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38results about How to "Achieving in-place consumption" patented technology

AC and DC hybrid micro-grid optimal planning method considering line factor

The invention discloses an AC and DC hybrid micro-grid optimal planning method considering a line factor. The method comprises: establishing a target function of an AC and DC hybrid micro-grid considering a line factor relative to investment cost, loss load cost, and system loss, comprehensively considering system power constraint, system branch constraint, distributed energy output constraint, node voltage deviation constraint, random fault constraint of equipment and other constraints, using Monte Cario to perform fault sampling, through mixed integer linear programming, solving, to obtain ascientific and economical AC and DC hybrid micro-grid distributed power addressing capacity grading optimal configuration result. The method solves a configuration problem of effective access of a distributed power supply in expansion planning of an AC micro-grid, improves on-site elimination capability of the hybrid micro-grid, and meanwhile realizes economical efficiency and reliability of planning of the AC and DC hybrid micro-grid.
Owner:HEFEI UNIV OF TECH +1

New energy power supply system for urban rail traction network and control method thereof

The invention discloses a new energy power supply system for an urban rail traction network and a control method. The system comprises an independent energy storage system located in a middle sectionof a line and a wind-photovoltaic-energy storage hybrid power generation system located at a car depot or a parking lot at an end of the line. The method comprises a step of obtaining a load predictedpower and an expected peak-valley value according to offline prediction data and historical data and judging whether there is a load based on urban rail running data, and a step of judging an operating condition based on a real-time voltage, comparing a predicted load power at a next moment and the expected peak-valley value and judging whether a state is a load running peak-valley state, and determining different control strategies through a judgment result to realize the effective control of an energy storage device in an independent energy storage system and a wind-photovoltaic-energy storage hybrid power generation device and an energy storage device in the wind-photovoltaic-energy storage hybrid power generation system. According to the invention, the consumption of renewable energysources such as local wind and light can be promoted, the grid pressure fluctuation is improved, the peak-load shifting is carried out for the load while the regenerative braking energy is effectivelyrecycled, the operating cost of urban rails is reduced, and the economic benefits are good.
Owner:SOUTHWEST JIAOTONG UNIV

Power grid operation state perception-based distributed photovoltaic cluster dynamic division method

The present invention discloses a power grid operation state perception-based distributed photovoltaic cluster dynamic division method, and belongs to the active power distribution network optimization regulation and control field. The method comprises the steps of on the basis of a static cluster of different voltage grades, when a network topology changes, regulating the power grid sub-regions;when the deviation of a photovoltaic output predicted value and an actual value is large, dynamically screening the distributed photovoltaic units participating in the cluster; when a power grid regulation and control target changes, dynamically dividing a distributed photovoltaic cluster with different division indexes and by utilizing a fuzzy clustering method. The method realizes the distributed photovoltaic cluster dynamic division adapting to the power grid operation state change, has the characteristics of being strong in flexibility and adaptability, etc., and lays the foundation for solving the obvious time delay of the centralized regulation and control and the mass calculation by utilizing a cluster mode.
Owner:SOUTHEAST UNIV

Three-phase unbalanced dynamic power flow model predictive control method for distribution network with smart community

The invention discloses a three-phase unbalanced dynamic power flow model predictive control method for a distribution network with a smart community. Mainly aiming at the problems of distribution network power flow and optimal control when multi-energy is able to access the distribution network, a method for accessing various kinds of distributed energy to the distribution network in a centralized single-point manner to perform optimal control and solving the dynamic power flow of the distribution network online is provided, Considering the fluctuation of community distributed wind power, photovoltaic output and load, aiming at community economy and environmental protection operation, local consumption of the distributed energy is achieved, and energy interaction with the distribution network is carried out, so as to improve the utilization rate of the distributed energy. According to the distributed power supply and load change conditions of the system, a dynamic power flow analysismethod for the three-phase unbalanced distribution network containing a community multi-energy hub is proposed. A model predictive control technology is used for solving the power flow of the distribution network online in a rolling mode, in line with the real-time characteristics of the system operation, and improvement of the control level and operational safety of the distribution network undermulti-energy coordination is facilitated.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Control method for photovoltaic power generation and power grid three-phase balance

