34 results about "Renewable energy supply" patented technology

The invention discloses a compressed air energy storage system, in particular to a compressed air energy storage system for an electric power system. The compressed air energy storage system disclosed by the invention has reasonable structure, flexible layout, high energy conversion efficiency, good economical efficiency and peakload regulation performance, rapid startup, safety and reliability. The compressed air energy storage system applying the invention can be used for despicking and valley filling of the electric power system, energy storage of renewable energy source and power supply when the renewable energy source is in supply intermission or in shortage in an electric network, and can be used as an emergency power station, an energy accumulator of distributed energy resource and other equipment for electric power energy storage.

The present invention provides a hybrid financing structure for renewable power facilities that reduces the cost of power supplied from such facilities. In a preferred embodiment, the hybrid financing structure combines low cost financing, e.g., bonds, available to governmental entities, e.g., municipalities, with tax benefits and similar benefits available to private entities to lower the cost of power supplied from a renewable power facility. The renewable power facility is owned and operated by a private company to take advantage of tax benefits and similar benefits available to the private sector. To further reduce costs, a municipality prepays for power supplied from the facility using low cost financing, e.g., tax exempt bonds, available to the municipality. The hybrid financing structure also includes a production tracking account that reduces risk associated with prepayment of fluctuating renewable power supplies for the municipality by notionally tracking actual power production against predicted levels.

The invention discloses a renewable energy supply base station access selection method and a renewable energy supply base station access selection system. The method comprises the following steps of: acquiring information which affects candidate base station access selection in a renewable energy supply wireless communication network; calculating optimal energy efficiency, which can be reached by a link, and a link energy consumption characteristic when a terminal is accessed to a candidate base station according to the received information which affects the candidate base station access selection; initializing a terminal set accessed to each candidate base station, judging whether a network with energy balance is an initial access terminal or not and sustainably determining an access scheme according to network energy with energy balance; and judging whether a non-accessed terminal is available or not, updating the terminal set accessed to each candidate base station to continuously perform access selection if the non-accessed terminal is available and otherwise finishing selection. According to the method and the system, energy sustainability and balance of all base stations in the entire network are improved, the integral energy consumption of the network is minimized, and the service time of the network is prolonged.

The invention discloses a compressed air energy storage CCHP micro-grid structure and an operation method thereof. The compressed air energy storage CCHP micro-grid structure comprises renewable energy supply equipment, and a combined cooling, heating and power supply unit comprising a gas turbine generator and an absorption type refrigerator, wherein the combined cooling, heating and power supplyunit takes natural gas as the fuel; an adiabatic compressed air energy storage system compresses air to produce the heat energy, the heat energy is stored through the regulation of a three-way valveor directly supplied to a heat user, and the heat energies of different heat sources are absorbed according to the working mode of the system when the energy is released. The A-CAES and the new energyare complemented, a CCHP micro-grid is combined, the A-CAES structure and the main working mode are optimized from the perspectives of flow design and gradient utilization of the energy, the heat source of the regenerative heat is regulated in the A-CAES expansion process by opening and closing a valve, so that various grades of energies in the CCHP micro-grid are reasonably distributed, and thegradient utilization of the energy of a CCHP system is greatly increased.

A hybrid renewable energy supply system is mainly applied to a stationary or mobile actual mass-production power generating operation to transform a lot of organic waste into electric energy using a gaseous biomass power plant, and may be combined with renewable energy such as solar energy, wind energy, micro-hydro energy and the like, thereby providing a self-operating system without using mains. The gaseous biomass power plant can use an organic material source, such as food wastewater, livestock farming wastewater, agriculture waste or the like, to generate a biomass gas, thereby possessing dual effects of waste recovery and clean energy production. The hybrid renewable energy supply system comprises at least one renewable energy device for transforming nature energy into electric energy; and an electric energy control device, which connects the renewable energy device to a mains grid and controls storage and output of electric energy of the renewable energy device.

