CN113054675B - Power demand response method, system, equipment and medium - Google Patents

Power demand response method, system, equipment and medium Download PDF

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Publication number
CN113054675B
CN113054675B CN202110277798.4A CN202110277798A CN113054675B CN 113054675 B CN113054675 B CN 113054675B CN 202110277798 A CN202110277798 A CN 202110277798A CN 113054675 B CN113054675 B CN 113054675B
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response
power
node
power supply
demand
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CN113054675A (en
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王晨薇
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Shanghai Envision Innovation Intelligent Technology Co Ltd
Envision Digital International Pte Ltd
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Shanghai Envision Innovation Intelligent Technology Co Ltd
Envision Digital International Pte Ltd
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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
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H02J3/322—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
    • 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
    • H02J3/008—Circuit arrangements for ac mains or ac distribution networks involving trading of energy or energy transmission rights
    • 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
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • H02J3/144—Demand-response operation of the power transmission or distribution network
    • 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
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/222—Demand response systems, e.g. load shedding, peak shaving

Abstract

The application discloses a power demand response method, a system, equipment and a medium, relates to the technical field of power grids, and is applied to a power demand response system, wherein the power demand response system comprises response nodes and demand calculation nodes which form a block network. The method comprises the following steps: responding to the received power demand of the power grid broadcasted by the demand computing node, and generating a response scheme by the response node according to the power demand and the state information of power supply equipment connected to the block network; the response nodes are in one-to-one correspondence with the power supply equipment, and are used for processing and storing response data of the power supply equipment responding to the power demand, wherein the response data comprises the power demand and a response scheme; the responding node stores the response data into a blockchain of the blocknetwork; the response node controls the power supply device to supply power to the power grid in response to the power demand according to the response scheme. The method can eliminate the challenge of the response data of the user to the power demand response, and improve the supervision capability of the user to the power demand response.

Description

Power demand response method, system, equipment and medium
Technical Field
The present disclosure relates to the field of power grid technologies, and in particular, to a method, a system, an apparatus, and a medium for responding to power demand.
Background
V2G (Vehicle-to-Grid) describes the relationship of an electric Vehicle to a Grid. When the electric automobile is not used, the user sells the electric energy of the vehicle-mounted battery to a system of the power grid, and the system of the power grid pays a certain economic subsidy to the user.
After the power grid generates power demand, the electric automobile responds to the power demand to discharge to the power grid, and the power grid carries out settlement of the response according to the discharge quantity of the electric automobile. In the related technology, the ammeter on the electric automobile does not display the related data responding to the power demand response of the power grid, the user can only check the published response data through the operation and maintenance party of the power grid, the response data is the total response quantity, 15 minutes of data without actual response are not available, and the user cannot check the actual response quantity.
In the related art, response data of an electric automobile responding to power demand response of a power grid is provided by a single side of the power grid, and authenticity and credibility of the data are easily questioned.
Disclosure of Invention
The application provides a power demand response method, a system, equipment and a medium. The method can eliminate the challenge of the response data of the user to the power demand response, and improve the supervision capability of the user to the power demand response. The technical scheme is as follows:
According to one aspect of the present application, there is provided a power demand response method applied in a power demand response system including response nodes and demand computation nodes constituting a block network, the method comprising:
responding to the received power demand of the power grid broadcasted by the demand computing node, and generating a response scheme by the response node according to the power demand and state information of power supply equipment connected to the block network; the response nodes are in one-to-one correspondence with the power supply equipment, and are used for processing and storing response data of the power supply equipment in the process of responding to the power demand, wherein the response data comprise the power demand and the response scheme;
the response node stores the response data into a blockchain of the blocknetwork;
and the response node controls the power supply equipment to supply power to the power grid in response to the power demand according to the response scheme.
According to one aspect of the present application, there is provided a power demand response system comprising response nodes and demand computation nodes that make up a block network;
The demand computation node is used for computing the power demand of the power grid and broadcasting the power demand to the response node;
the response node is used for responding to the received power demand broadcast by the demand computing node and generating a response scheme according to the power demand and state information of power supply equipment connected to the block network; the response nodes are in one-to-one correspondence with the power supply equipment, and are used for processing and storing response data of the power supply equipment in the process of responding to the power demand, wherein the response data comprise the power demand and the response scheme;
the response node is used for storing the response data into a block chain of the block network;
and the response node is used for controlling the power supply equipment to supply power to the power grid in response to the power demand according to the response scheme.
According to one aspect of the present application, there is provided a computer device comprising: a processor having a memory coupled to the memory; wherein the processor is configured to load and execute executable instructions to implement the power demand response method as described in the above aspects.
According to one aspect of the present application, there is provided a computer readable storage medium storing at least one instruction for execution by a processor to implement the power demand response method of the above aspect.
According to one aspect of the present application, there is also provided a computer program product storing at least one instruction that is loaded and executed by a processor to implement the power demand response method of the above aspect.
The technical scheme provided by the embodiment of the application at least comprises the following beneficial effects:
through adopting the block chain structure, the block network of power demand response system, after the demand computing node broadcasts the power demand of electric wire netting, the response node of each power supply equipment can be according to the state generation response scheme of all power supply equipment in the block network, and store response scheme and this time's power demand to the block chain of block network, each power supply equipment that participates in the power demand response has the response data of power demand response respectively like this, can eliminate the user to responding to the challenge of data, improve the user to responding to the supervision ability of data, reduce the supervision cost of power demand response, improve supervision efficiency, promote the implementation of power demand response.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a system block diagram of a power demand response system provided by an exemplary embodiment of the present application;
FIG. 2 is a block diagram of a power grid provided by another exemplary embodiment of the present application;
FIG. 3 is a system block diagram of a power demand response system provided by another exemplary embodiment of the present application;
FIG. 4 is a schematic diagram of a response node of a power demand response system provided in accordance with another exemplary embodiment of the present application;
FIG. 5 is a schematic diagram of a blockchain of a power demand response system provided by another exemplary embodiment of the present application;
FIG. 6 is a method flow diagram of a power demand response method provided by another exemplary embodiment of the present application;
FIG. 7 is a method flow diagram of a power demand response method provided by another exemplary embodiment of the present application;
Fig. 8 is a block diagram of a server according to an exemplary embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
References herein to "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
First, a brief description will be made of terms involved in this application:
electric Vehicle (EV): refers to an automobile that uses electric energy as a power source and is driven by an electric motor.