A control method for photovoltaic power generation and power grid three-phase balance is implemented by a measurement and control device and a power grid treatment device and comprises the steps of 1,judging a power flow direction of a power grid according to a power read by the measurement and control device, wherein power is supplied to a load from the power grid when the power is positive, andthe power is fed to the power grid by photovoltaic power generation when the power is negative; 2, performing average value calculation on the read three-phase power grid by the measurement and control device; 3, judging a phase circuit with maximum power supplied from the power grid to the load or maximum power fed to the power grid by photovoltaic power generation when the three-phase power isunbalanced; 4, calculating a power allocation coefficient of each power grid treatment device in the three-phase unbalanced line; 5, calculating a power allocation value of each power grid treatment device in the three-phase unbalanced line; and 6, controlling the corresponding power grid treatment devices to output or absorb the power by the measurement and control device according to the power allocation value of the power grid treatment device. By the control method, the purpose of three-phase power balance of the power grid is achieved.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI +1

Micro-energy network system and collaborative optimization operation control method thereof

The invention relates to a micro-energy network system and a collaborative optimization operation control method thereof. Specific equipment contained in an energy supply side and an energy conversiondevice is reasonably configured; the formed micro-energy network system has the advantages that the new energy access proportion is higher; configuration can be optimized through the energy storage device; the power grid, the heat supply network and the air network meet the energy requirements of users; basic balance between local energy production and user energy consumption load is achieved; the collaborative optimization operation control method is used for carrying out rolling optimization on the micro-energy network system, the power output value of controllable energy supply equipment in the micro-energy network system is continuously adjusted, the micro-energy network system is made to operate economically on the premise that the real-time balance of supply and demand is met, and therefore the purpose of saving energy is achieved. Energy consumption, energy supply and energy storage are uniformly and cooperatively dispatched, multi-energy supply complementation in a micro-energy network system is achieved, the comprehensive utilization efficiency and stepped utilization of multi-energy supply in a micro-energy network are improved, emission is reduced, and local consumptionof energy is achieved.
Owner:INNER MONGOLIA UNIV OF SCI & TECH

Load curve adjustment-oriented active power distribution network simulation optimization operation method

A load curve adjustment-oriented active power distribution network simulation optimization operation method comprises the steps of obtaining basic data, setting convergence conditions, constructing and solving an upper-layer optimization model, constructing and solving a lower-layer first-stage optimization model and a lower-layer second-stage optimization model, and obtaining benefits of a virtual power plant, a scheduling scheme of resources in the virtual power plant, a final optimized load curve and the like. The method has the advantages that active management strategies and management means possibly adopted by a power distribution system dispatching center in the system operation process are considered on the basis of a traditional load curve prediction result, the dispatching potential of various active resources in a power distribution network is fully excavated, the virtual power plant serves as a regulation main body, the adjustment effect of the virtual power plant on the load curve under the active management strategy is simulated, the load curve is further optimized, and a load demand curve which better fits the actual operation of a power grid in the future is obtained, so that support is provided for follow-up accurate guidance of power distribution network planning construction and operation scheduling.
Owner:TIANJIN UNIV

Distributed photovoltaic cluster control method and device

The invention provides a distributed photovoltaic cluster control method and device. The distributed photovoltaic cluster control method comprises the steps of acquiring an active power of a distributed photovoltaic cluster and running data of a power distribution network; solving a hybrid integer second-order cone planning model by a solver, and controlling the distributed photovoltaic cluster according to a calculation result; and building the hybrid integer second-order cone planning model according to the active power of the distributed photovoltaic cluster and the running data of the power distribution network so that global optimal solution with low difficulty, high efficiency and high accuracy can be effectively solved. With the distributed photovoltaic cluster control method provided by the technical scheme of the invention, the photovoltaic output fluctuation can be effectively handled, the running safety of the power distribution network is ensured, and local absorption of distributed photovoltaics is achieved. The distributed photovoltaic cluster control method provided by the technical scheme of the invention employs a second-order cone loosing method to convert a non-convex non-linear constraint in power flow constraint to linear constraint in the hybrid integer second-order cone planning model, and the calculation efficiency is greatly improved.
Owner:CHINA ELECTRIC POWER RES INST +2

