67 results about "Emergency power system" patented technology

The invention discloses an intelligent rapid emergency power supply system for monitoring high-voltage short-circuit characteristic information through an attribute method. The system comprises intelligent identification module groups X1 to X12, an intelligent controller IPo, a commercial power direct transmission branch Dt, an abnormal emergency branch Ae, a composite rapid circuit changer Cf, an intelligent storage battery unit IIU, and monitoring instruments IA and IA1-IA3. The intelligent identification module groups X1 to X12, the intelligent controller IPo, the commercial power direct transmission branch Dt, the abnormal emergency branch Ae, the composite rapid circuit changer Cf, the intelligent storage battery unit IIU, and the monitoring instruments IA and IA1-IA3. One intelligent recognition module is arranged on each of a three-phase power line of an ISPS power supply incoming line side or a commercial power direct transmission branch according to different attributes of current, voltage, harmonic wave and impedance, and is used for capturing characteristic information of high-voltage network short circuit. In intelligent power grid dispatching, the high-voltage short circuit condition is analyzed and judged and an emergency disposal scheme is determined according to combination of characteristic information attributes of all modules, according to the method, characteristic information is used for starting ISPS output end conversion in advance, and the problem that an index Tlt cannot be guaranteed when a standard ISPS is in a high-voltage short circuit state is solved; and 0.01 ms.

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 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 relates to the technical field of mine emergency power supplies, and discloses a mine emergency power supply system and method based on photovoltaic and energy storage coupling, and the system is characterized in that a photovoltaic power generation module charges an energy storage module in daily life, and carries out the coordinated auxiliary power supply in emergency; the energy storage module outputs direct current to the energy storage, current conversion and voltage boosting all-in-one machine through a direct current bus; the energy storage, conversion and boost all-in-one machine converts direct current into alternating current and supplies power to the mine emergency guarantee module; the energy management module issues a control instruction to the photovoltaic power generation module, the energy storage module, the energy storage conversion and boost all-in-one machine and the mine emergency guarantee module; the mine emergency guarantee module is connected with the alternating current of the energy storage, conversion and boosting all-in-one machine through the quick switching device to supply power to the key load; the multi-level safety protection module is connected with the energy storage module and the mine emergency guarantee module to monitor the safety state. The technical bottleneck of the current mining area energy storage system is effectively solved, and the safety, reliability, economic practicability and comprehensive energy efficiency are remarkably improved.

The invention discloses an intelligent rapid emergency power supply system (ISPS) with dual starting information, which is characterized in that intelligent identification module groups X1 and X2 for monitoring high-voltage short-circuit fault characteristic information are additionally arranged on the basis of a standard ISPS system, and the characteristic information is also taken as a basis for output end conversion, so that the high-voltage short-circuit fault characteristic information can be monitored; the output end of the ISPS is converted to have two pieces of starting information of parameter serious abnormity and high-voltage short circuit characteristics, and the system comprises an intelligent identification module group X1 and X2, an intelligent controller IPo, a composite rapid circuit changer Cf, an abnormity emergency branch Ae, a commercial power direct transmission branch Dt, parameter monitoring instruments IA and IA1-IA3, a matched switch, a matched storage battery unit and the like. According to the ISPS, under the action of dual starting information of parameter serious abnormity and short circuit characteristics, output end conversion can be started at the moment that high-voltage short circuit occurs and parameter serious abnormity information does not appear, and the power supply reliability of the ISPS is improved.

The invention belongs to the technical field of aircraft power supply system design, and discloses a high-reliability airborne equipment dedicated DC power supply system, which comprises a 1 # permanent magnet machine, a 2 # permanent magnet machine, a 1 # rectification box, a 2 # rectification box, a 1 # main bus bar, a 2 # main bus bar, a 1 # distribution box and a 2 # distribution box, the first permanent magnet machine and the second permanent magnet machine are driven by the main speed reducer to output two paths of three-phase alternating currents, and the two paths of three-phase alternating currents are transmitted to the first rectification box and the second rectification box respectively. The 1 # rectification box and the 2 # rectification box convert three-phase alternating current into 29V direct current and supply power to the 1 # distribution box and the 2 # distribution box. The 1 # main bus bar and the 2 # main bus bar respectively supply power to the 1 # distribution box and the 2 # distribution box through the fuse; the 1 # power distribution box and the 2 # power distribution box enable four paths of direct current input by the 1 # rectification box, the 2 # rectification box, the 1 # main bus bar and the 2 # main bus bar to be isolated and connected in parallel through a diode and then supply power to key electric equipment. According to the invention, the problem that the power supply demand cannot be met by the emergency power supply system is solved, and the power supply reliability of the electric equipment is greatly improved.

