical digital data processing, and discloses a train ice melting simulation optimization method of an electromagnetic thermal coupling model fused with a deep learning method, which comprises the following steps of: inputting a geometric representation tensor and a physical working condition parameter vector containing an electromagnetic excitation frequency and a reference environment temperature into a feature mapping neural network; outputting a dual-channel space source item tensor containing basic heat source power density and a heat source to temperature change sensitivity distribution matrix through nonlinear convolution operation; constructing a heat conduction discrete numerical value evolution operator configured with an active item linear correction interface; time stepping operation is executed according to the heat conduction time scale, a basic heat source is corrected in real time through the Hadamard product of a sensitivity distribution matrix and temperature deviation, and an operator is substituted for solution. On the premise that electromagnetic-thermal nonlinear coupling characteristics are reserved, decoupling of the time scale is achieved, and the calculation efficiency in high-frequency physical field simulation is effectively improved.

The invention discloses a concrete model under salt freezing circulation, a construction method and a construction method of a damage evolution model, and a salt freezing circulation process is simplified into processes of continuous accumulation of sulfate crystals in pores, water condensation into ice, and repeated expansion and contraction of ice melting into water. The process of continuous accumulation of pore sulfate crystals in the sample concrete model and the process of mortar reduction and porosity increase in the sample concrete model are simulated, model parameters are adjusted, so that the salt freezing process of the sample conforms to the actual situation, and the service life of concrete is predicted through the sample concrete model. A specific time node reaching a failure standard is accurately predicted; the invention discloses a concrete damage evolution model based on the combination of continuous damage mechanics and a crack propagation theory, and aims to solve the problem that a traditional concrete damage model cannot accurately predict concrete damage evolution in a salt freezing circulation environment, and particularly, the long-term influence of the salt freezing environment on a concrete structure is lack of accurate quantitative analysis.

The invention, which belongs to the technical field of power transmission line deicing, discloses an ice and snow disaster-resistant power transmission line adaptive ice melting device comprising an annular body of which the inner diameter is adaptive to the outer diameter of a power transmission line and which is used for being fixed on the power transmission line in a surrounding manner; the distributed temperature sensor array is uniformly embedded in the inner surface of the annular body and is used for monitoring the surface temperature distribution of the power transmission line in real time; the heating element layer covers the periphery of the annular body, comprises at least two conductive film layers which are insulated from each other, and is used for generating Joule heat in gradient distribution; and the control module is arranged in the waterproof cavity at the side part of the annular body, is electrically connected with the temperature sensor array and the heating element layer, and is used for dynamically adjusting heating parameters according to the temperature data. When temperature values of more than three adjacent sensors are detected to be lower than a freezing point threshold value, a gradient heating program is started, the current density of each conductive film layer is dynamically adjusted according to an icing thickness calculation model, and melting and falling of an ice layer are realized.

The invention relates to a low-voltage distribution network non-power-off online ice melting method based on mobile power supply equipment, and the method comprises the following steps: obtaining meteorological information, and line parameter information and line icing information of a low-voltage distribution network; according to the meteorological information, the line parameter information and the line icing information, calculating the minimum ice melting current required by the icing line and the ice melting line power under the minimum ice melting current; and selecting to deploy a first mobile power supply device for transmitting power, or deploying a second mobile power supply device and the first mobile power supply device for transmitting power and absorbing power respectively, so as to carry out ice melting operation based on the ice melting line power. Ice melting can be carried out without power outage, and the supporting capacity of a distribution network line for coping with extremely cold climate is improved.

The invention relates to a tunnel portal road ice condensation model generation method based on artificial intelligence. According to the method, a multi-dimensional sensor network is deployed at a tunnel portal to collect environment and road surface data in real time, a characteristic variable set of quantitative humidity trap effects such as temperature gradient and humidity gradient is constructed, and then a dynamically weighted environment association graph structure is established according to the spatial position of a sensor; a graph neural network model is trained by using the graph structure to capture the spatial conduction rule and time evolution characteristics of microclimate parameters, and finally probability distribution output by the model is converted into a road freezing model, so that accurate positioning of a tunnel portal freezing high-risk area is realized, the spatial blind area of a traditional uniform distribution model is overcome, and the construction efficiency is improved. The early warning reliability is obviously improved, and a scientific basis is provided for accurate scheduling of ice melting resources.

