47results about How to "Play the role of shaving peaks and filling valleys" patented technology

The invention discloses an energy-storage type alternating current and direct current mixed micro-grid and a control method thereof. The energy-storage type alternating current and direct current mixed micro-grid comprises an alternating current micro-grid, a direct current micro-grid, a battery energy-storage system and an energy management system EMS, which are connected with an external grid control center. The control method of the energy-storage type alternating current and direct current mixed micro-grid comprises the following steps of initializing the EMS to acquire information data of the alternating current micro-grid, the direct current micro-grid and the battery energy-storage system; acquiring information data of an external public grid in real time; regulating and controlling the alternating current micro-grid, the direct current micro-grid and the battery energy-storage system according to the acquired data. The energy-storage type alternating current and direct current mixed micro-grid and the control method thereof have the advantages that the energy utilization efficiency can be improved, the size of a transformer can be reduced, networking and controlling are more flexible, the cost is reduced, and the power supply reliability of the whole system is improved.

The invention relates to a multi-target run scheduling method for a micro-grid containing a hybrid energy storage system of an electric vehicle. The method is characterized by comprising the following steps of (1) constructing energy Internet on the basis of considering the electric vehicle as load and power generation units simultaneously and the combined heat and power heating benefit; (2) constructing a multi-target optimal scheduling model for the micro-grid containing the hybrid energy storage system of the electric vehicle according to the energy Internet and comprehensively considering economic and environment benefits to obtain target functions and constraints of the model; and (3) solving the multi-target optimal scheduling model for the micro-grid through an NSGA-II multi-target optimization algorithm to obtain a Pareto front solution, and obtaining an optimal run scheduling scheme for the micro-grid in 24 hours. In comparison with the prior art, the method has the advantages of good economic benefit and capabilities of improving the environment, reasonably distributing the output, carrying out peak load shifting and prolonging the service life.

The invention relates to a multi-target operation scheduling method for a micro-grid with an electric vehicle hybrid energy storage system. The micro-grid runs in a grid-connection mode and comprises a plurality of micro-sources and loads, wherein the loads include an electric load and a heat load; and the micro-sources include a micro-gas turbine, a fan, a photovoltaic cell, a fuel cell, a storage battery and an electric vehicle. The method comprises the following steps of S1: obtaining state information of each load and each micro-source in the micro-grid; S2: establishing a multi-target economic scheduling model with minimum running and pollutant control costs; S3: performing optimization solving on the multi-target economic scheduling model by adopting an NSGA-II multi-target optimization algorithm to obtain optimal active power of each micro-source; and S4: according to the optimal active power of each micro-source, controlling active power output of each micro-source. Compared with the prior art, the method has the advantages that the micro-grid consisting of a distributed power supply can run more economically, flexibly and environmentally, and the power generation advantage of the distributed power supply can be brought into full play.

The invention provides an electric automobile charging station orderly charging method based on a double-layer optimization algorithm. The genetic algorithm is adopted in an upper layer to encode dispatching plans Pj,t of various charging stations, an initial population is formed, a fitness function is F, then the algorithm is used for iteration, and the Pj,t optimal solution is finally obtained;then, the optimal solution is transmitted to various charging stations of a lower layer; an electric automobile charging path selecting mechanism is considered in the lower layer, and an ant colony algorithm is adopted for solving; electric automobile parameters, position information, charging station information and the like are input firstly, the lower-layer model minimum dispatching deviation function f1 is calculated, based on the minimum deviation and constraint, the ant colony algorithm is adopted for calculating the target function f, an electric automobile optimal charging scheme is formed, return to the upper layer is conducted for continuous optimization, and according to the solving end condition, the upper-lower-layer dispatching deviation meets the convergence criterion. The upper layer model optimization target is load peak clipping and valley filling, and a lower layer model is used for shortening the electric automobile charging outgoing time and reducing the charging expense.