The application belongs to the technical field of aviation second power system, and discloses an airplane emergency power gas generating system and method based on water enhancement technology, wherein the system adopts fuel oil and high-pressure gas cylinder gas supply to combust in a gas generator, high-temperature and high-pressure gas is generated as the emergency power of the airplane; when the fuel oil and air are mixed and combusted in the gas generator, water is sprayed in the gas generator, water is used as the combustion coolant, and the compressed air amount used by the gas generator after combustion to generate unit gas is reduced. The aviation kerosene and high-pressure air are used as the fuel and oxidant, the fuel system has the advantage of good compatibility with the airplane, the compressed air amount used by the gas generator to generate unit gas is greatly reduced, the working time of the gas generator system is prolonged, the expensive catalyst is not used, and the problems of short service life of the gas generator system and high price of the catalyst of the traditional emergency power system are avoided.

An emergency power system (100) and emergency lighting dimming method are disclosed. The emergency power system (100) includes a power source (10), a phase-cut waveform generator (11, 13, 300, 310, 311, 400, 410, 411) coupled to the output of the power source (10) and arranged to provide a phase-cut waveform (FIGS. 2 and 3) to a load (12). The load may be one or more emergency lighting devices. A feedback detection module (14, 201) may be is used to monitor the voltage and / or current data supplied to the load (12) by the phase-cut waveform generator. A controller (13, 202-205) controls the phase-cur waveform generator (11, 13, 300, 310, 311, 400, 410, 411) to adjust the power level of the load (12) by modifying the phase-cur waveform based upon the monitored voltage and / or current data and reference data to achieve the appropriate dimming level.

The utility model relates to the technical field of generators, in particular to an emergency power supply system. The emergency power supply system comprises a variable frequency motor, a unit starting module, an inverter, an energy storage inverter, a starting motor, a power piece and an energy storage battery, a rotor of the variable frequency motor is in transmission connection with the power part; the output end of the variable frequency motor is electrically connected with the input end of the inverter; the unit starting module is electrically connected with the inverter, the starting motor and the energy storage battery. The inverter is electrically connected with the energy storage inverter and the power part and is in communication connection with the energy storage inverter; the energy storage inverter is electrically connected with the energy storage battery and the output end of the inverter; the starting motor is electrically connected with the energy storage battery and is in transmission connection with the power piece, and the problems that a battery is single in function and low in energy use efficiency can be solved.

The invention discloses an intelligent rapid emergency power supply system for monitoring a high-voltage short-circuit fault based on a symbol method, and relates to the technical field of power supply. The system comprises a power supply module, a monitoring module located at the input end of the power supply module and a control module connected with the power supply module and the monitoring module, and the power supply module comprises a commercial power direct transmission unit, an abnormity emergency unit and an energy storage unit which are connected in parallel. The monitoring module comprises a first intelligent recognition unit arranged on an A-phase power line, a second intelligent recognition unit arranged on a B-phase power line and a third intelligent recognition unit arranged on a C-phase power line; the monitoring module can capture characteristic information which suddenly appears on each phase of power line at the short circuit moment of the high-voltage power grid, the control module can switch the power supply mode of the output end of the power supply module according to the characteristic information, the switching time is less than 0.01 millisecond, and the power supply mode comprises a commercial power supply mode, an emergency power supply mode and an energy storage power supply mode. By adopting the system provided by the invention, uninterrupted power supply can be ensured, and the safety and reliability are improved.