The invention relates to the technical field of road ice melting, and discloses a road ice melting implementation system and method. The system comprises a meteorological monitoring platform, a snow-melting agent spraying platform and a management and control platform, the method comprises the following steps: firstly, collecting meteorological data and monitoring a road surface state to obtain an initial road ice melting data set, and then carrying out anomaly detection and filling missing data; establishing a road ice melting prediction model based on the neural network, predicting whether the road is iced or not, and outputting a road icing result; then ice melting work is carried out, an enhanced hawk optimization algorithm is introduced to optimize spraying parameters in the ice melting work, and a road ice melting implementation strategy is generated; and finally, adjusting a road ice melting implementation strategy, and establishing a snow melting environment coupling model and an alarm mechanism. By analyzing and processing the road ice melting data, the purpose of implementing road ice melting is achieved, and the method is objective and accurate.

The invention discloses a direct-current ice melting system of a subway overhead line system, which comprises an overhead line system and a running rail, and further comprises a subway rectification module and a direct-current ice melting module, the subway rectification module and the direct current ice melting module are connected with the contact network. The invention further discloses a direct-current ice melting method of the subway overhead line system. The direct-current ice melting device can stably output direct-current ice melting current in a large range to meet the ice melting requirements under different scenes, meanwhile, different wiring modes are adopted according to the ice melting requirements to melt ice on a plurality of contact nets or walking rails at the same time, and the operation time is saved.

The invention relates to the technical field of overhead line system deicing, and discloses an intelligent deicing method and system for an overhead line system. The method comprises the following steps: firstly, acquiring ice layer monitoring data such as ice layer thickness distribution information, environment temperature information and wind speed information of a contact network area in real time; inputting the data into a simulation modeling tool, and constructing a three-dimensional ice layer distribution model of the overhead line system; judging whether deicing is needed or not according to matching of ice layer thickness distribution information in the model and a preset ice layer thickness threshold value mapping table; if yes, deicing equipment position parameters and deicing agent type parameters are extracted from a preset parameter database, and the deicing agent applying process is simulated in the three-dimensional model; and finally, outputting an ice layer fracture path, an ice melting range and deicing efficiency data, analyzing rationality, matching degree and effectiveness, and generating a parameter optimization instruction to adjust subsequent deicing parameters.

The invention provides a multifunctional hybrid emergency supporting device for online ice melting and electric energy management, which comprises a multifunctional active device connected to the head end of a line and a grounding transformer connected to the tail end of the line, the multifunctional active device comprises a first cascade H-bridge module K1, a first midpoint clamping module D1, a second cascade H-bridge module K2, a second midpoint clamping module D2, a third cascade H-bridge module K3, a third midpoint clamping module D3, a fourth cascade H-bridge module K4, a fourth midpoint clamping module D4, a first direct current split capacitor C1, a second direct current split capacitor C2, a first filter inductor L1 and a second filter inductor L2. The device is matched with the grounding transformer through the multifunctional active device to form a zero-sequence ice melting loop, and has the advantages of no influence on normal power utilization of a user, high equipment utilization rate and low cost.

The invention discloses a preparation method of a composite micro-groove super-hydrophobic low-ice-adhesion photo-thermal film. The preparation method comprises the following steps: (1) constructing a low-elasticity-modulus photo-thermal composite sponge substrate through a solvothermal method; (2) uniformly coating the surface of a substrate with a polydimethylsiloxane (PDMS) precursor solution by adopting an aerosol-assisted deposition technology, and carrying out thermocuring to form a functional composite interface layer; and (3) constructing a multi-stage scallop surface-imitating micro-nano groove composite structure on the surface of the interface layer by using a femtosecond laser micro-nano processing technology. The prepared film has super-hydrophobicity, the surface of the film is in a Cassie-Baxter wetting state with a 164-degree contact angle and a 1-degree rolling angle, and the film has a surface self-cleaning function. Under the icing condition, the adhesion strength of an ice layer of the system is obviously reduced to 2.57 kPa, the static delay icing time is effectively prolonged to 1587 s, and the system has the photo-thermal response characteristic and can realize rapid icing ablation under the standard solar irradiance; the preparation method has the characteristics of high process controllability, environment friendliness and the like, and is suitable for large-scale continuous production.

