91results about How to "Continuous and stable power supply" patented technology

The invention discloses an active power distribution network multiple-fault restoration strategy by taking renewable energy intermittence into consideration. The active power distribution network multiple fault restoration strategy includes the steps of establishing an active power distribution network multiple-fault staged restoration strategy model to set priority for the active power distribution network power supply resources with restoring maximal power-off loads and retaining the island stability as a goal, providing a two-stage scheduling strategy for a two-stage model, solving the active power distribution network multiple-fault staged model trough an algorithm combining a depth-first searching algorithm and improved bacteria colony chemotaxis (DBCC), and using matlab 7.10 for simulation. The method divides a first-aid repair process into two stages according to time sequence, an active power distribution network multiple-fault staged restoration strategy model is established to make a power supply resource scheduling strategy, so that the key power-off loads can be restored rapidly, the total economic loss caused by fault can be reduced, and the stability of island power supply can be ensured. The matlab 7.10 is used for simulation to verify that the method can rapidly restore the power-off loads, and effectively reduce total economic loss.

The invention relates to the field of surveying and mapping equipment, in particular to a surveying and mapping instrument adjusting device for engineering. The device comprises a horizontally arranged supporting mounting plate, wherein a storage battery is horizontally arranged at the lower side of the supporting mounting plate, a supporting mounting cylinder is vertically arranged at the upper end of the supporting mounting plate, limiting rotating grooves are formed in the edge of the supporting mounting plate, a plurality of limiting rotating columns are arranged at equal angles in cooperation with the limiting rotating grooves, the outer ends of the limiting rotating columns are all provided with rotating supporting columns, and a lifting mounting cylinder is arranged right above thesupporting mounting cylinder. The device can be subjected to multi-angle support adjustment through a turning swing supporting structure, support under a complex working environment is adapted, and asurveying and mapping instrument is always in an optimal station state; the height adjustment process of the device is stable through a lifting structure of threads and screw rods and in cooperation with a lifting guide structure; and gear engagement is used for transmission, and in cooperation with rotating coupling power supply, the angle adjustment process of the surveying and mapping instrument is accurate, and the power supply process is continuous and stable.

The invention discloses an intelligent multi-stage backup uninterrupted power van and an operation method thereof. The van is composed of a chassis, a carriage, a generator set, static changeover switches, a storage battery pack, a rectifier, an inverter, a transducer and a control system. The generator set and the first-stage static changeover switch form a first-stage backup power supply. A selective switch, the storage battery pack, a first-stage circuit breaker, the rectifier, the inverter, a second-stage circuit breaker and the second-stage static changeover switch form a second-stage backup power supply. An intelligent control system is adopted as the control system, a high-speed CAN bus monitoring system is adopted, and a load power, power factor and environment air temperature real-time detecting device is arranged. The switching between the first-stage backup power supply and the second-stage backup power supply is controlled. Host and backup circuits and switching conditions can be automatically and reasonably selected; uninterrupted electricity maintenance for large power loads is achieved through a small-capacity storage battery inversion device, and the conflict between the vehicle-mounting difficulty of a large-capacity conventional UPS power supply system and the large-power tendency of electricity maintenance requirement is remarkably eliminated.

The invention relates to a multifunctional independent power plant capable of realizing all-weather stable power supply by comprehensively utilizing various kinds of natural energy, aiming to solve the problem of power shortage of sea islands. The multifunctional independent power plant comprises a high-level reservoir constructed at a higher position, and a water turbine generator set connected with the high-level reservoir through a down pipe, wherein a wave power device for converting the fluctuating wave energy into reciprocating or rotating mechanical energy drives a water pump to supply water to the high-level reservoir; or a wind energy power device for converting the wind energy into the rotating mechanical energy drives the water pump to supply water to the high-level reservoir; or a wave power device for converting the fluctuating wave energy of waters around islands, or waters of the mainland coastal area, or inland waters into the reciprocating or rotating mechanical energy is cooperated with the wind energy power device for converting the wind energy into the rotating mechanical energy to drive the water pump to supply water to the high-level reservoir. The multifunctional independent power plant provided by the invention has the advantages of low operation cost and long service, can continuously and stably supply power without being affected by the weather, and can not only supply low-cost natural energy grid power but also co-produce various kinds of island scarce resources, such as fresh water, hydrogen gas, oxygen gas, thereby providing powerful basic resource support for marine protection and development. In addition, the multifunctional independent power plant can also be popularized in other inland surface water source area besides sea islands and mainland coastal area.

