594 results about "Supply and distribution" patented technology

The invention relates to the technical field of tunnel power supply and distribution, in particular to a tunnel modular prefabricated cabin power supply and distribution intelligent substation self-adaptive regulation and control system based on edge calculation. Comprising an edge calculation and AI decision-making unit which is used for realizing rapid acquisition, processing and instant decision-making of tunnel power supply and distribution multi-dimensional data, generating a power supply and distribution adaptive regulation and control strategy by deploying calculation resources and a machine learning algorithm at edge nodes close to a data source, and converting the strategy into an executable regulation and control instruction; a cloud platform collaborative management unit; and an intelligent sensing and internet-of-things unit. According to the invention, hierarchical decision control of the tunnel power supply and distribution system is realized by constructing a hybrid architecture of edge computing and cloud platform collaboration and a priority judgment mechanism; according to the invention, multi-modal data are integrated through the multi-protocol communication link module and the full-scene data fusion analysis module, and data association analysis is realized through Kalman filtering, D-S evidence theory and other algorithms.

The invention discloses a power supply and distribution method and system based on multi-modal data fusion and adaptive control, and the method comprises the steps: collecting real-time power supply and distribution data in a power supply and distribution network node, and obtaining power supply and distribution environment data; fusing the real-time power supply and distribution data and the power supply and distribution environment data by using a quantum heuristic multi-modal fusion algorithm to obtain fused power supply and distribution data; establishing an LSTM-CNN machine learning model based on the LSTM long and short term memory network and the CNN; inputting the fused power supply and distribution data into an LSTM-CNN machine learning model for training to obtain electric load prediction data; and based on the adaptive control strategy, sending a regulation and control instruction to the electric load equipment according to the electric load prediction data. And voltage fluctuation, flicker and harmonic distortion are effectively suppressed through real-time dynamic regulation and control, and voltage deviation and power factors of a user terminal are guaranteed to be optimal.

The invention discloses a self-adaptive switching system and method for power supply and distribution, and the system comprises a data collection module, an analysis module, a modeling module, a decision module, an execution module and an early warning module, and the data collection module generates a real-time monitoring signal; the analysis module performs dynamic weighted evaluation according to the real-time monitoring signal and generates an evaluation signal; the modeling module constructs a virtual model of the power supply system and generates an analog signal; the decision signal generates a control signal containing a path selection instruction; the execution module controls the semiconductor device to switch the physical connection state of the power supply according to the control signal and generates a switch feedback signal; and the early warning module forms an equipment health assessment result according to the switch feedback signal and an abnormal arc signal when the execution module switches the connection state and transmits the result to the decision module. The self-adaptive switching system for power supply and distribution can solve the problem that a traditional power supply and distribution switching system depends on a single threshold to judge the state of a power supply and cannot comprehensively evaluate the quality of electric energy.

The invention relates to a network topology dynamic optimization method and equipment for large-scale power supply and distribution equipment networking. The method comprises the following steps: step S101, real-time data acquisition and state sensing; step S102, carrying out network topology modeling and performance evaluation; step S103, dynamic risk assessment and optimization target generation; s104, carrying out topological optimization decision making based on a feasibility maintenance type genetic algorithm; step S105, carrying out optimal strategy verification and seamless switching; selecting an optimal network topology reconstruction scheme from the Pareto optimal solution set according to a preset decision strategy; and after the reconstruction scheme is verified on a control level, generating an equipment cascade and open circuit control instruction sequence, and guiding related nodes to complete undisturbed switching of the network topology in a preset time window through a distributed cooperative control mechanism. According to the method, generation of invalid solutions can be avoided, and the convergence efficiency of a large-scale network topology optimization algorithm is remarkably improved.