The invention discloses a subway flywheel energy storage system with a direct-current ice melting function, which comprises a medium-voltage looped network, a contact network, a running rail, a positive bus, a negative bus, a subway rectifier module and a flywheel energy storage module, the subway rectification module is connected with the positive and negative buses. The positive bus is connected with a contact network, and the negative bus is connected with a walking rail; the flywheel energy storage module is connected with the positive bus, the negative bus and the walking rail. The flywheel energy storage module is further connected with the contact net through a circuit breaker QF, and the contact net is connected with the walking rail through a far-end short-circuit switch K3. The invention further discloses an ice melting and energy storage method applying the subway flywheel energy storage system with the direct-current ice melting function. The device has two functions of direct-current ice melting and flywheel energy storage charging and discharging, time division multiplexing is controlled by the two functions through a switch, efficient utilization of equipment is achieved, and the cost performance is improved.

The invention discloses a low-temperature cold trap water removal device which comprises more than two water removal channels which are connected in parallel; each water removal channel comprises a refrigeration water removal gas path and an ice melting purging gas path which are connected in series; each refrigeration and water removal gas path is also connected with an inlet of a dry gas collection gas path, and an outlet of the dry gas collection gas path is used for being connected with an analyzer; and each water removal channel is connected with a controller, and the controller is used for controlling the refrigeration water removal gas paths and the ice melting purging gas paths of the different water removal channels to operate in a staggered mode. According to the application, moisture in the gas to be dewatered can be effectively removed, frost can be timely removed, and related phenomena such as relatively large dead volume of the cold trap can be avoided.

The invention relates to the technical field of induction type magnetic thermoacoustic, and discloses an ice melting and deicing method and system based on induction type magnetic thermoacoustic. The method comprises the following steps: acquiring ice surface state signal data in real time, and constructing a multi-dimensional signal processing system to output a standardized ice melting signal; establishing a parameter database based on a magneto-thermo-acoustic conversion technology, and positioning target parameters by using a feature matching algorithm to generate a control label; a historical ice melting case information base is constructed, a multi-factor weight distribution model is combined, weighting is carried out through a decision tree algorithm, ice melting matching degree scores are calculated, and a priority sequence is generated; solving an optimal ice melting scheme by adopting an improved genetic algorithm; and outputting a result through the interactive verification platform, and tracking and feeding back. According to the method, the ice melting process can be accurately regulated and controlled, multiple factors are comprehensively considered, the ice melting efficiency is effectively improved, the energy consumption is reduced, intelligent and accurate ice melting is achieved, and the method is suitable for ice melting and deicing work in multiple scenes.

The invention relates to the technical field of icing prediction, and discloses a state prediction method, system, equipment and medium after icing and ice melting of a power transmission line, and the method comprises the steps: obtaining the target data of a target power transmission line, and carrying out the preprocessing, thereby guaranteeing the accuracy and reliability of the data, and providing a solid foundation for the subsequent model building. The post-ice-melting icing state prediction model established based on the pre-processed target data can accurately predict the post-ice-melting icing state, and an important decision basis is provided for operation and maintenance personnel. The establishment of the risk assessment model enables the operation and maintenance personnel to quantitatively assess the risk level of the prediction result of the icing state after ice melting, thereby making an anti-icing operation and maintenance strategy more scientifically. According to the method, the accuracy and scientificity of state prediction after ice coating and ice melting of the power transmission line are improved, powerful technical support is provided for anti-icing operation and maintenance work, and the power transmission line fault risk caused by ice coating is effectively reduced.

