127results about How to "Achieve uninterrupted power supply" patented technology

The invention discloses an undisturbed uninterruptible power supply device, which comprises power access terminals, a rectifier, an inverter, an intelligent charger, an energy storage device, a direct supply switch and an undisturbed switching device, wherein a first path of the power access terminals is connected with a group of switching units in the undisturbed switching device through the direct supply switch, a second path of the power access terminals is connected with another group of switching units in the undisturbed switching device through the rectifier and the inverter, and a third path of the power access terminals is connected with the intelligent charger; the intelligent charger charges and stores energy for the energy storage device at a low load period of the power grid; the energy storage device outputs direct current electric energy to the inverter when the input voltage of the inverter is reduced; and the undisturbed switching device is switched in an undisturbed mode between two groups of switching units and outputs an alternating current power supply to a power output terminal. The power supply device can realize high-quality high-precision uninterruptible power supply, the electricity load is not disturbed in the power supply process so as not to cause shutdown, and the uninterruptible power supply of the load is realized.

The invention discloses an electric railway section post automatic passing over of neutral section system and a control method thereof, and relates to the field of electric railway traction power supply. Pantograph recognizers are arranged on sectionalizers close to power supply arms. Load switches, thyristor switches and current transformers are sequentially connected in series and then connected to the two ends of the sectionalizers in parallel together with resistors and standby switches. The output ends of the pantograph recognizers, the current transformers and a voltage transformer, the trigger ends of the thyristor switches and the operation ends of the load switches and the standby switches are connected with a control unit. After the first thyristor switch is turned off due to current zero, the second thyristor switch is turned on to achieve current zero crossing point instantaneous switching from the first power supply arm to the second power supply arm, so that the power supply of a train is instantaneously switched from the first power supply arm to the second power supply arm, and uninterruptible power supply is achieved. The high-voltage high-resistance first resistor and second resistor work independently or together, and both can restrain balance current and the potential transient process. The system is mainly used for train continuous electricity passing over of neutral section.

The invention discloses a multi-path input alternating / direct current (AC / DC) hybrid power supply. The output end of a main power supply is connected with a rectifying bridge; the output end of each spare power supply is respectively connected with a rectifying bridge; the output ends of all the rectifying bridges are connected in parallel, wherein the positive output ends of the rectifying bridge are connected with the input end of a live line of an AC / DC power converter; and the negative output ends of the rectifying bridge are connected with the input end of a zero line of the AC / DC power converter. The power supply has the advantages of needing no additional switcher to control the switching of the main power supply and the spare power supply, realizing the power supply with high cost performance, reducing conversion time, realizing uninterrupted power supply, strengthening the reliability of the power supply, realizing hot spare function and leading the main power supply and the spare power supply to have dual effects; a mode with a plurality of rectifying bridges is adopted to expand the input voltage range; the input voltage can be alternating current with different frequencies and different phases, or one alternating current, one direct current, and even the two are direct current input.

The invention discloses an intelligent cleaning robot for a photovoltaic power station, and belongs to the field of an obliquely-laid photovoltaic panel cleaning device. The invention aims to providea self-powered cleaning device capable of automatically cleaning an obliquely-laid photovoltaic panel on time. The intelligent cleaning robot structurally comprises a frame, a rotatable brush roll, transmission shafts, rotatable walking wheels and a drive device, wherein the rotatable brush roll and the transmission shafts are mounted on the frame, the rotatable walking wheels are mounted on the two ends of the transmission shafts, and the drive device is arranged on the frame, and intelligent cleaning robot also comprises a power supply assembly which is arranged on the frame, limit sensors and a guide mechanism which is mounted on the lower end of the frame. The drive device can drive the transmission shafts to rotate to realize walking of the walking wheels and walking of guide wheels,and can drive the brush roll to rotate to realize cleaning of the brush roll; the limit sensors at the head end and the tail end of the preset travel can be triggered to drive the walking wheels to walk in the preset travel; and the power supply assembly is used to supply power to the driving device, the limit sensors and controllers.

