1064 results about "Mains electricity" patented technology

The invention relates to an intelligent charging method and system based on light and wind complementation and intelligent energy storage. According to the method, dynamic optimized charging is realized through multi-source data collaborative decision, and the method comprises the following steps: firstly, collecting real-time data such as light-wind power generation, energy storage SOC, charging load and commercial power supply, analyzing a wind-solar power generation complementary relationship and calculating a real-time complementary coefficient; a dynamic weight distribution scheme of light wind and commercial power is generated in combination with the commercial power state, and an energy storage charging and discharging instruction is generated by fusing peak and valley electricity prices and energy storage efficiency optimization; and based on the adjusted energy storage output power, comprehensively considering the charging demand and the vehicle battery state, and dynamically distributing the power of the charging pile through the charging priority. By adopting the method, energy complementation, economic scheduling and charging demand management can be combined, the utilization rate of renewable energy sources is effectively improved, and the charging cost is reduced.

The invention relates to the technical field of intelligent power supplies, in particular to an intelligent power supply for an unattended station. Comprising a multi-source power supply scheduling unit; an intelligent energy storage management unit; a double-link communication unit; the double-link communication unit is used for constructing a multi-redundancy communication link of wired, wireless and power line carriers, and the double-link communication unit is based on link quality data, adopts an automatic switching strategy to guarantee data transmission continuity, preprocesses monitoring data by using an edge side data clustering algorithm, and realizes offline data caching and transmission flow optimization. Through a multi-source energy dynamic scheduling strategy, according to photovoltaic real-time output, commercial power time-of-use electricity price and load electricity demand, power supply paths of photovoltaic, commercial power and a storage battery can be dynamically optimized, the consumption proportion of clean energy is improved, the dependency degree of high-cost commercial power is reduced, a complex energy structure of photovoltaic, commercial power and storage battery multi-energy complementation is effectively adapted, and the energy utilization rate is improved. And power supply flexibility is enhanced.

The invention discloses an elevator control system with an electricity-saving quantity calculation function, which relates to the field of elevator control and comprises an energy-saving control module, a first electric energy sampling module, a second electric energy sampling module, a third electric energy sampling module, a fourth electric energy sampling module, a fifth electric energy sampling module, a battery module, a conversion module and an auxiliary power supply module, the mains supply and the battery module are used for supplying power to the auxiliary power supply module, the auxiliary power supply module supplies power to the energy-saving control module and the conversion module, the alternating-current side of the conversion module is connected with the second electric energy sampling module connected with the mains supply, and the direct-current side of the conversion module is connected with the battery module; the third electric energy sampling module is arranged between the joint of the conversion module and the battery module and the battery module, the fifth electric energy sampling module is arranged between the joint of the conversion module and the battery module and each elevator, and the fourth electric energy sampling module is arranged between each elevator and the mains supply; the first electric energy sampling module is arranged between the auxiliary power supply module and the commercial power. According to the invention, the saved total electric quantity can be calculated.

The invention discloses an electric power control method based on a diesel generator, commercial power and photovoltaic grid connection. The method comprises the following steps: acquiring operation data of commercial power, a diesel generator and photovoltaic-energy storage through an energy management system, constructing a multi-target dynamic optimization model, and distributing power by taking the lowest comprehensive operation cost, the highest power supply reliability and the minimum carbon emission as targets; the power analysis and regulation unit adopts a double-loop mechanism of outer-loop Kalman filtering prediction compensation and inner-loop model prediction control, synchronizes the voltage, frequency and phase of the side to be connected with the grid and the power grid side, and smoothly switches the power change rate of each energy source in the process through a self-adaptive sliding mode control strategy; and the grid-connected switching unit intelligently pre-judges the grid-connected switching opportunity by using a long short-term memory (LSTM) network and fuzzy logic fusion model. According to the invention, the energy utilization efficiency and the power supply stability are improved, multi-energy intelligent dynamic regulation and control are realized, the comprehensive operation cost of the system is effectively reduced, and reliable power supply under complex working conditions is ensured.