This invention discloses an emergency mud treatment system for electric cementing trucks, including a power switching valve assembly. The actuator end of the power switching valve assembly is connected to a centrifugal pump drive motor and a speed control valve. The power source port of the power switching valve assembly is connected to an emergency hydraulic pump assembly and a motor-driven hydraulic pump assembly. The emergency hydraulic pump assembly is connected to an emergency power system. The outlet end of the speed control valve is connected to a stirring motor, and the outlet of the stirring motor is connected to a hydraulic oil tank. This invention also discloses an emergency treatment method for the emergency mud treatment system for electric cementing trucks. This invention solves the problem of mud not being discharged from the mixing tank during power supply failures in current electric cementing trucks, reducing the risk of equipment and property damage caused by mud solidification and improving equipment safety and reliability. Utilizing a highly integrated power switching valve assembly, it achieves power switching of the equipment's hydraulic power source in emergency situations. The pipeline is simple, occupies little space, achieves intelligent emergency mud treatment, has a simple structure, and low manufacturing cost.

This application discloses an intelligent fast emergency power supply system with a smart battery unit, relating to the field of modern power electronics technology. The system is centered on an inductive intelligent module X34 that monitors short circuits at the output terminal and a smart battery unit IIU. Its supporting architecture includes an intelligent controller IPo, a composite fast switch Cf, a mains direct transmission branch Dt, and an emergency fault branch Ae. Supporting components include monitoring instruments IA, IA1, IA2, IA3, and an output switch S2. Under the combined action of IPo, X34, and the internal switches of IIU, this system prevents the battery inverter branch from supplying power to short-circuit loads. Even if IPo experiences a temporary malfunction, there will be no failure in battery temperature control or protection. Even if the battery fails to discharge for an extended period, there will be no internal caking or scaling. Therefore, the safety and reliability of this system are unaffected by various interference factors.

The utility model belongs to the technical field of power transmission line on-line monitoring technology, and discloses a power supply emergency guarantee device for a power transmission line visualization device, which comprises a visualization power supply system and an emergency power supply system, and is characterized in that the visualization power supply system comprises a charging and discharging controller, a solar cell panel I and a storage battery; the input end of the charging and discharging controller is electrically connected with a first solar cell panel, the input end of the charging and discharging controller is further electrically connected with a storage battery, the output end of the first solar cell panel is electrically connected with the storage battery, and the output end of the charging and discharging controller is electrically connected with a camera. According to the power supply emergency guarantee device for the power transmission line visualization device, the reliability of power supply of visualization equipment is improved, the operation stability of the equipment in severe weather is supported, stable online is kept, and normal power supply of image transmission equipment is supported, so that long-term stable online of the equipment is ensured, the maintenance frequency of the equipment is reduced, and the operation and maintenance cost is reduced.

The utility model discloses a mobile security emergency power supply system, which comprises a control unit, a photovoltaic energy storage unit, a generator set unit, an intelligent switching unit, a main power distribution unit and a load unit, all the units are integrated into a container type all-in-one machine which is installed on a vehicle and used in a vehicle-mounted maneuvering mode. The mobile multifunctional emergency system has the advantages that the hybrid power station is constructed by using the light storage unit and the generator set, and is integrated with the load output equipment with various functions to form the mobile multifunctional emergency system comprehensively, so that stable and reliable emergency power and site illumination are provided for various camps quickly, and the emergency power supply efficiency is improved. The capability of the user to deal with various risks of the power supply system is effectively improved; the system has multiple power supply and consumption modes of light storage power source main use, generator set main use and fault conditions, and flexibly adapts to different load conditions and power supply equipment conditions; the device is suitable for various field conditions and application scenes such as long-term fixed use, maneuverable use and external photovoltaic power generation.

The utility model provides an emergency system and an emergency house. Relates to the technical field of emergency refuge facilities. The emergency system is applied to an emergency house. The emergency power supply system comprises a photovoltaic panel, a light storage integrated cabinet and a power generator; the photovoltaic panel and the power generator are respectively connected with the light storage integrated cabinet; wherein the light-storage integrated cabinet is arranged inside a house body of the emergency house, and the photovoltaic panel and the power generator are arranged outside the house body; the emergency basic system comprises an emergency lighting device and an emergency water supply device; the light storage integrated cabinet is further connected with the emergency lighting device and the emergency water supply device. According to the emergency system provided by the invention, the self-sufficiency capability and the survival guarantee level of the emergency house in an emergency are improved.