The invention discloses a flexible AC / DC area, which comprises an EMS and a plurality of areas, wherein each area is internally provided with an AC / DC converter; an AC incoming line of each AC / DC converter is connected to a distribution transformer low-voltage side of the corresponding area; DC outgoing lines of the AC / DC converters of all areas are interconnected; and the EMS collects real-time electrical parameters and operating status of the areas, monitors the AC / DC converters in the areas and adjusts control modes and power flow adjustment targets of the AC / DC converters. The invention further discloses a corresponding scheduling control strategy. The scheduling control strategy can realize the effect that the flexible AC / DC area operates in operating modes such as power constraint, fault isolation, fault current limiting, AC supporting, AC transfer and DC transfer, improves the controllability, operation flexibility and power supply reliability, can optimize power output of the areas during power flow adjustment, and improve the efficiency of the areas.

The invention discloses a wind, light and hydrogen storage complementary uninterrupted power supply system. The power supply system comprises a wind power generation system, a photovoltaic power generation system, a control system, an inverter system, an energy storage battery system, a hydrogen fuel cell standby power generation system and a hydrogen production system. A part of electric energy generated by the wind power generation system and the photovoltaic power generation system is regulated and controlled by the control system, direct current is converted into alternating current through the inverter system, the alternating current can be used for supplying power to different loads of alternating current and direct current, redundant electric energy charges the energy storage battery system, and after the energy storage battery system is fully charged, excess electric energy enters the hydrogen production system to produce hydrogen; hydrogen produced by the hydrogen production system is injected into the hydrogen storage tank for storage; and meanwhile, the energy storage battery and the hydrogen fuel cell standby power generation system serve as two standby power supplies of the system, continuous power supply of the system under the extreme condition without wind and light power generation can be guaranteed, the safety and reliability of system operation are improved, and uninterrupted power supply is achieved.

The invention provides a hybrid inverter with the uninterruptible power supply function. The hybrid inverter with the uninterruptible power supply function comprises a transducer, a bidirectional transducer, a bus, a bidirectional inverter, a controller, a first switch, a second switch and a third switch. One end of the first switch, one end of the second switch and one end of the third switch are connected, a first port is led out from the other end of the first switch, a second port is led out from the other end of the second switch, a third port is led out from the other end of the third switch, the first port is connected with alternating-current output of a hybrid inverter body, and the second port and the third port are used for being connected with a power grid and a load respectively; one end of the transducer is connected to a new energy power generation unit, the other end of the transducer is connected with the bus, one end of the bidirectional transducer is connected to an energy storage unit, the other end of the bidirectional transducer is connected to the bus, one end of the bidirectional inverter is connected with the bus, and the other end of the bidirectional inverter is connected with the first port. When one of the power grid and the inverter breaks down, only one switch is needed for operation and the responding speed is high.

The invention relates to a self-generating device for a freight train safety monitoring system, and aims at converting mechanical energy of axle rotation into electric energy capable of supplying electricity to a monitoring device, so that active monitoring of the safe driving state of a freight train becomes feasible. The self-generating device comprises an axle and a wheel, wherein the wheel is arranged on the axle; a bogie side frame is arranged at the outer side of the axle; a dustproof plate seat groove on the axle is arranged between the inner side of the bogie side frame and the outer rim of the wheel; a side frame groove is formed in the end surface, toward the running front, of the bogie side frame; a wedge block of which the size is consistent with the internal shape of the groove is embedded into the side frame groove close to the lower part; the outside of the wedge block is fixed to the bogie side frame by a hoop I; a rotating shaft-type generator is fixed at the outer side of the wedge block through a hoop II; a rotating shaft of the generator extends towards the wheel direction; a generator driving wheel is arranged at the end part of the rotating shaft; a transmission belt is connected between the generator driving wheel and the dustproof plate seat groove; and an AC power output by the rotating shaft-type generator is stored into a power storage unit after being processed by a circuit unit.