The invention relates to the field of new energy technology and power electronics, and discloses a photovoltaic diesel generator energy storage hybrid off-grid and grid-connected household energy storage system, which comprises a data acquisition and state monitoring module for acquiring photovoltaic, diesel generator, energy storage, load and commercial power states in real time and generating system state parameters; the central control and decision module generates a control strategy containing an operation mode and an energy scheduling instruction; the energy flow and conversion execution module executes energy conversion and flow; the seamless switching control module realizes non-impact switching between modes; the self-adaptive safety protection module dynamically adjusts protection parameters; and the emergency response and recovery module executes black start and active recovery in an emergency state. According to the invention, through the unified central control and decision-making module, photovoltaic, diesel generator, energy storage and commercial power scheduling logics are integrated to form a collaborative energy management core, and the system can carry out global optimization on energy flow in grid-connected and off-grid modes according to a preset priority principle.

The invention discloses a multifunctional gearbox system adopting mechanical energy for power generation, which is characterized in that the mechanical energy for power generation comprises a mechanical wheel, a multifunctional gearbox and a generator; the mechanical wheel is formed by rotating a wheel shaft, a rim body and the rim body in a wheel groove; an intelligent braking device is mounted on the mechanical wheel; the multifunctional speed changing box is a gear speed changing box; the multifunctional gearbox has a driving motor power input function, a mechanical energy input function and a gearbox output function; the power supply of the driving motor is mains supply, and provides power for the multifunctional gearbox to start the mechanical wheel and the generator and maintain the rotation of the mechanical wheel.

The invention discloses a dynamically scheduled solar energy and mains supply dual-mode energy storage street lamp system, belongs to the technical field of new energy and intelligent power grids, and aims to solve the technical problems of how to realize dynamic distribution of energy storage and power supply and how to perform energy-saving scheduling on street lamp power supply. Comprising a photovoltaic power generation module, an energy storage module, a mains supply access module, a weather prediction module, an intelligent controller, an electricity price time-sharing module, an LED lighting module and a dual-mode energy storage control platform. Time-of-use electricity price table data, a photovoltaic electric energy estimated value corresponding to a future time period and an actual electricity consumption estimated value serve as influence factors, solar power supply and commercial power supply are distributed and dispatched through a decision tree based on the influence factors and a predefined dual-mode energy storage function strategy, and the brightness of an LED lamp is regulated and controlled.

The invention provides an intelligent rapid emergency power supply system for monitoring high-voltage short-circuit characteristic information through a group method, and relates to the field of power electronic technologies and uninterruptible power supplies, intelligent identification module groups X1-X27 used for monitoring short-circuit fault characteristic information of a high-voltage power supply network are additionally arranged in a standard ISPS, and the intelligent identification module groups X1-X27 are grouped according to attributes of the characteristic information; the characteristic information from each intelligent identification module is used for controlling the rapid conversion of the standard ISPS output end, so that the output end conversion index under the high-voltage short-circuit working condition can also meet Tlt; the time is 0.01 ms; the system comprises the intelligent identification module group, and an intelligent controller IPo, a composite rapid circuit changer Cf and an abnormal emergency branch Ae which are related to the intelligent identification module group, and also comprises a commercial power direct transmission branch Dt, monitoring instruments IA, IA1-IA3, an intelligent storage battery unit IIU and other matched components or units which are necessary for a standard ISPS.

The invention relates to the technical field of power supply management, and discloses an intelligent management method and system for an uninterruptible power supply, and a storage medium. The method comprises the steps that the actual power of a load end is updated every first duration, and when a power supply end starts to supply power, the actual power is corrected based on the load volatility to obtain required power; starting at least one uninterruptible power supply based on the required power, so that the load utilization rate of the power supply end is within a standard range; defining the started uninterruptible power supply as a first power supply, obtaining the residual electric quantity and the electric quantity attenuation rate of the first power supply at intervals of second duration, and determining a high-risk power supply based on the residual electric quantity and the electric quantity attenuation rate; if the idle uninterruptible power supply exists in the power supply end, the idle uninterruptible power supply is online to replace the high-risk power supply, and otherwise, the load equipment is turned off; after the commercial power is recovered, the uninterruptible power supply in the power supply end is charged based on the charging priority, and sustainable balance between charging safety and the service life of equipment is achieved.