The invention belongs to the technical field of emergency power generation, and discloses an emergency power generation method and device, electronic equipment and a medium. The method comprises the following steps: acquiring a real-time electric energy quality parameter of the emergency power supply system for quality evaluation; when the quality evaluation result meets a preset grid connection condition, grid connection is carried out on the emergency power supply system; acquiring real-time device state parameters of the emergency power supply system to perform power supply capability evaluation calculation to obtain power supply duration of the emergency power supply system; and sending an equipment adjustment request according to the current time, the power supply duration and the predicted commercial power recovery time. In the invention, the emergency power supply system is an emergency generator car based on compressed air energy storage, the emergency generator car generates power based on compressed air, and the emergency generator car is pollution-free, low in noise and relatively low in power supply cost; whether the emergency power supply system meets the grid connection requirement or not is determined according to the quality evaluation result, the power supply time is determined through power supply capability evaluation calculation, and the reliability of emergency power supply is improved.

The invention provides an unmanned aerial vehicle charging and emergency power supply system based on an electric vehicle charging station, and the system comprises an unmanned aerial vehicle DC charging capacity checking unit which is connected with a charging / discharging gun and is used for charging an unmanned aerial vehicle or inputting the electric energy of the unmanned aerial vehicle to the system, and carrying out the active battery capacity checking of a battery of the unmanned aerial vehicle; the emergency vehicle alternating current charging unit is connected with the charging gun; the emergency guarantee alternating current output / input unit is connected with the quick wiring terminal and is used for outputting alternating current or inputting electric energy of external equipment to the system; the emergency guarantee alternating current output unit is connected with the quick wiring terminal and is used for outputting alternating current with various powers; the equipment alternating current input unit is connected to a charging station alternating current low-voltage system and is used for supplying power to the unmanned aerial vehicle direct current charging capacity checking unit, the emergency vehicle alternating current charging unit, the emergency guarantee alternating current output / input unit and the emergency guarantee alternating current output unit; and the main control unit is in communication connection with the unmanned aerial vehicle direct current charging capacity checking unit, the emergency vehicle alternating current charging unit, the emergency guarantee alternating current output / input unit, the emergency guarantee alternating current output unit and the equipment alternating current input unit. According to the invention, an unmanned aerial vehicle charging infrastructure network and an emergency shelter with a reliable emergency power supply can be rapidly formed by using the existing charging station network.

The present application discloses a floating nuclear power generation system in which an emergency power supply system is further strengthened. A floating nuclear power generation system according to the present disclosure comprises: a nuclear reactor; a turbine generator that is driven by steam generated by means of heat from the nuclear reactor; a floating body in which the nuclear reactor and the turbine generator are disposed, and that is moored offshore; and a floating body internal power supply system that has an emergency system which can feed power to prescribed nuclear reactor cooling equipment in at least a time of emergency, and a regular system which can feed power to equipment not connected to the emergency system, wherein regular power generation equipment that generates power by means of natural energy is connected to the emergency system.

An emergency power supply system comprising a hydraulic turbine (1) having a peripheral edge provided with blades or buckets (1B), said hydraulic turbine (1) being housed in a casing (2) adapted to be put under a vacuum, said casing (2) comprising or being associated with a collector (20) adapted to be put under vacuum and adapted to collect water propeled onto the blades or buckets (1B) of the turbine when generating the required emergency supply power.

The application relates to a switching device (10) for supplying a load (50) optionally in grid operation or in island operation, comprising: - a network connection (14) with a first phase conductor connection (14p) and a first neutral conductor connection (14n) for connecting an AC network (60), - an inverter connection (18) with at least two connection terminals (18p, 18p2, 18n) for connecting a bidirectional inverter (30), and - a load terminal (15) with a second phase conductor terminal (15p) and a second neutral conductor terminal (15n) for connecting the load (50), - a mains monitoring switch (11) with an actuating coil (11.1) connected to the mains connection (14) and a monostable contact (11.2) that can be actuated by the actuating coil (11.1), - an electromechanical switching unit (12) with an actuator (12.1), a first switching contact (12.2), in particular a normally closed first switching contact (12.2), and a positively guided auxiliary contact (12.6), wherein the first switching contact (12.2) is arranged in a connecting line between the first phase conductor terminal (14p) and a connection terminal (18p) of the inverter terminal (18) associated with the first phase conductor terminal (14p), and - a status terminal (16) with a connected electrical circuit (13) for signaling a state of the switching device (10). The application also relates to an emergency power system (100) with such a switching device (10) and a method for operating the emergency power system (100).