Electric vehicles have received much attention for their advantages of clean energy and environmental friendliness. On one hand, the wide application of the electric automobile can effectively relieve the dependence of the traditional fuel automobile on fossil fuel, thereby reducing the emission of polluted gas; on the other hand, the energy storage system can be used as a flexible energy storage resource to enhance the coping capability of the system.
State of Charge (SOC): the ratio of the remaining capacity of the battery to the capacity in its fully charged state is expressed as a common percentage. The SOC ranges from 0 to 1, and indicates that the battery is completely discharged when soc=0 and that the battery is completely charged when soc=1.
V2G (Vehicle-to-Grid): when the electric automobile is not used, the electric energy of the vehicle-mounted battery is discharged to the power grid.
G2V (Grid-to-Vehicle): the power grid charges the vehicle battery.
DR (Demand Response): when the reliability of the power system is threatened, after receiving a direct compensation notification of the inductivity reduced load or a power price rising signal sent by a power supply party, a power user changes the inherent habit power consumption mode of the power user, and the power supply is responded by reducing or pushing the power consumption load of a certain period of time, so that the stable short-term behavior of the power grid is ensured.
Under the conditions of the future energy internet and the distributed energy market, the conventional power demand side response will be developed toward the integrated demand side response. The advantages of electric vehicles in terms of power demand response are mainly due to their charging flexibility. The intelligent and ordered charging mode is combined with the power demand response service, and is beneficial to smoothing a load curve of a power grid, improving the capacity utilization efficiency, delaying the transmission and distribution capacity upgrading and the like. Meanwhile, if the electric automobile and the power grid realize bidirectional interconnection (V2G mode), the electric automobile can provide frequency modulation service for the power grid through V2G, namely the power grid temporarily acquires electric energy from the electric automobile to ensure reliable operation of the power grid.
There are a large number of EVs connected to the power grid in the electric vehicle charging station, and the electric vehicle charging station has a large potential power demand response capability. At the same time, many current electric vehicle charging stations are equipped with energy storage devices that can be discharged or charged from the power grid, further increasing the ability of the electric vehicle charging station to respond to power demands. These energy storage devices and EVs may perform grid demand side response, i.e. charge at grid load dips and discharge to the grid at grid load peaks, but this process may involve several stakeholders: 1) The EV car owner can obtain relevant response subsidies by participating in the power demand response; 2) The power grid initiates a power demand response signal and subsidies the participants according to the response amplitude; 3) The charging station operator is responsible for the operation of the charging station and provides hardware such as V2G and the like; 4) The energy storage investor, in which the energy storage device may be purchased by the charging station operator, may be a separate energy storage hardware investor, in which case the investor will participate in the power demand response subsidy. Therefore, patch calculation involving in power demand response is a complex process for many interested parties, and particularly when patch pricing varies in real time, an effective data recording method is required to ensure that data is true, safe and not tampered for all the interested parties.
The blockchain is used as a decentralized distributed accounting mode, and the special data structure organization form of the blockchain enables the blockchain technology to have the characteristics of decentralization, transparency, contract execution automation and traceability. In a blockchain system, each node maintains all of the data information in the entire blockchain, and therefore, there are multiple backups of data in the entire network. The node data is commonly owned, managed and supervised by all participants. On one hand, each node can be added or separated from the network at will, so that the stability of the network is ensured; on the other hand, makes the data less likely to be tampered with. The method can provide a corresponding technical platform for transaction information records such as charging, response and the like of the electric automobile in the power demand response process, and further promote the power demand response through market transaction.
The application provides a power demand response method, which records transaction information such as electricity price, response power, paste price and the like of an electric automobile and energy storage equipment in a charging station in the automatic power demand response process, ensures the reality and transparency of information among related benefit subjects, and solves the problems of unsafe platform, data difference, low query efficiency and the like.
FIG. 1 illustrates a block diagram of a power demand response system provided by an exemplary embodiment of the present application. The system comprises: demand computation node 101 and response node 102.
Illustratively, the power demand response system is deployed in a power grid (system), as shown in fig. 2, which includes an energy storage device 104 that is connected to the power grid, a charging pile 108 of an electric vehicle, an electric vehicle 109, and other powered devices 107. The electric automobile 109 can be connected to the power grid through the charging pile 108, or directly connected to the power grid. For example, the energy storage device 104 may also be directly connected to the power grid, or connected to the power grid through an access means. The devices accessed in the grid include two types: the power supply device can release electric energy (discharge) to the power grid, and the electric equipment can acquire electric energy (charge/use) from the power grid. Illustratively, the consumer includes all devices that access the power grid to consume power, such as common appliances: household appliances, computer equipment, street lamps, etc. Illustratively, the power supply device includes a device that is connected to a power grid to provide power to the power grid, e.g., a battery, a generator, etc. Some of the devices may be power supply devices or electric devices, for example, the energy storage device 104 and the electric vehicle 109 are electric devices during charging and are power supply devices during discharging.
Illustratively, the power demand response system shown in FIG. 1 is deployed based on the physical structure of the power grid shown in FIG. 2. The power demand response system is an exemplary logic system deployed based on a grid system, and each logic node (response node or demand computing node) of the power demand response system corresponds to an actual physical device.
The response nodes are deployed corresponding to power supply equipment in the power grid. When the power supply equipment connected to the power grid wants to join the power demand response system to obtain subsidies in response to the power demand of the power grid, the power supply equipment creates a response node, and receives the power demand broadcasted by the demand calculation node in the power demand response system through the response node connected to the power demand response system, and responds. For example, the power supply device corresponding to the response node 102 may be an EV, an energy storage device, or a power generation device. For example, taking power supply equipment as an electric automobile as an example, a response node corresponding to the electric automobile can be deployed on the electric automobile, and can also be deployed on a charging pile connected with the electric automobile; taking power supply equipment as energy storage equipment as an example, a response node corresponding to the energy storage equipment can be deployed on the energy storage equipment, and can also be deployed on an access device connected with the energy storage equipment. The response node is a logic node deployed on a physical device, and the physical device is used for completing the operation and storage functions corresponding to the response node, for example, the physical device comprises a processor and a memory, and the processor and the memory are used for running codes or programs to realize the functions of the response node. For example, the power supply devices connected to the power grid do not have to all be connected to the power demand response system through the response node, but the power supply devices connected to the power demand response system through the response node have to all be connected to the power grid.