The invention belongs to the field of novel energy power generation, and in particular relates to a wind/wave hybrid power generating system. The wind/wave hybrid power generating system consists of a wind energy catching device, a first hydraulic pump connected with the wind energy catching device for outputting hydraulic energy, a wave energy catching device, a hydraulic cylinder connected with the wave energy catching device, a generator, a hydraulic motor and a first energy accumulator, wherein the input port of the hydraulic motor is respectively connected with a first check valve and a second check valve, and the first energy accumulator is connected with the input port of the hydraulic motor through a first throttling valve, a first pressure matching device is further arranged between the first hydraulic pump and the first check valve, and a second pressure matching device is further arranged between the hydraulic cylinder and the second check valve. When the two hydraulic oil liquid paths input by the two sets of energy catching devices are combined into one path to be outputted, the confluence input pressure grades of the two hydraulic oil liquid paths can be matched by means of the two pressure matching devices, or when the confluence input pressure degrees of the two paths are not matched, the situation that one of the energy catching devices is stopped due to that one input blocks the other input is smooth can not occur.

The invention discloses a method and a device for inhibiting photovoltaic generation output power fluctuation. The method comprises the steps as follows: connecting photovoltaic array assemblies in series or in parallel, charging an energy storage device through a DC/DC (direct current/direct current) charging device, converting energy into an alternating-current power supply through a bidirectional converter, and supplying the power supply to a load; and at night or in the absence of sunlight, charging the energy storage device through the DC/AC bidirectional converter by electric energy of a power grid during the period that the valley electricity price of the power grid is cheap so as to achieve a peak load shifting effect of the power grid. A principle is that the photovoltaic output power is stabilized by the capacity of the energy storage device to guarantee stable output power, improve power supplying reliability and output the electric energy with qualified quality to a user. The energy generated by photovoltaic generation is stored at first and then converted into the alternating-current power supply through the bidirectional converter, and the power supply is supplied to the load; and under the circumstance that the energy storage capacity is full, a controller is switched to a floating charge mode, the power supply is directly supplied to the load, and the stored energy serves as a supplement.

The present invention discloses an electrified railway three-phase photovoltaic DC side energy storage system and a control method thereof. A three-phase access mode is used by a photovoltaic power generation system, and an energy storage device is connected to a photovoltaic direct-current side. The operating mode selection is carried out according to real-time detection data and a processing result, and combined with traction load characteristics, a strategy of self-generation and use and extra power for grid is used. When a traction load is detected, a self-generation and use mode is used,when the power is supplied to the load, extra electric energy is stored in energy storage equipment, and an effect of 'peak-load shifting' is achieved. When an electric arm idle load is detected, themode is switched to an extra power for grid mode, and photovoltaic and energy storage equipment transmits electric energy to a grid at the same time. The reasonable dissipation of photovoltaic energycan be realized, a discarded electric quantity is reduced, at the same time, a configured energy storage capacity is reduced, and the economic efficiency of the system is improved.

The invention discloses a phase change heat storage header type condensation radiant panel which comprises a heat supply pipeline and a header type radiant panel body. The header type radiant panel body comprises a galvanized steel plate shell. After each of the two ends of the galvanized steel plate shell is separated by a galvanized steel plate, a gas-liquid cavity is formed. Multiple heating pipes are connected between the gas-liquid cavities at the two ends in parallel, and each heating pipe is filled with refrigerating fluid. The space between the outer wall of each heating pipe and the galvanized steel plate shell is filled with a phase change heat storage layer. Multiple partition plates are arranged in each gas-liquid cavity. The partition plates in the gas-liquid cavities in the two sides are staggered in height, and therefore the interiors of the gas-liquid cavities in the two sides are divided into multiple gas-liquid channels through the partition plates. The multiple adjacent heating pipes are connected in series through the gas-liquid channels according to the arrangement of the partition plates to form a heating pipe bundle, wherein the gas-liquid channels are in end-to-end connection with the heating pipes and located on the two sides. The outer surface of the galvanized steel plate shell is coated with a radiant coating layer. According to the phase change heat storage header type condensation radiant panel, modular production and field splicing mounting can be achieved; the construction difficulty can be reduced; modification on building basic facilities and indoor layout is small; the work amount is reduced; and the cost is reduced.