Wind-solar complementary clean heating system integrated with molten salt heat storage and efficient air source heat pump

The invention discloses a wind-solar complementary clean heating system integrated with molten salt heat storage and an efficient air source heat pump, and belongs to the field of clean energy use. The efficient air source heat pump is coupled with a molten salt heat storage system for heating, clean wind-solar energy local consumption can be achieved, and environment pollution brought by a conventional heating manner can be reduced. The electric drive air source heat pump is used for achieving wind power efficient use, molten salt energy storage is used for achieving continuous heating of fluctuating wind-solar energy, when wind energy and solar energy are sufficient, through solar energy, molten salt is preheated, wind power further dissolve and heat the molten salt, electric energy andoptical energy are converted into heat energy to be stored, when the wind energy is insufficient, the heat generated by the air source heat pump is insufficient of heating circular return water to rated heating temperature, through regulation of the heat stored in the molten salt heat storage system, the circular return water is reheated, and it is ensured that heating temperature reaches the rated need. Wind-solar energy local consumption can be achieved, and it can be ensured that heating is continuous and reliable.
Owner:BEIJING UNIV OF TECH

Local control method for energy management unit of household microgrid energy router

The invention discloses a local control method for an energy management unit of a household microgrid energy router, and aims to research and develop household microgrid energy router energy management unit equipment for a household microgrid system formed by household photovoltaic power generation equipment, lithium battery energy storage equipment and typical household appliances and for the problems of stable operation, cooperative control and the like of the system. When the commercial power fails, the household microgrid energy router energy management unit equipment is in local linkage with a DC lighting main control unit DCU to execute an MEMS simple scheduling command and allow the most appropriate household microgrid to supply power to the DC lighting LED, and the main-standby complementation of the AC power grid and the household light storage DC microgrid is achieved. The EMU integrates a single-chip microcomputer containing different operation control strategies, provides aset of control logic of the household microgrid in a grid-connected mode, an off-grid mode and a limited mode, achieves household-level microgrid routing energy management scheduling and coordinationcontrol of multi-voltage-level sequence AC / DC bus energy flow, and achieves maximum utilization of photovoltaic power generation.
Owner:天津大学(青岛)海洋工程研究院有限公司

Power distribution coordination control device and method for two low-voltage transformer areas

The invention provides a power distribution coordination control device for two low-voltage transformer areas, and the device comprises a main control module, a data collection module, and a transfer module; the device detects power distribution data in real time, and carries out the transfer control of the power in the two low-voltage transformer areas through the main control module, thereby improving the power supply reliability of a power supply system. The invention further provides a power distribution coordination control method for the two low-voltage transformer areas. The method comprises the following steps: dividing the two low-voltage transformer areas into a first transformer area and a second transformer area, acquiring power distribution data of the two low-voltage transformer areas, and comparing the power distribution data of the two low-voltage transformer areas; enabling the low-voltage transformer area with small load capacity in the first transformer area and the second transformer area to transfer power to the low-voltage transformer area with large load capacity, so local consumption of power in the two low-voltage transformer areas is realized, and the power supply quality of a low-voltage transformer area power supply system and the reliability of system operation are improved.
Owner:国网浙江省电力有限公司宁波市北仑区供电公司 +1

Aluminum water hydrogen production system and method capable of circularly and comprehensively utilizing electric energy to electrolyze aluminum