The invention discloses a shared suspension type charging pile for a new energy automobile, and relates to the technical field of charging piles. The shared suspension type charging pile for the new energy automobile comprises two transverse moving mechanisms, a longitudinal moving mechanism is fixedly arranged at the lower ends of the two transverse moving mechanisms, a charging mechanism is arranged at the upper end of the interior of the longitudinal moving mechanism in a rolling mode, the charging mechanism comprises a supporting base, and an upper cover plate is fixedly arranged at the upper end of the supporting base. An electric lifting frame is fixedly arranged at the lower end of the supporting base, an input cable is fixedly arranged on one side of the interior of the electric lifting frame, the input cable is connected to a mains supply, a lifting frame is fixedly arranged at the lower end of the electric lifting frame, and a protection cable is fixedly connected between the lifting frame and the interior of the electric lifting frame. The charging mechanism can be flexibly moved to adapt to the charging port, so that the charging process is simplified, the cable can be prevented from being dragged vigorously, the service life of the cable is prolonged, the maintenance cost is reduced, and the use convenience and stability are improved.

The invention provides an intelligent rapid emergency power supply system for monitoring high-voltage short-circuit characteristic information by a centralized method, relates to the field of smart power grids and uninterruptible power supplies, and is mainly characterized in that characteristic information monitoring module groups Xa1 to Xa3, Xb1 to Xb3, Xc1 to Xc3 and a shared wide-range switch MS are additionally arranged at phases A, B and C of a commercial power direct transmission branch of a standard ISPS; the ISPS is used for capturing, processing and transmitting characteristic information of a high-voltage short circuit, and starting output end conversion in advance according to the characteristic information, so that a conversion index Tlt is ensured; the time is 0.01 ms. The system further comprises an intelligent controller IPo, a composite quick circuit changer Cf and an abnormal emergency branch Ae which are related to feature information, and further comprises a mains supply direct transmission branch Dt, monitoring instruments IA, IA1-IA3, an intelligent storage battery unit IIU, related switches and other components which are necessary for the ISPS system. At the moment of high-voltage short circuit, the feature information of each feature information monitoring module group is sent to the IPo after being processed by the MS in a centralized manner, and the IPo controls the Cf to convert in advance.

The invention provides a power supply strategy optimization method for condensation control and a ring main unit, and belongs to the technical field of power supply, and the method specifically comprises the steps: determining the coincidence probability of the ring main unit and humidity intervals of different fluctuation types in a future preset time period according to the humidity monitoring data of the ring main unit, when the coincidence probability is utilized to determine that the distribution data of the coincidence risk time period in the future preset time period meets the requirement, the temperature change condition of the ring main unit under the weather data of the current date is taken as the basis, and the temperature change condition of the ring main unit is determined on the basis of the coincidence probability of the coincidence risk time period and humidity intervals of different fluctuation types; according to the method, the adjustment demand type of the humidity adjustment device of the ring main unit is determined, and the power supply processing strategy of the temperature adjustment device of the photovoltaic device at different monitoring temperatures is determined by using the adjustment demand type and the humidity monitoring data, so that the reliability of the control processing of the condensation risk is improved, and the use of the commercial power is reduced.

The embodiment of the invention provides a power supply method, electronic equipment and a storage medium, and belongs to the technical field of communication. Load information of a power failure time period is obtained, a target value of battery discharge cut-off capacity is determined according to the duration of the power failure time period and the load information, and power is supplied to main load equipment through a battery power supply module in the power failure time period until the battery remaining power of the battery power supply module reaches the target value of the battery discharge cut-off capacity. And switching to supply power to the main load equipment through the fuel oil power supply module and charging the battery power supply module through the fuel oil power supply module. According to the scheme of the embodiment of the invention, the optimal discharging or charging depth can be dynamically measured and calculated; reasonable parameters are set to coordinate the battery and the oil engine to supply power when the mains supply breaks down, so that the fuel economy of the oil engine is improved, pollution discharge is reduced, and meanwhile the service life of the battery and the service life of the oil engine are prolonged.