The invention discloses a solar energy and commercial power complementary power supply which consists of a solar-cell panel (1), a complementary charging controller (2), a UPS (Uninterrupted Power Supply) inverter (3) and a storage battery (4), wherein the complementary charging controller (2) is respectively and electrically connected with the solar-cell panel (1) and commercial power supply (6); the complementary charging controller (2) is also respectively and electrically connected with the UPS inverter (3) and the storage battery (4); the UPS inverter (3) is respectively and electrically connected with the commercial power supply (6) and the complementary charging controller (2); and the UPS inverter (3) is also respectively and electrically connected with an electrical appliance (5) and the storage battery (4). The solar energy and commercial power complementary power supply has the functions of quick charging, energy saving, environmental protection, no noise and capabilities of reverse connection preventing protection, overcharging protection and over-discharge protection, can be charged by adopting solar energy / or commercial power, can ensure that a battery can be really charged fully and cannot be damaged, has the characteristics of less heating, low loss and high efficiency and cannot damage any elements of an electrical appliance after being used for a long time.

The invention relates to a mobile phone uninterruptible power supply system and a power supply method thereof. The mobile phone uninterruptible power supply system comprises a submachine battery and a mother block battery; a power supply switching circuit and a charging switching circuit are connected with the submachine battery and the mother block battery; the power supply is switched between the submachine battery and the mother block battery through the power supply switching circuit; and the charging is switched between the submachine battery and the mother block battery through the charging switching circuit. The mobile phone uninterruptible power supply system and the power supply method thereof can enable a user to automatically switch the batteries under the situation that the normal work of a mobile phone is not affected when the power of the battery is lower and can not be used or the battery has sudden power failure, thereby avoiding the phenomena of shutdown, disconnection, and the like under the situation that the battery voltage of the mobile phone is insufficient, realizing the uninterruptible power supply, and prolonging the working time of the mobile phone.

The invention relates to a power supply system for a photovoltaic and power grid interactive direct current air conditioner. The system is characterized by comprising a photovoltaic battery panel, a twin-channel independent MPPT photovoltaic tracking module and a direct current frequency conversion module, wherein the photovoltaic battery panel is used for converting solar energy into direct current electricity and provides the direct current electricity to the twin-channel independent MPPT photovoltaic tracking module; the twin-channel independent MPPT photovoltaic tracking module is used for boosting the direct current electric output by the photovoltaic battery panel and providing to a direct current air conditioning frequency conversion panel; and the direct current frequency conversion module is used for converting the voltage of the power grid into the direct current electricity and providing the direct current electricity to the direct current air conditioning frequency conversion panel. The system provided by the invention has the advantages that by changing the power supply mode of the direct current air conditioner in the prior art, the power supply function of a photovoltaic preferred power grid complementation is realized without a storage battery and a selector switch; the photovoltaic electric energy and the power grid work in parallel, so that the direct current air conditioner is continuously powered.

The invention discloses an automatic power supply switching control device of a transformer. The device comprises a first controller and a second controller, the first controller and the second controller are connected in a wireless mode, the first controller and the second controller are identical in structure, the first controller is used for controlling a first breaker, the first breaker is connected with a first power supply, the second controller is used for controlling a second breaker and the second breaker is connected with a second power supply. According to the automatic power supply switching control device of the transformer, when a power supply line in a double-power-supply power system is powered off or breaks down, a high-voltage switch on the line is quickly switched off, the connection between the line and a user is cut off, meanwhile, the other line is started and supplies power to the user in a wireless transmission method and uninterrupted power supply is achieved. The device has the advantages of being convenient to install, high in anti-interference capacity, reliable in operation and the like.

The invention discloses an energy supply method and an energy supply system for an outdoor advertising board real-time monitoring system. The energy supply method is characterized by including the following steps of: 1, setting an outdoor advertising board real-time monitoring system; 2, setting an energy supplying device, wherein the energy supplying device is connected with the outdoor advertising board real-time monitoring system in the step 1 by an energy supply control device; 3, arranging a photosensitive sensor, a wind energy sensor, a fog density sensor and a controller in the energy supply control device in the step 2; 4, the energy supply controller comprehensively comparing illumination data, wind sped data and fog density data according to real-time data information fed back by the photosensitive sensor, the wind energy sensor and the fog density sensor, to judge which one is the optimal energy supply mode in current environment, and output a corresponding control signal to the energy supply device to control the operation of the energy supply device, thus achieving the energy supply to the outdoor advertising board real-time monitoring system. The invention also discloses an energy supply system implementing the method.