The invention discloses an aluminum water hydrogen production system capable of circularly and comprehensively utilizing electric energy to electrolyze aluminum, which comprises a renewable energy source power generation device, wherein the renewable energy source power generation device is used for supplying electric energy to a circulating aluminum powder production device; a circulating aluminum powder production device, wherein the circulating aluminum powder production device is used for electrolyzing aluminum oxide to obtain aluminum powder, and conveying the aluminum powder to an aluminum hydrogen production device; an aluminum water hydrogen production device, wherein the aluminum water hydrogen production device is used for carrying out hydrogen production reaction on the aluminumpowder to obtain hydrogen and aluminum oxide, drying and storing the hydrogen, drying the aluminum oxide, and returning the aluminum oxide to the circulating aluminum powder production device for continuous electrolysis to obtain the aluminum powder; the invention also discloses a method for producing hydrogen from aluminum water, according to the invention, the local elimination of renewable energy can be achieved; the transportation efficiency is improved by 10 times by changing gaseous hydrogen transportation into solid aluminum transportation, and the transportation safety is greatly enhanced; the deep coupling is achieved in the hydrogen production process and the aluminum hydroxide decomposition process, so that the heat energy is fully utilized, and the power consumption cost of on-site hydrogen production is reduced.
Owner:YINLONG ENERGY CO LTD

Load balancing electric automobile low voltage charging network system

The invention discloses a load balancing electric automobile low voltage charging network system, and belongs to the technical field of power electronics. According to the invention, the system realizes the low voltage distribution area load balancing by utilizing a low voltage direct current interconnection line, the load is balanced according to distribution transformer capacity, so that the load rate is reduced. The system can realize the on-site elimination of distributed mains power in the low voltage distribution area.
Owner:STATE GRID CORP OF CHINA +1

Photovoltaic thermal storage heating system and method thereof

The invention relates to a photovoltaic thermal storage heating system and a photovoltaic thermal storage heating method thereof, which relate to the technical field of photovoltaic thermal storage. The photovoltaic thermal storage heating system comprises a charging and discharging control module, a photovoltaic array, an energy storage module, an inverter and thermal storage heating equipment, wherein the photovoltaic array and the energy storage module are electrically connected with the charging and discharging control module, the thermal storage heating equipment is electrically connectedwith the charging and discharging control module by means of the inverter, and the charging and discharging control module is used for supplying power to the thermal storage heating equipment or theenergy storage module by means of the photovoltaic array or the mains supply. The photovoltaic thermal storage heating system and the photovoltaic thermal storage heating method disclosed by the invention can fully guarantee the continuous power supply under adverse weather conditions, can utilize the valley electricity for heating to avoid the peak demand for electricity at daytime, realizes on-site consumption of the photovoltaic power, and exerts the function of peak shaving and valley filling.
Owner:WUHAN RIXIN TECH

Photovoltaic power generation and power grid complementary direct current smelting furnace power supply system and method

The invention relates to a photovoltaic power generation and power grid complementary direct current smelting furnace power supply system and method, which belong to the field of electromagnetic metallurgical equipment. The system comprises a photovoltaic power generation system, an electric furnace power supply system and an electric furnace smelting system, wherein the photovoltaic power generation system comprises a photovoltaic electric field and an energy storage system. On the basis of distributed optimal control photovoltaic power generation system and power grid complementation, power is supplied to an electric furnace smelting system, and by detecting the power generation state of the photovoltaic power generation system and the smelting power demand of a direct-current smelting furnace in real time, whether the output of the photovoltaic power generation system is matched with the power demand of the smelting furnace or not is judged; therefore, the switching state of the photovoltaic power generation system and the electric furnace power supply system is adjusted, and the power demand of normal operation of the electric furnace smelting system is ensured. The power supply quality of the photovoltaic power generation system is improved, meanwhile, large-scale local consumption of photovoltaic power generation energy can be realized, the problems of high market consumption and power transmission cost and the like faced by photovoltaic power generation are effectively solved, and the power utilization cost of a production enterprise is greatly reduced.
Owner:CISDI ENG CO LTD

Ginseng plant factory planting and seedling raising system, and ginseng planting method

