Power grid frequency modulation method and power grid frequency modulation system

Abstract

The application provides a power grid frequency modulation method and system, the method comprising: a power grid node generates frequency modulation demand information and synchronizes the frequency modulation demand information to a block chain; each EV aggregator node generates first frequency modulation resource information corresponding to the node, and if first target demand information is matched in each frequency modulation demand information according to the first frequency modulation resource information, first frequency modulation supply and demand information is generated and synchronized to the block chain; the power grid node performs device line safety checking on the first frequency modulation supply and demand information according to pre-established power grid device line information, and when the checking is passed, a first smart contract signed between the power grid node and the EV aggregator node corresponding to the first frequency modulation supply and demand information is generated, and the first smart contract is synchronized to the block chain; each EV aggregator node pushes charging and discharging task information to each electric vehicle corresponding to the node according to the first smart contract signed by the node, so that each electric vehicle accesses the power grid.

Description

Technical Field

[0001] This application relates to the field of power grid technology, and in particular to a power grid frequency regulation method and a power grid frequency regulation system. Background Technology

[0002] With the continuous increase in the penetration rate of renewable energy and the continuous expansion of the scale of flexible loads such as electric vehicles (EVs), the uncertainties on both the source and load sides pose an increasingly severe challenge to the frequency stability of the power system. The frequency problem is becoming an important bottleneck in the low-carbon transformation path of the power system. The new power system needs more forms of flexible adjustment resources to maintain system balance.

[0003] Electric vehicles, as a clean and environmentally friendly mode of transportation, have become a key focus of development in the transportation sector. Electric vehicles are dispatchable energy storage resources that possess the dual characteristics of both power source and load. They can adjust charging power or shift charging time according to actual conditions when the grid needs it, and can even feed energy back to the grid via V2G (Vehicle-to-Grid) technology. Compared to traditional unidirectional flexible loads that passively accept control, electric vehicles have greater proactive regulation capabilities. However, with the continuous increase in the number of electric vehicles, they have not participated in grid frequency regulation in large numbers, reducing the grid's frequency regulation efficiency. Summary of the Invention

[0004] The purpose of this application is to address at least one of the aforementioned technical defects, particularly the technical defect of low frequency regulation efficiency in the prior art.

[0005] In a first aspect, embodiments of this application provide a power grid frequency regulation method, the method comprising:

[0006] The power grid node generates frequency regulation demand information and synchronizes the frequency regulation demand information to the blockchain, the blockchain including the power grid node and at least one EV aggregator node;

[0007] Each of the EV aggregator nodes generates first frequency modulation resource information corresponding to this node. If, based on the first frequency modulation resource information, a first target demand information is obtained by matching it among the various frequency modulation demand information, then first frequency modulation supply and demand information is generated based on the first target demand information and the first frequency modulation resource information, and the first frequency modulation supply and demand information is synchronized to the blockchain.

[0008] The power grid node performs equipment line security verification on the first frequency regulation supply and demand information based on the pre-established power grid equipment line information, and generates a first smart contract between the power grid node and the EV aggregator node corresponding to the first frequency regulation supply and demand information when the verification is successful, and synchronizes the first smart contract to the blockchain.

[0009] Each EV aggregator node pushes charging and discharging task information to each electric vehicle corresponding to it according to the first smart contract signed by the node, so that each electric vehicle can be connected to the power grid.

[0010] In one embodiment, the blockchain further includes at least one e-commerce node, and the method further includes:

[0011] Each of the e-commerce nodes generates the second frequency modulation resource information corresponding to the node. If the second target demand information is obtained by matching the second frequency modulation resource information with each frequency modulation demand information, then the second frequency modulation supply and demand information is generated based on the second target demand information and the second frequency modulation resource information and the second frequency modulation supply and demand information is synchronized to the blockchain.

[0012] The power grid node performs equipment and line security verification on the second frequency regulation supply and demand information based on the power grid equipment and line information, and generates a second smart contract between the power grid node and the e-commerce node corresponding to the second frequency regulation supply and demand information when the verification is successful, and synchronizes the second smart contract to the blockchain.

[0013] Each of the aforementioned e-commerce nodes will connect frequency regulation resources to the power grid according to the second smart contract signed by this node.

