WO2018232869A1 - Procédé et dispositif d'alimentation électrique intelligente - Google Patents

Procédé et dispositif d'alimentation électrique intelligente Download PDF

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Publication number
WO2018232869A1
WO2018232869A1 PCT/CN2017/096529 CN2017096529W WO2018232869A1 WO 2018232869 A1 WO2018232869 A1 WO 2018232869A1 CN 2017096529 W CN2017096529 W CN 2017096529W WO 2018232869 A1 WO2018232869 A1 WO 2018232869A1
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WIPO (PCT)
Prior art keywords
power supply
new energy
power
grid
mains
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PCT/CN2017/096529
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English (en)
Chinese (zh)
Inventor
杜光东
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深圳市盛路物联通讯技术有限公司
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Publication of WO2018232869A1 publication Critical patent/WO2018232869A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H02J2300/24—The renewable source being solar energy of photovoltaic origin
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

Definitions

  • the present invention relates to the field of Internet of things, and in particular, to an intelligent power supply method and apparatus.
  • the power supply is generally powered by the mains, but when there is a fault in the power line, it is impossible to provide normal power supply to the users on the faulty line, or when the peak of power consumption is insufficient, the power supply is insufficient and the voltage is unstable. The user is unable to use the electrical equipment normally.
  • the present invention provides an intelligent power supply method and apparatus.
  • an embodiment of the present invention provides an intelligent power supply method, where the method includes:
  • the new energy is connected to the network according to a preset new energy grid connection scheme.
  • the intelligent power supply method provided by the embodiment of the present invention provides a stable and reliable power supply to the user through the grid-connecting scheme of the new energy power generation by fully utilizing the new energy power supply system, and solving the utility power single source, in the case that the commercial power cannot meet the normal power supply.
  • the drawbacks of power supply are to protect the user's electricity demand and improve user satisfaction.
  • the method further includes receiving the filing information of the new energy power supply system, and when the mains power supply abnormality occurs, performing the grid connection scheme according to the principle of the nearest grid connection.
  • the filing information includes a system number, a system installation location, and a system power supply capability.
  • the location information of the abnormal power supply is obtained according to the mains power supply information, and the new energy power supply system with the power supply capability closest to the line position corresponding to the abnormal power supply position information is controlled to be merged into the mains power grid.
  • the method further comprises real-time monitoring the energy storage state of the energy storage device.
  • the power generated by the new energy power supply system is preferentially stored to the energy storage device, and the energy storage device is maintained. In full state;
  • the new energy supply system is preferentially connected to the grid.
  • the energy storage equipment is connected to the grid.
  • the energy is supplied to the user through the energy storage device.
  • the energy storage device by monitoring the state of the energy storage device in real time, it is preferred to ensure that the energy storage device is in a full state. Under the condition that the utility power supply is abnormal and the new energy supply system is not working normally, the user's power demand can also be guaranteed.
  • the method further includes receiving a registration request of a user of the home solar power supply system, establishing a user account according to the registration request, and receiving the amount of electricity measured by the metering device in the solar power supply system when the home solar power supply system supplies power to the AC power grid.
  • Data, the compensation fee is calculated according to the power data and the unit price of the power, and the compensation fee is stored under the account of the corresponding user.
  • the intelligent power supply method provided by the foregoing embodiment registers a user to establish a user account when the new energy power supply system is a home solar power supply system, and records the power quantity data of the provided power when detecting that the home solar power supply system supplies power to the power grid.
  • the power data is uploaded to the server, and the grid-connected data generated by each household solar power supply system is stored under the corresponding user account, and the server calculates the compensation fee according to the power data, and stores it in the user account, thereby improving the connection of the household solar power supply system. Enthusiasm to improve the power efficiency of home solar power systems and avoid energy waste.
  • the method further includes receiving a grid connection data query request, the query request including a second time range;
  • the intelligent power supply method provided by the foregoing embodiment queries the grid-connected data according to the query request of the user, and feeds the grid-connected data to the user, so that the user can clearly understand the grid connection situation of the home solar power generation system and clearly understand the revenue, and improve the user.
  • the enthusiasm of home solar power systems connected to the grid
  • the present invention provides an intelligent power supply device, the device comprising:
  • An obtaining unit configured to obtain utility power supply information
  • the processing unit is configured to determine whether the utility power supply information meets an abnormal power supply condition, and if the abnormal power supply condition is met, the new energy is connected to the network according to a preset new energy grid connection scheme.
  • the intelligent power supply device provided by the embodiment of the present invention provides a stable and reliable power supply to the user through the grid-connecting scheme of the new energy power generation by fully utilizing the new energy power supply system, and the utility model can solve the problem of the single power supply.