PendingCN114027065AClimate controlAchieving standardized standardsClimate change adaptationRenewable energy machinesAgricultural sciencePlant factory
The invention discloses a ginseng plant factory planting and seedling raising system, and ginseng planting method. The seedling raising system comprises: a plant factory building, a factory building roof photovoltaic, an artificial climate environment control unit, seedling raising frames, seedling raising trays, and illuminating lamps. The artificial climate environment control unit comprises an indoor temperature and humidity monitoring module, an indoor heating and cooling air conditioner module, and an indoor ventilation circulation module. A plurality of seedling raising frames which are arranged in parallel are evenly distributed in a plant factory building, each seedling raising frame comprises a plurality of layers of platforms, a plurality of seedling raising plates are arranged on each layer of each platform, and culture medium is arranged in each seedling raising plate. The illuminating lamps are arranged above each layer of each platform. By providing an artificial climate environment control unit that is low in construction cost and provided with a heat preservation structure, the climate in a climate chamber can be accurately controlled, it is guaranteed that production of the ginseng planting system is not affected by a natural environment and seasons, the adverse effect of extreme weather such as high temperature on ginseng growth is avoided, and the standardized standard of the planting technology is achieved.
Owner:HUANENG CLEAN ENERGY RES INST

Microgrid control method and system for multi-energy-flow complementary control

The invention provides a microgrid control method for multi-energy-flow complementary control. The method comprises the following steps: S1, locally consuming distributed energy of a microgrid; S2, carrying out peak clipping and valley filling of the AC / DC microgrid, and charging and carrying out discharging control through the charging and discharging time periods of a planned curve and the charging and discharging power values corresponding to the charging and discharging time periods according to a planned curve mode; and S3, freely switching between a grid-connected state and an off-grid state of the alternating-current and direct-current microgrid. Coordinated control over sources, networks, loads and storage of substations, data center stations, high-capacity comprehensive energy stations and the like is achieved, the big data mining technology is utilized, the operation strategy is adjusted in real time, the advantages of source, network, load and storage complementation are brought into full play, and the reliability of the microgrid and the comprehensive benefits of a power grid are improved.
Owner:JIAXING HENGCHUANG ELECTRIC POWER DESIGN & RES INST CO LTD +1

Circulating renewable energy source hydrolysis hydrogen production system and method based on aluminum energy storage

The invention discloses a circulating renewable energy source hydrolysis hydrogen production system based on aluminum energy storage, which comprises a renewable energy source power generation device,a circulating aluminum energy storage hydrogen production device and a hydrogenation device. The renewable energy power generation device is used for supplying electric energy to the circulating aluminum energy storage hydrogen production device; the circulating aluminum energy storage hydrogen production device is used for electrolyzing aluminum oxide to obtain aluminum powder, carrying out hydrogen production reaction on the aluminum powder to obtain hydrogen and aluminum oxide, outputting the hydrogen to the hydrogenation device, and recycling the aluminum oxide for continuous electrolysis; the hydrogenation device is used for drying and compressing the hydrogen and storing the hydrogen for use; the invention also discloses a circulating renewable energy source hydrolysis hydrogen production method based on aluminum energy storage, wherein the efficiency of electrolytic aluminum is over 90%, the hydrogen production efficiency of aluminum water can reach 95%, and the total hydrogenproduction efficiency can reach 80%, so that the efficient utilization of energy is achieved.
Owner:YINLONG ENERGY CO LTD

A micro-energy grid system and its collaborative optimization operation control method

The invention relates to a micro-energy network system and its collaborative optimization operation control method. By rationally configuring the energy supply side and the specific equipment contained in the energy conversion device, the micro-energy network system formed not only has a higher proportion of new energy access , through the optimized configuration of the energy storage device, the user's energy demand can be met through the power grid, heating network and gas network, and the basic balance between local energy production and user energy load can be achieved. Rolling optimization continuously adjusts the power output value of the controllable energy supply equipment in the micro-energy grid system, and makes the micro-energy grid system operate economically under the premise of meeting the real-time balance of supply and demand, so as to achieve the purpose of energy saving. Unified and coordinated scheduling of energy consumption, energy supply and energy storage, realize the complementarity of multiple energy supplies in the micro-energy network system, improve the comprehensive utilization efficiency and step utilization of multiple energy supplies in the micro-energy network, reduce emissions, and realize energy consumption on the spot.
Owner:INNER MONGOLIA UNIV OF SCI & TECH