The invention relates to an airflow jet heat dissipation, dehumidification and dust removal system of a power device, and belongs to the technical field of power supply and distribution. Comprising an electric power device and a protection box body of the electric power device, the electric power device is arranged in the protection box body, at least one airflow ejector is installed in the protection box body, an air outlet nozzle of a jet flow nozzle of the airflow ejector corresponds to the surface of the electric power device, and the jet flow nozzle is in a wedge shape. Jet air generated by the airflow ejector efficiently and uniformly performs heat dissipation, dehumidification and dust removal on the electric power device, so that the purposes of saving air consumption, reducing energy consumption, preventing electric leakage and short circuit of electric appliances, reducing power loss, prolonging the service life of the electric power device and improving the safety and operation stability of the electric power device are achieved.

The embodiment of the invention provides a satellite constellation system and a communication control method, the system comprises a plurality of load satellites which are in inter-satellite communication connection, and each load satellite comprises a comprehensive electronic subsystem, a communication navigation subsystem, an attitude and orbit control subsystem and a power supply and distribution subsystem. During an on-orbit task, a spaceborne computer of the comprehensive electronic subsystem can obtain information of a current task stage, calculates communication target parameters according to a communication mode corresponding to the current task stage, and generates an attitude adjustment instruction based on communication attitude parameters corresponding to the communication target parameters; and controlling the attitude and orbit control subsystem to adjust the inter-satellite communication module and / or the ground communication module to a communication attitude associated with the azimuth information. According to the system, data processing and communication processes can be dispersed to a plurality of load satellites through inter-satellite communication, and the communication attitude requirement of the inter-satellite communication process is automatically adapted, so that the problem of low timeliness of the satellite system data processing and communication processes is solved.

The invention discloses a coordination control method for energy storage and a flexible multi-state switch in a power distribution network system, and relates to the field of power supply and distribution. The hierarchical control mode is adopted to coordinate the energy storage system and the flexible multi-state switch; the coordination control layer performs working mode selection and switching in a networking operation mode by a centralized controller according to the feeder load power, the charge state of a storage battery, the operation state of each transformer and the position and the number of feeder faults; the control strategy of the flexible multi-state switch can be changed among a constant DC voltage control strategy, a constant power control strategy and a droop control strategy; the control strategy of the storage battery can be switched among constant-current charging control, floating charging control and constant-voltage control; and the feeder load in the equipment control layer can also realize a load switching control strategy. By adopting the coordination control method, the power supply reliability and the power quality of the system can be improved.

The invention provides a high-voltage power supply and distribution system for an electric vertical take-off and landing aircraft, and belongs to the technical field of power supply and distribution regulation control systems, and the system comprises a main bus bar module which is used for the current collection and distribution of an energy storage battery and a ground DC bus high-voltage power supply, and is provided with a fuse for overload cut-off; the output bus bar module comprises six mutually-independent motor load output channels and two mutually-independent high-voltage output channels, and each motor load output channel supplies power to the two symmetrically-arranged motors at the same time and is used for distributing 12 motor loads and 2 high-voltage output loads; the power-on buffer module is used for power-on buffer of 12 paths of motor loads and restraining power-on impact current; the self-locking control module has a motor load output control self-locking function, and can keep normal output of motor load current under the condition that the monitoring unit fails; and the monitoring unit module is used for monitoring the input voltage, the output voltage and the load current, and performing power-on buffer control and high-voltage contactor self-locking control on the motor load.

The invention discloses a power supply and distribution control system based on a virtual power plant, and relates to the technical field of power distribution systems. The system comprises five core modules: a digital twin simulation control closed loop module constructs a complete closed loop of data acquisition, simulation calculation, control execution and model iteration, and realizes real-time synchronization of a physical system and a digital mirror image and accurate issuing of a control instruction; the multi-agent source-load-storage optimization module improves the source-load-storage collaborative scheduling efficiency through distributed agent collection and reinforcement learning; the multi-scene energy storage adaptive control module generates a scene-based energy storage strategy based on meteorological, load and electricity price multi-dimensional perception and model prediction control; and the multi-type energy storage ratio linkage module realizes multi-type energy storage cooperative operation based on an energy storage characteristic database and scenarized weight optimization. All the modules work cooperatively, the system response speed, the control precision and the power supply stability are effectively improved, and the system is suitable for industrial parks and other complex power supply and distribution scenes.