  • the drawbacks of power supply are to protect the user's electricity demand and improve user satisfaction.
  • the acquiring unit in the device is further configured to receive the filing information of the new energy power supply system, and the processing unit executes the grid connection scheme according to the principle of the nearest grid connection when the utility power supply abnormality occurs.
  • the filing information includes a system number, a system installation location, and a system power supply capability.
  • the processing unit acquires the location information of the abnormal power supply according to the mains power supply information, and controls the new energy supply system with the power supply capability closest to the line position corresponding to the abnormal power supply position information to be merged into the mains power grid. .
  • the device further includes a monitoring unit configured to monitor the energy storage state of the energy storage device in real time, and the processing unit is configured to preferentially store the power generated by the new energy power supply system when the utility power supply is normal and the new energy power supply system works normally. To the energy storage device and keep the energy storage device in a full state;
  • the new energy supply system is preferentially connected to the grid.
  • the energy storage equipment is connected to the grid.
  • the energy is supplied to the user through the energy storage device.
  • the device further includes a registration unit, configured to receive a registration request of a user of the home solar power supply system, establish a user account according to the registration request, and measure the solar power supply system when the household solar power supply system supplies power to the AC power grid.
  • the device measures the delivered power data, and uploads the power data to the server.
  • the server calculates the compensation fee according to the power data and the power unit price, and stores the compensation fee under the account of the corresponding user.
  • the intelligent power supply device registers the user to establish a user account when the new energy power supply system is a home solar power supply system, and records the power quantity data of the provided power when detecting that the home solar power supply system supplies power to the power grid.
  • the power data is uploaded to the server, and the grid-connected data generated by each household solar power supply system is stored under the corresponding user account, and the server calculates the compensation fee according to the power data, and stores it in the user account, thereby improving the connection of the household solar power supply system. Enthusiasm to improve the power efficiency of home solar power systems and avoid energy waste.
  • the device further includes a query unit, configured to receive a grid-connected data query request, where the query request includes a second time range, and acquire, according to the grid-connected data query request, the grid-connected data in the second time range, The result of the query is returned to the client.
  • a query unit configured to receive a grid-connected data query request, where the query request includes a second time range, and acquire, according to the grid-connected data query request, the grid-connected data in the second time range, The result of the query is returned to the client.
  • the intelligent power supply device queries the grid-connected data according to the query request of the user, and feeds the grid-connected data to the user, so that the user can clearly understand the grid connection situation of the home solar power generation system and clearly understand the revenue, and improve the user.
  • the enthusiasm of home solar power systems connected to the grid
  • FIG. 1 is a structural diagram of an intelligent power supply system according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a power supply information collection system according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural view of a solar power generation system according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a solar power generation system according to another embodiment of the present invention.
  • FIG. 5 is a signaling interaction diagram of an intelligent power supply method according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a smart power supply method according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of a smart power supply method according to another embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of an intelligent power supply device according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of an intelligent power supply device according to another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of an intelligent power supply device according to another embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of an intelligent power supply device according to another embodiment of the present invention.
  • FIG. 1 is a structural diagram of an intelligent power supply system according to an embodiment of the present invention.
  • the system architecture includes at least: an external terminal and an Internet of Things system, wherein the Internet of Things system includes an Internet of Things access device, an Internet of Things interconnection device, an Internet of Things security device, and an Internet of Things application server.
  • the Internet of Things access device includes an Internet of Things remote access interface and an Internet of Things local access interface for establishing an external terminal and an Internet of Things service subsystem through the Internet of Things remote access interface and the Internet of Things local access interface. Connection.
  • the Internet of Things interconnection device includes an Internet of Things interconnection interface for connecting with an Internet of Things access device, an IoT security device, an Internet of Things application server, and an internal terminal, respectively, for providing the Internet of Things connection through the Internet of Things interconnection interface.
  • the external terminal may include a signal acquisition system 110 installed on different nodes of the power grid for collecting utility power supply information, uploading the collected utility power supply information to the Internet of Things application server, and further including the new energy supply system 120. And executing the grid connection scheme according to the control instruction sent by the Internet of Things application server.
  • the new energy supply system may include a solar power supply system or a wind power supply system. New energy supply systems can be centralized or distributed. Taking a solar power system as an example, a solar power generation system can be installed in an open space, or a solar power generation system can be installed on the top of a city building.
  • the signal acquisition system 110 may include a main control station 210, a sub-control station 220 of each partition controlled by the main control station, and a plurality of control terminals 230 connected to the sub-control station.