Cooperative control method of energy router

PendingCN111740447AAchieve maximum efficiencyRealize association controlSingle network parallel feeding arrangementsAc network load balancingMicrogridSimulation
The invention provides a cooperative control method of an energy router. The energy router comprises an upper-layer server and a bottom-layer device. The method comprises the following steps of obtaining an expected state value and a current state value of the bottom-layer device, determining a difference value between the expected state value and the current state value, judging whether the difference value is within a target range or not, and if not, generating an adjustment instruction according to the difference value, adjusting the current state value of the bottom-layer device accordingto the adjustment instruction, and repeatedly executing the step of obtaining the expected state value and the current state value of the bottom-layer device until the difference value is within the target range. Because the state value of the bottom-layer device can be adjusted, the method can achieve the coordination control of different state values of the bottom-layer device in the energy router. Because the energy router occupies the core control position in the multi-source microgrid system, the method can solve a problem that the energy supply fluctuation of the multi-source microgrid system is larger.
Owner:YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST +1

A variable temperature control method for real-time consumption of photovoltaic power generation in data centers

The invention relates to a variable temperature control method for real-time consumption of photovoltaic power generation in a data center. By reading the real-time photovoltaic output value, the electric power reference value of the cooling equipment is adjusted, and then the cooling equipment of the data center is regulated through droop control and proportional integral control, so that Power consumption instantly matches photovoltaic power generation, realizes local consumption, stores in the data center computer room in the form of cold energy, reduces the temperature of the data center computer room or when the photovoltaic power generation is greatly reduced, appropriately increases the temperature of the data center computer room, and makes reasonable use of storage The function of cooling energy, thereby improving the utilization rate of renewable energy and reducing the consumption of city electricity. The invention comprehensively considers the random fluctuation characteristics of photovoltaic power generation and the flexible load characteristics of the cooling system of the data center, and fully exerts the controllability of the demand side load. Powered green data center with good technical economy.
Owner:TIANJIN UNIV

A control method for a new energy power supply system for urban rail traction network

The invention discloses a new energy power supply system and a control method for urban rail traction network, including an independent energy storage system located in the middle section of the line and a wind-solar-storage combined power generation system located in the depot or parking lot at the end of the line; according to offline prediction data, Obtain load forecast power and expected peak-to-valley values ​​from historical data, and then judge whether there is a load based on urban rail traffic data; judge operating conditions based on real-time voltage, and compare the load forecast power and expected peak-to-valley values ​​at the next moment to judge whether it is load operation According to the peak and valley state, different control strategies are determined by judging the results, so as to realize effective control of the energy storage device in the independent energy storage system, the wind-solar combined power generation device and the energy storage device in the wind-solar-storage combined power generation system. The invention can not only promote the consumption of renewable energy such as local scenery, but also improve grid voltage fluctuations, effectively recycle regenerative braking energy and at the same time cut peak loads and fill valleys, reduce urban rail operating costs, and have good economic benefits.
Owner:SOUTHWEST JIAOTONG UNIV

Container type biomass pressurized combustion power generation system capable of being applied to island

The invention discloses a container type biomass pressurized combustion power generation system capable of being applied to an island, and relates to the field of biomass combustion power generation. According to the route, biomass is pressurized and combusted to generate high-temperature flue gas, heat in the high-temperature flue gas is transferred to air through heat exchange, and the air drives a turbine to drive a power generator to generate power. And a movable power generation system with the generated electric energy capable of being stored in real time is included. Equipment in the system is installed in the same container, a gas compressor, the turbine and the power generator are coaxially arranged, and the pressure in a pressurized combustion furnace is cooperatively adjusted through the gas compressor and the turbine. The biomass is combusted in the pressurized combustion furnace, the generated high-temperature flue gas and the air are subjected to indirect heat exchange in a flue gas / air heat exchanger, and the heated air drives the turbine and drives the power generator to generate electric energy, and the produced electric energy is merged into an island power grid. The pressurized air discharged by the turbine exchanges heat with ash and then enters the pressurized combustion furnace to serve as an oxidizing medium for biomass combustion. The system is small in occupied area and can be placed on carrying equipment.
Owner:NANJING NORMAL UNIVERSITY