The invention discloses an anti-countercurrent system based on V2G equipment and a control method, and the system comprises at least two charging and discharging modules which are connected to one side of a power line, and the other side of the power line is connected to a power grid; the charging and discharging module comprises a first bidirectional electric meter and a V2G charging pile. One end of the V2G charging pile is connected with the power line through the first bidirectional ammeter, and the other end is connected with the charging terminal. The bidirectional main electricity meter is connected between the power line and the power grid; the contactor is connected between the bidirectional main ammeter and the power line. The anti-countercurrent control module is in communication connection with the bidirectional main electric meter, the contactor, the first bidirectional electric meter and the V2G charging pile; according to the invention, a virtualized anti-countercurrent control architecture is adopted, any V2G charging pile or cloud server is used as an anti-countercurrent control module, a traditional hardware controller is replaced by existing equipment computing power, global power regulation and control are realized based on data provided by the bidirectional main ammeter and the first bidirectional ammeter, and the system deployment cost and complexity are significantly reduced.

The invention provides a shared power bank leasing equipment control method and shared power bank leasing equipment, and the method comprises the steps: determining the priority of a power bank connected to the shared power bank leasing equipment in the operation process of the shared power bank leasing equipment, and monitoring whether the commercial power is cut off or not; and controlling the charge pal connected to the shared charge pal leasing equipment to reversely supply power to the shared charge pal leasing equipment according to the priority under the condition that the mains supply is monitored to be powered off.

The invention discloses a power load switch driving circuit of an electric energy meter. The power load switch driving circuit comprises a step-down rectifying circuit, a voltage stabilizing circuit, an energy storage circuit, an MOS tube switching circuit and a booster circuit, one end of the step-down rectifying circuit is connected with the mains supply, the other end of the step-down rectifying circuit is electrically connected with the voltage stabilizing circuit, the output end of the voltage stabilizing circuit is electrically connected with the MOS tube switching circuit, the energy storage circuit and the output control circuit, and the MOS tube switching circuit is electrically connected with the booster circuit. The invention further discloses an electric energy meter power load switch driving method. The technical problems that an existing driving circuit cannot perform reliable action of a load switch and is complex in structure are solved.

The invention discloses an intelligent power supply system for an integrated energy cabinet of a communication base station, and the system comprises a power supply parameter collection module which obtains parameters such as an input voltage fluctuation sequence and multipath load current data; the power supply feature extraction module performs fusion analysis on the parameters to generate a power supply feature vector set; the decision space construction module presets a power supply strategy knowledge base and a feature vector set, and establishes a power supply decision space index structure; the power supply decision module matches the optimal power supply strategy combination and outputs a first power supply control instruction set; the power supply execution module drives the power distribution unit to execute load power supply switching and storage battery charging and discharging control. The system comprises an energy pool module, an integrated photovoltaic device, a commercial power device and the like to realize access and dynamic distribution; the anti-countercurrent control unit ensures the energy flow safety; the zero-loss switch array regulates and controls an electric energy path to improve the efficiency; the power supply execution module drives multi-power-supply switching, security isolation and path switching, supports commercial power peak clipping, light stacking and off-peak power utilization, and improves the power supply reliability and energy efficiency of the base station.

The invention provides a charging and discharging control method and a power supply controller for a new energy motor home, and belongs to the technical field of new energy motor homes. In order to solve the problem that a power supply controller for a new energy motor home cannot provide alternating current while charging, the invention provides a charging and discharging control method which comprises the following steps: responding to a vehicle charging port complete connection signal, synchronizing a bidirectional vehicle-mounted charger and a mains supply phase, after the phase synchronization, the power supply of the alternating current electric appliance in the vehicle is switched from the inversion power supply of the bidirectional vehicle-mounted charger to the commercial power supply; in response to a charging permission instruction, charging a vehicle power battery through the bidirectional vehicle-mounted charger; and obtaining the total power of the in-vehicle alternating current electric appliance, and adjusting the charging power of the bidirectional vehicle-mounted charger or the total power of the in-vehicle alternating current electric appliance based on a first threshold value. According to the invention, the problem of simultaneous working of charging and inversion is solved, and the situation of interruption and restart of the electric devices in the vehicle in the charging and inversion switching process is ensured not to occur.