  • the main control station obtains the real-time data of the power grid, and detects the load status of all the power receiving channels of the current network; the control terminals of each partition detect the power data of the partition (such as the bus voltage) in real time, and report the detected power data to the sub-control station in real time.
  • the sub-control station uploads the power data of each partition to the main control station, and the main control station uploads the circuit data to the application server.
  • the main control station 210 includes a server, a communication device, a display device, and a data storage device; the control signal of the communication device receiving the server communicates with the sub-control station; the display device displays the grid parameter acquired by the server; and the data storage device saves the grid parameter.
  • the sub-control station includes an industrial computer and a frequency converter; the frequency converter is connected to the auxiliary power grid, receives the signal sent by the industrial computer to adjust the working frequency of the auxiliary power grid; the frequency converter also receives the signal sent by the industrial computer to obtain the working parameters of the auxiliary power grid to be sent to The industrial computer receives the working parameters of the auxiliary machine of the power grid and sends it to the control center; the industrial computer also controls the frequency converter to obtain the power saving of the power grid and sends it to the main control station.
  • the power supply information collection system is a mature technology, and the specific working principles are not described here.
  • Each new energy supply system is pre-registered on the application server.
  • the record information includes the system number, the system installation location, and the system power supply capability.
  • the application server obtains the grid fault location and executes according to the principle of the nearest grid connection.
  • the grid-connecting scheme specifically obtains the system number of the new energy system closest to the grid fault location according to the grid fault location and the filing information of each new energy system, and then generates a control command including the system number according to the system number, and sends the control command to the corresponding
  • the new energy supply system controls the new energy supply system to connect to the grid.
  • the solar power generation system mainly includes: a solar battery module 310 (array), a battery 320,
  • the inverter 330 is composed of a controller 340 and the like.
  • the solar cell module 310 and the battery 320 are power supply systems, and the inverter 330 and the controller 340 are control protection systems.
  • the solar cell and the battery constitute the power supply unit of the system, so the battery performance directly affects the system operating characteristics.
  • Battery unit Due to technical and material reasons, the power generation of a single battery is very limited.
  • the practical solar cell is a battery system composed of a single battery in series or in parallel, called a battery assembly (array).
  • a single cell is a silicon crystal diode.
  • According to the electronic characteristics of the semiconductor material when sunlight is irradiated onto a PN junction composed of two different conductivity types of P-type and N-type conductivity semiconductor materials, under certain conditions. Solar radiation is absorbed by the semiconductor material, producing non-equilibrium carriers, electrons and holes, in the conduction and valence bands.
  • the direct current generated by the solar cell first enters the storage of the battery, and the characteristics of the battery affect the working efficiency and characteristics of the system.
  • Battery technology is very mature, but its capacity is affected by the end of electricity demand, sunshine time (power generation time). Therefore, the battery watt hour capacity and ampere-hour capacity are determined by the predetermined continuous daylight-free time.
  • the main function of the controller is to keep the solar power system near the maximum power point of power generation for maximum efficiency.
  • the charging control usually adopts pulse width modulation technology, that is, PWM control mode, so that the whole system always runs in the vicinity of the maximum power point Pm.
  • Discharge control mainly refers to when the battery is short of power and the system is faulty, such as when the battery is open or reversed.
  • Inverter The main function is to invert the DC power of the battery into AC power.
  • the SPWM processor is generally modulated, filtered, boosted, etc., and the sinusoidal AC power matched with the lighting load frequency f, the rated voltage UN, etc. is used by the end user of the system.
  • the solar power generation system further includes an access switch 350 and a communication component 360, the inverter 330 is connected to the access switch 350, and the access switch 350 is connected to the communication component 360 (such as a wireless communication device).
  • the device is configured to receive a control instruction issued by an IoT application server.
  • the solar power generation system is connected to the mains power grid, and the specific connection nodes can be set according to actual needs, such as the transmission terminal of the high-voltage transmission line, the sub-nodes of the city power grid, and the grid-entry nodes.
  • the above solar power generation system may further include a lightning protection system, a smart meter, a distribution box, and the like.
  • the solar power generation system is a mature technology, and the above is only one specific embodiment, and other implementations are also within the protection scope of the present invention, and details are not described herein again.
  • FIG. 5 is a signaling interaction diagram of an intelligent power supply method according to an embodiment of the present invention.
  • the power supply information collecting system 510 collects the utility power supply information, and uploads the utility power supply information to the Internet of Things application server 520; the Internet of Things application server 520 obtains the utility power supply information, and determines whether the utility power supply information satisfies the abnormal power supply condition, and satisfies
  • the new energy is connected to the grid according to the preset new energy grid-connecting scheme, specifically including generating a control command according to the new energy grid-connecting scheme, and transmitting the control command to the corresponding new energy power supply system 530 to control the new energy source.