[0014] In one embodiment, the frequency modulation demand information includes a resource demand tag, which is an EV tag and / or an online retailer tag;

[0015] The step of matching the first target demand information from each of the frequency modulation demand information based on the first frequency modulation resource information includes:

[0016] Each EV aggregator node determines each first candidate frequency modulation demand information in each frequency modulation demand information according to each resource demand tag; the resource demand tag of each first candidate frequency modulation demand information includes the EV tag;

[0017] Each EV aggregator node, with the goal of maximizing revenue, matches the first candidate frequency modulation demand information with the first frequency modulation resource information to obtain the first target demand information.

[0018] In one embodiment, the frequency modulation demand information includes a resource demand tag, which is an EV tag and / or an online retailer tag;

[0019] The step of matching the second target demand information from each of the frequency modulation demand information based on the second frequency modulation resource information includes:

[0020] Each of the aforementioned e-commerce nodes determines each second candidate frequency modulation demand information in each of the aforementioned frequency modulation demand information based on each of the aforementioned resource demand tags; the resource demand tags of each second candidate frequency modulation demand information include the e-commerce node tag;

[0021] Each of the aforementioned e-commerce nodes aims to maximize revenue by matching the second candidate frequency modulation demand information with the second frequency modulation resource information, and thus obtaining the second target demand information.

[0022] In one embodiment, the method further includes:

[0023] Each EV aggregator node will synchronize the first frequency modulation resource information corresponding to its node to the blockchain;

[0024] Each of the aforementioned e-commerce nodes will synchronize the second frequency modulation resource information corresponding to its node to the blockchain;

[0025] When the frequency regulation demand information corresponds to a high degree of urgency, the power grid node matches the target resource information among each of the first frequency regulation resource information and each of the second frequency regulation resource information according to the frequency regulation demand information.

[0026] The power grid node performs equipment line security verification on the target resource information based on the power grid equipment line information, and when the verification is successful, generates a third smart contract between the power grid node and the node corresponding to the target resource information, and synchronizes the third smart contract to the blockchain.

[0027] Each EV aggregator node pushes charging and discharging task information to the electric vehicle corresponding to its node according to the third smart contract signed by the node, so that each electric vehicle can be connected to the power grid.

[0028] Each of the aforementioned e-commerce nodes will connect frequency regulation resources to the power grid according to the third smart contract signed by this node.

[0029] In one embodiment, the method further includes: the power grid node monitoring the real-time frequency of the power grid, and, if the real-time frequency meets a preset frequency adjustment rule, performing settlement based on the first smart contract, the second smart contract, and / or the third smart contract.

[0030] In one embodiment, each of the e-commerce nodes generates the second frequency modulation resource information corresponding to this node, including:

[0031] Each retail e-commerce node calculates the first frequency modulation settlement price corresponding to its own node based on the frequency modulation cost value and the first frequency modulation profit value corresponding to its own node, wherein the frequency modulation cost value and the first frequency modulation profit value are both preset.

[0032] Each of the aforementioned e-commerce nodes generates the second frequency modulation resource information corresponding to that node based on the first frequency modulation settlement price corresponding to that node.

[0033] In one embodiment, each EV aggregator node generates first frequency modulation resource information corresponding to this node, including:

[0034] Each EV aggregator node calculates its corresponding second frequency regulation settlement price based on its corresponding electricity cost, battery loss compensation cost, service fee, and second frequency regulation profit value. The electricity cost, battery loss compensation cost, service fee, and second frequency regulation profit value are all preset.

[0035] Each EV aggregator node generates the first frequency modulation resource information corresponding to this node based on the second frequency modulation settlement price corresponding to this node.

[0036] In one embodiment, the method further includes: each EV aggregator node, when synchronized with the first smart contract, marking the first target demand information corresponding to the first smart contract as a satisfied demand.

[0037] Secondly, embodiments of this application also provide a power grid frequency regulation system, the system comprising a power grid node and at least one EV aggregator node, wherein the power grid node and each of the EV aggregator nodes constitute a blockchain; wherein:

[0038] The power grid node is used to generate frequency regulation demand information and synchronize the frequency regulation demand information to the blockchain;

[0039] Each of the EV aggregator nodes is used to generate the first frequency modulation resource information corresponding to the node. If a first target demand information is obtained by matching the first frequency modulation resource information with each frequency modulation demand information, then the first frequency modulation supply and demand information is generated based on the first target demand information and the first frequency modulation resource information and the first frequency modulation supply and demand information is synchronized to the blockchain.