The invention provides a sea island microgrid control system and control method. The sea island microgrid control system comprises an energy storage subsystem, a photovoltaic subsystem, a wind power subsystem, a controller, a diesel generator, a first power distribution cabinet, a second power distribution cabinet and a load, and is characterized in that an energy storage converter in the energy storage subsystem is connected with a battery management system, the battery management system is connected with a battery pack, and both the energy storage converter and the battery management systemare connected with the controller; a photovoltaic array in the photovoltaic subsystem is connected with a photovoltaic inverter; a wind turbine array in the wind power subsystem is connected with a wind turbine inverter; both the photovoltaic inverter and the wind turbine inverter are connected with the controller; the energy storage converter, the photovoltaic inverter and the wind turbine inverter are all connected with the first power distribution cabinet, and both the first power distribution cabinet and the diesel generator are connected with the second power distribution cabinet; and theload is connected with the controller through an electric meter. The sea island microgrid control system can balance wind-solar power generation and energy storage, and provides a continuous and stable power supply for the load on the island.

The invention provides a bird repelling device structure and a special mounting rod thereof. Tapered holes are formed in the left and right sides of a fastening bolt on a lower arm of a U-shaped base respectively and large-opening ends of the tapered holes are formed downwards; the conicity of the tapered holes is the same as that of a tapered column and the axial length is relatively small; a blind threaded hole matched with the fastening bolt is formed in the lower end face of a pressing plate; the tapered column penetrates into the tapered holes to be connected with the pressing plate through a screw; the rigidity of the U-shaped base is greater than that of the tapered column. The structure is fixed on a cross arm through the extruding effect of an upper arm of the U-shaped base and the pressing plate. The left and right ends of the pressing plate are matched with the U-shaped base through the tapered column penetrating through the tapered holes of the U-shaped base and the middle part of the pressing plate is matched with the fastening bolt; when the pressing plate is subjected to an upward acting force of the fastening bolt, the pressing plate moves upwards to drive the tapered column to move upwards, and the extrusion is formed among the tapered column and the tapered holes in the U-shaped base, so that a matching relation with a relatively great magnitude of interference is generated among the tapered column and the tapered holes; the stability after the pressing plate is positioned can be ensured and the electrified work mounting of a bird repelling device is realized by the special mounting rod.

The invention discloses an AC/DC hybrid microgrid cooperative control method which comprises four parts: a DC bus voltage layer, photovoltaic system control, energy storage system control and AC/DC interface control. The control method ensures the full use of the distributed micro-source power generation and the continuous and stable power supply of the planned important load, and optimizes the energy utilization of an energy storage battery. The cooperative control can well cooperatively control the micro source in the microgrid, reasonably allocates and utilizes the energy in an economic way, and can maintain the stability and reliability power supply of the important load in a microgrid system, the stability of DC bus voltage in the DC microgrid, and the constant frequency and constant voltage of AC-side bus voltage in a grid-connected and island stability operating condition. It is proved by facts that the cooperative control method has high feasibility and correctness.

The invention discloses a measurement and control device of a nitrogen system. The measurement and control device comprises a PLC (Programmable Logic Controller), a field control module, a remote-control module, a first power supply module and a second power supply module, wherein the PLC is controlled through the field control module to measure and control each measurement and control instrument in the nitrogen system, and the remote-control module can also carry out measurement and control; and the first power supply module and the second power supply module are respectively used for supplying power for the PLC and the remote-control module, wherein, the remote-control module is provided with upper computers being standby for each other and Ethernets being standby for each other; the PLC is provided with CPUs (Central Processing Unit) being standby for each other; and both the first power supply module and the second power supply module are provided with a standby power supply for supplying power for the device. The measurement and control device has the advantages that the measurement and the control to various signals in the nitrogen system can be realized, and the measurement and the control to the complex nitrogen system of engine plume and satellite thermal-vacuum tests are met. Through the CPUs, the Ethernets and the upper computers which are standby for each other, faults of the CPUs, the Ethernets or the upper computers are avoided to cause the measurement and the control to fail.