Simple heat insulation house plant factory coupled with photovoltaic power generation system and construction method

The invention provides a simple heat insulation house plant factory coupled with a photovoltaic power generation system and a construction method. The simple plant which is low in cost and provided with a heat insulation structure is constructed, photovoltaic power generation panels are laid on the whole roof area of the roof of the plant, therefore coupling of photovoltaic power generation and the whole area of the plant factory is achieved; the electric quantity generated by photovoltaic power generation is fully consumed by utilizing refined control of energy consumption and power supply of the plant factory; and an energy storage battery with a certain capacity is utilized to maintain circulating power utilization of an air conditioner and a nutrient solution of the plant factory at night, so that new energy photovoltaic power generation is consumed on site, and a peak regulation and frequency modulation auxiliary service signal of a power grid can be responded if the plant factory is connected with the power grid, so that the problems of power grid frequency fluctuation caused by new energy power generation fluctuation load and local consumption of new energy power generation are solved.
Owner:HUANENG CLEAN ENERGY RES INST

Control method for three-phase balance between photovoltaic power generation and power grid

A control method for three-phase balance between photovoltaic power generation and power grid, which is realized by a measurement and control device and a power grid management device. The steps are as follows: the first step is to judge the power flow direction of the power grid through the power read by the measurement and control device, and when the power is positive, the power grid supplies power to the load , when the power is negative, the photovoltaic power generation feeds power to the grid; the second step, the measurement and control device calculates the average value of the read three-phase grid power; the third step, when the three-phase power is unbalanced, judge the power supplied by the grid to the load The largest or the one-phase line with the largest feed power of photovoltaic power generation to the grid; the fourth step, calculate the power distribution coefficient of each grid control device in the three-phase unbalanced phase line; the fifth step, calculate the power distribution coefficient of each power grid control device in the three-phase unbalanced phase The power distribution value of the power grid management device; the sixth step, the measurement and control device controls the output or absorption power of the corresponding power grid management device according to the power distribution value of the power grid management device, so as to achieve the purpose of three-phase balance of power grid power.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI +1

Optimal operation control method and system of AC-DC distribution network with photovoltaic-storage complex

ActiveCN110994697BImprove the problem of large gap between load peak and valleyAchieving joint optimizationSingle network parallel feeding arrangementsEnergy storagePower flowMathematical model
The invention discloses an optimal operation control method for an AC and DC distribution network including an optical-storage complex, establishes a relevant mathematical model for installing PAE nodes in the distribution network, determines the objective function and constraint conditions of the PAE nodes, and optimizes the first-layer PAE nodes ; use the variable P after the first layer optimization PAE Instead of the active load of the installation node, generate a new state value of the node load; establish the AC and DC power flow model, VSC mathematical model, uncertainty model of fans, loads, and photovoltaics in the distribution network; determine the objective function of the second-layer robust optimization and constraints; establish a two-stage robust problem mathematical model, use the C&CG method to decompose the robust problem into a main problem and a sub-problem, and carry out the second-level optimization solution. Also disclosed is a system using the above method, including an objective function building module, a constraint condition setting module, a measurement module and a control module. The advantages are: the local consumption of renewable energy is realized, and the purpose of maximizing the utilization rate of renewable energy is achieved.
Owner:PINGYANG ELECTRIC POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER +3

Virtual power plant output coordinated game method integrating light, storage and combustion, and terminal device

ActiveCN114513016AGive full play to the charging and discharging abilityMeet power supply and demand balanceSingle network parallel feeding arrangementsEnergy storageNew energyMicro gas turbine
The invention relates to the field of new energy optimization scheduling, and provides a virtual power plant output coordination game method integrating light, storage and combustion and terminal equipment, and the method comprises the steps: constructing two or more than two virtual power plants and an energy storage coordination controller model of each virtual power plant; the virtual power plant comprises a photovoltaic power generation model, an energy storage power generation model and a micro gas turbine power generation model; obtaining the interactive electric quantity of the energy storage coordination controller model of each virtual power plant, and establishing a target function for maximizing the revenue of each virtual power plant; constructing a non-cooperative game model of the virtual power plant based on the objective function; and optimizing the non-cooperative game model by taking the interactive electric quantity of the energy storage coordination controller of each virtual power plant as a game strategy to obtain the optimal coordination power among the virtual power plants. According to the method, the optimal coordinated output among the virtual power plants is realized through the energy storage coordination controller model and the non-cooperative game algorithm, so that the stability, the yield rate and the energy utilization rate of each virtual power plant are improved.
Owner:NANJING UNIV OF SCI & TECH