The invention provides a grid-connected and off-grid mode switching control method and device and an energy storage parallel operation system, and relates to the technical field of energy storage systems.The method comprises the steps that if the energy storage parallel operation system is not connected to mains supply within a preset voltage range, the energy storage parallel operation system is controlled to enter an off-grid mode; based on the first voltage characteristic information of the energy storage converter host, controlling the energy storage converter slave to adjust the first voltage parameter; if the electric supply in the preset voltage range is connected to the energy storage parallel operation system, controlling the energy storage converter host to enter a tracking pre-synchronization mode from an off-grid mode, controlling the energy storage converter host to track the electric supply and sequentially adjust the second voltage parameter, and controlling the energy storage converter host to track the energy storage converter host and sequentially adjust the third voltage parameter; and controlling the energy storage converter host and the energy storage converter slave to enter a grid-connected mode at the same time. According to the technical scheme, it is ensured that the voltage parameters of the host and the slave are consistent, parallel operation circulating current oscillation can be avoided to a great extent, and the possibility of system faults is reduced.

The present application discloses a power supply and backup network of a communication device. The network includes a medium-low voltage power distribution system, a high voltage battery backup power system, a power distribution system, and a high-voltage direct-current (HVDC) bus system, where the medium-low voltage power distribution system is connected to the power distribution system by the HVDC bus system; the high-voltage battery backup power system is bypassed on the HVDC bus system; the medium-low voltage power distribution system is configured to provide HVDC power for the power distribution system by the HVDC bus system by using input mains power and oil energy backup power; the high-voltage battery backup power system is configured to provide HVDC backup power for the power distribution system by the HVDC bus system; and the power distribution system is configured to distribute, to a connected electrical device, the HVDC power.

The invention discloses a double-voltage adaptive rectification PFC (Power Factor Correction) circuit structure and an electric flame stove. The double-voltage adaptive rectification PFC circuit structure comprises an EMI (Electro-Magnetic Interference) filtering unit, a voltage doubling rectification unit, a full-bridge rectification unit, a circuit switching control unit, a startup protection unit and a power factor correction unit. According to the circuit switching control unit, through conversion of full-bridge rectification or voltage-multiplying rectification, adaptability to commercial power of two different voltages is achieved; according to the power-on protection unit, when 220V mains supply is input, after the circuit voltage is stabilized, the relay RLY2 is completely switched on, and soft start protection is achieved; according to the invention, the MOS tube Q1 / Q2 is alternately connected and disconnected in a time sequence, so that the inductor L2 stores energy or discharges, the capacitor C22 is charged or discharged, the power factor correction unit outputs stable high-voltage electricity to a rear-end circuit or a load, when the MOS tube Q2 is connected, the resistance is zero, the superposed high-voltage electricity is transmitted to the rear-end circuit when the potential of the inductor L2 discharges, and low-loss energy conversion is realized.

The present invention discloses a UPS power supply with an automatic switching function, which relates to the field of power supply. The UPS power supply with an automatic switching function comprises: a mains power supply module, which is used to introduce mains alternating current (AC) power and supply it to a step-down rectifier filter module and a load working module; a step-down rectifier filter module, which is used to convert the AC power into DC power and supply it to a switching and storage module; and a switching and storage module, which is used to store electric energy for a battery when DC power is input, and to control the load working module to use the mains AC power as a power supply. When there is no DC power input, the present invention has the following beneficial effects: the present invention determines the current power state of the battery through a power determination module, and feeds it back to a single-chip microcomputer working module, which controls the working condition of the load through a power supply control module, so that the output power of the battery matches the working condition of the load, thereby ensuring the normal working condition of the main power-consuming equipment of the load and extending the normal working time of the main power-consuming equipment.

