199 results about "Energy dispatch" patented technology

The invention belongs to the blockchain technology field and discloses a distributed energy dispatching transaction method based on a global energy blockchain. By constructing a global energy Internetsystem based on a global energy blockchain, the global energy blockchain may have an effect of a distributed ledger. By using the global energy blockchain, low-cost channels for direct communicationare established between massive smart devices. Further, through a decentralized consensus mechanism, the security and privacy of the global energy Internet system is improved. A reliable mathematic encryption algorithm is used to protect the user's privacy. Through distributed decision, various organizations participate together to enhance recognition degree. Ultimately, the self-management and maintenance of the global energy Internet system is achieved, the global energy Internet system is converted into a decentralized, self-organizing, and self-regulating system, point-to-point value transmission without the intermediary trust and secure distributed data sharing are achieved, and a global energy Internet distributed platform is constructed.

Systems that allow energy allocation for energy storage cooperation are disclosed, with specific methods outlined concerning allocating energy stored by an energy storage device between a utility provider, a customer, and/or a third party. The methods may include allocating a portion of stored energy for a utility provider's benefit which may be gained as a result of a part of the allocated energy being dispatched into a utility network and allocating another portion of energy stored in the energy storage device for the benefit of the customer. Additional embodiments disclose the dispatching of the energy stored, signals used to bring about a dispatch, the nature of the relationship between the utility provider, the customer, and the energy stored, methods for making energy available to a utility provider without a prearranged reservation of the energy, penalties for misallocating energy, apparatus for allocating energy and causing dispatch, and more.

The invention proposes a double-layer-optimization-based optimized operation management method for an electrical-thermal-storage boiler by a microgrid. The method comprises: a photovoltaic output prediction model, a wind power output prediction model, a micro gas turbine model, a diesel engine model, and a storage battery model are constructed, and a thermal load demand model is constructed by a method of improving a similar day so as to improve the precision of a thermal load demand prediction model; a double-layer optimization model is established, so that the wind curtailment and light curtailment values of the system can be reduced under the circumstance that the integrated cost of the system is minimized, wherein an energy management system is introduced into the lower layer and a centralized energy management system is introduced into the upper layer; and an objective function is solved by using an adaptive quantum chaos genetic algorithm to obtain outputs of all units in a microgrid system precisely, so that the high economic benefits and the high renewable energy source utilization rate can be realized under the circumstance that the electrical load and thermal load demands in the system are satisfied. Therefore, energy dispatching values of all units in the system can be calculated scientifically.

The invention discloses an energy supply system for a stratosphere electricity-electricity hybrid solar airship. The system is an electricity-electricity hybrid energy supply system which takes a solar battery array as a main power supply, takes a regenerative hydrogen-oxygen fuel cell and a high-energy power storage battery pack as auxiliary power supplies, takes a direct-current brushless motor and driving controller as drive devices, takes an energy monitor as an energy distribution system, and takes a one-way DC/CD converter and a two-way DC/CD converter as voltage regulating devices. The solar battery array is connected with the one-way high-voltage DC/CD converter with maximum power point tracking through a cable; the one-way high-voltage DC/CD converter is connected with the driving controller of the direct current brushless motor through the cable; the controller controls the direct current brushless motor to drive a high altitude propeller; the one-way high-voltage DC/CD converter is connected with the two-way high-voltage DC/CD converter through the cable; and the one-way high-voltage DC/DC converter is connected with a charging regulator of the high-energy power storage battery pack. The energy supply system realizes reasonable distribution of power based on the energy monitor, and ensures the maneuvering safety and long service life of the stratosphere electricity-electricity hybrid solar airship.