The invention discloses a mobile contact network direct-current ice melting method, which comprises the following steps that: a monitoring vehicle and an ice melting vehicle are marshaled and run to a designated place, the two vehicles are de-marshaled, the ice melting vehicle is parked to the designated place, and the monitoring vehicle continues to run towards an ice melting section. The ice melting vehicle starts to electrically connect the wire clamp for construction after the contact network is subjected to electricity testing and grounding, and at the moment, the monitoring vehicle collects environment working conditions and icing state information in the ice melting section. And after construction of the electric connecting wire clamp and acquisition of monitoring information are completed, the monitoring vehicle sends an optimal ice melting current value to the ice melting vehicle, and the ice melting vehicle outputs an actual ice melting current after judging that the ice melting vehicle works normally. In the ice melting process, the monitoring vehicle reciprocates in the ice melting section, the icing degree of the contact network is monitored, and when it is monitored that icing disappears, an ice melting stopping instruction is sent to the ice melting vehicle. After ice melting is finished, the contact network is subjected to electricity testing and grounding at the ice melting vehicle, then the electric connecting wire clamp is removed, and the monitoring vehicle runs towards the ice melting vehicle. The technical problems that an existing overhead line system electric heating ice melting device is poor in mobility and low in utilization rate can be solved.

The invention relates to the technical field of direct-current deicing device tests, and provides a dynamic load test method and system for a direct-current deicing device. Comprising the following steps: generating a load sudden change sequence comprising ice layer falling positions, ice layer falling thicknesses and load impedance fluctuation time sequence data corresponding to a plurality of load sudden change time periods according to operation state data of a direct current ice melting device in an ice layer non-uniform melting scene; according to a preset dynamic load response mechanism comprising an adaptive adjustment power protection trigger threshold value and a control system time delay threshold value, bus voltage response simulation is carried out on each load abrupt change time period in the load abrupt change sequence in sequence to obtain a direct current bus response time sequence data set; and carrying out anti-disturbance capability analysis on the direct-current ice melting device by combining a preset anti-disturbance capability evaluation threshold value to obtain an anti-disturbance capability evaluation result. Based on dynamic simulation of load mutation caused by uneven melting of an ice layer and influence of the load mutation on bus voltage response, comprehensiveness and reliability of disturbance rejection evaluation of the direct-current ice melting device are improved.

The invention relates to the technical field of external insulating materials for power equipment, in particular to silicone rubber, a preparation method thereof and application of the silicone rubber in a composite insulator. The silicone rubber is prepared from the following raw materials in parts by weight: 100 parts of methyl vinyl silicone rubber raw rubber, 5-20 parts of hydrophobic silicon dioxide aerogel powder, 3-15 parts of conductive and heat-conducting filler, 10-30 parts of modified aluminum hydroxide, 15-35 parts of fumed silica, 1-3 parts of a silane coupling agent and 2-5 parts of a structuring control agent, 1-4 parts by weight of a low surface energy auxiliary agent, and 0.5-2 parts by weight of a vulcanizing agent. The silicone rubber provided by the invention integrates long-acting hydrophobic anti-icing, active low-power-consumption ice melting and excellent arc ablation resistance, has long-term stability, and is especially suitable for high-voltage insulators in severe environments such as heavy ice areas and heavy dirty areas.

The invention relates to the technical field of ice prevention and disaster reduction of high-voltage power transmission lines, and discloses a cascaded direct-current ice melting system of a high-voltage power transmission line, a control method and a device. The method comprises the following steps: inputting a test signal to the cascaded direct-current deicing system, and detecting the voltage and current of each node; calculating line impedance distribution based on the voltage and current of each node, and constructing a line equivalent model; calculating the minimum ice melting current based on the ice thickness monitoring data and the weather data, and calculating the output current of each ice melting device based on the minimum ice melting current and the line equivalent model; monitoring circulating current between systems, and calculating virtual compensation voltage based on the circulating current; and adjusting the output voltage of each ice melting device based on the virtual compensation voltage. The ice melting success rate, the safety of the system and the service life of the system can be improved.