The demand computing node is deployed on computer equipment, the computer equipment can be connected with a power grid or not, the demand computing node is a logic node deployed on the computer equipment (physical equipment), and the computer equipment is used for completing the operation and storage functions corresponding to the demand computing node. By way of example, the computer device may be at least one of a terminal or a server, wherein the terminal comprises at least one of a cell phone, a notebook computer, a desktop computer, a tablet computer.
Illustratively, all nodes (demand computing nodes and response nodes) in the power demand response system are connected through a wired network or a wireless network, so as to form a block network based on a block chain as shown in fig. 1. The blocknetwork is a distributed network (Distributed network) based on blockchain technology.
Illustratively, as shown in FIG. 1, demand computation node 101 is configured to compute the demand power and subsidy price to which the grid needs to be responded, and to broadcast the power demand (demand power and subsidy price) to response nodes 102 in the power demand response system. The response node 102 is configured to receive the power demand, generate a response scheme according to the power demand and the state information of the power supply device, and control the power supply device to respond to the power demand of the power grid according to the response scheme to supply power to the power grid.
Illustratively, a demand computation node 101 is disposed in a power demand response system, and the number of response nodes 102 in the power demand response system may be arbitrary, for example, the number of response nodes may be 0, 1 or infinity, the number of response nodes 102 is determined according to the number of power supply devices accessing the power demand response system, and each time a new power supply device is accessed, a new response node is created for the power supply device to access the power demand response system.
For example, as shown in fig. 3, taking an example that the power supply device corresponding to the response node includes an EV103 and an energy storage device 104, where the EV103 includes an EV1, an EV2, an EV3, and an EV4, the power demand response system includes 5 response nodes and 1 demand calculation node, and 6 nodes are connected in pairs.
Illustratively, as shown in fig. 4, the responding node includes a storage structure and a judging module, wherein the storage structure includes an IP (Internet Protocol ) address 201, a public key 202, a private key 203, a response scheme 204, a blockchain 205, a received information database 206, a responding node information database 207, a charge and discharge information database 208, and a transaction database 209.
The public key and the private key are generated when the response node accesses the power demand response system and are used for information encryption and verification. The received information database is used for caching information broadcast by other nodes. The response node information database is used for storing the state and demand information of all response nodes in the power demand response system. The state and demand information includes the current SOC of the power supply device corresponding to the response node now The total capacity W of the battery and the expected off-grid time t of the power supply equipment dep Minimum SOC expected at off-grid dep . Illustratively, when the power supply device is an energy storage device, it expects an off-grid time t dep Is infiniteLarge off-grid minimum SOC dep Is (1-maximum depth of discharge). The charge and discharge information database is used for storing charge and discharge states and charge and discharge power of all response nodes in the power demand response system. The transaction database is used for storing intelligent contracts, power demands, response data and response income data, wherein the intelligent contracts comprise at least one of energy storage renting contracts and EV renting contracts, the response node calculates response income data of the current response according to the response data and the power demands of the current response after finishing the response of the current power demands, the corresponding data, the power demands and the response income data are stored in the transaction database, and a subsidy settlement request is initiated to the power grid according to the data stored in the transaction database to settle the response income. The response node receives the power demand broadcast by the demand computing node, and then judges the response scheme of the response node according to the response scheme.
The response node creates blank blocks on the block chain according to fixed time intervals, the demand computing unit computes the power demand of the power grid in a period of time according to the same time intervals, and the response node stores response data of the power supply equipment to the power demand into the latest blank blocks. Illustratively, as shown in FIG. 5, a chunk in the blockchain includes a chunk header 301 and a chunk body 302, wherein the chunk header 301 includes at least one of a version number of the current chunk, an address of the previous chunk, a timestamp, and a Merkle root; zone block 302 includes: the response data of all the response nodes participating in the response, for example, one piece of response data corresponds to one response node, and one piece of response data comprises: at least one of a response time period, required power required by a power grid corresponding to the time period, the number of the response node, the response power of the response node, a response subsidy price and response income of the response node in the current response.
Illustratively, due to the impact of transmission distance on power transmission loss, power demand response systems are typically deployed within a regional power grid for performing power demand response within a regional power grid, e.g., based on a city, or a regional power grid. For example, when the power demand response system of a city is deployed based on the power grid of the city, the response nodes may be deployed on charging piles within respective electric vehicle charging stations of the city, and the electric vehicle may activate the response nodes to access the power demand response system, such as by the charging piles, for the response of the power demand. The response nodes can be deployed on each electric automobile, and no matter the electric automobile accesses the power grid of the city at the position of the city, the electric automobile can establish the response nodes to access the power demand response system to respond to the power demand of the power grid. The computer device corresponding to the demand computing node may be disposed in the city or may be disposed outside the city, and the demand response node may obtain relevant power information of the urban power grid through a network, so as to analyze a current power supply state of the power grid, and when the power supply power of the power grid cannot meet the demand, calculate the demand power of the power grid and the subsidy price to generate the power demand, and broadcast the power demand to the response node in the power demand response system. Of course, the computer equipment can also be directly connected to the urban power grid to directly calculate the power supply state of the urban power grid.
Fig. 6 shows a flowchart of a power demand response method according to an exemplary embodiment of the present application, where the method may be applied in a power demand response system as shown in fig. 1, and the power demand response system includes response nodes and demand computation nodes that form a block network, and the method may include the following steps:
step 401, responding to the received power demand of the power grid broadcasted by the demand computing node, and generating a response scheme by the response node according to the power demand and the state information of the power supply equipment connected to the block network; the response nodes are in one-to-one correspondence with the power supply equipment, and are used for processing and storing response data of the power supply equipment in the process of responding to the power demand, wherein the response data comprise the power demand and a response scheme.
The demand computation node periodically computes the power demand of the power grid over a period of time, the power demand including the power demand of the power grid, the subsidy price, and the demand computation node broadcasts the power demand to other nodes in the block network after the power demand is computed. The demand computation node computes, for example, power demand of the power grid once every first time period for a first time period in the future. For example, the demand computation node computes the power demand of the grid once every two hours for the next two hours. For example, the power demand sent by the demand computation node is that 1000kw of power is required for the next two hours (10:00-12:00), with 50 yuan per 100kwh patch.