A computing system can facilitate cooperation between a utility and a fleet of vehicles. The system can receive a charging requirement from a vehicle. The charging requirement can be based on an available power output capacity of a battery pack of the vehicle. The system can receive solar ramp data from a utility. The solar ramp data can be based on an anticipated power output of a solar energy source. The system can determine a charge plan based on the charging requirement and the solar ramp data and specify a timing of charging or discharging the vehicle. The system can transmit the charge plan to the vehicle. The system can receive load data from the vehicle based on supply or consumption of power by the vehicle and the charge plan.

A renewable energy supply system comprises a waste heat boiler distributing gas generation system, a biogas fermentation system, a heating system, a drive absorption refrigeration system, a CO2 capture system and a CO2 Lanken cyclic power generation system. The waste heat boiler distributing gas generation system comprises an air feeder, an air compressor, a combustion chamber, a gas turbine generator unit, a waste heat boiler, a heat collector, a draught fan and a chimney which are connected in sequence; the biogas fermentation system comprises a biogas digester and a biogas storage tank which are connected in sequence, the biogas storage tank is connected with the combustion chamber, the biogas digester is connected with a water heat exchanger through a pump, and the water heat exchanger is mounted on the waste heat boiler; the heating system comprises a water heater preset in the waste heat boiler, a heat supply pipeline, a heat consumer, a backwater pipeline and a backwater pump which are cyclically in sequence, and a make-up water tank is arranged on the backwater pipeline; the drive absorption refrigeration system comprises a generator, a condenser, an evaporator and an absorber which are connected in sequence, the absorber is connected with the generator through a pump and a throttle valve, the generator is connected with the heat exchanger, and the heat exchanger is connected with the heat collector of the waste heat boiler. By the arrangement, energy resources are saved, triple co-generation of cold, heat and electricity can be achieved, and energy distribution is realized.

A large scale charging infrastructure including an intelligent energy management system that utilizes a hardware-software architecture for managing simultaneous charging of a plurality of electric vehicles using a variety of energy supply sources including renewable energy supply sources, local storage sources, and power grid sources. Operating costs are minimized by taking advantage of flexible charging schedules and economies of scale and adverse impacts of unmanaged charging are mitigated.

A system and method for supplying an energy grid with energy from an intermittent renewable energy source having a production unit for producing Hydrogen, Nitrogen, and Oxygen. The production unit is operated by using energy provided by the renewable energy source. An Oxygen storage receives and stores Oxygen produced by the production unit, a mixing unit receives and mixes the Hydrogen and the Nitrogen produced by the production unit to form a Hydrogen-Nitrogen-mixture, an Ammonia source receives and processes the Hydrogen-Nitrogen-mixture for generating a gas mixture containing Ammonia, an Ammonia power generator generates energy for the energy grid. The Ammonia power generator is fluidly connected to the Ammonia storage vessel, is configured to combust the received Ammonia in a combustion chamber to generate the energy, and is fluidly connected to the Oxygen storage to introduce Oxygen into the combustion chamber for combustion of Ammonia.

The invention relates to a method for selecting an effective area based on a renewable energy supply base station. The method comprises the steps of S1, calculating the effective coverage area of the renewable energy supply base station, and S2, selecting the coverage area of the renewable energy supply base station according to the effective coverage area of the renewable energy supply base station. According to the method, the renewable energy supply base station coverage area and the network energy sustainability are used as the static system performance measurement criteria and the dynamic system performance measurement criteria respectively, energy capturing and consumption nondeterminacy of the renewable energy supply base station is considered, the base station coverage area adjusting scheme is formulated by aiming at joint optimization of the base station coverage area and the network energy sustainability, the energy utilization efficiency is improved, and the method is dynamically suitable for nondeterminacy of the renewable energy. The invention further discloses a system for selecting the effective area based on the renewable energy supply base station.

The invention discloses a movable heat storage container and a heat release method thereof. The container comprises a plurality of heat storage rods, heat conduction oil splitters and heat conductionoil current collectors, a heat conduction oil inlet, a heat conduction oil outlet, an oil pump, a heat release heat exchanger, a box body, metal keels, a heat insulation material and an oil tank; theheat release method comprises a heat charging process, a transportation process and a heat release process. According to the movable heat storage container and the heat release method, renewable energy sources are produced, stored and used separately, the problems that a traditional renewable energy supply system is difficult to design, high in cost, low in efficiency and limited in use site are effectively solved.