The invention discloses a method for restoring load based on microgrid. The load recovery method comprises the following steps: a control mode of a microgrid is set and an optical storage system is adopted to provide power for the microgrid; Establishing a mathematical model of the optical storage system; On the basis of the mathematical model of the optical storage system, aiming at the continuous power supply time; acquiring paths with minimum active power from a plurality of the microgrids to a recovery load, and obtaining a plurality of shortest recovery paths; Forming a plurality of the shortest recovery paths into a recovery tree, wherein the recovery load is the load to be recovered in the case of failure, and taking the maximum coverage load as the goal to establish a maximum coverage load model; Calculating a restoration strategy of the microgrid restoration load in the shortest restoration path according to the maximum coverage load model. The method based on micro-grid restoration load can restore the critical load first and the micro-grid restoration load based on critical load first.

The invention provides an ultrasonic liquid level recorder based on an automatic document management system and a GSM module. On the basis of a high-precision ultrasonic distance measuring module, a high-speed microprocessor, a document management chip, a high-speed NANDFlash storage chip, a GPS positioning module, a solar cell panel, a GSM communication module and a lithium battery charging and discharging management module are embedded in the recorder used for unattended liquid level data collecting in a super-long period in the field. The recorder can be conveniently placed on any position in the field, and is immediately in a liquid level collecting state when powered up. The ultrasonic distance measuring module sends liquid level data to the microprocessor at the sampling rate of 1 hertz per second in real time. Meanwhile, the document management chip is started so as to write the real-time liquid level data into the high-speed Flash storage chip. According to GPS timing time, a liquid level event document is automatically generated. Besides, the data can be sent to a specific mobile phone through the GSM module. The recorder can be widely used in a plurality of fields such as scientific investigation and industrial and agricultural production, and is low in cost, high in reliability, wide in application range and easy to popularize.

An offshore independent power supply system is provided, comprising an offshore floating platform, a solar photovoltaic module, a pumped storage power generation device and a control device. The offshore floating platform comprises an equipment mounting surface, a buoyancy body and an anchor cable. The solar photovoltaic module and the control device are fixedly installed on the equipment installation surface of the offshore floating platform; The pumped-storage power generation device comprises a water storage container, a vent pipe, an inlet pipe, a turbine, a generator, an outlet pipe, a pumping pump and a one-way valve; The inner cavity of the water storage container is communicated with the atmosphere through an air vent pipe, communicated with a pumping pump through an outlet pipe and communicated with a hydraulic turbine through an inlet pipe; Hydraulic turbine and generator drive connection; The one-way valve is installed at the water outlet of the water outlet pipe, and the water inlet of the water inlet pipe is arranged in the water body; The control device is electrically connected with the solar photovoltaic module, the pumping pump, the generator and the island electric equipment through cables. By means of the above, the present application can effectively solve the problem that the prior art cannot provide a stable power supply to the island.

The invention provides a 110KV one-battery one-charger DC system replacement method without power cut. The method comprises a step of connecting a 1# temporary storage battery pack with a 2P DC feed cabinet, wherein the 1# temporary storage battery pack is taken as a backup power supply for a 1P DC charging cabinet and the 2P DC feed cabinet, a step of remove a 3P DC storage battery cabinet I anda 4P DC storage battery cabinet II, a step of install a new DC charging cabinet at the position of the original 4P DC storage battery cabinet II and installing a new 1# DC feed cabinet at the positionof the original 3P DC storage battery cabinet I, a step of connecting a 2# temporary storage battery pack to the new DC charging cabinet, wherein the 2# temporary storage battery pack is used as a backup power supply for the new DC charging cabinet and the new 1# DC feed cabinet, a step of transferring the load of the 2P DC feed cabinet to the new 1# DC feed cabinet, and a step of installing a 2#DC feed cabinet at the position of the original 2P DC feed cabinet. According to the 110KV one-battery one-charger DC system replacement method without power cut, the new DC system can be installed at the original position without power cut, a bridge system which is a temporary DC system is omitted, therefore, the new system is directly installed as a substitution, a lot of manpower and materialresources are saved, the grid risk is reduced, and the time of power cut is reduced.