Illustratively, the responding node obtains status information of all power supply devices in the power demand response system after receiving the power demand. In the power demand response system, one response node corresponds to one power supply device, and each time a new power supply device is connected to the power demand response system, a new response node is generated to be connected to the block network of the power demand response system. Therefore, after receiving the power demand, the response node broadcasts the state information of the power supply equipment corresponding to the response node to other response nodes in the block network, and meanwhile, the response node also receives the state information of other power supply equipment broadcast by other response nodes, so that each response node can obtain the state information of all the power supply equipment in the power demand response system.
The power supply device is, for example, a device that can supply power to the power grid in response to the power demand of the power grid. For example, the power supply device may be at least one of an electric automobile, an energy storage device (battery), and a power generation device (generator). The power supply equipment can realize bidirectional energy circulation with the power grid, namely, the power supply equipment can acquire electric energy from the power grid for charging, and the charging equipment can also provide electric energy for the power grid for discharging. For example, the power supply device may be an electric car or an energy storage device.
Exemplary state information of the power supply device includes the current SOC now The total capacity W of the battery and the expected off-grid time t of the power supply equipment dep Minimum SOC expected at off-grid dep At least one of them. Wherein, when the power supply equipment is an electric car, the power supply equipment expects the off-grid time t dep And the minimum SOC expected at off-grid dep Is composed ofThe user sets at the time of switching in the power demand system, for example, the user switches in the electric vehicle to the power demand system for charging, and then sets the time at which the electric vehicle is expected to leave the power demand response system and the minimum SOC that the electric vehicle should have at the time of leaving the power demand response system dep 。
The response node determines which power supply devices respond to the current power demand according to the power demand of the power grid and the state information of all power supply devices, and generates a response scheme according to the response power of each power supply device, and the response node controls the power supply devices to respond to the current power demand according to the generated response scheme. The response scheme is the sum of schemes of all power supply devices in the power demand response system responding to the current power demand. Each response node calculates a response scheme of all power supply equipment responding to the current power demand according to the power demand and the state information in the same calculation mode, after one response node calculates the response scheme, the response scheme is stored in the blockchain, the response scheme is broadcast to other nodes (the response node and the demand calculation node), the response scheme is verified after the response scheme is received by the other nodes, and after the verification is passed, the response scheme is stored in the blockchain to update the blockchain backup of the node. Exemplary, the response scheme includes: at least one of power supply equipment responding to the current power demand, response power of the power supply equipment and response income expected by the power supply equipment from the current response.
Illustratively, the response node and the demand computation node are nodes in a block network accessing the blockchain, and the response node may be any computer device with computing power, for example, the response node may be implemented by a computer device on an electric vehicle, a computer device on a charging pile, or a computer device on a charging device of a storage battery. That is, the response node may be provided in the power supply apparatus, or may be provided on an access device/apparatus to which the power supply apparatus accesses the power demand response system, one power supply apparatus corresponding to one response node. The demand computation node may be, for example, a computer device, such as a terminal or server, accessing a block network of the power demand response system.
Step 402, the responding node stores the response data in a blockchain of the blocknetwork.
Illustratively, the responding node, after generating the response scheme, encapsulates the response scheme, the power requirements into blocks, links the blocks into the blockchain.
Illustratively, the responding node periodically creates a blank block, and accesses the blank block chain into the block chain. Illustratively, the time period for the responding node to create the blank block is the same as the time period for the demand computation node to compute the power demand. After generating the response scheme, the responding node encapsulates the response data into the most recent blank block and links into the blockchain.
By way of example, each node in the block network of the power demand response system maintains a block chain together, and the block chain is used for storing response data of each response node in the power demand response system for responding to each power demand.
In step 403, the responding node controls the power supply device to supply power to the power grid in response to the power demand according to the response scheme.
After the response scheme is generated, the response node generating the response scheme broadcasts the response scheme to other nodes, the other nodes verify and store the response scheme, and then each response node controls the power supply equipment corresponding to the corresponding node to respond to the power demand according to the response scheme.
For example, when the power supply device controlled by the node is listed as a response power supply device responding to the current power demand in the response scheme, the response power supply device is controlled to supply power to the power grid. When the power supply equipment controlled by the node is not listed as the response power supply equipment responding to the current power demand in the response scheme, the power supply equipment is not controlled to supply power to the power grid.
In summary, in the method provided in this embodiment, by adopting the structure of the blockchain to construct the blocknetwork of the power demand response system, after the demand computing node broadcasts the power demand of the power grid, the response node of each power supply device generates a response scheme according to the states of all the power supply devices in the blocknetwork, and stores the response scheme and the current power demand into the blockchain of the blocknetwork, so that each power supply device participating in the power demand response stores the response data of the power demand response, thereby eliminating the challenge of the user to the response data, improving the supervision capability of the user to the response data, reducing the supervision cost of the power demand response, improving the supervision efficiency, and promoting the implementation of the power demand response.
In an embodiment based on fig. 6, fig. 7 shows a flowchart of a power demand response method provided by another exemplary embodiment of the present application. In this embodiment, step 401 includes step 4011 and step 4012, step 402 includes step 4021 and step 4022, and step 403 further includes step 404 and step 405.
In step 4011, in response to receiving the power demand of the power grid broadcasted by the demand computing node, the responding node obtains and stores the state information of the n power supply devices in the block network to obtain a state information set.
Illustratively, the storage structure of the responding node includes an IP address, a public key, a private key, a response scheme, a blockchain, a received information database, a responding node information database, a charge and discharge information database, and a transaction database as shown in fig. 4. After receiving the power demand, the response node sends the state information of the power supply equipment of the response node to other nodes in the block network, receives the state information of the power supply equipment sent by other response nodes, and stores the state information of all the power supply equipment in the power demand response system into a charge and discharge information database.
For example, the storage structure of the demand computation node may be the same as the storage structure of the response node. The storage structure of the demand computation node may also include, for example, only: IP address, public key, private key, and blockchain.
For example, the state information of all power supply apparatuses is referred to as a state information set.
In step 4012, the responding node generates a response scheme based on the set of state information and the power demand.