The invention discloses an emergency communication host with internal and external communication functions. The emergency communication host comprises a host case, a talkback button, a talkback handle, a power circuit, a host internal and external communication circuit and a talkback handle communication circuit, wherein the power circuit comprises a rechargeable battery, an isolated single-end flyback switching power buck circuit, a power switching circuit, a battery charging circuit, a battery protection circuit, a battery voltage detection circuit, a non-isolated Boost circuit, a linear voltage stabilizing circuit and an extension voltage supply control circuit; the host internal and external communication circuit comprises a GSM module, an SIM card seat, a GSM antenna, a watchdog circuit, a reset circuit, a voice signal processing circuit, a distress signal detection circuit, a handle on-hook detection button circuit, a buzzer circuit, a low battery capacity indication circuit and a GSM network signal indication circuit. The host is convenient to install and use, high in voice response speed, high in communication quality, high in working reliability and capable of realizing 24-hour emergency calls.

The invention discloses a networking method for an emergency communication network for a mining area and a communication system for the mining area. Due to the facts that each downstream node carries out communication by selecting an upper-level node which is the shortest in path and the strongest in signal receiving, and the emission power of each downstream node is gradually reduced to be at passable lowest level, the communication network with low power consumption can be established flexibly and rapidly; due to the fact that the multi-radio-frequency communication mode is adopted, the problem of mutual interference between terminal access and a network cascade channel is effectively solved, the network connection rate is increased and the continuous transmission capacity of comprehensive data services is improved. Therefore, a high-quality scheme is provided for establishment, maintenance and use of the low-power-consumption emergency communication network for the mining area, powerful communication support is provided for emergency rescue of accidents in the mining area.

The invention provides a ship tail end power distribution system. The system comprises a power network used for power transmission and an information network used for managing a regional power distribution system, a digital control mode is adopted, the power flow of all branches or ports is accurately controlled, the power scheduling function is optimized, the simultaneous parallel power supply ofmultiple paths of power sources is achieved, and a power supply mode is converted from passive power distribution to active power distribution; by connecting an electric energy interconnection deviceand port equipment thereof and communicating with a ship energy management system and a comprehensive platform management network, the accurate guarantee and reasonable distribution of the electric energy in the area are effectively performed as required, and the fusion of the energy flow and the information flow is realized.

The invention relates to an uninterruptible automatic-switchover control system for a photovoltaic power supply and an electric supply. When the control system is started, whether an electric supply system is normal or not is firstly judged, and if the electric supply system is normal, a photovoltaic power generation system is kept in a disconnection state; if the electric supply system is judged to have fluctuation and a fluctuation range exceeds a preset value, emergency accidents possibly happen, the control system disconnects the electric supply system, the photovoltaic power generation system is started, and an emergency power supply is switched on; if the electric supply system is judged to be in a power-off state, the control system disconnects an electric supply grid, an uninterruptible power system UPS and a hospital internal grid are still in a switch-on state, power is stilled supplied to the internal grid, the control system starts a switchover switch at the same time, and the photovoltaic power generation system is switched on. The uninterruptible automatic-switchover control system effectively integrates the photovoltaic power generation system, the electric supply system and an emergency power supply system, when the electric supply is suddenly powered off or emergency faults occur, the photovoltaic power generation system can be automatically switched over within a safety time to supply power, and therefore uninterruptible power supply of the important medical care devices of hospitals is achieved.