The invention discloses an overhead ground wire non-outage direct current deicing method, medium and system, and the method comprises the steps: determining the length of an overhead ground wire section to be deiced according to the obtained overhead ground wire parameters, overhead ground wire icing conditions and meteorological environment parameters; according to the resistance corresponding to the length of the ground wire section, the overhead ground wire parameter, the icing condition and the meteorological environment parameter, obtaining an ice melting current; calculating a lightning current value according to the overhead ground wire parameters and the lightning current peak value; if the maximum ice-melting current is greater than or equal to the thunder current value, reducing the length of the ground wire section until the maximum ice-melting current is less than the thunder current value; if the maximum ice melting current is smaller than the lightning current value, insulation transformation is carried out on the ground wire; and connecting the transformed ground wire section with a direct-current ice melting device to form an ice melting loop, and carrying out direct-current ice melting without power failure. According to the invention, lightning protection and ice melting are taken into consideration, the ice melting work is completed while lightning protection is maintained, and the reliability and the safety of uninterrupted power supply ice melting of the overhead ground wire in severe weather of a power system are improved.

The invention relates to a control method and device of snow melting equipment, the snow melting equipment and a storage medium, and the control method comprises the following steps: when the snow melting equipment is in a smoothie making mode, obtaining a first rotating speed of a stirrer; if the first rotating speed is smaller than the preset rotating speed, controlling the compressor to stop working, and meanwhile, controlling the stirrer to continuously run for first duration; acquiring a second rotating speed of the stirrer after the first duration; if the second rotating speed is smaller than the preset rotating speed, the stirrer is controlled to stop working, and meanwhile, a refrigerant reversing valve of the compressor is controlled to perform primary reversing to enter an ice melting mode. According to the technical scheme, the technical problems that when beverage smoothie with the high water content is made through traditional snow melting equipment, water in the beverage smoothie is prone to icing on the surface of the refrigeration cylinder, stirring of the stirrer is affected, smoothie making is affected, and the user experience is poor are effectively solved.

The invention discloses a cooperative control method and system for double sets of ice melting devices based on closed-loop dynamic balance. The method comprises the following steps: detecting mechanical stress data, torsion angle data, line temperature data and first impedance time sequence data of a power transmission line under the condition of non-uniform ice coating and shedding; according to the mechanical stress data, the torsion angle data and the line temperature data, carrying out stress state prediction through a first neural network model; determining an electrical parameter fluctuation range according to the predicted stress change time sequence data and the predicted first impedance time sequence data; according to the electrical parameter fluctuation range, predicting a predicted output current phase difference of the two ice melting systems in the double sets of ice melting devices through a second neural network model; performing dynamic phase compensation on the real-time output current of the two ice melting systems according to the predicted output current phase difference and the closed-loop dynamic equilibrium compensation parameters; according to the invention, electrical parameter fluctuation caused by mechanical imbalance can be effectively suppressed, the risk of line oscillation is reduced, and the ice melting efficiency is improved.

The invention discloses a full-process monitoring system, method and equipment for an ice melting station, and the system comprises a power monitoring module which is used for monitoring the line operation conditions of a high-voltage power side and a low-voltage power side, and obtaining the line data; the switch cabinet module is used for controlling the action of switch equipment in the switch cabinet and monitoring the state parameters of the switch equipment; the transformer module is used for monitoring operation parameters of a transformer and determining an opening and closing signal according to the operation parameters of the transformer; the microcontroller is used for fusing the line data, the switch equipment state parameters and the opening and closing signals to generate a dynamic ice melting instruction; the ice melting control module is used for determining a matched control strategy according to the dynamic ice melting instruction so as to control elements in the ice melting device to act, monitoring the running state of each element and displaying monitoring data through a communication screen; the safety risk of manual operation is reduced, and automatic control and real-time monitoring of the ice melting device are realized, so that the ice melting efficiency, reliability and timeliness are improved.