The embodiment of the invention discloses a power distribution network line loss clustering characteristic analysis and anomaly identification method, and relates to the technical field of power supply and distribution system operation and maintenance. The method comprises the following steps: collecting multi-time-period line loss data of a power distribution network line, and constructing a line loss calculation model; zero mean value unit variance standardization processing is adopted to balance each feature so as to avoid the situation that the clustering process is dominated due to the fact that the factor value range of some features (such as current) is large. Initial clustering center selection is carried out by introducing a periodic oscillation mutation strategy and a good point set principle, and the rationality and clustering effect of an initial clustering result are optimized. In the clustering center optimization process, dynamic adjustment is carried out in combination with an improved snow ablation algorithm, so that the convergence and accuracy of the algorithm are improved. And researching the dynamic change and distribution rule of the line loss data in time and space dimensions through space-time analysis, and carrying out anomaly identification on the line loss data based on a clustering result.

The invention relates to the technical field of power electronics and power supply and distribution, and discloses a data center AC / DC power distribution system input and output voltage and current monitoring method, which comprises the following steps: deploying an intelligent sensing unit with edge computing capability at each monitoring node, sampling according to a basic frequency, and extracting effective values, harmonic distortion rates, differential change rates and other characteristics of voltage and current in real time; judging that the system is in a steady state, a quasi transient state or a strong transient state according to the multi-stage dynamic threshold value, and respectively executing feature abstract uploading, local high-frequency backtracking or collaborative full-waveform synchronous acquisition; and the central server classifies and stores the data, constructs a state evolution model, and dynamically optimizes threshold parameters. The system comprises an intelligent sensing unit, a central monitoring server and an industrial Ethernet link. According to the method, the steady-state data transmission quantity is remarkably reduced, transient details are completely captured, and adaptive adjustment of the monitoring sensitivity is realized.

The invention relates to the technical field of intelligent remote control, and discloses a multi-machine collaborative management and control method for coal mine fully-mechanized excavation, fully-mechanized mining, main transportation, auxiliary transportation, production assistance, power supply and distribution and other fixed scenes, and the method comprises the following steps: S1, system architecture design: constructing a multi-machine collaborative management and control system, by means of a special multi-element sensing and control module configured for each equipment unit in a fixed scene, a central control system serves as a coordination center, and autonomous operation is achieved by means of an edge computing center control module of the central control system under the condition of communication interruption or delay; s2, real-time sensing and data fusion: integrating deployed sensors in existing equipment, and collecting equipment operation condition states and environment information; a self-learning function and a distributed data storage mechanism are introduced into the edge computing device, so that self-adjustment and optimization of each device in a complex coal mine environment are realized, local data sharing and self-adaptive control can still be realized even under the condition of communication interruption or delay, and continuity and safety of operation are ensured.

The invention belongs to the technical field of power supply and distribution, and particularly relates to a hydrogen-lithium hybrid power supply multi-mode uninterruptible power supply system, a control method and a storage medium, and the system comprises a hydrogen energy power supply vehicle, a lithium battery energy storage unit, a power conversion subsystem PCS, a voltage phase tracking module, a static change-over switch STS and a control unit. According to the invention, through cooperative work of the lithium battery and the hydrogen fuel cell, millisecond-level rapid switching during commercial power failure is realized, continuity of load power supply is ensured, and the problem of starting delay of a traditional hydrogen energy system is solved. Intelligent cooperative control of hydrogen energy and lithium batteries is realized according to different scenes, energy distribution is optimized, and the operation efficiency and stability of the system are improved. The control unit monitors the operation state of each part of the system in real time, calculates the dynamic efficiency and grid-connected / off-grid stability control quantity of the system, generates a control signal according to the dynamic efficiency and the grid-connected / off-grid stability control quantity, coordinates the work of each part, and ensures that the system can operate efficiently and stably in various operation modes.