The invention discloses a combined system of hydrogen-oxygen fuel cell power generation and a supercritical CO2 generator set. The combined system solves the problem that in an existing industrial park, renewable energy supply is not matched with the intermittent energy consumption of the park, and energy waste is likely to be caused. The wind power, solar photovoltaic power generation, terrestrial heat and industrial waste heat generator sets in the industrial park are connected together in a micro-grid manner, the redundant power in a micro-grid is decomposed into hydrogen and oxygen throughan electrolytic tank at the peak and valley of power utilization, then the hydrogen and oxygen are compressed and stored by a compressor, and the stored hydrogen is used for power generation througha high-temperature fuel hydrogen battery. The heat exchanged during the cooling of hydrogen and oxygen and the heat exchanged during heating of the high-temperature fuel hydrogen battery are exchangedto a supercritical CO2 circulating system, a supercritical CO2 medium primarily heated by a geothermal heat exchanger in the system is subjected to secondary heating and tertiary heating, and the supercritical CO2 heated for three times pushes the supercritical CO2 generator set to generate power.

A method and system for power supply integration, comprising interfacing at least one of: i) an AC power supply and ii) a DC power supply, and supplying, from the at least one of: i) an AC power supply and a ii) a DC power supply, DC power to the at least one DC load. The energy supply to the at least one DC load from the at least one AC power supply and the at least one DC power supply is controlled so as to selectively supply power from renewable energies for example.

The invention relates to a regional multi-energy system structure and a capacity configuration optimization method thereof, the system structure comprises an energy transmission and distribution system and a demand side energy supply system which are in interactive connection, and the demand side energy supply system comprises a traditional energy supply system, a renewable energy supply system and a combined heat, power and cooling energy supply system. The capacity configuration method specifically comprises the following steps: taking minimization of cost effectiveness as a target function; according to the energy conversion, the productivity constraint, the energy balance and the unit cost learning curve, setting and obtaining the constraint conditions; and on the basis of the objective function and the constraint condition, jointly constructing a productivity configuration optimization model, and solving the productivity configuration optimization model to obtain a productivity configuration optimal result. Compared with the prior art, multiple energy technologies can jointly participate in the optimization process, and the dynamic evolution of the technical cost can be comprehensively considered, so that the reliability of the optimization result is ensured.

A power management apparatus and a housing complex combination method for trading surplus power for a housing are provided. Influencing factors in analyzing a consumption pattern of an individual housing and various correlations between the influencing factors are analyzed, and an optimal sustainable housing complex through supply of new renewable energy is formed.

The invention is directed at a substantially continuous unbroken frequency curve during operation modes from dump load operation, reverse power operation, low load operation and normal operation. Controlling functions are active during all operation modes except the engine controller which is on standby when in an engine stopped mode. This all together gives a dynamic, robust and flexible energy supply, preferably in a range of 50 to 50.3 Hz. Further the clutching is performed substantially without fluctuations. The invention substantially prevents harmonic fluctuations to the grid. The main reactive power compensation is handled by the alternator always connected to the grid and rotating. Further reactive power compensation is done by a standard automatic reactive power compensation system. The invention contributes to stabilization of grid fluctuations with its mechanical inertia from the rotating alternator in the engine stopped mode and also with the engine in the other modes.

The invention discloses an energy consumption control strategy generation method and system, device, an energy distribution system and a medium, and is applied to the energy distribution system. The method comprises the steps of: predicting predicted renewable energy supply of each time slot in the future through a first predictor; obtaining time decomposition slices and corresponding slice required energy according to the predicted renewable energy supply and actual required energy; predicting a unit energy supply parameter through a second predictor, and determining a strategy threshold value of the time decomposition slices in the current time slot, wherein the energy consumption control strategies constructed by the strategy threshold values are used for controlling energy consumption. According to the invention, the predictors accurately predict the renewable energy supply and predict the cost parameter to construct an online energy supply optimization control strategy, the energy consumption efficiency and cost can be effectively optimized, the rationalization of energy supply allocation is facilitated, energy conservation and emission reduction are facilitated, and the problems in the prior art are solved.