The invention discloses a microgrid multi-time scale self-adaption energy dispatching method under a source-grid-load interaction mode. The invention starts from the aspect of microgrid multi-time scale optimal management, and provides a self-adaption energy management method comprising basic day conventional dispatching and control day rolling dispatching. According to the method, labor is contributed for an energy storage device and a diesel generator according to a global object function and a global constraint condition, active power consumption of power and controllable and respectable load interactive with a large power grid is optimized, and the magnitude of the contributed labor can be predicted according to wind power and photovoltaic power generation systems, self-adaption adjustment for energy storage SOC penalty factors and control day rolling optimization time duration is realized, the influence of the error of the contributed labor predicted by the wind power and photovoltaic power generation systems on microgrid energy management is reduced, and economic and environmentally-friendly coordinated operation of a microgrid is realized.

The invention discloses an optimized energy dispatching system and method for renewable-energy-source-based combined supply of cooling, heating and power. The system is characterized in that an energy production control module, an energy storage control module and a load control module are respectively connected with an energy management module. The energy production control module, the energy storage control module and the load control module collect field energy supply, energy storage, and load device information respectively and carry out data exchange with the energy management module by a field bus; the energy management module receives and stores the information uploaded by the energy production control module, the energy storage control module and the load control module; and with the information, short-term prediction and/or ultra-short-term prediction of the renewable energy or load can be realized and short-term optimization and/or ultra-short-term optimization of cooling/heating supply, cooling/heating storage, power supply, power storage and operating states of the dispatching function unit can be realized.

The invention relates to a microgrid multi-energy economic method based on a positive and negative feedback particle swarm optimization algorithm. The method comprises: step one, an optimization objective function for optimizing the system generator output and minimum power generation cost is established under the circumstance of satisfying the system operation constraint condition; step two, setting a constraint condition of the optimization objective function from the step one; and step three, carrying out optimization calculation by using a positive and negative feedback particle swarm algorithm, setting various parameters of the algorithm, and then starting iterative calculation to obtain an optimal solution of the optimization objective function from the step one. According to the invention, with a dynamic double-population particle swarm structure and linear decreasing inertia weight calculation, multi-energy scheduling of the micro grid is optimized effectively.

The invention discloses a microgrid and a stored energy dispatching method thereof. The microgrid mainly comprises a photovoltaic module, an inverter, a storage battery, a main network, a rotary load, a super capacitor, a variable frequency starting device and the like, wherein the photovoltaic module is connected onto an alternating current bus through the inverter; the super capacitor is connected onto the alternating current bus after being converted into alternating current through the inverter; and an energy storage battery is connected onto the alternating current bus through the inverter. According to the method, a stored energy operation mode is adjusted according to the state of the microgrid; when the rotary load is started, the super capacitor is adopted to discharge to balance photovoltaic power generation and loading; during the operation process of the rotary load, the super capacitor is preferentially adopted to output power, the discharge of the super capacitor is ended, and the energy storage battery outputs power. According to the microgrid and the stored energy dispatching method thereof disclosed by the invention, the problems that an impact effect is generated to the microgrid when the rotary load is started and the power supply reliability is low are solved; clean and renewable energy sources are fully utilized, and moreover, the waste of the clean and renewable energy sources is avoided; and the overall service life of the microgrid is prolonged while the power supply reliability of a user is guaranteed.

The present invention relates to an energy allocation system for operating at least an energy storage device to substantially balance the energy consumed by the energy storage device with the energy supplied thereto, comprising the steps of: determining a power flexibility of the energy storage device by generating an upper time-varying power function; predicting energy consumption data per discrete time-slots over a given time-window for the device; predicting a demand for energy by the device in a given planning time-period; generating a time-varying upper energy function for the demand prediction that defines an uppermost limit for the supply of energy to the device; generating a time-varying lower energy function for the demand prediction that defines a lowermost limit for the supply of energy to the device, and supplying energy to the device in a range defined by the limits specified by the upper energy function and the lower energy function.