The invention relates to the technical field of machine room environment regulation and control, in particular to a communication base station intelligent energy-saving window control design method and system, and the method comprises the steps: obtaining and classifying base station source load data, setting energy-saving window parameters and an off-network strategy, monitoring a power supply state, and cooperatively controlling temperature control equipment in combination with electric quantity temperature difference. According to the method, the thermodynamic state is digitalized by calculating the outdoor cold source potential energy gradient and the indoor thermal load cumulative acceleration and combining the enthalpy difference allowance so as to accurately evaluate the natural cold source potential; the optimal ventilation opening degree and the fan rotating speed are matched through multi-dimensional feature clustering, so that the condensation risk is strictly restrained according to dew point approximation deviation while the heat dissipation efficiency is guaranteed, and in addition, a dual-target evaluation function in an off-grid scene is constructed to solve a non-dominated solution set of endurance time and thermal safety. A dynamic protection threshold value is generated; and when the commercial power is interrupted, a control strategy is adaptively adjusted according to the real-time load and the environment temperature, so that the off-network life cycle of the base station is maximized, and core equipment is ensured to always run within a safe temperature boundary.

The invention discloses a megawatt-level optical storage and charging system bidirectional power coordination control method and system based on a network construction technology, and relates to the technical field of power system control. The method comprises the following steps: initializing a multi-port energy router of the megawatt-level optical storage and charging system, and configuring control parameters of a virtual synchronous generator (VSG); a mains supply signal and the maximum mains supply power of a mains supply power grid system connected with the megawatt-level optical storage and charging system are obtained regularly, a grid-connected mode signal is generated if the running state of a mains supply power grid is normal, an off-grid mode signal is generated if the running state is abnormal, and network construction type bidirectional power coordination control is executed according to the signals. According to the invention, switching between the grid-connected mode and the off-grid mode can be rapidly and accurately carried out according to the real-time operation state of the power grid, and stable connection and cooperative operation of the system and the power grid are ensured in the grid-connected mode; in the off-grid mode, the independent and stable operation of the system after the system is separated from the power grid is guaranteed, and the adaptability of the system to different power grid working conditions is improved.

The invention relates to the technical field of power system energy storage equipment testing, in particular to a small and medium-sized industrial and commercial energy storage cabinet twin-trawling testing system which comprises a main loop, a secondary control loop and an anti-countercurrent detection unit, the main loop comprises double testing loops and four sets of alternating current contactors, and multi-machine twin-trawling testing frameworks such as one-to-one, one-trawling-two and one-trawling-three can be flexibly combined; independent switching between grid connection and grid disconnection is supported, the secondary control loop comprises a button with a lamp and a grouping reset button, and the countercurrent prevention detection unit detects the energy flow direction in real time through an intelligent electric meter and a current sensor and has a mains supply charging function. According to the test system, through a double-loop parallel test architecture and a multi-machine flexible combination design, the system can be synchronously butted with multiple energy storage cabinets to carry out parallel test, the test efficiency can be improved, and a safety system with anti-countercurrent detection, rapid mode switching and precise control protection guarantees the test safety; the arrangement of the standardized terminal and the button with the lamp simplifies the operation difficulty, and reduces the test threshold.

Provided are an uninterruptible power supply (UPS), a method and an apparatus for soft starting the UPS, and a controller. In the UPS, an inverter circuit is provided with three-phase output terminals, and two output terminals of a pre-charge circuit are electrically connected to output terminals of any two phases, respectively. The UPS charges a bus capacitor through an energy storage operation and a freewheeling operation, so that a voltage of the bus capacitor is greater than a peak value of a mains power. When the mains relay is powered on, a voltage of an end of the mains relay that is electrically connected to the mains power is lower than the voltage of the bus capacitor. Due to limitation of a conduction direction in a rectification circuit, no inrush current occurs, thereby reducing arcing of relay contacts and improving stability of the UPS during a power-on process.