  • the power supply system is connected to the grid.
  • FIG. 6 is a schematic flowchart of an intelligent power supply method according to an embodiment of the present invention. Steps in the method The main body of execution is the server. The following is not specified. The main body of the method is the server. As shown in FIG. 6, the following method is performed by a server, and the method includes:
  • S620 Determine whether the utility power supply information meets an abnormal power supply condition, and if the abnormal power supply condition is met, the new energy is connected to the network according to a preset new energy grid connection scheme.
  • each new energy supply system is pre-registered at the server, and when a mains supply abnormality occurs, the grid connection scheme is implemented according to the principle of the nearest grid connection.
  • each new energy supply system is pre-registered at the server, and the record information includes the system number, the system installation location, and the system power supply capability.
  • the server can obtain the location information of the abnormal power supply according to the mains power supply information. If a power supply line fails, all users on the line will not be able to obtain the mains supply. At this time, the distance fault can be controlled.
  • the new energy supply system with the nearest line and power supply capability is merged into the mains grid; if one or several users access the mains abnormality, the new energy supply system that controls the roof of the user’s building is merged into the grid.
  • the user provides power supply. Adopting the principle of nearest grid connection, when the power supply abnormality occurs, the nearest new energy supply system that meets the requirements is connected to the grid to reduce power loss and improve economic efficiency.
  • the traditional power grid includes the power generated by the power plant, boosted by the substation, and then the high-voltage power is transmitted through the high-voltage line.
  • the voltage needs to be lowered. Therefore, the substation needs to be stepped down, and the circuit after the step-down is divided into multiple
  • a new energy power generation system can be set at each node of the above power grid.
  • a solar power supply system can be installed near the power plant. When the power plant fault is detected and cannot be normally operated, the solar power supply system at the location can be incorporated into the power grid.
  • the power grid provides a power source or cooperates with the power plant to provide a power source for the voltage; or after the step-down, an access node is provided on the line of the user's transmission circuit, and when some transmission line sends a fault, the solar energy closest to the fault location is
  • the power generation system is integrated into the power grid to provide power supply to the user; or the power supply failure occurs before the power is put into the household, and the power can be supplied to the power grid through the solar power generation system installed at the top of the building.
  • the intelligent power supply method provided by the embodiment of the present invention provides a stable and reliable power supply to the user through the grid-connecting scheme of the new energy power generation by fully utilizing the new energy power supply system, and solving the utility power single source, in the case that the commercial power cannot meet the normal power supply.
  • the drawbacks of power supply are to protect the user's electricity demand and improve user satisfaction.
  • FIG. 7 is a schematic flowchart of an intelligent power supply method according to an embodiment of the present invention. As shown in FIG. 7, the method includes:
  • S710 Acquire power supply information, where the utility power information includes a utility signal and a utility voltage value;
  • S720 Determine whether the mains power supply information meets an abnormal power supply condition, where the abnormal power supply condition includes no mains signal or the mains voltage value exceeds a preset range;
  • the preset new energy grid-connecting scheme includes providing power by using new energy power generation
  • the preset new energy grid-connecting scheme includes jointly providing power by using new energy power generation and utility power.
  • the utility power supply information may include the presence or absence of the mains signal and the mains voltage value; and a solution corresponding to different abnormal conditions is given, and if there is no mains signal, the passage is completely passed.
  • New energy power generation provides electricity to users. If the mains voltage is unstable and exceeds the preset range, it will provide users with new energy power generation and utility power. Electrical energy.
  • the intelligent power supply method provided by the foregoing embodiment provides different solutions for different abnormal situations, has strong pertinence, and has high grid connection efficiency, can effectively protect the user's power demand, avoid economic loss, and improve user experience.
  • the smart power supply method further includes: when the utility power supply is normal, controlling the new energy power supply system to store the electrical energy in the energy storage device, when storing energy When the device is full of energy, the remaining energy is incorporated into the grid.
  • the state of the energy storage device is first ensured to be a state of full energy storage, and if the electrical energy continues to be generated after being filled, the remaining generated electrical energy is incorporated into the utility power grid.
  • the intelligent power supply method provided by the embodiment first ensures that the state of the energy storage device is a full state when the new energy system works, and then when the new energy system is not working, such as when the solar energy system is not working at night, if the utility power supply occurs. Anomalies can also be provided by the energy storage device being connected to the grid. In addition, after the energy storage device is full of electric energy, if the new energy system continues to work, the generated electric energy is merged into the power grid to avoid waste of energy.