Illustratively, the response node includes a storage structure and a determination module for generating a response scheme based on the set of state information and the power demand.
The status information includes, for example, the discharge power of the power supply device and the expected departure time from the block network (power demand response system).
The discharge power is, for example, the maximum power that the power supply device is allowed to discharge. Taking an electric automobile as an example of power supply equipment, discharging power P d Is the maximum output power P of the electric automobile bdis Maximum received power P of charging pile pilein Actual maximum output power P of electric automobile left Minimum value (P) d ＝min{P bdis ,P pilein ,P left }). Wherein the actual maximum output power of the electric vehicle is the average power discharged in a certain time according to the current residual electric quantity of the electric vehicle, for example, the current residual electric quantity of the electric vehicle is 300kwh (kilowatt-hour) and the certain time is 15 minutes, the actual maximum output power P of the electric vehicle in the current state left 300/0.25=1200 kw (kw). If the maximum output power P of the electric automobile bdis Maximum receiving power P of charging pile connected with 300kw current electric automobile pilein 500kw, the discharge power of the electric vehicle is min {1200,300,500} =300 kw.
Illustratively, the expected departure time is a time set by a user, for example, when the user switches the power supply apparatus into the power demand response system, the setting is expected to exit the power demand response system after 3 hours. When the power supply device is an energy storage device, the discharge power of the energy storage device is the estimated departure time of the energy storage device to infinity.
The response node calculates n discharging priorities corresponding to the n power supply devices respectively according to the state information set, the discharging priorities and the discharging power of the power supply devices are in positive correlation, the discharging priorities and the predicted departure time of the power supply devices are in negative correlation, and n is a positive integer.
In an exemplary embodiment, the response scheme provided in this embodiment is to preferentially discharge the power supply device with high discharge power and short departure time in the power demand response system. Thereby, discharge priorities are introduced to order the power supply devices.
Illustratively, a method for calculating the discharge priority is provided: the discharging priority of one power supply device is equal to the difference between the power factor and the time factor, wherein the power factor is equal to the ratio of the discharging power of the power supply device to the discharging average power, and the discharging average power is the average value of the discharging power of all the power supply devices connected into the power demand response system; the time factor is equal to the ratio of the predicted departure time to the fixed time, the predicted position time is equal to the difference between the predicted departure time and the current time, and the fixed time is the preset time. For example, when the power demand response system is disposed within the charging station, the fixed duration may be equal to a difference between a charging station door closing time and a current time.
Illustratively, the greater the discharge priority of the power supply device, the greater its discharge power and the closer the expected departure time.
The response node arranges the n power supply devices according to the order of the discharging priority from large to small to obtain a discharging order list of the power supply devices; the response node determines the first j power supply devices in the discharge order list as response power supply devices for responding to the power demand according to the power demand, j being a positive integer less than or equal to n.
Illustratively, the power demand includes the power demanded by the grid. Illustratively, the response node calculates the sum of the discharge powers of the first j power supply devices in the discharge sequence list to obtain a first total discharge power, calculates the sum of the discharge powers of the first j-1 power supply devices in the discharge sequence list to obtain a second total discharge power, j is a positive integer less than or equal to n, and n is a positive integer; the responding node determines the first j power supply devices as responding power supply devices for responding to the power demand in response to the first total power discharge being greater than the demand power and the second total power discharge being less than the demand power.
That is, in a sequence of discharge booksThe n power supply devices in the table are arranged in the order of [ d1, d2, d3 … … dn]For example, the corresponding discharge power P d Is P d1 、P d2 、P d3 ……P dn The first j power supply devices should satisfyAnd->Wherein Δp is the power demand of the grid.
The responding node determines a response power of the responding power supply device based on the discharge power and the power demand of the responding power supply device.
Illustratively, the response node determines the discharge power of the first j-1 power supply devices as the response power of the first j-1 response power supply devices; the response node calculates a first difference value between the required power and the total power of the second discharge; the response node determines a second difference between the discharge power of the j-th power supply device and the first difference as the response power of the j-th response power supply device.
That is, the discharge power of the power supply device (the response power supply device) is the response power for the first j-1 power supply devices, and the response power of the power supply device (the response power supply device) is the difference between the required power and the total discharge power of the first j-1 power supply devices.
For example, the responding power supply device is a power supply device participating in the response of the current power demand, and for the power supply devices arranged in the j+1th to nth power supply devices in the discharge sequence list, the responding power supply device does not respond to the current power demand and does not discharge to the power grid.
For example, the response node may also generate the response scheme according to other methods, for example, according to the discharge power of the power supply devices, determine the first j power supply devices with the largest discharge power as the response power supply devices. Or, the response node calculates the average value of the required power according to the number of the power supply devices currently connected into the power demand response system, namely, the required power is divided by the number of the power supply devices, and all the power supply devices are controlled to discharge the power grid according to the average value of the required power.
For example, in consideration of power transmission loss, the responding node may further obtain a geographical position of the power supply device, calculate a device distance between the power supply device and a central position of the city, calculate a ratio of the device distance to an average device distance to obtain a distance priority, and rank the power supply devices according to a difference between the discharge priority and the distance priority to obtain a discharge sequence list, where the average device distance is an average value of device distances of all the power supply devices. And selecting the first j power supply devices as response power supply devices according to the discharge sequence list to respond to the current power demand.
In step 4021, the responding node periodically creates blank blocks on the blockchain.
Illustratively, the period in which the responding node creates a blank block is the same as the period in which the demand computation node computes the power demand.
In step 4022, in response to generating the response scheme, the responding node stores the response data in a blank block corresponding to a last period of time on the blockchain.
Illustratively, the response data includes a response scheme and a power demand. The response scheme comprises the following steps: at least one of the number of the responding power supply equipment, the responding power, the responding benefit and the responding period. The power demand includes at least one of demand power, subsidy price. For example, the response data includes j response records of j response power supply apparatuses (response nodes), each of the response records including: at least one of a response period, the required power of the power grid, the number of a response node (a response power supply device), the response power of the response power supply device, the subsidy price of the current response and the response income of the current response. The response period is, for example, a discharge duration of the responding power supply device. The response benefit is a benefit calculated from the subsidy price and the response power.
Illustratively, when a power demand response occurs, the responding node encapsulates the response data of the current power demand response into the latest blank block, and inserts the encapsulated blockchain into the blockchain of the power demand response system.