A virtual power plant output coordination game method and terminal equipment integrating light storage and combustion

ActiveCN114513016BGive full play to the charging and discharging abilityMeet power supply and demand balanceSingle network parallel feeding arrangementsEnergy storageNew energyMicro gas turbine
In the field of new energy optimization dispatching of the present invention, a virtual power plant output coordination game method and terminal equipment integrating light storage and combustion are provided. The method includes: constructing two or more virtual power plants and energy storage coordination control of each virtual power plant The virtual power plant includes: photovoltaic power generation model, energy storage power generation model and micro gas turbine power generation model; obtain the interactive power of the energy storage coordination controller model of each virtual power plant, and establish an objective function for the purpose of maximizing the benefits of each virtual power plant ; Build a non-cooperative game model of virtual power plants based on the objective function; optimize the non-cooperative game model with the interactive power of the energy storage coordination controllers of each virtual power plant as a game strategy to obtain the optimal coordination power among each virtual power plant. The invention realizes the optimal coordination output among the virtual power plants through the energy storage coordination controller model and the non-cooperative game algorithm, thereby improving the stability, yield rate and energy utilization rate of each virtual power plant.
Owner:NANJING UNIV OF SCI & TECH

Method for producing hydrogen by electrolyzing water under driving of offshore wind power

The invention discloses a method for producing hydrogen through water electrolysis driven by offshore wind power, and belongs to the technical field of hydrogen production through water electrolysis. The method for producing hydrogen by electrolyzing water under the driving of offshore wind power comprises the following steps: S1, constructing a hydrogen production plant on an island, and producing hydrogen under the driving of offshore wind power; the real-time hydrogen production rate is calculated according to the power generation power of the wind power plant, the maximum hydrogen production flow in one day is calculated according to the real-time hydrogen production rate, and a hydrogen production plant of the corresponding scale is built; s2, according to the gas transmission flow and the gas transmission pressure, a seabed hydrogen transmission pipeline is built; the diameter of a hydrogen conveying pipeline is determined according to the maximum hydrogen production flow of the hydrogen production plant; and S3, the hydrogen prepared on the island is conveyed to a thermal power plant on the shore through a hydrogen conveying pipeline, and hydrogen energy power generation is conducted. By adopting the method for producing hydrogen by electrolyzing water under the driving of offshore wind power, the problems of high cost and difficult maintenance of a power transmission line caused by directly conveying the offshore wind power in the prior art can be solved.
Owner:NORTHEAST DIANLI UNIVERSITY

Optical storage complementary self-powered warehouse-type energy storage system

The invention belongs to the technical field of electrochemical energy storage application, and in particular relates to an optical storage complementary self-powered warehouse-type energy storage system. An optical storage complementary power generation and supply system is used to provide self-use power for the energy storage system to reduce the cost of electricity. At the same time, a photovoltaic panel array is placed on the top of an energy storage container, which can play the role of sun protection and shade. New energy power supply and energy storage backup power supply of the self-consumption of the warehouse-type energy storage system, local consumption of photovoltaic power generation and the grid connection of surplus power are realized. The shortcomings of temperature rise incontainers, increased scale and power consumption of a temperature control system, and increased hidden dangers of safe operation of batteries of the warehouse-type energy storage system usually placed in the open air are overcome. The use of optical storage complementary power generation increases the use of new energy, prevents and reduces the disadvantage of temperature rise in containers caused by direct sunlight, reduces investment and power consumption, improves efficiency and commercial returns. In addition, a backup power supply is provided when a micro grid is off-grid, which not only saves UPS investment, but also facilitates the realization of black start.
Owner:周锡卫
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