The invention relates to a power supplying and taking system of a rail vehicle, which is used for a guide rail and a rail vehicle installed on the guide rail. The guide rail is provided with a guide plate including a power supply end for supplying electric power. A power take-off terminal installed on the rail car; a first power supply device arranged on the guide plate and arranged in parallel along the guide plate trajectory, and is electrically connected with the power supply terminal. The first power taking device is installed on the rail car and is connected with the power taking terminal, and control means for controlling contact or separation of the first power supply means and the first power take-off means, wherein the power take-off terminal contacts the first power supply devicethrough the first power take-off device to realize the connection between the power supply terminal and the power take-off terminal. Aiming at the problems of the existing products, the invention provides a power supply and power retrieval system of a rail vehicle which can maintain a stable power supply.

The invention belongs to the field of cutter state monitoring and specifically discloses a cutter state monitoring system based on electromagnetic induction and a radio frequency identification technology. The system comprises a connecting device, a power supply device, an induction device and a data transmission device, wherein the connecting device is used for fixation; the power supply device comprises a power supply circuit board fixed on a machine tool main shaft, an energy sending coil as well as an energy receiving coil and an induction circuit board fixed on a cutter handle, and the power supply device is used for wireless transmission of electric energy under electromagnetic induction effects; the induction device is used for monitoring cutter states; and the data transmission device comprises a radio frequency identification coil on a power supply end and a radio frequency identification coil on an induction end, and the data transmission device is used for wireless communication in a radio frequency identification mode. The system disclosed by the invention has the beneficial effects that acquisition of continuous and stable electric energy by the induction device and the data transmission device can be ensured; a lithium battery does not need to be replaced frequently; a stable data transmission circuit can be formed; and real-time and stable transmission of data collected by the induction device can be guaranteed.

The application discloses an electrostatic-piezoelectric-electromagnetic composite energy harvester, which includes a piezoelectric energy harvesting unit, an electromagnetic energy harvesting unit and an electrostatic energy harvesting unit. The electrostatic energy harvesting unit is used for generating electric energy by vibrating an upper electrode relative to a lower electrode under the trigger of high-frequency vibration generated by the surrounding environment. The energy harvester can harvest electrostatic, electromagnetic and piezoelectric energy at the same time. The electrostatic, piezoelectric and electromagnetic energy harvesting units are optimized. Compared with an energy harvester with a single or two energy harvesting modes, the energy acquisition efficiency and output power of the energy harvester in various environments are greatly improved.

The invention relates to a negative pressure inlet type filter membrane aerosol microorganism sampler which is composed of an inlet unit located outdoors and an outlet unit located indoors, and a dynamic device enabling outdoor gas to flow indoors is arranged between the inlet unit and the outlet unit. A detachable filter membrane type microorganism collecting device is arranged in the outlet unit, and a hydrophobic coating is arranged in the whole device, so that microorganism breeding in the use process of the device can be effectively avoided. The sampler can efficiently collect microorganisms entering indoors from outdoors, has the advantages of being small in size and easy and convenient to install, can be widely applied to microorganism collection work of various house structures, and timely provides technical support for scientific research work and public health management institutions to prevent and intervene harmful microorganisms.

The invention discloses a high temperature fermentation machine. The high temperature fermentation machine includes a bottom plate, a barrel, a stirring device, a heating device and a driving device, wherein a first support and a second support are arranged at the two ends of the bottom plate correspondingly, and the first support is higher than the second support; one end of the barrel is rotatably connected with the first support, and the other end of the barrel is rotatably connected with the second support; a feed inlet and a feed outlet are formed in one end of the cylinder body; the stirring device is arranged in the barrel and is used for stirring fermentation products; the heating device is arranged on the side wall of the barrel for heating the fermentation products in the cylinder body; the driving device is connected to the other end of the barrel for driving the rotation of the barrel and the stirring device correspondingly. According to the high temperature fermentation machine, the barrel of the fermentation machine can rotate in the fermentation process to avoid the damage caused by the stuck equipment of the fermentation products, meanwhile, the heating is uniform, the fermentation effect is better, and it is not easy to burn in an empty state; and a heating rod rotating with the barrel is powered by a collector and a collector rail, so as to avoid poor contact, the continuous and stable power supply is realized, and the energy consumption is low.

The application discloses a method, a device, and a system for monitoring robot power. The method comprises the following steps: determining status information of multiple batteries connected to a target robot, wherein the battery is used to supply power to an encoder of the target robot; judging whether the batteries can normally supply power to the corresponding encoders according to the statusinformation of the batteries; and sending a message indicating battery power failure when the batteries cannot supply power to the corresponding encoders normally. The method, the device, and the system for monitoring the robot power solve a technical problem that the conventional robot motor encoder in the related art often faces a situation in which the zero position of the encoder is lost due to the low battery power.