The invention provides a charging pile orderly charging management system, which comprises an intelligent energy main station, an intelligent Internet-of-Things gateway, a carrier concentrator, a carrier module and a charging pile controller, and is characterized in that the intelligent energy main station is connected with the intelligent Internet-of-Things gateway, and the intelligent Internet-of-Things gateway is connected with the carrier concentrators in a plurality of courts; and the carrier concentrator is connected with a plurality of carrier modules, and each carrier module is connected with a charging pile controller. The control method comprises the following steps that the intelligent energy main station receives a charging application of a mobile phone APP, generates a charging plan and transmits the charging plan to the intelligent Internet-of-Things gateway; the intelligent Internet of Things gateway dynamically adjusts the area transformer load, judges whether the charging pile can be charged or not, and allocates a charging plan to the carrier concentrator if the charging pile can be charged; and the carrier concentrator communicates with the charging pile controller through the carrier module to start the charging pile. The charging power of the transformer area charging pile is adjusted, the transformer area transformer load is reasonably distributed, and orderly charging is achieved.

The invention provides a flexible reuse type optical storage charging intelligent charging station based on a high-voltage direct-current microgrid. The system comprises a bidirectional rectification unit, a bidirectional charging pile unit, a switching unit, a charging gun, a photovoltaic power generation unit and an energy storage unit. The bidirectional rectification unit is connected with a 10kV AC power distribution network upwards, and converges with the bidirectional charging pile unit downwards at a 1kV DC bus. The switching unit is connected with the indoor machine room bidirectional charging pile unit, the energy storage unit, the outdoor charging guns and the photovoltaic power generation unit at the same time. Different direct-current charging and discharging channels are established by using a contactor fling-cut switch matrix, and different control strategies are adopted according to the charging power of the electric vehicle, so that the flexible charging of the electric vehicle can be realized; the power utilization of the fast charging station in the daytime load peak period is supported, and a photovoltaic power generation system is added for supplementation, so that the load peak-valley difference of the fast charging station can be effectively balanced, the peak clipping and valley filling effects are achieved, the stable operation of the power grid operation state is maintained, and the system operation efficiency is improved.

The invention discloses a novel header type heat storage radiant plate type indoor heat exchanger for winter and summer. The exchanger comprises a plurality of radiant plate type heat exchange sheets,the radiant plate type heat exchange sheets comprise radiation plate interlayers, N rows of heat exchange pipe bundles are arranged in the radiation plate interlayers from top to bottom, wherein n equals 3-20; in the heat exchange pipe bundles, an included angle between the heat exchange pipe bundles of odd-numbered lines and the horizontal direction is alpha, and an included angle between the heat exchange pipe bundles of even-numbered lines and the horizontal direction is minus alpha, and heat exchange pipe bundles are composed of 2-4 parallel copper pipes; the left and right ends of the heat exchange sheet interlayers are correspondingly provided with refrigerant collecting and distributing devices communicating with the heat exchange pipe bundles, the refrigerant collecting and distributing devices are internally divided into a plurality of refrigerant channels from top to bottom through baffle plates, the refrigerant channels communicate with two-adjacent-row heat exchange pipe bundles, so that the n rows of heat exchange pipe bundles communicate to form an entire channel; and a heat storage medium fills space between the radiation plate interlayers and the heat exchange pipebundles. According to the exchanger, the manufacturing process is simple, the system energy efficiency is high, and the cost is low.