  • the smart power supply method provides power to the user through new energy power generation, including: determining whether the new energy power supply system works normally, and when the new energy power supply system During normal operation, the user is provided with electric energy through the new energy supply system and/or the energy storage device, and when the new energy supply system is not working normally, the energy is supplied to the user through the energy storage device;
  • the power supply by the new energy power generation and the main power supply includes: judging whether the new energy power supply system works normally, and when the new energy power supply system works normally, the new energy power supply system and/or the energy storage device and the commercial power supply jointly provide power to the user. When the new energy supply system is not working properly, the energy storage device and the mains supply together provide power to the user.
  • the solar power system works normally. At this time, if there is no mains signal in the abnormality of the mains supply, the solar power system is merged into the mains grid.
  • the electric grid provides electrical energy; if there is no mains signal, but the mains supply is insufficient, if the current time is daytime, the new energy supply system is used to supply power with the mains, and the solar power system is merged into the mains grid.
  • the solar power system Cooperate with the mains to supply electricity, or integrate the energy storage equipment into the mains grid, provide electricity with the mains, or integrate the two into the mains grid, and provide electricity with the mains; if the current time is night, the solar power system is not In normal work, it is merged into the mains grid through energy storage equipment, and it is combined with the mains. Electricity.
  • the intelligent power supply method provided by the embodiment provides a fast and efficient solution to ensure normal operation for the user when the utility power supply is abnormal according to the information of the commercial power supply, the operation of the new energy supply system, and the state of the energy storage device. Power supply.
  • the intelligent power supply method further includes: acquiring historical power supply historical data, and acquiring an abnormal power supply occurrence probability greater than a preset value according to the historical data.
  • the first time range starts the new energy grid-connection scheme within a preset time before the start time of the first time range, and continues until the termination time of the first time range.
  • the temperature is 19:00-21:00 in the northern part of China, and the voltage may be unstable in some areas.
  • the new energy is connected to the grid, and the new energy supply and the mains supply are used to supply power.
  • the summer may 19:30-21:30 is the peak of power consumption, and voltage instability may occur in some areas. You can control the area where voltage instability may occur before 19:30, and use new energy to connect to the grid. Energy supply and mains supply are combined with power supply.
  • the method further includes the step of buffering the power supply history data, specifically: opening a memory space in the server memory, storing historical data of different sampling periods; collecting data from the real-time database according to the sampling period, and storing the sampled data To memory space.
  • the Query data field stores the historical data of the time period to be queried, and if it exists, directly reads the historical data in the memory space. If not, the query history database obtains the time period to be queried. historical data.
  • the cache time can be customized, such as 5 days, 15 days or one month.
  • the intelligent power supply method predicts the abnormality of the mains supply according to the historical power supply data, and starts the grid connection scheme before the predicted time to avoid the grid connection after the abnormality occurs, causing losses to the user, especially some factories. If the power supply is abnormal, the machine will not operate normally, and the damage may be huge and irreparable.
  • the method is connected to the network in advance to avoid abnormality, ensure normal power supply, reduce user loss, and improve user experience.
  • the smart power supply method further includes real-time monitoring of an energy storage state of the energy storage device, when the utility power supply is normal and the new energy power supply system works normally.
  • the power generated by the new energy supply system is preferentially stored to the energy storage device, and the energy storage device is in a full state; when the utility power supply is abnormal and the new energy supply system is working normally, the new energy supply system is preferentially connected to the network.
  • the supply of the new energy supply system is insufficient, the energy storage equipment is connected to the grid for power supply; when the utility power supply is abnormal and the new energy supply system is not working normally, the energy is supplied to the user through the energy storage device.
  • the intelligent power supply method monitors the state of the energy storage device in real time, and preferentially ensures that the energy storage device is in a full state, and can ensure the abnormality of the utility power supply and the new energy supply system is not working normally, and can also protect the user. Electricity demand.
  • the registered new energy power supply system is a home solar power supply system
  • the user of the home solar power supply system is registered in the server in advance, and is powered by the home solar power.
  • the system supplies electric energy to the AC power grid
  • it receives the electricity quantity data measured by the metering device in the solar power supply system, calculates the compensation cost according to the power quantity data and the power unit price, and stores the compensation fee under the account of the corresponding user.
  • the amount under the user account can be used as the balance of the electricity bill.
  • the user can deduct the account balance, and the user can also withdraw the amount in the account balance.