A village household energy-gathered efficiency-increased wind power generation system comprises N wind-gathered efficiency-increased wind generators, N being not smaller than 2, and a power distribution and supply control device, a cable and a grid-connected control device. The N wind-gathered efficiency-increased wind generators are electrically connected with the power distribution and supply control device through the cable, the power distribution and supply control device is electrically connected with a village user load and/or is electrically connected with a power grid through the grid-connected control device; each wind-gathered efficiency-increased wind generator comprises one universal wind-gathered and wind-inducted device and one wind-gathered efficiency-increased device, eachuniversal wind-gathered and wind-inducted device is one cylinder body provided with uniformly distributed wind induction channels along the circumference, each wind-gathered efficiency-increased device is one cylinder body in a waist drum shape having two enlarged ends and one small middle portion, the two ends of each cylinder body are opened to form one efficiency-increased channel, and the bottom portion of a wind releasing negative-pressure port is fixed on a support. The system provided by the invention can be flexibly arranged according to different topographies and landforms, is simpleto install and convenient to maintain and use, can effectively utilize village wind energy generation and can serve a village household energy-gathered efficiency-increased wind power generation system.

The invention discloses portable power generation and charging integrated equipment for military use. The portable power generation and charging integrated equipment comprises a photovoltaic array, a DC/DC converter, a storage battery, a detection module, a controller, a high-temperature fuel cell stack, a fuel tank and an electric control fuel supply value; the photovoltaic array converts solar energy into electric energy; after being converted through the DC/DC converter, direct-current electric energy can be directly used by direct-current electrical equipment and also can be used for charging the storage battery; to ensure the normal use of a military product, the storage battery is full of electric energy for a long time and used for supplying power to auxiliary heating equipment of the high-temperature fuel cell stack, such that normal starting of a power generation system of the high-temperature fuel cell stack is ensured; the direct-current electric energy output by the high-temperature fuel cell stack is connected with the input of the DC/DC converter, such that another power supply line is formed; the detection module detects the charge state of the storage battery; if the charge state of the storage battery is too low, the controller controls the DC/DC converter to charge the storage battery; the detection module detects the electricity consumption condition of the output port of the DC/DC converter; if the electricity consumption power is greater than the direct-current electric energy generated by the photovoltaic array, the controller controls a fuel to be supplied to the electric control valve; the fuel in the fuel tank is added into the fuel cell stack; the fuel cell stack generates the direct-current electric energy supplied to the DC/DC converter; and thus, continuous and steady power supply and charging functions are realized.

Provided is a power supply system etc. which can stabilize and supply power to a load while a power generation source which generates an unpredictable amount of power is used as a power generation means that is electrically connected to a commercial system. The power generation source is employed in a manner similar to a power generation source which uses natural energy such as sunlight or wind power for example. A first power generation source, which generates an unpredictable amount of power, is provided together with a storage means and a second power generation source, which is able to vary the power supplied, as a distributed power source unit. When the power supply value of the first power generation source is less than a standard power value, which is the power value that should be output by the distributed power source unit, the power storage means and the second power generation source supply the shortage in the power value. When the power of the commercial system stops, the distributed power source unit becomes the standard power source, the use of another independent power source becomes possible, and the stable supply of power is further facilitated.

The invention belongs to the field of wire and cable production and manufacturing and discloses a PVC insulating material for manufacturing of fireproof cables and a preparation method of the PVC insulating material. The material quickly forms a compact and hard protective shell with a self-supporting effect after fire occurrence and plays a great role in heat insulation and flame retardation. Thepreparation method can be implemented by adoption of existing conventional equipment, raw materials are easy to acquire, and reasonable cost and high cost performance are realized. The PVC insulatingmaterial is prepared from, by mass, 80-100 parts of PVC resin powder, 20-40 parts of epoxy resin, 30-80 parts of a plasticizer, 10-200 parts of filler, 5-20 parts of auxiliary agents, 0-5 parts of acoloring agent, 5-20 parts of a lubricant, 3-10 parts of a stabilizing agent, 20-200 parts of combustion shell-forming additives, 20-30 parts of aluminum oxide, 15-80 parts of a cosolvent, 5-8 parts of a flame retardant and 5-10 parts of a smoke suppression agent.