5 results about "Energy current" patented technology

The application provides a dissolved gas in oil prediction method and device considering physical information, and the method comprises the following steps: performing an oil-paper insulation discharge test; collecting operating state parameters during the discharge process; collecting oil samples during the discharge process and obtaining concentration data of dissolved gas in the oil; constructing a neural network prediction model by using the operating state parameters and the concentration data and performing training; receiving real-time monitoring data of the oil-paper insulation discharge, and realizing dissolved gas production prediction in the oil by using the neural network prediction model. The application adds physical information constraints to the neural network model, uses energy and current as constraint conditions, avoids the shortcomings that an artificial intelligence data-driven model excessively depends on the number and quality of data samples, and can accurately predict the dissolved gas production in the oil, which has certain guiding significance for improving the fault diagnosis capability of deeply mining the dissolved gas in the oil and ensuring the safe operation of power transformers.

The embodiment of the utility model provides a centralized combined lightning protection device. The centralized combined lightning protection device comprises a conductive base; the high-voltage lead is connected with the conductive base; the low-voltage lead is connected with the conductive base and is used for guiding current to a grounding end; the conductive joint is arranged between the high-voltage lead and the low-voltage lead and is used for connecting the high-voltage lead and the low-voltage lead; the metal spring is arranged on the conductive joint and is used for increasing the contact pressure between the conductive joint and the high-voltage lead and the low-voltage lead; the insulating sleeve wraps the outer sides of the high-voltage lead, the low-voltage lead and the conductive connector; a heat insulation ring is arranged between the conductive joint and the metal spring; and the conductive base is provided with a groove for fixing and supporting the conductive joint, and the bottom of the groove is provided with a plurality of through holes for heat dissipation. Through the scheme of the embodiment of the invention, the problems of contact point resistance increase and conductivity reduction caused by metal migration of the conductive material in the lightning protection device after long-term high-energy current passes through can be solved.

The embodiment of the invention provides a nuclear electromagnetic pulse antenna feeder protector with a monitoring function. The nuclear electromagnetic pulse antenna feeder protector comprises a two-stage nuclear electromagnetic pulse protection module, a non-contact monitoring module and a main control processing module. The two-stage protection module adopts a cooperative structure of a front-stage gas discharge tube and a rear-stage transient voltage suppression diode, so that transient high-energy current induced by nuclear electromagnetic pulse is effectively discharged, and residual voltage is clamped; the non-contact monitoring module respectively induces magnetic fields generated by transient current of the output end and the input end of the radio frequency path and a grounding discharge path through three paths of non-contact current sensors, and the magnetic fields are converted into voltage signals representing input current, output current and discharge current through an integral conditioning circuit; and the main control processing module evaluates the protection performance of the nuclear electromagnetic pulse antenna feeder protector in real time based on the input current, the output current and the discharge current represented by the three paths of voltage signals, pre-estimates the service life of the device and realizes fault positioning.

The application discloses a power transmission line state monitoring system based on an intelligent sensor, which establishes an energy boundary constraint matrix by converting the physical energy levels of inductive energy current, battery temperature and pressure state and vibration envelope signals, maps the residual energy constraint to the maximum available computing power upper limit of the end side reasoning network, carries out multi-objective exit node optimization in combination with the inherent physical complexity of the input dynamics tensor, so that the algorithm adaptively cuts the network reasoning depth according to the signal feature saliency, and on this basis, generates an optimized state report suitable for narrowband communication through confidence degradation evaluation and redundant field compression coding. In this way, the key transient detection and monitoring blindness problems caused by energy and computing power imbalance of the power transmission line intelligent sensor under the extreme coupling working condition of low current energy taking and microclimate mutation are solved, and the effective monitoring life cycle of the equipment under the passive supply state is significantly extended.

The invention provides an aviation transient electromagnetic transmitter and a control method thereof, and the transmitter comprises a power supply module which provides a required voltage for the transmitter, an energy storage module which improves the instantaneous output power of the transmitter, a resonance circuit which controls the edge of a transmitting current waveform of the transmitter, and an inverter circuit which realizes positive and negative pulse transmission. The protection circuit realizes overvoltage, overcurrent and overheating protection, the damping module eliminates turn-off oscillation of the transmitter, the synchronization module realizes synchronous work of the transmitter and other instruments and equipment, the signal generator generates a control signal required by the drive circuit, and the drive circuit generates a drive signal required by the inverter circuit. The auxiliary charging circuit is used for pre-charging the voltage of the resonance circuit to a set value so as to shorten the rising edge time of an emission current waveform and supplement energy consumed by emission, and the current monitoring circuit monitors the emission current waveform in real time and feeds back the emission current waveform to the power supply module to adjust the power supply voltage. According to the electromagnetic pulse transmitter and the control method thereof, accurate control on the waveform of the transmitted current can be realized.