  • the home solar power supply system may include a solar panel connected to the first DC power meter, the first DC power meter is connected to the controller, and the controller is connected to the second DC power meter, the second DC The power meter is connected to the battery, the controller is connected to the grid-connected inverter, the grid-connected inverter is connected to the power distribution box, the power distribution box is connected to the user energy meter, the user energy meter is connected to the electrical appliance, the distribution box is connected to the AC power grid, and the solar panel is connected.
  • a lightning protection system and a bidirectional converter are provided, the bidirectional converter is connected with a separate load, the distribution box is connected with a grid side load, and the distribution box is also connected with the wireless communication device.
  • the home solar power supply system can be remotely controlled by the server and connected to the grid. It can also be manually controlled from the grid.
  • the intelligent power supply method registers a user to establish a user account when the new energy power supply system is a home solar power supply system, and records the power quantity data of the provided power when detecting that the home solar power supply system supplies power to the power grid. Upload the electricity data to the server and store the grid-connected data generated by each household solar power supply system. Stored under the corresponding user account, the server calculates the compensation fee based on the power data and stores it under the user account, which improves the enthusiasm of the home solar power supply system and improves the power supply efficiency of the household solar power supply system and avoids energy waste.
  • the method further includes receiving a grid connection data query request, the query request including a second time range;
  • the grid-connected data in this embodiment may include a grid connection start time and an end time, a total power amount provided during the grid time, a power unit price, and a total revenue generated by the grid connection.
  • the intelligent power supply method provided by the foregoing embodiment queries the grid-connected data according to the query request of the user, and feeds the grid-connected data to the user, so that the user can clearly understand the grid connection situation of the home solar power generation system and clearly understand the revenue, and improve the user.
  • the enthusiasm of home solar power systems connected to the grid
  • the smart power supply method according to an embodiment of the present invention is described in detail above with reference to FIGS. 1-7.
  • the smart power supply apparatus according to an embodiment of the present invention is described in detail below with reference to FIGS. 8-11.
  • FIG. 8 is a schematic structural diagram of an intelligent power supply device according to an embodiment of the present invention. As shown in FIG. 8, the apparatus includes an acquisition unit 801 and a processing unit 802.
  • the obtaining unit 801 is configured to obtain the mains power supply information; the processing unit 802 is configured to determine whether the mains power supply information meets the abnormal power supply condition, and implement the new energy according to the preset new energy grid connection scheme if the abnormal power supply condition is met. On-grid.
  • each new energy supply system is pre-registered at the server, and when a mains supply abnormality occurs, the grid connection scheme is implemented according to the principle of the nearest grid connection.
  • each new energy supply system is pre-registered at the server, and the record information includes the system number, the system installation location, and the system power supply capability.
  • the server can obtain the location information of the abnormal power supply according to the mains power supply information. If a power supply line fails, all users on the line will not be able to obtain the mains supply. At this time, the distance fault can be controlled.
  • the new energy supply system with the nearest line and power supply capability is merged into the mains grid; if one or several users access the mains abnormality, the new energy supply system that controls the roof of the user’s building is merged into the grid.
  • the user provides power supply. Adopting the principle of nearest grid connection, when the power supply abnormality occurs, the nearest new energy supply system that meets the requirements is connected to the grid to reduce power loss and improve economic efficiency.
  • the traditional power grid includes the power generated by the power plant, boosted by the substation, and then the high-voltage power is transmitted through the high-voltage line.
  • the voltage needs to be lowered. Therefore, the substation needs to be stepped down, and the circuit after the step-down is divided into multiple
  • a new energy power generation system can be set at each node of the above power grid.
  • a solar power supply system can be installed near the power plant. When the power plant fault is detected and cannot be normally operated, the solar power supply system at the location can be incorporated into the power grid.
  • the power grid provides a power source or cooperates with the power plant to provide a power source for the voltage; or after the step-down, an access node is provided on the line of the user's transmission circuit, and when some transmission line sends a fault, the solar energy closest to the fault location is
  • the power generation system is integrated into the power grid to provide power supply to the user; or the power supply failure occurs before the power is put into the household, and the power can be supplied to the power grid through the solar power generation system installed at the top of the building.
  • the intelligent power supply device provided by the embodiment of the present invention cannot satisfy the commercial power supply by fully utilizing the new energy supply system.
  • the grid-connected scheme of power generation through new energy provides users with stable and reliable power supply, solves the drawbacks of single power supply of the mains, guarantees the user's power demand, and improves user satisfaction.
  • the mains power supply information acquired by the obtaining unit 801 in this embodiment includes a mains signal presence and a mains voltage value; and the processing unit 802 Determining whether the mains power supply information satisfies an abnormal power supply condition, the abnormal power supply condition includes a no-mains signal or a mains voltage value exceeding a preset range; when an abnormal power supply condition without a mains signal is met, the preset The new energy grid-connecting scheme includes providing power through new energy power generation; when the utility power voltage value exceeds a preset range, the preset new energy grid-connecting scheme includes providing power through the new energy power generation and the commercial power.