The invention discloses a short-circuit current limiting and short-circuit recovery transient voltage control device and method for an aviation three-stage power generation system, and the device comprises a three-stage power generator, a power generator controller, a current sensor, a voltage and current collection module, and an asymmetric half-bridge excitation control circuit. Collecting the output current iL and voltage UL of the generator through a digital processor of the generator controller; when short circuit occurs, the given voltage USet of the voltage regulating loop is linearly reduced in a piecewise mode according to the relation between the iL and a preset threshold value, so that the generator works in a constant power interval; and when the short circuit is recovered, closing the upper / lower power tubes of the asymmetric half-bridge excitation control circuit according to the relationship between UL and a preset threshold value in a grading manner, and triggering a negative-pressure follow-current mode of a main excitation winding of the generator controller to quickly extinguish the field. The method can adapt to different generators without adjusting hardware circuit parameters, has no motor ablation risk during short circuit, has transient voltage less than 350V after short circuit recovery, has no power supply interruption in the whole process, has response delay less than 1ms, and greatly improves the safety and robustness of an aviation power supply and distribution system.

The invention provides an open type avionics system for a multipurpose unmanned aerial vehicle, and relates to an unmanned aerial vehicle electronic system, the system comprises a comprehensive processing module, a navigation module, a servo module, a power supply and distribution module and a load module, and the modules realize data interaction through an interconnection bus; a protocol conversion module with standardized interfaces is further arranged between the load module and the comprehensive processing module, and the protocol conversion module is used for converting various non-standardized load interfaces into unified and standardized interfaces so as to support effective communication and data exchange between the load module and the comprehensive processing module. Based on the design ideas of comprehensive modularization, bus interconnection and interface standardization, all functional modules of an existing unmanned aerial vehicle electronic system are designed in a centralized and integrated mode, and the multipurpose unmanned aerial vehicle electronic system with high integration and interface standardization is formed.

The invention discloses a power utilization inspection task automatic generation and distribution method and system, and relates to the technical field of power supply and distribution, and the method comprises the steps: carrying out the data collection of regional nodes, building a regional node data set, carrying out the power utilization risk recognition, creating M power utilization inspection tasks, and building a first task priority; activating a backtracking extraction channel, carrying out electricity consumption information backtracking extraction, establishing M electricity consumption information sequences, and establishing a second task priority; and performing multi-agent adaptation analysis according to the first task priority and the second task priority, and establishing a power utilization inspection task distribution result. The method solves the technical problems of low task execution efficiency and slow response speed caused by dependence on manual arrangement and lack of intelligent analysis and real-time response capabilities of the power utilization inspection task in the prior art, and achieves the purposes of automatically generating the power utilization inspection task by fusing multi-source data, dynamically adjusting the task priority in combination with real-time data, and improving the efficiency of power utilization inspection. And the task execution efficiency and the response speed are improved.

The invention relates to the technical field of low-voltage power supply and distribution systems, and discloses a dual-power-supply quick switching circuit for a low-voltage power supply system, which comprises a main power supply, a standby power supply, a circuit breaker QF1, a circuit breaker QF2, a relay KA1, a relay KA2, an alternating current contactor KM1, an alternating current contactor KM2 and a load, the main power supply is connected with the circuit breaker QF1, one path of the QF1 is connected with the KM1, and the KM1 is connected with the load; the other path is connected with the KA1 from the QF1, the KA1 is connected with the KM2, the KM2 is connected with a coil of the KM1 and then connected with the zero line N, and the 1B phase line and the 1C phase line of the main power supply are further connected with the two ends of the coil of the KA1; the standby power supply is connected with the circuit breaker QF2, one path of the QF2 is connected with the KM2, the KM2 is connected with the load, the other path of the QF2 is connected with the KA2 from the QF2, the KA2 is connected with the KM1, the KM1 is connected with a coil of the KM2 and then connected with the null line N, and the 2A phase line and the 2B phase line of the standby power supply are further connected with the two ends of the coil of the KA2. When the main power supply is abnormal, the standby power supply can be quickly switched to avoid shutdown of the lower-level equipment, the standby power supply can be automatically switched after the lower-level short circuit fault is isolated, and the power supply reliability of the low-voltage power supply and distribution system is greatly improved.