The invention provides a temperature-adjustable valley electric heat storage crude oil heating device, which includes a heat storage body, an electric boiler, a PLC controller, and a sucker rod, wherein the heat storage body is connected to the electric boiler through a pipeline, and the electric boiler passes through The pipeline is connected to the sucker rod, and the PLC controller described above is electrically connected to the electric three-way valve, crude oil heating circulation pump, water supply thermometer, electric heating tube, boiler thermometer, heat storage pump, and heat storage module recovery thermometer; the advantages are: using valley electricity 8 hours of grain storage and 16 hours of heat required for production can greatly reduce production costs; using mixed water adjustment technology, different heating temperatures can be set according to the fluidity of crude oil in different blocks, which has strong applicability and Applicability: The heat storage density of phase change heat storage is high, and the temperature of heat storage and heat release is constant, which is convenient for application in situations with high temperature control requirements.

The invention provides a power generation method and system of power plant combustion metallurgy coal gas. The electricity cost of the iron and steel metallurgy enterprises can be lowered easily. Themethod includes the steps that during the valley electricity period, a power generating set of a power plant adopts the following operation mode for operation: power generation with output power lowered, power generation at some time periods, power generation without blending combustion of metallurgy coal gas, non-power generation or a combination of them, and the metallurgy coal gas is stored ina coal gas container; during a peak electricity or ordinary electricity period, the metallurgy coal gas is released out from the coal gas container, and the power generating set is used for generatingelectricity. The system comprises the coal gas container and the power generating set; the coal gas container is used for storing the metallurgy coal gas in the container during the valley electricity period, and releasing out the metallurgy coal gas from the coal gas container during the peak electricity or ordinary electricity period, and the power generating set is utilized for power generation; and the power generating set does not generate electricity during the valley electricity period or generates electricity at a rated output power without in all time periods, and during the peak electricity or ordinary electricity period, power generation is performed through the coal gas stored in the valley electricity period. The power generation method and system of the power plant combustion metallurgy coal gas are suitable for the technical field of coal gas power generation in the metallurgy enterprises.

The invention relates to the technical field of energy storage and power generation, in particular to a super-audio electromagnetic induction heating binary salt energy storage and power generation system and method. The ultrasonic frequency electromagnetic induction heating equipment is electrically connected with the power grid, an inlet of the ultrasonic frequency electromagnetic induction heating equipment is connected with a pipeline of the normal-temperature fused salt storage tank, an outlet of the ultrasonic frequency electromagnetic induction heating equipment is connected with the high-temperature fused salt storage tank, and the high-temperature fused salt storage tank is connected with the normal-temperature fused salt storage tank; an outlet of the high-temperature fused salt storage tank is connected with a fused salt steam generator pipeline, an outlet of the fused salt steam generator is connected with a normal-temperature fused salt storage tank inlet pipeline, an outlet of the fused salt steam generator is connected with a steam turbine generator inlet pipeline, and an outlet of the steam turbine generator is connected with the fused salt steam generator inlet pipeline. And the steam turbine generator is electrically connected with the power grid. Electricity-heat-electricity energy storage power generation that heat energy is generated by electric energy and then power is generated is achieved, the electric power safety supply guarantee risk and the electric power system safety and stability risk are reduced, and the pressure problem of clean energy consumption is solved.

The embodiment of the invention discloses a torsional vibration absorber, relates to the field of power transmission systems of automobiles, solves the technical problem that torsional vibration of a transmission shaft can not be absorbed in a process of implementing power transmission in the prior art, and aims to improve the running smoothness of the whole automobile and reduce the noise. The torsional vibration absorber comprises a first transmission element connected with the driving end of the transmission shaft, a second transmission element which is connected with the driven end of the transmission shaft and sleeved on the first transmission element and a vibration absorption element which is arranged between the first transmission element and the second transmission element and used for transmitting torque, wherein the vibration absorption element comprises a rigid base body and a rubber ring; the rigid base body is in interference fit with an inner hole of the first transmission element; and the rubber ring is pressed on the outer surface of the rigid base body and is in interference fit with an inner hole of the second transmission element. The torsional vibration absorber is used for transmission shafts of automobiles.