  • the utility power supply information may include the presence or absence of the mains signal and the mains voltage value; and a solution corresponding to different abnormal conditions is given, and if there is no mains signal, the passage is completely passed.
  • New energy power generation provides electricity to users. If the mains voltage is unstable and exceeds the preset range, the new energy generation and the mains supply together provide power to the users.
  • the intelligent power supply device provided by the foregoing embodiment provides different solutions for different abnormal situations, has strong pertinence and high grid connection efficiency, can effectively protect the user's power demand, avoid economic loss, and improve user experience.
  • the processing unit 802 of the smart power supply device is further configured to control the new energy power supply system to store the electrical energy in the energy storage device when the utility power supply is normal.
  • the energy storage device is full of electrical energy, the remaining electrical energy is integrated into the power grid.
  • the state of the energy storage device is first ensured to be a state of full energy storage, and if the electrical energy continues to be generated after being filled, the remaining generated electrical energy is incorporated into the utility power grid.
  • the intelligent power supply device provided by the embodiment first ensures that the state of the energy storage device is full when the new energy system works, and then when the new energy system is not working, such as when the solar system is not working at night, such as the mains supply Anomalies can also be provided by the energy storage device being connected to the grid. In addition, after the energy storage device is full of electric energy, if the new energy system continues to work, the generated electric energy is merged into the power grid to avoid waste of energy.
  • the processing unit 802 of the smart power supply device provides power to the user by using new energy to generate power, including: determining whether the new energy supply system works normally, when new When the energy supply system works normally, the power is supplied to the user through the new energy supply system and/or the energy storage device, and when the new energy supply system is not working normally, the energy is supplied to the user through the energy storage device;
  • the power supply by the new energy power generation and the main power supply includes: judging whether the new energy power supply system works normally, and when the new energy power supply system works normally, the new energy power supply system and/or the energy storage device and the commercial power supply jointly provide power to the user. When the new energy supply system is not working properly, the energy storage device and the mains supply together provide power to the user.
  • the solar power system works normally. At this time, if there is no mains signal in the abnormality of the mains supply, the solar power system is merged into the mains grid.
  • the electric grid provides electrical energy; if there is no mains signal, but the mains supply is insufficient, if the current time is daytime, the new energy supply system is used to supply power with the mains, and the solar power system is merged into the mains grid.
  • the intelligent power supply device provided by the embodiment provides a fast and efficient solution to ensure normal operation of the user when the utility power supply is abnormal according to information such as the power supply condition of the utility power, the working condition of the new energy supply system, and the state of the energy storage device. Power supply.
  • the acquiring unit 801 is further configured to acquire the mains power supply historical data, and the processing unit 802 obtains an abnormality according to the historical data.
  • the first time range in which the power generation occurrence probability is greater than the preset value, and the new energy grid-connection scheme is started within a preset time before the start time of the first time range, and continues to the termination time of the first time range.
  • the temperature is 19:00-21:00 in the northern part of China, and the voltage may be unstable in some areas.
  • the new energy is connected to the grid, and the new energy supply and the mains supply are used to supply power.
  • 19:30-21:30 is the peak of power consumption, and some areas may experience voltage instability. You can control the area where voltage instability may occur before 19:30. Operation, using new energy supply and mains power supply with power supply.
  • the method further includes the step of buffering the power supply history data, specifically including opening a memory space in the server memory, storing historical data of different sampling periods, collecting data from the real-time database according to the sampling period, and storing the sampled data in the memory. space.
  • the Query data field stores the historical data of the time period to be queried, and if it exists, directly reads the historical data in the memory space. If not, the query history database obtains the time period to be queried. historical data.
  • the cache time can be customized, such as 5 days, 15 days or one month.
  • the intelligent power supply device predicts the abnormality of the mains supply according to the historical power supply data, and starts the grid connection scheme before the predicted time to avoid the grid connection after the abnormality occurs, causing losses to the user, especially some factories. If the power supply is abnormal, the machine will not operate normally, and the damage may be huge and irreparable.
  • the method is connected to the network in advance to avoid abnormality, ensure normal power supply, reduce user loss, and improve user experience.
  • the smart power supply device further includes a monitoring unit 803, configured to monitor the energy storage state of the energy storage device in real time, and The monitoring information is sent to the processing unit 802.