The invention relates to the technical field of control, in particular to an electric power supply and distribution intelligent scheduling early warning detection method and system, and the method comprises the steps: carrying out the clustering of the daily electricity consumption of a set number of days of an electricity consumption collection unit, obtaining a plurality of clustering clusters, and enabling each clustering cluster to represent a time period electricity consumption sequence with similar electricity consumption behaviors in one day; determining all power utilization time periods based on the time period power utilization sequence of each day; a complete electricity utilization period is constructed; screening the power utilization period to obtain an effective period; calculating a first ratio and a second ratio in the effective period; the difference value between the second mean value and the first mean value is used as the power utilization margin; and calculating the ratio of the current residual electric quantity of the power utilization unit to the power utilization residual quantity, and if the ratio is smaller than a preset residual quantity threshold value, giving out an early warning of insufficient power supply of the power utilization unit. The invention aims to optimize power resource configuration by formulating an effective power management strategy so as to ensure the stability of power supply.

The invention discloses an electric energy management system and method for a multi-electric aero-engine, which are mainly suitable for comprehensive electric energy management of the multi-electric aero-engine. The system is mainly composed of a starter generator unit, a high-voltage energy storage unit, a power supply and distribution control unit and an electricity load unit. The management method comprises the steps of power supply framework initialization, starting power supply control, operation power generation switching, fault emergency processing and the like. A power supply and distribution centralized management mode is adopted, high and low voltage direct current buses are configured, all power supplies supply power to the buses, all loads take power from the buses, and the power supply and taking process is controlled by a power distribution unit. Aiming at control management of a multi-electric aero-engine power supply, an electric load and the like, reasonable, reliable and safe electric energy distribution management is performed on electrified equipment such as a starter generator, an energy storage battery, the electric load and the like through the electric energy management system, the energy conversion efficiency is improved, the weight of accessories is reduced, and the system is simple and easy to control; the engine working performance is improved.

The invention relates to the technical field of transformer substation monitoring, and discloses a power supply and distribution safety monitoring method and system for a transformer substation. The method comprises the following steps: acquiring various data in a transformer substation, and performing time synchronization calibration on the three types of data; dividing a power supply and distribution operation mode into a steady-state mode, a transient mode and an overload mode based on the calibrated data, extracting a harmonic distortion rate, a dielectric loss angle tangent value and a vibration spectrum entropy value of a current waveform in each mode, and generating an operation characteristic matrix; detecting an operation mode switching event, and calculating a characteristic offset between modes; decomposing a degradation characteristic component in the operation characteristic matrix according to a matching degree between an insulation aging stage and current dielectric loss data in a historical fault case library; coupling compensation correction is performed on the degradation characteristic component in combination with the cross influence relationship between the electrical parameters and the mechanical parameters of the equipment; and reversely tracing the abnormal signal source equipment node along the topological structure of the power supply and distribution network based on the corrected degradation characteristic component, and outputting an equipment maintenance sequence.

The invention discloses a self-adaptive switching system and method for power supply and distribution, and relates to the technical field of smart power grids, and the method comprises the steps: loading a quantum algorithm library and power grid operation data to a quantum calculation platform, carrying out the parallel processing of the power grid operation data through a quantum algorithm, analyzing the abnormal condition in a current power grid, and obtaining a switching result according to the analysis result. According to the method, the optimal power supply path and the switching strategy from the power generation equipment to the load point are optimized, the optimal solution can be quickly found when a large-scale complex power grid is processed through the quantum algorithm, and the optimal power supply path and the switching strategy are obtained. The transmission loss of a power transmission line and power generation equipment is effectively reduced, and the power supply efficiency of a power grid is improved. In addition, by introducing a time attenuation factor and a priority weight, a switching strategy is further optimized, and efficient operation of a power grid and reasonable distribution of loads are ensured.