The invention relates to the technical field of auxiliary power distribution of emergency diesel generators of high-temperature gas cooled reactors, and discloses a circuit for controlling a fuel delivery pump of a diesel engine of a high-temperature gas cooled reactor nuclear power plant, which comprises the following steps of: connecting a power loss signal of a control power supply of a main fuel delivery pump with real fault signals such as thermal overload of a motor and short circuit of a power loop in parallel; and the normally open contact is connected in series with a normally open contact of a bus voltage monitoring relay of an auxiliary machine power distribution cabinet where the main pump is located, thereby realizing accurate screening of fault signals. When the auxiliary machine power distribution cabinet bus is electrified, the real fault triggers the standby pump to start; when the bus loses power, the standby pump is not triggered to start, and only the main fuel delivery pump is normally started after the bus recovers power supply. The problem that double pumps are started at the same time by mistake after the diesel generator is started to recover power supply of the auxiliary machine power distribution cabinet due to power loss of the emergency bus in the high-temperature gas cooled reactor emergency power supply system is solved, the standby function of the standby pump is guaranteed, equipment loss and maintenance cost are reduced, and the operation stability and reliability of the high-temperature gas cooled reactor emergency diesel generator set are improved.

The utility model relates to the technical field of generators, in particular to an emergency power supply system. The emergency power supply system comprises a variable frequency motor, a starting control module, an inverter, a starting motor, a power piece and an energy storage battery, the output end of the variable frequency motor is electrically connected with the input end of the inverter; a rotor of the variable frequency motor is in transmission connection with the power part; the starting control module is in communication connection with the inverter and the starting motor and is electrically connected with the energy storage battery. The inverter is in communication connection with the energy storage battery and is electrically connected with the power piece; the starting motor is electrically connected with the energy storage battery and is in transmission connection with the power piece, and the problems that the battery function is single, the load cannot be carried by instant overload of the generator, and the energy use efficiency is low can be solved.

The invention relates to the technical field of automobile emergency power supply fault detection, and discloses an automobile emergency power supply fault detection method and system, and the method comprises the steps: obtaining an original signal of a multi-dimensional parameter through a sensor network; classifying the working conditions according to the voltage and current fluctuation amplitude; the sampling frequency is adaptively adjusted according to the classification result; aiming at the enhanced data set, adopting a decision tree model to analyze a mutual influence relationship among parameters; voltage and temperature subsets are obtained from the abnormal combination identifier, and dynamic change abnormity is judged through cross validation; determining a fault type by adopting a fusion algorithm according to an anomaly judgment result; and finally, an alarm signal is sent to a vehicle control system. Through adaptive frequency adjustment and multi-parameter collaborative analysis, the accuracy and real-time performance of fault diagnosis are remarkably improved, and reliable operation of the automobile emergency power supply system is effectively guaranteed.

The invention relates to a nuclear power plant frequency modulation and emergency power supply control method and system, and the method is used for a super capacitor energy storage system, and comprises the steps: obtaining the real-time operation information of a generator; the real-time operation information comprises output frequency; determining whether the generator operates normally according to the real-time operation information, if so, entering a first mode, and if not, entering a second mode; in the first mode, the super-capacitor energy storage system is controlled to be connected with an output bus of the generator, and the super-capacitor energy storage system is controlled to be charged or discharged according to the output frequency, so that the output frequency is stabilized in a set frequency range; and in the second mode, the super-capacitor energy storage system is controlled to be connected with the emergency bus, and the super-capacitor energy storage system is controlled to supply power to the emergency bus before the emergency power supply system is started. The frequency modulation response speed of the generator can be remarkably improved, the frequency modulation duration is shortened, and the switching-in success rate of an emergency power supply system can be improved when emergency power supply is needed.

The application belongs to the technical field of aviation secondary power system, and discloses an airborne emergency power system based on N2O and an operation method thereof, wherein the system adopts fuel oil and oxygen produced after N2O decomposition to combust in a gas generator, so as to produce high-temperature and high-pressure gas as emergency power of an airplane; wherein, N2O is stored in an N2O high-pressure storage tank system, and a heat preservation device is arranged on the N2O high-pressure storage tank system to stabilize the N2O in liquid state. The application uses aviation kerosene and high-pressure and low-temperature N2O as fuel and oxidant, the fuel and oxidant system has the advantage of good compatibility with the airplane, N2O is heated and decomposed by using the impulse turbine exhaust waste heat, and the waste heat is recycled, so that the working time of the emergency power system and the system thermal efficiency can be effectively prolonged.