The invention relates to a direct-current deicing power supply, which comprises a rectification module and a direct-current conversion module, the direct-current conversion module comprises a plurality of direct-current conversion units, the input ends of the plurality of direct-current conversion units are connected in parallel and are connected with the output end of the rectification module, and the output ends of the plurality of rectification conversion units are connected in series. The ice melting device is used for being connected with an overhead ground wire to be de-iced; the rectification module is used for converting input alternating current into direct current and transmitting the direct current to the direct current conversion module; and the direct current conversion module is used for increasing the voltage of the received direct current and carrying out ice melting treatment on the overhead ground wire to be subjected to ice melting by using the boosted direct current. The DC ice-melting power supply provided by the invention can provide a large voltage when the overhead ground wire to be ice-melted is subjected to ice-melting treatment, so that the ice-melting treatment of the overhead ground wire to be ice-melted can be realized.

The invention discloses an alternating current ice melting optimization processing method and system for ice melting of a power transmission line. The method comprises the following steps: predicting ice layer thickness distribution data based on obtained surface temperature distribution data and environment data of a target line; calculating heat demand data according to the ice layer thickness distribution data and the efficiency data of the alternating current ice melting equipment; calculating current configuration data and frequency configuration data of the AC deicing equipment according to the heat demand data, and inputting the current configuration data and the frequency configuration data into a pre-constructed eddy current effect prediction model to obtain eddy current distribution data of the target line; performing judgment based on electromagnetic shielding effectiveness data obtained by quantifying the eddy current distribution data, and if the electromagnetic shielding effectiveness data is lower than a preset threshold value, inputting the eddy current distribution data and the heat demand data into a three-dimensional parameter space optimization model for solving to obtain a current distribution scheme; and executing a control instruction generated by the current distribution scheme. According to the method, stable operation of the power transmission line is realized.

The utility model discloses a deicing device which is used for deicing a battery replacing vehicle, a battery pack of the battery replacing vehicle is installed at the bottom of a vehicle body through a locking mechanism so that quick replacement of the battery pack can be achieved, the deicing device comprises a movable vehicle body and an electromagnetic heating unit installed on the vehicle body, and the electromagnetic heating unit can generate an alternating electromagnetic field on the periphery of the electromagnetic heating unit; the machine body can move to the bottom of a vehicle body of the battery changing vehicle and enables the bottom of the vehicle body and / or the locking mechanism to be heated under the action of the alternating electromagnetic field of the electromagnetic heating unit so as to conduct deicing operation on the bottom of the vehicle body and / or the locking mechanism. Heat for hot melting of the ice layer comes from heat energy generated by the locking mechanism and / or the vehicle body, and the heat energy is transmitted into the ice layer in a direct contact solid conduction mode, so that the transmission loss of the heat energy from the locking mechanism and / or the vehicle body to the ice layer is greatly reduced, the ice layer receives the heat from the locking mechanism and / or the vehicle body to a large extent, and the service life of the ice layer is prolonged. And the ice melting efficiency is greatly improved.

The invention discloses a high-strength anti-icing OPGW (Optical Fiber Composite Overhead Ground Wire) sag dynamic prediction and optimization system, particularly relates to the field of power transmission monitoring in alpine regions, is used for solving the problem that the sudden change of the sag of an OPGW is difficult to dynamically predict due to icing superposition, and is based on a load-deformation joint sequence accurately associated with a multi-source load response data set and segmented attached ice distribution. Identifying a tension rapid transfer node and fusing a temperature drop shrinkage trend, quantifying a risk through machine learning, driving local ice melting power distribution by a risk boundary, effectively suppressing a peak tension and leaving a controllable residual strain, and continuously correcting a prediction model by using time sequence increment assimilation; data driving and model correction are adopted for synchronous iteration, and prediction deviation caused by uneven ice attaching space and temperature shrinkage time sequence coupling is eliminated; the real-time ice melting scheduling output significantly delays the sag overrun caused by tension accumulation, ensures the optical fiber communication performance and the safe operation of the wire, and provides a quantitative decision basis for the operation and maintenance of the high-strength anti-icing OPGW line.