The invention discloses a vehicle-mounted high-power power supply and distribution system and method, and the method comprises the steps: enabling one end of an engine to be provided with a transmission wheel train and a high-voltage generator during the running process of a vehicle, and enabling the output rotating speed of the engine to be improved to the rated rotating speed of the high-voltage generator through the transmission wheel train; high-voltage direct current output by the generator drives a high-voltage electric appliance to work after being subjected to voltage stabilization and filtering by the high-voltage distribution box; when an automobile is parked and a mains supply is used, alternating-current mains supply is inverted into direct-current power through the high-voltage distribution box to drive a high-voltage electric appliance to work. The defects that a traditional vehicle cannot run and cannot supply power in a high-power mode under the parking condition can be overcome, especially the technical problem of power supply under the parking condition is solved, software system adaptation development is carried out through the comprehensive technical scheme of a high-power high-voltage silicon generator, mains supply inversion, power supply filtering and the like in combination with post-stage power utilization characteristics, and the power supply efficiency is improved. And stable power supply of the air-conditioning system under running and parking conditions is ensured.

The invention discloses a reinforcement learning-based cable arrangement method and system in a power supply and distribution system, and a storage medium. The method comprises the following steps of S1, obtaining cable information, laying environment information and constraints required to be met by cable laying; s2, abstracting a bridge system into a weighted undirected topological graph; s3, calling a path planning algorithm based on reinforcement learning, and calculating an optimal cable laying path by taking a minimum comprehensive cost function including path length cost, plot ratio cost and precious penalty terms as an optimization target under the constraint that cable laying needs to be met; s4, calculating the center coordinate of each cable to be arranged in each bridge by adopting a greedy algorithm according to the optimal cable laying path, and arranging the cables according to the center coordinate; according to the method, the optimal laying and arrangement path can be planned on the premise of meeting various physical constraints of cable laying, and the method can automatically and dynamically adapt to different laying scenes.

The invention provides an over-current protection circuit of an airborne computer product, which belongs to the technical field of airborne computer power supply and distribution management and comprises a power switch and an isolation circuit used for controlling a power supply output switch of a power supply. The current sampling detection circuit is used for establishing a linear relation between the detected current and the output voltage; the signal conditioning circuit is used for conditioning an output signal of the current sampling detection circuit, and when the flowing current is 0A, the output voltage of the signal conditioning circuit is 0V; the comparison circuit is used for comparing the voltage output by the signal conditioning circuit with a preset reference voltage, judging whether overcurrent occurs or not, and outputting an overcurrent signal and closing a power output channel when overcurrent occurs; the level maintaining circuit is used for maintaining the over-current signal and preventing the over-current signal from losing efficacy; after the overcurrent fault is eliminated, the overcurrent protection signal is reset through the overcurrent protection reset signal, and the power output channel is opened again. According to the invention, the safety and reliability of airborne computer products are improved.

The invention belongs to the technical field of power supply and distribution of a data center, and provides an electrical protection method and system for power supply and distribution of the data center, aiming at the data center of a 2N power distribution architecture, electric energy parameters of two paths of external mains supply are collected and transmitted to an EMS of an energy storage system, and system charging and discharging power is controlled and adjusted through the EMS. According to the fact that the sum of the power on the two alternating current buses is larger than a set protection threshold value, the first switch device is controlled to cut off the connection between the energy storage system and the second alternating current bus, overload of a superior line or a transformer during charging or power supply switching is prevented, and in addition, through the measures of a reverse power detection device, first-path voltage loss linkage and the like, the energy storage system can be effectively protected. An external electrical protection system independent of the energy storage system is added to form dual protection, so that a dual fault superposition scene of energy storage system faults or power grid faults is effectively isolated, and the reliability of an originally designed power supply network of the data center is guaranteed.

The utility model provides an intelligent frequency conversion adjusting type electro-hydraulic actuator control system, comprising a power supply and distribution module, an input port of which is connected with an input power supply; the control module is connected with an output port of the power supply and distribution module and comprises a PLC host; the execution module is connected with the output port of the power supply and distribution module and the control module and comprises a frequency converter, a motor and an electro-hydraulic valve serving as an actuator, the frequency converter is used for adjusting the motion state of the motor, and the motor is used for controlling opening and closing of the electro-hydraulic valve; the feedback module is connected with the input port of the control module and is used for inputting a feedback signal to the control module; and the liquid level detection module is used for detecting the liquid level in the closed pipeline and sending liquid level information to the control module. The utility model has the characteristics of rigorous operation logic, short execution time, fast response and the like, and can carry out remote control and automatic control so as to realize unattended operation or few-person operation.