  • the processing unit 802 is configured to preferentially store the power generated by the new energy power supply system to the energy storage device when the utility power supply is normal and the new energy power supply system works normally, and keep the energy storage device in storage. Full state; when the mains supply is abnormal and the new energy supply system works normally, the new energy supply system is preferentially connected to the grid. When the supply of the new energy supply system is insufficient, the energy storage equipment is connected to the grid; when the mains supply is abnormal and new When the energy supply system is not working properly, the energy is supplied to the user through the energy storage device.
  • the intelligent power supply device monitors the state of the energy storage device in real time, and preferentially ensures that the energy storage device is in a full state, and can ensure the abnormality of the utility power supply and the new energy supply system is not working normally, and can also protect the user. Electricity demand.
  • the apparatus further includes a registration unit 804, configured to receive a registration request of a user of the home solar power supply system, according to the The registration request establishes a user account, and the solar power supply system is used when the home solar power supply system supplies power to the AC grid.
  • the metering device measures the power quantity data transmitted, and uploads the power quantity data to the server.
  • the server calculates the compensation fee according to the power quantity data and the power unit price, and stores the compensation fee under the account of the corresponding user.
  • the amount under the user account can be used as the balance of the electricity bill.
  • the user can deduct the account balance, and the user can also withdraw the amount in the account balance.
  • the home solar power supply system may include a solar panel connected to the first DC power meter, the first DC power meter is connected to the controller, and the controller is connected to the second DC power meter, the second DC The power meter is connected to the battery, the controller is connected to the grid-connected inverter, the grid-connected inverter is connected to the power distribution box, the power distribution box is connected to the user energy meter, the user energy meter is connected to the electrical appliance, the distribution box is connected to the AC power grid, and the solar panel is connected.
  • a lightning protection system and a bidirectional converter are provided, the bidirectional converter is connected with a separate load, the distribution box is connected with a grid side load, and the distribution box is also connected with the wireless communication device.
  • the home solar power supply system can be remotely controlled by the server and connected to the grid. It can also be manually controlled from the grid.
  • the intelligent power supply device registers the user to establish a user account when the new energy power supply system is a home solar power supply system, and records the power quantity data of the provided power when detecting that the home solar power supply system supplies power to the power grid.
  • the power data is uploaded to the server, and the grid-connected data generated by each household solar power supply system is stored under the corresponding user account, and the server calculates the compensation fee according to the power data, and stores it in the user account, thereby improving the connection of the household solar power supply system. Enthusiasm to improve the power efficiency of home solar power systems and avoid energy waste.
  • the apparatus further includes a query unit 805, configured to receive a grid connection data query request, where the query request includes The second time range is obtained according to the grid-connected data query request, and the grid-connected data in the second time range is obtained, and the query result is returned to the client.
  • a query unit 805 configured to receive a grid connection data query request, where the query request includes The second time range is obtained according to the grid-connected data query request, and the grid-connected data in the second time range is obtained, and the query result is returned to the client.
  • the grid-connected data in this embodiment may include a grid connection start time and an end time, a total power amount provided during the grid time, a power unit price, and a total revenue generated by the grid connection.
  • the intelligent power supply device queries the grid-connected data according to the query request of the user, and feeds the grid-connected data to the user, so that the user can clearly understand the grid connection situation of the home solar power generation system and clearly understand the revenue, and improve the user.
  • the enthusiasm of home solar power systems connected to the grid
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of cells is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined. Or it can be integrated into another system, or some features can be ignored or not executed.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • An integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, can be stored in a computer readable storage medium.
  • the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Abstract

L'invention concerne un procédé et un dispositif d'alimentation électrique intelligente, le procédé consistant : à acquérir des informations d'alimentation électrique par le réseau d'électricité (S610) ; à déterminer si les informations d'alimentation électrique par le réseau d'électricité satisfont à une condition d'alimentation électrique anormale, et si la condition d'alimentation électrique anormale est satisfaite, alors à mettre en œuvre un réseau d'énergie renouvelable selon un principe prédéfini de réseau d'énergie renouvelable (S620). Le procédé utilise pleinement un système d'alimentation électrique à énergie renouvelable, et lorsqu'un réseau d'électricité ne peut produire de puissance normalement, une alimentation électrique stable et fiable est assurée au moyen d'un principe de réseau pour la génération de puissance à énergie renouvelable, résolvant ainsi les inconvénients d'une alimentation électrique unique par le réseau d'électricité, garantissant les besoins en utilisation d'électricité d'utilisateurs, et améliorant la satisfaction de l'utilisateur.
PCT/CN2017/096529 2017-06-23 2017-08-09 Procédé et dispositif d'alimentation électrique intelligente WO2018232869A1 (fr)

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