The utility model relates to the technical field of hot blowing snow removers, in particular to a vehicle-mounted power supply system of a hot blowing snow sweeper and a monitoring system of the vehicle-mounted power supply system, which comprises a main storage battery pack, a charging system, a vehicle-mounted power / lighting system, a vehicle-mounted instrument control system and a standby emergency power supply system, a charging module is arranged in the charging system, the charging system charges the main storage battery pack by an external power supply through the charging module, the emergency power supply system adopts a bearing vehicle storage battery, and the vehicle-mounted power / lighting system and the vehicle-mounted instrument control system supply power through the main storage battery pack or the bearing vehicle storage battery. According to the vehicle-mounted power supply system of the hot blowing snow sweeper and the monitoring system of the vehicle-mounted power supply system, the storage battery of the bearing vehicle is used as a standby emergency power supply of corollary equipment of the hot blowing snow sweeper and all electric equipment of an instrument system within limited time, so that a direct-current dual-power-supply framework is formed; and the power distribution grade requirements of domestic existing specifications and standards on important equipment are met.

An emergency power system for providing emergency power to an elevator motor / generator is disclosed. The emergency power system comprises a battery backup, a static bypass switch operatively connected to the elevator motor / generator; and a power conditioning circuit. The power conditioning circuit may comprise a first circuit for directing power from the grid to the motor / generator via the static bypass switch when power from the grid available; a second circuit for directing power from the battery backup to the motor / generator when power from the grid is unavailable; and a third circuit for directing power from the motor / generator to the battery backup when the elevator motor / generator is braking. The first circuit may comprise an AC-to-DC rectifier connected to a power grid, a DC-to-DC converter, and a DC-to-AC inverter operatively connected to the static bypass switch. As such, the first circuit is configured to operate as a power conditioning circuit, and that conditioned power supplied to the elevator motor / generator when available. When conditioned power is unavailable because the power grid is non-operational, for example, the battery backup is configured to power the elevator motor / generator via circuit including the DC-to-DC converter, the DC-to-AC inverter, and the static bypass switch.

It is easier to ensure a load size that can supply power during emergencies. [Solution] The emergency power supply system 100 is electrically connected to the power grid 90 that normally supplies power to the facility. A gas generator 111 and a power storage unit 121 are installed as emergency power supply devices. These devices can supply power in an emergency to loads 202 and 302, including household electrical appliances, within the facility that are normally supplied with power from the power grid 90, through the wiring that supplies power. The emergency power supply system 100 includes a harmonic reduction unit 140 connected to the wiring that reduces harmonic currents generated in household electrical appliances.

The invention relates to the technical field of emergency diesel generators of emergency power systems, and discloses a power supply circuit suitable for a standby emergency diesel generator set of a high-temperature gas cooled reactor nuclear power plant, and the power supply circuit is additionally provided with a standby emergency diesel generator which is connected to a working bus through an outlet circuit breaker. A standby diesel generator is connected with a transfer bus through an interconnection switch, the transfer bus is connected to two original emergency buses through feeder switches, and the two emergency buses are additionally provided with wire inlet switches led from the transfer bus, so that when any one original emergency diesel generator fails and is unavailable, the standby diesel generator can quickly replace the original emergency diesel generator to execute an emergency power supply function through switching operation; retreating of the unit operation mode is avoided, and the power generation economy, operation stability and accident safety of the nuclear power plant are improved.

The utility model discloses a charging pile emergency power supply system capable of being monitored and controlled in real time, which comprises a central processing unit (CPU), a communication system, a mains supply monitoring system, a power supply switching system, a voltage stabilizing and reducing system, a hardware restarting system, a charging control system and a super capacitor voltage equalizing system, the mains supply monitoring system is used for monitoring current signals of mains supply, the power supply switching system is used for switching circuits and connecting the mains supply or a standby power supply into the circuits, and the voltage stabilization and voltage reduction system is used for ensuring stable charging of the standby power supply. The charging pile is restarted by using the hardware restarting system in the standby power supply state, so that the charging pile ends the current order, uploads the charging data and unlocks the charging pile gun head, thereby solving the problem that the gun head is locked when the commercial power is cut off.