Step 404, the response node obtains a response result of the power supply equipment responding to the power demand, and stores the response result to the transaction database, wherein the response result comprises at least one of response power, response time period, subsidy price and response income of the power supply equipment.
Illustratively, the response node further includes a transaction database having stored therein transaction objects, transaction content, and smart contracts. The transaction object is a user (user account) providing power supply equipment and an operator of the power grid, and the transaction content (response result) includes: at least one of response power, demand power, subsidy price, response revenue. The smart contracts include lease contracts for energy storage devices and EV lease contracts, which specify that on the premise that a trigger condition preset in the contracts is satisfied, the right of use of the responsive power supply devices (energy storage devices and EVs) that participate in demand response is leased to an operator of the power grid in a period of time, the owner of the energy storage devices and the owners of the EVs are leased, the operator of the power grid is the lessee, the former obtains lease issued in the form of response subsidies, and the latter pays the response subsidies to obtain the right of use of the energy storage devices and EVs.
Illustratively, after the power demand response is finished, the response node further stores the response result of the current response in the transaction database.
And step 405, the response node sends a revenue settlement request to the server according to the response result stored in the transaction database, and the server is used for performing revenue settlement according to the response result.
The response result is included in the revenue settlement request, the server is a server set by an operator of the power grid, the server is used for conducting transaction settlement, and after the revenue settlement request is received, the response result is verified, and response revenue is driven into a user account of the power supply equipment according to the response result.
Exemplary, the present embodiment also provides an exemplary embodiment of adding a response node to the power demand response system.
Illustratively, the original n response nodes in the power demand response system are taken as an example. Responding to the n+1th power supply equipment to access a power demand response system, and generating an address, a private key and a public key of the n+1th response node by the n+1th response node corresponding to the n+1th power supply equipment; the n+1th response node broadcasts n+1th node information to the block network, wherein the n+1th node information comprises the address and the public key of the n+1th response node; n response nodes receive the n+1th node information and store the n+1th node information into respective response node information databases; the n+1th response node receives n node information of n response nodes broadcasted by the n response node, stores the n+1th node information into an n+1th response node information database, wherein the n+1th node information comprises n node information and n+1th node information, and the n+1th response node information database is a response node information database of the n+1th response node.
Illustratively, the responding node may periodically broadcast node information of the node to other responding nodes in the power demand response system, where the node information includes at least one of an IP address of the node, a public key, a current power of the power supply device, a total capacity of the battery, a predicted off-grid time of the power supply device, and a minimum power expected at the off-grid time. And after receiving the node information, the other response nodes update the node information to the response node information database in real time.
Illustratively, the response node information database stores node information for each response node in the power demand response system.
In summary, in the method provided in this embodiment, after receiving the power demand, the responding node synchronizes the state information of the power supply devices with other responding nodes, calculates the discharge priorities of all the power supply devices according to the state information and the power demand, sorts the power supply devices according to the discharge priorities, and selects the power supply device with the higher discharge priority as the responding power supply device to respond to the current power demand. Therefore, the power supply equipment with high discharge power and short off-grid time is preferentially selected to perform power demand response, and the efficiency and the resource utilization rate of the power demand response are improved.
Exemplary embodiments are presented for applying the power demand response method provided herein in an electric vehicle charging station.
In an electric vehicle charging station, a response node is arranged on a charging pile and energy storage equipment in the charging station, a demand calculation node is arranged on any computer in the charging station, and all the nodes are connected through a local area network or a wide area network to form a blockchain-based blocknetwork.
When a new electric automobile is accessed into the power demand response system through the charging pile, a computer of the charging pile generates a new response node, an IP address of the node is obtained, a private key is generated, a public key is generated according to the private key, related information of the public key and power supply equipment is broadcast to other nodes in the power demand network, node information of the other nodes is downloaded from the other nodes, and the node information is stored in a response node information database. And completing the access process of the new response node.
Illustratively, the demand computation node periodically computes the power demand and broadcasts the power demand to the response nodes. After receiving the power demand, the responding node determines the charge and discharge states and the discharge power of the power supply equipment of the responding node, broadcasts the power supply equipment to the whole network, receives state information of the power supply equipment broadcasted by other responding nodes, and sorts all the power supply equipment according to the discharge priority alpha to form a node discharge sequence list. And the response node selects the first few power supply devices in the discharge sequence list as response power supply devices to respond to the current power demand and discharge the power supply devices to the power grid according to the power demand in the power demand.
In summary, by constructing the power demand response system in the charging station, the method provided by the embodiment of the invention enables the power supply device in the charging station to supply power to the power grid when the power grid has power demand, reduces the load of the power grid, improves the resource utilization rate, and enables the owner of the power supply device to obtain a certain benefit through the power demand response. By using the blockchain to store the response data, the reliability of the response data is improved, a better supervision mode is provided, the supervision cost of the power demand response is reduced, the supervision efficiency is improved, and the implementation of the power demand response is promoted.
Illustratively, as shown in fig. 1, the present application also provides a power demand response system, which includes a response node 102 and a demand computation node 101 that constitute a block network;
the response node 102 is configured to generate a response scheme according to the power demand and state information of power supply equipment connected to the block network, in response to receiving the power demand of the power grid broadcasted by the demand computing node 101; the response nodes 102 are in one-to-one correspondence with the power supply equipment, and the response nodes 102 are used for processing and storing response data of the power supply equipment in the process of responding to the power demand, wherein the response data comprises the power demand and the response scheme;
The response node 102 is configured to store the response data into a blockchain of the blocknetwork;
the response node 102 is configured to control the power supply device to supply power to the power grid in response to the power demand according to the response scheme.
In an optional embodiment, the block network includes n response nodes 102, where n response nodes 102 respectively correspond to n power supply devices, and n is a positive integer;
the response node 102 is configured to obtain and store the status information of n power supply devices in the block network to obtain a status information set in response to receiving the power demand of the power grid broadcasted by the demand computation node 101;
the response node 102 is configured to generate the response scheme according to the set of state information and the power demand.