Y-Δ phase-shifting transformer with 14-times multiple winding output and power supply and distribution system. The high-voltage side winding is connected in Y-shape, and the low-voltage side winding includes at least one sub-winding. Each sub-winding includes 14 three-phase low-voltage phase-shifting windings connected in extended Δ. Each phase coil of the low-voltage phase-shifting winding is composed of a basic coil D1 and an extended coil Y1. The basic coil D1 is used to construct the triangular side of the phase-shifting winding, and the extended coil Y1 is used to construct the triangular extended side of the phase-shifting winding. It is characterized in that the theoretical phase angle distribution of each low-voltage phase-shifting winding of each sub-winding and the turn combination configuration of the basic coil D1 and the extended coil Y1 in each phase coil of windings with different phases are arranged according to the optimized combination data, constructing a Y-Δ phase-shifting transformer with 14-times multiple winding output, which can obtain relatively optimized harmonic elimination effect and relatively balanced output waveform, achieving harmonic elimination quality and standards not only with relative advantages but also with predictability and stability.

The present invention discloses a power supply and distribution system for a high-voltage power transformer on-site detection vehicle. The on-board mobile power supply (hereinafter referred to as "on-board power supply") is connected in parallel with the 12V DC power consumption part and the 220V AC power consumption part through the No. 1 isolating switch, the inverter power supply, and the switching power supply, and is connected in parallel with the 12V DC power consumption part through the No. 2 isolating switch; the external power supply (hereinafter referred to as "mains power") is connected in parallel with the 12V DC power consumption part, the 220V AC power consumption part, and the on-board power supply through the isolation transformer, the No. 1 isolating switch, the inverter power supply, and the switching power supply, and is connected in parallel with the 220V AC power consumption part through the No. 2 isolating switch, and is connected in parallel with the ceiling air conditioner; the automobile generator is connected in parallel with the on-board power supply through the dual battery isolation controller, and is connected in parallel with the 12V DC power consumption part through the No. 2 isolating switch. The present invention has the advantages of flexible operation, wide application, and complementary advantages.

The invention relates to the technical field of power supply and distribution systems, and particularly provides a power transmission line intelligent monitoring system and method based on the power Internet of Things and application, and the system comprises a power Internet of Things server, a detection system and an Internet of Things communication / transmission module. The method comprises the steps of performing data processing on received power equipment detection data, performing operation and maintenance coordination according to a data processing result, and performing inspection management according to an operation and maintenance coordination result. Through application of the power transmission line intelligent monitoring system based on the power internet of things, operation fluctuation generated in the operation process of power equipment is detected, intelligent early warning is performed on equipment operation risks possibly existing in the power transmission line, and the dynamic states of various power operation and maintenance work are mastered and tracked timely and quickly. The system can quickly respond to emergencies and systematically monitor and early warn micro-meteorological disasters of the power transmission line in a large range.

The invention discloses dual-power automatic switching equipment for water conservancy power supply and a control system, and belongs to the technical field of power supply and distribution. The design of the dual-power supply switch and the third-party power supply quick socket is adopted, the reliability of a hydraulic power supply system can be effectively improved, when a main power supply is abnormal, equipment can be automatically switched to a standby power supply for power supply, continuous work of the flowmeter is ensured, data missing or measurement errors caused by power failure are avoided, and the reliability of the hydraulic power supply system is improved. Due to the design of the third-party power supply quick socket, an external power supply can be quickly accessed to realize emergency power supply under the condition that double power supplies fail, problems can be found in time when the power supply state is abnormal by collecting power supply parameters in real time, and the real-time power supply state and a preset power supply priority rule are combined to realize emergency power supply. It is ensured that the main power supply is preferentially used when the main power supply is available, unnecessary power supply switching is avoided, and dynamic load distribution is carried out according to load requirements and power supply characteristics under the condition that the double power supplies are both available.