The utility model relates to the technical field of gas water heaters, and discloses a gas water heater which comprises a whole machine shell, a gas inlet pipe and a gas outlet pipe. The main board is used for supplying power to the electric components; the power supply is used for supplying power to the mainboard; the smoke exhaust pipe comprises an inner-layer smoke pipe and an outer-layer smoke pipe, the inner-layer smoke pipe comprises a thermoelectric power generation sheet, the thermoelectric power generation sheet is connected with a power supply, the inner side of the inner-layer smoke pipe forms a smoke exhaust channel, the smoke exhaust channel is communicated with the whole machine shell, the outer-layer smoke pipe surrounds the inner-layer smoke pipe, an airflow channel is formed between the outer-layer smoke pipe and the inner-layer smoke pipe, and the outer-layer smoke pipe is provided with an air inlet hole; the gas water heater does not need to be externally connected with a mains supply, during power failure, electricity stored by the power source can be supplied to the main board, the main board supplies electricity to all electric components, the gas water heater can be normally ignited for use, and in the normal use process of the gas water heater, the gas water heater is not prone to being damaged. And the power generated by the thermoelectric power generation sheet continuously charges the power supply.

The invention provides an uninterruptible power supply and a soft start method and device thereof, and a controller, in the uninterruptible power supply, an inverter circuit is provided with a three-phase output end, and two output ends of a pre-charging circuit are correspondingly and electrically connected with any two-phase output ends of the inverter circuit instead of being directly and electrically connected with a direct-current bus; when the uninterruptible power supply charges the bus capacitor through the pre-charging circuit, the bus capacitor can be charged through energy storage operation and follow current operation of the inverter circuit, so that the voltage of the bus capacitor is larger than the peak value of the mains supply, and when the mains supply relay is powered on, the voltage value of one end, electrically connected with the mains supply, of the mains supply relay is lower than the voltage of the bus capacitor. Due to the limitation of the conduction direction of the rectifying device in the rectifying circuit, impact current does not occur any more, the arc discharge phenomenon of a relay contact caused by the impact current is reduced, and the stability of the uninterruptible power supply in the power-on process is improved.

The invention relates to the technical field of power system emergency power supply, in particular to an uninterruptible power supply control method, system and device for an emergency power supply vehicle and power supply equipment, and the method comprises the steps: connecting a plurality of medium-voltage power supply vehicle switch cabinet public busbars through cables, connecting the leading-out ends of the medium-voltage power supply vehicle switch cabinet public busbars to a mains supply end, and then starting a high-voltage power generation vehicle; collecting electrical parameters output by a mains supply end and a medium-voltage power supply vehicle generator set, and adjusting the output parameters of the generator set after comparison; when the commercial power end breaks down, if the adjusted output parameter is consistent with the first power supply data or the error is within the preset range, grid connection is performed after a first time length is automatically delayed, the commercial power end is withdrawn, and the medium-voltage power supply vehicle takes over the load and monitors the commercial power; and after the commercial power recovers and operates stably, adjusting output parameters of the generator set, confirming that the output parameters are consistent with the commercial power parameters, automatically delaying for a second time length, quitting the generator set, and re-taking over the load at the commercial power end. According to the invention, the requirements of emergency rescue and disaster relief, large-scale temporary power supply and other scenes on quick response and efficient parallel operation can be met.

The invention discloses a light storage and charging integrated unmanned aerial vehicle nest and a control method thereof. The invention relates to the technical field of unmanned aerial vehicles, and solves the problems of low working efficiency and limited deployment caused by single energy supply mode and insufficient environmental adaptability of an existing unmanned aerial vehicle nest. The light storage and charging integrated unmanned aerial vehicle nest comprises an environment sensing system, an automatic cabin door system, a take-off and landing system, a control system, a photovoltaic power generation system, an energy storage system and a charging system. The charging system comprises an automatic charging module and an uninterruptible power supply. The photovoltaic power generation system is utilized to provide green electric energy for the unmanned aerial vehicle nest by integrating the light storage and charging integrated energy unit, so that the dependence on the traditional mains supply is reduced, and the carbon emission is reduced; through cooperative control of the environment sensing system, the automatic cabin door and the take-off and landing system, safe take-off and landing and energy supply of the unmanned aerial vehicle in a complex environment are achieved, and the deployment problem in a remote area or a scene with insufficient power grid coverage is solved.