Systems and methods for minimizing demand charges, including determining one or more optimal monthly demand charge thresholds based on historical load data, time of use charges, demand charges, and energy storage unit size for one or more end users. A grid power dispatch setpoint is calculated for a particular time step based on a daily load forecast and a daily economic dispatch solution based on the determined optimal monthly demand charge thresholds. A grid power dispatch setpoint for a subsequent time step is determined by iteratively solving the daily energy dispatch for the subsequent time step to determine an optimal grid power dispatch setpoint. Energy and demand charges are minimized by controlling charging and discharging operations for the energy storage unit in real-time based on the determined optimal grid power dispatch setpoint.

The invention discloses an electric automobile multi-port direct current charging point which comprises a central control unit, a chargeable unit, a card swiping unit, an energy dispatching unit, a man-machine interface unit, communication units, a charging interface and a guidance control unit. The central control unit is respectively connected with the chargeable unit, the card swiping unit, the energy dispatching unit, the man-machine interface unit, the charging interface and the guidance control unit; the guidance control unit is connected with the charging interface; and the central control unit and the charging interface are respectively provided with the communication units for communicating with a charger. The direct current charging point can be multipurpose by calculation of the energy dispatching unit and the control of the central control unit, energy usage rate is increased, and the resource problem of large occupied area of a plurality of charging points is solved. Moreover, the multi-port direct current charging point can be managed and dispatched by a superior monitoring system, charging output power can be adjusted under the condition of power network load peak, and the influence on a power network is decreased.

An energy storage facility comprising at least one energy storage device and one renewable energy generating device is disclosed. The energy storage device can operate in a few modes of operation, consisting of at least a charging cycle and a discharging cycle. During one period of the charging cycle, energy is consumed by and stored within the energy storage device, and during a second period of discharging, energy from the storage device is dispatched to the grid. The total amount of energy consumed by the storage device is larger than the total amount of energy dispatched from the storage device. The total amount of energy dispatched to the electrical grid from both the storage device and the renewable energy generating device does not exceed the total amount of energy drawn down from the grid.

The invention belongs to a multi-quadrant photovoltaic energy storage and inversion integrated device. The integrated device comprises a photovoltaic cell power conversion device, an energy storage cell bidirectional energy conversion device, a DC bus energy bidirectional conversion device and the like. Owing to the integrated energy dispatching software based on bus voltage variation, the multi-quadrant photovoltaic, energy storage and inversion integrated multi-power flowing function is realized.

The invention provides a big data-based hydrogen production, hydrogen transportation and hydrogenation scheduling system and a corresponding method, and aims at an industrial network taking a hydrogen production plant, a hydrogen refueling station, a hydrogen transportation vehicle and a hydrogen fuel vehicle as nodes, through comprehensive informatization monitoring of upstream and downstream of the industry, operation data of links of hydrogen energy storage and transportation, hydrogenation and hydrogen utilization are integrated, a whole-industry hydrogen energy dispatching system is established, production, transportation and adding of a hydrogen energy supply chain are achieved through a big data intelligent means, efficient operation of all links of hydrogen production, hydrogen transportation and hydrogen adding of the whole industry chain is promoted, and especially for commercial operation vehicles such as public transportation, passenger transportation and freight transportation, the characteristics that lines and vehicle types are fixed, related data are convenient to collect, and a scheduling plan is easy to formulate can be fully played, so that the utilization efficiency of hydrogen energy is further improved when the method is implemented, and the beneficial effect that the overall cost of an industrial chain is reduced is achieved.

The invention provides a large-scale battery energy storage system based on temperature field control and an energy dispatching method thereof, and belongs to the technical field of batter temperature field control. The large-scale battery energy storage system is formed by connecting a plurality of energy storage power modules in parallel, and each energy storage power module comprises a battery pack and a bidirectional electrical energy conversion topology circuit based on batteries. Each bidirectional electrical energy conversion topology circuit based on batteries comprises a bidirectional direct-current and direct-current conversion module, a bidirectional direct-current and alternating-current conversion module and a voltage output end. The system can realize that the energy storage system can protect and maintain the battery packs while meeting the power requirement of energy storage, so that the battery packs work in a safe and proper temperature range, and the service lives of the batteries are finally prolonged.