In an alternative embodiment, the status information includes a discharge power of the power supply device and a predicted departure time from the block network; the response scheme comprises response power supply equipment responding to the power demand and response power of the response electric equipment;
the response node 102 is configured to calculate n discharge priorities corresponding to the n power supply devices according to the state information set, where the discharge priorities have a positive correlation with the discharge power of the power supply device, the discharge priorities have a negative correlation with the expected departure time of the power supply device, and n is a positive integer;
The response node 102 is configured to arrange the n power supply devices in order of the discharge priorities from large to small to obtain a discharge order list of the power supply devices;
the response node 102 is configured to determine, according to the power demand, the first j power supply apparatuses in the discharge order list as response power supply apparatuses for responding to the power demand, where j is a positive integer less than or equal to n;
the response node 102 is configured to determine a response power of the response power supply device according to the discharge power and the power demand of the response power supply device.
In an alternative embodiment, the power demand includes demand power;
the response node 102 is configured to calculate a sum of the discharge powers of the first j power supply devices in the discharge sequence list to obtain a first total discharge power, calculate a sum of the discharge powers of the first j-1 power supply devices in the discharge sequence list to obtain a second total discharge power, where j is a positive integer less than or equal to n, and n is a positive integer;
the response node 102 is configured to determine the first j power supply devices as the response power supply devices for responding to the power demand in response to the first total power discharge being greater than the required power and the second total power discharge being less than the required power.
In an alternative embodiment, said response node 102 is configured to determine said discharge power of the first j-1 said power supply devices as said response power of the first j-1 said responding power supply devices;
the response node 102 is configured to calculate a first difference between the required power and the second total power of discharge;
the response node 102 is configured to determine a second difference between the discharge power of the jth power supply device and the first difference as the response power of the jth responding power supply device.
In an alternative embodiment, the response node 102 includes a charge and discharge information database;
the response node 102 is configured to obtain the state information of n power supply devices in the block network to obtain a state information set in response to receiving the power demand of the power grid broadcasted by the demand computation node 101;
the response node 102 is configured to store the state information set into the charge-discharge information database.
In an alternative embodiment, the response node 102 is configured to periodically create blank blocks on the blockchain;
the response node 102 is configured to store, in response to generating the response scheme, the response data into a blank block corresponding to a last period of time on the blockchain.
In an alternative embodiment, the response node 102 includes a response node 102 information database, and the block network includes n response nodes, where n is a positive integer;
the n+1th response node corresponding to the n+1th power supply equipment is used for responding to the fact that the n+1th power supply equipment accesses the power demand response system to generate an address, a private key and a public key of the n+1th response node;
the n+1th response node is configured to broadcast n+1th node information to the block network, where the n+1th node information includes an address and a public key of the n+1th response node;
the n response nodes are used for receiving the n+1th node information and storing the n+1th node information into the response node information databases respectively;
the n+1th response node is configured to receive n node information of the n response nodes broadcasted by the n response nodes, store n+1th node information into an n+1th response node information database, where the n+1th node information includes the n node information and the n+1th node information, and the n+1th response node information database is the response node information database of the n+1th response node.
In an alternative embodiment, the response node 102 comprises a transaction database;
the response node 102 is configured to obtain a response result of the power supply device in response to the power demand, and store the response result in the transaction database, where the response result includes at least one of response power, response period, subsidy price, and response benefit of the power supply device;
the response node 102 is configured to send a revenue settlement request to a server according to the response result stored in the transaction database, where the server is configured to perform revenue settlement according to the response result.
The application also provides a server, which comprises a processor and a memory, wherein at least one instruction is stored in the memory, and the at least one instruction is loaded and executed by the processor to realize the security detection method provided by each method embodiment. It should be noted that the server may be a server as provided in fig. 8 below.
Referring to fig. 8, a schematic structural diagram of a server according to an exemplary embodiment of the present application is shown. Specifically, the present invention relates to a method for manufacturing a semiconductor device. The server 1300 includes a central processing unit (Central Processing Unit, CPU) 1301, a system Memory 1304 including a random access Memory (Random Access Memory, RAM) 1302 and a Read-Only Memory (ROM) 1303, and a system bus 1305 connecting the system Memory 1304 and the central processing unit 1301. The server 1300 also includes an Input/Output (I/O) system 13013 for facilitating information transfer between the various devices within the computer, and a mass storage device 1307 for storing an operating system 1313, application programs 1314 and other program modules 1315.
The basic input/output system 1306 includes a display 1308 for displaying information, and an input device 1309, such as a mouse, keyboard, etc., for a user to input information. Wherein the display 1308 and the input device 1309 are connected to the central processing unit 1301 through an input output controller 1310 connected to the system bus 1305. The basic input/output system 1306 may also include an input/output controller 1310 for receiving and processing input from a keyboard, mouse, or electronic stylus, among a plurality of other devices. Similarly, the input output controller 1310 also provides output to a display screen, a printer, or other type of output device.
The mass storage device 1307 is connected to the central processing unit 1301 through a mass storage controller (not shown) connected to the system bus 1305. The mass storage device 1307 and its associated computer-readable media provide non-volatile storage for the server 1300. That is, the mass storage device 1307 may include a computer-readable medium (not shown) such as a hard disk or CD-ROM (Compact Disc Read-Only Memory) drive.
The computer readable medium may include computer storage media and communication media without loss of generality. Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media includes RAM, ROM, EPROM (Electrical Programmable Read Only Memory, electrically-powered program-controlled read-only memory), EEPROM (Electrically Erasable Programmable Read Only Memory, charged erasable programmable read-only memory), flash memory, or other solid state memory technology, CD-ROM, DVD (Digital Video Disc, high-density digital video disk), or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage, or other magnetic storage devices. Of course, those skilled in the art will recognize that the computer storage medium is not limited to the one described above. The system memory 1304 and mass storage device 1307 described above may be referred to collectively as memory.
The memory stores one or more programs configured to be executed by the one or more central processing units 1301, where the one or more programs include instructions for implementing the management method of the internet of things device, and the central processing unit 1301 executes the one or more programs to implement the management method of the internet of things device provided by the foregoing method embodiments.
According to various embodiments of the application, the server 1300 may also operate by a remote computer connected to the network through a network, such as the Internet. I.e., the server 1300 may be connected to the network 1312 via a network interface unit 1311 coupled to the system bus 1305, or the network interface unit 1311 may be used to connect to other types of networks or remote computer systems (not shown).
The memory further includes one or more programs, where the one or more programs are stored in the memory, and the one or more programs include steps executed by the server in the method for managing the internet of things device provided by the embodiments of the present application.