[0040] The power grid node is used to perform equipment line security verification on the first frequency regulation supply and demand information based on the pre-established power grid equipment line information, and generate a first smart contract between the power grid node and the EV aggregator node corresponding to the first frequency regulation supply and demand information when the verification is successful, and synchronize the first smart contract to the blockchain.

[0041] Each EV aggregator node is used to push charging and discharging task information to each electric vehicle corresponding to the node according to the first smart contract signed by the node, so as to enable each electric vehicle to connect to the power grid.

[0042] In the power grid frequency regulation method and system provided in some embodiments of this application, power grid nodes and various EV aggregator nodes constitute a blockchain. Power grid nodes can synchronize frequency regulation demand information to the blockchain, enabling each EV aggregator node to access this information. Each EV aggregator node can match its first frequency regulation resource information with various frequency regulation demand information. If a first target demand information is found, it generates first frequency regulation supply and demand information based on this first target demand information and its corresponding first frequency regulation resource information, and synchronizes it to the blockchain. Upon obtaining the first frequency regulation supply and demand information, the power grid node performs a security verification and generates a first smart contract upon successful verification. EV aggregator nodes can push charging and discharging task information to each electric vehicle corresponding to their node according to the first smart contract, notifying each electric vehicle to connect to the power grid, thereby enabling frequency regulation of the power grid. In this way, frequency regulation demand and frequency regulation resources can be matched in a decentralized manner, accelerating the speed of information dissemination and resource matching. This allows for the rapid identification of EV aggregators that can meet the grid frequency regulation needs among various EV aggregators. Electric vehicles can then be guided to connect to the grid in batches through these identified EV aggregators, enabling them to participate in grid frequency regulation in large quantities and accelerating frequency regulation efficiency. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a diagram illustrating the application environment of a power grid frequency regulation method in one embodiment;

[0045] Figure 2 This is a flowchart illustrating a power grid frequency regulation method in one embodiment;

[0046] Figure 3 This is a schematic diagram of the internal structure of a computer device in one embodiment. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] In one embodiment, the power grid frequency regulation method of this application can be applied to Figure 1 In the application environment shown, e-commerce nodes, power grid nodes, and EV aggregator nodes (i.e., electric vehicle aggregator nodes) can constitute a blockchain. E-commerce nodes refer to the computer equipment held by e-commerce operators, who can use these nodes to publish frequency regulation resource information, search for frequency regulation demand information, and sign smart contracts. Power grid nodes refer to the computer equipment held by the power grid dispatch center, which can use these nodes to publish frequency regulation demand information, perform security verification, and sign smart contracts. EV aggregator nodes refer to the computer equipment held by EV aggregators, which can use these nodes to publish frequency regulation resource information, search for frequency regulation demand information, and sign smart contracts. Electric vehicle users can sign agreements with EV aggregators to receive and respond to charging and discharging task information pushed by the EV aggregators.

[0049] exist Figure 1 In the application environment illustrated and in the description of some embodiments herein, publishing information to the supply pool can be understood as synchronizing information to the blockchain. For example, when a power grid node publishes frequency regulation demand information to the supply pool, it can be understood as the power grid node synchronizing the frequency regulation demand information to the blockchain, so that all nodes in the blockchain can obtain the frequency regulation demand information.

[0050] In one embodiment, this application provides a power grid frequency regulation method, which can be combined with Figure 1 To understand the application environment shown, see the example. Figure 2 As shown, the power grid frequency regulation method may include the following steps:

[0051] S202: The power grid node generates frequency regulation demand information and synchronizes the frequency regulation demand information to the blockchain, the blockchain including the power grid node and at least one EV aggregator node.

[0052] Specifically, grid nodes can generate corresponding frequency regulation demand information based on the grid's frequency regulation needs and publish this information to the supply pool, enabling other nodes in the blockchain to obtain the frequency regulation demand information.

[0053] Furthermore, the frequency regulation demand information in this paper may include the estimated required frequency regulation resources and the estimated frequency regulation settlement price. In one example, the estimated frequency regulation settlement price P of the grid node...网 It can be based on formula P 网 =P 聚 +P 售 +C is used to measure, where P 聚 This refers to the contract settlement price of EV aggregators, P 售 "C" refers to the contract settlement price of the e-commerce platform, while "C" refers to the service fee of the power grid, which may include metering service fees, safety verification service fees, and energy transfer service fees.