The invention discloses a ceaseless power-supplying circuit and an electronic product in the technical field of power-supplying circuits. The ceaseless power-supplying circuit includes a power-supplying control circuit, an electric-potential setting circuit, a voltage comparison circuit, a first-cell connection circuit and a second-cell connection circuit. The power-supplying control circuit is used for providing the real-time voltage value of a first cell. The electric-potential setting circuit is used for setting a switching voltage value. The voltage comparison circuit is used for comparing the real-time voltage value and the switching voltage value so as to obtain an output signal. The first-cell connection circuit is used for connecting or disconnecting the connection of the first cell and the electric device according to the output signal. The second-cell connection circuit is used for connecting or disconnecting the connection of a second cell and the electric device according to the output signal. The ceaseless power-supplying circuit is capable of enabling the second cell to supply power to the electric device when the real-time voltage value of the first cell is smaller than the switching voltage value so that ceaseless power supplying is realized for the electric device.

The invention discloses a double-end power supply structure applicable to a low-voltage distribution network with direct current microgrid access. A first power distribution cabinet and a second power distribution cabinet are connected through a dual-power-supply automatic transfer switch (ATS); the low-voltage buses of the first low-voltage power distribution cabinet and the second low-voltage power distribution cabinet are connected through a soft normally open point (SNOP); a direct current microgrid is connected through the direct current side of the SNOP; and the SNOP is connected with the dual-power-supply ATS in parallel. By adoption of the double-end power supply structure, the following technical problems can be solved: the low-voltage parallel power supply system comprising the direct current microgrid in the prior art is instable in alternating current system frequency and has reactive power-caused loss; the power supply may suffer from a reverse-power operating condition caused by influences from values of a power supply voltage, phase, equivalent impedance, an impedance angle, a load, a power factor and the like; and furthermore, the service life and the like of the ATS are influenced by deformation of a mechanical switch contact due to frequent switching of the conventional ATS.

The invention discloses a locomotive auxiliary power supply circuit and a power supply method, the auxiliary power supply circuit comprises a current collector I, a current collector II and an auxiliary inverter I, the current collector I and the current collector II are connected with the input side of the auxiliary inverter I, and auxiliary loads of a locomotive comprise a first auxiliary load and a second auxiliary load; the second auxiliary load is connected with the output side of the auxiliary inverter I; the auxiliary power supply circuit further comprises a charger, a standby power supply, an auxiliary inverter II and a network control unit, the input end of the charger is connected with the auxiliary inverter I, the input end of the standby power supply and the input end of the auxiliary inverter II are electrically connected with the output end of the charger, and the output end of the auxiliary inverter II is electrically connected with the first auxiliary load. Uninterrupted power supply of important auxiliary loads such as an air conditioner can be achieved, the important auxiliary loads such as the air conditioner continuously work without power failure when the locomotive passes through a power-free area on a third rail, the use failure rate of the important auxiliary loads such as the air conditioner is reduced, the comfort degree of drivers and passengers is improved, and driving safety is guaranteed.

The invention relates to an electric locomotive power supply circuit. The electric locomotive power supply circuit consists of an inversion circuit, an isolation circuit and a rectifying output circuit, wherein the input end of the inversion circuit is connected to an intermediate direct-current loop of a locomotive traction circuit, when a locomotive passes by a phase splitting area, kinetic energy of the locomotive can be converted to electric energy by an inverter IV1, and the electric energy can be supplied to a locomotive power supply device through the intermediate direct-current loop of the locomotive traction circuit, so that uninterrupted power supply of the passenger locomotive can be realized; moreover, a traction transformer does not need to be independently provided with a power supply winding, so that the design of the traction transformer can be simplified, and the weight of the traction transformer can be effectively reduced.