The embodiment of the application also provides a computer readable medium, which stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement the management method of the internet of things device according to each embodiment.
Embodiments of the present application also provide a computer program product storing at least one instruction that is loaded and executed by a processor to implement the method for managing an internet of things device according to the above embodiments.
Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The foregoing description of the preferred embodiments is merely exemplary in nature and is not intended to limit the invention, but is intended to cover various modifications, substitutions, improvements, and alternatives falling within the spirit and principles of the invention.

Claims (8)

1. The power demand response method is characterized by being applied to a power demand response system, wherein the power demand response system comprises response nodes and demand calculation nodes which form a block network, the block network comprises n response nodes, the n response nodes respectively correspond to n power supply devices, and n is a positive integer; the method comprises the following steps:
responding to the received power demand of the power grid broadcasted by the demand computing node, and acquiring and storing state information of the n power supply devices in the block network by the response node to obtain a state information set; the status information includes a discharge power of the power supply device and a predicted departure time from the block network;
the response node calculates n discharging priorities corresponding to the n power supply devices respectively according to the state information set, wherein the discharging priorities have a positive correlation with the discharging power of the power supply device, and the discharging priorities have a negative correlation with the pre-departure time of the power supply device;
the response node arranges the n power supply devices according to the order of the discharging priority from big to small to obtain a discharging order list of the power supply devices;
The response node determines the first j power supply devices in the discharge sequence list as response power supply devices for responding to the power demand according to the power demand, wherein j is a positive integer less than or equal to n;
the response node determines the response power of the response power supply equipment according to the discharge power and the power demand of the response power supply equipment; the response nodes are in one-to-one correspondence with the power supply equipment, and are used for processing and storing response data of the power supply equipment in the process of responding to the power demand, wherein the response data comprises the power demand and a response scheme; the response scheme comprises response power supply equipment responding to the power demand and response power of response electric equipment;
the response node stores the response data into a blockchain of the blocknetwork;
and the response node controls the power supply equipment to supply power to the power grid in response to the power demand according to the response scheme.
2. The method of claim 1, wherein the power demand comprises demand power;
the response node determining the first j power supply devices in the discharge order list as response power supply devices responding to the power demand according to the power demand, including:
The response node calculates the sum of the discharge powers of the first j power supply devices in the discharge sequence list to obtain a first total power of discharge, calculates the sum of the discharge powers of the first j-1 power supply devices in the discharge sequence list to obtain a second total power of discharge, j is a positive integer less than or equal to n, and n is a positive integer;
the response node determines the first j power supply devices as the response power supply devices for responding to the power demand in response to the first total power discharge being greater than the demand power and the second total power discharge being less than the demand power.
3. The method of claim 2, wherein the responding node determining the response power of the responding power sourcing equipment from the discharge power and the power demand of the responding power sourcing equipment comprises:
the response node determines the discharge power of the first j-1 power supply devices as the response power of the first j-1 power supply devices;
the response node calculates a first difference value between the required power and the second total power of discharge;
the response node determines a second difference between the discharge power of the j-th power supply device and the first difference as the response power of the j-th response power supply device.
4. A method according to any one of claims 1 to 3, wherein the response nodes comprise a response node information database, the tile network comprises n response nodes, n being a positive integer, the method further comprising:
responding to an n+1th power supply device to access the power demand response system, wherein an n+1th response node corresponding to the n+1th power supply device generates an address, a private key and a public key of the n+1th response node;
the n+1th response node broadcasts n+1th node information to the block network, wherein the n+1th node information comprises an address and a public key of the n+1th response node;
the n response nodes receive the n+1th node information and store the n+1th node information into the response node information databases;
the n+1th response node receives n node information of the n response nodes broadcasted by the n response nodes, stores n+1th node information into an n+1th response node information database, wherein the n+1th node information comprises the n node information and the n+1th node information, and the n+1th response node information database is the response node information database of the n+1th response node.
5. A method according to any one of claims 1 to 3, wherein the response node comprises a transaction database; the method further comprises the steps of:
the response node obtains a response result of the power supply equipment responding to the power demand, and stores the response result to the transaction database, wherein the response result comprises at least one of response power, response time period, subsidy price and response income of the power supply equipment;
and the response node sends a revenue settlement request to a server according to the response result stored in the transaction database, and the server is used for performing revenue settlement according to the response result.
6. An electrical power demand response system, the electrical power demand response system comprising: a response node and a demand computation node forming a block network; the block network comprises n response nodes, the n response nodes respectively correspond to n power supply devices, and n is a positive integer;
the demand computation node is used for computing the power demand of the power grid and broadcasting the power demand to the response node;
the response node is used for responding to the received power demand of the power grid broadcasted by the demand computing node, and the response node obtains and stores the state information of the n power supply devices in the block network to obtain a state information set; the status information includes a discharge power of the power supply device and a predicted departure time from the block network;
The response node is configured to calculate n discharging priorities corresponding to the n power supply devices according to the state information set, where the discharging priorities have a positive correlation with the discharging power of the power supply device, and the discharging priorities have a negative correlation with the predicted departure time of the power supply device;
the response node is used for arranging the n power supply devices according to the order of the discharging priorities from large to small to obtain a discharging order list of the power supply devices;
the response node is used for determining the first j power supply devices in the discharge sequence list as response power supply devices for responding to the power demand according to the power demand, wherein j is a positive integer less than or equal to n;
the response node is used for determining the response power of the response power supply equipment according to the discharge power and the power demand of the response power supply equipment; the response nodes are in one-to-one correspondence with the power supply equipment, and are used for processing and storing response data of the power supply equipment in the process of responding to the power demand, wherein the response data comprises the power demand and a response scheme; the response scheme comprises response power supply equipment responding to the power demand and response power of response electric equipment;
The response node is used for storing the response data into a block chain of the block network;
and the response node is used for controlling the power supply equipment to supply power to the power grid in response to the power demand according to the response scheme.
7. A computer device, the computer device comprising a processor and a memory; the memory has stored therein at least one instruction, at least one program, code set, or instruction set that is loaded and executed by the processor to implement the power demand response method of any one of claims 1 to 5.
8. A computer readable storage medium storing at least one instruction for execution by a processor to implement the power demand response method of any one of claims 1 to 5.
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