The invention is suitable for the field of energy and provides an energy managing method, an energy managing system and an energy dispatching and managing center. The energy managing method comprises the following steps of: obtaining energy data which is synchronously collected by a remote data collection unit in real time; analyzing and processing the real-time collected energy data; generating an energy data diagram according to the analyzed and processed energy data; and displaying the energy data diagram. The invention has the advantages of real-time energy management and energy consumption reduction.

The invention provides a method for evaluating a reactance parameter of a transmission network in an energy dispatching management system. The method comprises the following steps: 1, acquiring an information output section of SCADA at a certain moment to start the evaluation of the reactance parameter of the transmission network in the energy dispatching management system; 2, carrying out pre-identification processing on remote sensing and remote signaling after a new section of information output of the SCADA system is acquired, and determining the data accuracy of the acquired section logically; 3, topologically searching according to the state of a disconnecting link of a power grid switch in each section of the SCADA system to generate each independent circuit and cycle basis group; 4, writing a loop measurement equation corresponding to each cycle basis, making each cycle basis group correspond to a group of loop measurement equations; and 5, adding the loop measurement equation corresponding to the cycle basis into the loop measurement equation group corresponding to the same cycle basis group if the rank is increased; switching to 1 if the cycle basis group which is not solved still exists; and continuing to acquire a new section of the SCADA until branch reactance parameters of all the cycle basis groups are evaluated and solved.

The invention discloses a solar assisted home energy management method capable of considering various uncertain factors under a real-time electricity price environment. The method comprises the following steps: firstly, equally dividing an energy dispatching cycle into a plurality of time periods used for simulating real-time electricity price, and on the basis, constructing a solar assisted home energy utilization system model; secondly, considering user comfort level preference, and determining the optimization target and the constraint condition of system energy management on the premise of guaranteeing that the user comfort level is met; thirdly, constructing a real-time electricity price model, a solar radiation model and an outdoor temperature model capable of considering uncertainty, and adopting a Monte Carlo simulation method to establish a large-scale random scene which embodies the uncertainty; and finally, adopting a scene reduction technology to eliminate a low-probability scene and a scene with an equivalent clustering probability, and for each scene, adopting a two-stage stochastic programming method to carry out rolling solving on the electricity utilization optimization problem of each time period in the scene. The method is suitable for the energy management of the home energy utilization system under the real-time electricity price environment.

A retail energy provider system comprising a market transaction manager, business rules and requirements processor, usage rater, customer analysis and quality control auditor, customer billing processor and collection manager, customer payment processor, third party sales and marketing application programming interface, customer acquisition and residual income interface, having a wholesale forecaster, interactive voice response system, intranet web services, internet web services and network based external customer service and executive management systems and financial services functions, all said functions and systems interacting with a robust SQL database engine for which the novel database schema is taught herein.

The invention discloses an energy storage power generation system of a wind power generator set and an energy dispatching method of the energy storage power generation system. The energy storage powergeneration system comprises an energy storage unit, a battery management unit, an energy storage bidirectional converter, a boost transformer and an energy management unit, wherein the energy storageunit is used for storing or releasing electric energy, the battery management unit is used for detecting and protecting a battery module in the energy storage unit, the energy storage bidirectional converter is used for converting an alternating current of a power grid to a direct current so as to charge a battery or converting the direct current discharged from the battery to the alternating current sent back to the power grid, the boost transformer is used for connecting the energy storage bidirectional converter and the power grid and rising an output voltage of the energy storage bidirectional converter to a power grid voltage, and the energy management unit is used for sending a control signal to the energy storage bidirectional converter and a master controller of the wind power generator set to do real-time control according to real-time data of the master controller of the wind power generator set, the energy storage unit, the energy storage bidirectional converter and a powergrid dispatching instruction and wind power forecast information of a power forecast system. By the energy storage power generation system, the optimal charge-discharge rate of the energy storage system can be made, the utilization efficiency of the energy storage system is improved, and moreover, the energy storage system is high in control efficiency and rapid in response speed.