The invention discloses a mobile phone signal launching tower base station power supply system. A vertical wind driven generator is arranged at the top end of a mobile phone signal launching tower, and an electric energy output end of the vertical wind driven generator is connected with a hydrogen generator sequentially through an inverter, a rectifier and a current stabilizer, and is connected with a electricity-utilizing unit of a base station sequentially through an inverter, a rectifier and a current stabilizer; a hydrogen output end of the hydrogen generator is connected with a hydrogen storage device; the hydrogen storage device is connected with a hydrogen fuel battery; and an electric energy output end of the hydrogen fuel battery is connected with the electricity-utilizing unit of the base station. In the mobile phone signal launching tower base station power supply system disclosed by the invention, electric energy generated by the vertical wind driven generator can directlysupply power for the base station, and can also be used for producing hydrogen, when wind of the vertical wind driven generator is insufficient and / or the vertical wind driven generator can not normally work, the hydrogen fuel battery supplies power for the base station, thus uninterrupted power supply to the base station is realized, and power supply cost is lowered because electricity is generated by using renewable energies such as wind energy, solar energy and the like.

The invention discloses an energy storage system for charging an electric vehicle. The energy storage system comprises a power supply network, wherein the power supply network is connected with a charger with an energy storage device; the charger with the energy storage device is connected with the electric vehicle and comprises a charger body which is connected with the power supply network and the electric vehicle; the charger is also connected with the energy storage device; and the energy storage device is controlled through a micro control unit. The energy storage device is added to the front end of an existing direct-current charging system; when the power network is powered off, the electric energy of the energy storage device is input into the direct-current charging system, so that uninterruptible power supply of an electric vehicle charging system is achieved; when the power network is normal, the electric energy is directly input into the direct-current charging system from a bypass; and meanwhile, when the energy storage device is short of electricity, the control unit transmits a signal and a switch at an input end of the energy storage device is turned off, so that the target of charging the energy storage device is achieved.

The invention discloses a switching control method and device for a master-slave inverter parallel system, the master-slave inverter parallel system comprises a plurality of inverters, each inverter is correspondingly provided with an AC output switch and a control panel, the output ends of the plurality of inverters are respectively connected to the same AC side common bus through the AC output switches, and the control panels of the inverters are sequentially connected into a ring through transmitting ends and receiving ends; the switching control method comprises the following steps: carrying out output voltage harmonic content detection on all inverters before the parallel system is started, and controlling the inverters with abnormal output voltage to automatically exit from the parallel system; according to the number of the inverter with normal output voltage, finishing the setting of a master machine and a slave machine; under the condition that the host computer breaks down, notifying the adjacent slave computer through level signal overturning of the control panel of the host computer so that the slave computer is automatically switched to the host computer; the device and the method have the advantages that an effective inverter output voltage self-checking means is provided, and the operation reliability of the parallel system is guaranteed.

The invention discloses a data center efficient power supply system. Energy storage circuits are equipped for all server nodes, parallel power supply is adopted for each server node to power the datacenter, in case of power failure, the power supply system of a data center server can be ensured to run continuously, and uninterrupted power supply of the data center is realized; in addition, a power conversion link of the data center efficient power supply system realizes the primary power conversion only through a module power supply circuit, therefore, compared with the power supply system inthe prior art, the data center efficient power supply system of the whole data center is simplified, safe and reliable, and the power supply efficiency of the system is also greatly improved.

The invention provides an uninterruptible power supply UPS device which comprises an uninterruptible power supply UPS branch, a bypass and a controller, wherein the UPS branch is in parallel connection with the bypass; the UPS branch comprises a rectification unit, an inversion unit and a storage battery; the input end of the rectification unit is connected with an alternating current power supply; the input end of the inversion unit is connected with the output end of the rectification unit; the output end of the inversion unit is connected with a load; the storage battery is jointed between the output end of the rectification unit and the input end of the inversion unit; the bypass comprises a bypass switch; the two ends of the bypass switch are respectively connected with the alternating current power supply and the load; the controller is connected with the bypass switch, the rectification unit and the inversion unit; the controller is used for controlling the rectification unit and the bypass switch to switch on and the inversion unit to switch off when the alternating current power supply is normal; or the controller is used for controlling the inversion unit to switch on and the rectification unit and the bypass switch to switch off when the alternating current power supply is abnormal. The UPS device provided by the invention is capable of guaranteeing the cruising power of the UPS device and supplying high reliability of the uninterruptible power supply of the UPS device.

The invention discloses a wiring circuit for a UPS bypass standby power supply. The wiring circuit comprises a first UPS, a second UPS, a main circuit power supply line and a standby power supply line, wherein the main circuit power supply line and the bypass power supply line supply power to the first UPS and the second UPS respectively. First UPS output and second UPS output form UPS parallel connection output sequentially through parallel connection of a first UPS output connection indicating lamp and a second UPS output connection indicating lamp and through parallel connection of a first UPS output connection breaker and a second UPS output connection breaker. The UPS parallel connection output supplies power to a load. A manual bypass input circuit is connected with a second UPS bypass power supply. A manual bypass output circuit is connected with the UPS parallel connection output. A manual bypass connection breaker is arranged between the manual bypass input circuit and the manual bypass output circuit. According to the wiring circuit, a UPS power supply output circuit is connected with a mains supply line, and therefore two power supply modes are effectively combined, uninterruptible power supply between the UPSs and the mains supply is achieved, and electric power supply can be switched and kept standby between the circuits of the two power supply modes.

The invention relates to a battery box UPS (uninterruptible power supply). According to the invention, a direct current main power supply outputted through a USB interface line after carrying out voltage reduction, rectification and filtering on the mains supply and an alkaline battery or a battery standby power supply in an electric equipment battery box form a set of battery box UPS system through a power supply management / switching circuit and a battery box contact piece sleeve device. When the power is interrupted, the battery standby power supply is connected automatically by the power supply management / switching circuit so as to supply power; and when the power is recovered, the battery power supply is disconnected automatically by the power supply management / switching circuit, and the USB interface line main power supply is connected. The advantages are that the battery box UPS is convenient and simple to use, and everybody can realize quick assembly and disassembly; the battery box UPS is particularly suitable for electric appliances such as a household gas cooker and a water heater which are not provided with a dedicated external power supply interface so as to realize uninterruptible power supply; sufficient powerful current of the external power supply can also repair a fault of insensitive startup of many electromagnetic valves, the reliability of the electric equipment in a severe environment is improved, and a lot of undeserved maintenance cost can be saved for electric appliance users; and the battery box UPS is suitable for both urban and rural areas.

The present invention relates to a loop closing control method for the loop closing switch of a power distribution network. The output power of the distributed power generation on at least one side of the loop closing switch is adjusted, and the access power of a load on at least one side of the loop closing switch is switched and adjusted. Finally, the voltage vector difference between the two sides of the loop closing switch is enabled to be smaller than a preset value. Meanwhile, the voltages of other related nodes, other than the loop closing switch of the power distribution network, are within the range of allowable values. At this time, the loop closing switch is closed. When the loop closing control cannot be realized through the adjustment of one parameter, the other parameter is adjusted to finally realize the loop closing control. Therefore, the control method is very efficient. The distributed power generation has the advantage of reactive compensation, and the flexible adjustment of loads is also realized. Therefore, the loop closing success rate of the loop closing switch of the power distribution network is improved, so that the uninterrupted power supply to important loads is realized. Meanwhile, the investment on traditional power generation power requirements and other reactive power compensation equipment is reduced.

The invention provides a hybrid inverter with the uninterruptible power supply function. The hybrid inverter with the uninterruptible power supply function comprises a transducer, a bidirectional transducer, a bidirectional inverter, a bus, a controller, a first switch and a second switch. One end of the first switch and one end of the second switch are connected, a first port is led out from the other end of the first switch, a second port is led out from the other end of the second switch, a third port is led out from the middle of the two switches, the first port is connected with alternating-current output of a hybrid inverter body, and the second port and the third port are used for being connected with a power grid and a load respectively; one end of the transducer is connected to new energy power generation units such as a photovoltaic power system, the other end of the transducer is connected with the bus, one end of the bidirectional transducer is connected to an energy storage unit, the other end of the bidirectional transducer is connected to the bus, one end of the bidirectional inverter is connected with the bus, and the other end of the bidirectional inverter is connected with the first port. When one of the power grid and the inverter breaks down, an important load still conducts power supply and interruptible power supply is achieved.