[0054] S204: Each of the EV aggregator nodes generates first frequency modulation resource information corresponding to this node. If, based on the first frequency modulation resource information, a first target demand information is obtained by matching it among the various frequency modulation demand information, then first frequency modulation supply and demand information is generated based on the first target demand information and the first frequency modulation resource information, and the first frequency modulation supply and demand information is synchronized to the blockchain.

[0055] Specifically, each EV aggregator node can be held by a separate EV aggregator; in other words, different EV aggregator nodes can correspond to different EV aggregators. Since the electric vehicle users signed up by each EV aggregator are different, and the battery status of each electric vehicle is also different, the frequency modulation resources that each EV aggregator can aggregate will differ, and the frequency modulation resources that the same EV aggregator can aggregate will also differ at different times.

[0056] Each EV aggregator node can integrate the frequency modulation resources it can aggregate to obtain the first frequency modulation resource information corresponding to its node. The first frequency modulation resource information corresponding to each EV aggregator node reflects the frequency modulation resources that the EV aggregator can aggregate. In one example, the first frequency modulation resource information corresponding to each EV aggregator node may include at least one adjustable frequency period, a second frequency modulation settlement price, and the number of frequency modulation resources corresponding to each adjustable frequency period.

[0057] Given the first frequency regulation resource information corresponding to this node, each EV aggregator node can search for matching frequency regulation demand information in the supply pool based on the first frequency regulation resource information corresponding to its own node. If a matching frequency regulation demand information is found, the EV aggregator node can use the matching frequency regulation demand information as the first target demand information, and generate first frequency regulation supply and demand information based on the first target demand information and the first frequency regulation resource information corresponding to its own node, and synchronize the first frequency regulation supply and demand information to the blockchain. The first frequency regulation supply and demand information can reflect the preliminary contract signing intention reached between the grid node and the corresponding EV aggregator node. In one example, the first frequency regulation supply and demand information can simultaneously include the first target demand information and the first frequency regulation resource information corresponding to the first target demand information.

[0058] S206: The power grid node performs equipment line security verification on the first frequency regulation supply and demand information based on the pre-established power grid equipment line information, and generates a first smart contract between the power grid node and the EV aggregator node corresponding to the first frequency regulation supply and demand information when the verification is successful, and synchronizes the first smart contract to the blockchain.

[0059] Specifically, considering that the access of frequency regulation resources may damage power grid lines and / or power grid equipment, whenever an EV aggregator node and a power grid node reach a preliminary contractual agreement, the power grid node can verify whether the access of frequency regulation resources will affect the safe operation of the power grid based on pre-established power grid equipment and line information, thereby achieving safety verification. For example, the power grid node can perform power flow calculations based on power grid equipment and line information and first frequency regulation supply and demand information to achieve safety verification.

[0060] If the verification is successful, the power grid node can generate a first smart contract between the power grid node and the corresponding EV aggregator node, and synchronize the first smart contract to the blockchain to lock the first smart contract and prevent the contract content from being tampered with.

[0061] S208: Each of the EV aggregator nodes pushes charging and discharging task information to each electric vehicle corresponding to the node according to the first smart contract signed by the node, so that each of the electric vehicles can be connected to the power grid.

[0062] Specifically, EV aggregator nodes can obtain various first smart contracts synchronized by the grid nodes. Each EV aggregator node can determine whether there is a first smart contract signed by itself among the synchronized first smart contracts. If so, it can push charging and discharging task information to each electric vehicle corresponding to its node according to the first smart contract signed by itself, so as to notify each electric vehicle to connect to the grid and realize frequency regulation.

[0063] Furthermore, in one example, the power grid frequency regulation method of this application may further include the step of: each EV aggregator node, upon being synchronized with the first smart contract, marking the first target demand information corresponding to the first smart contract as a satisfied demand. In this way, the first target demand information can be removed from the supply pool, preventing the first target demand information from being repeatedly responded to.

[0064] In the power grid frequency regulation method provided in some embodiments of this application, the frequency regulation demand and frequency regulation resources are matched in a decentralized manner, which accelerates the speed of information dissemination and resource matching. In this way, EV aggregators that can meet the power grid frequency regulation demand can be quickly identified among various EV aggregators, and electric vehicles can be guided to connect to the power grid in batches through the identified EV aggregators, so that electric vehicles can participate in the power grid frequency regulation in batches and speed up the frequency regulation efficiency.

[0065] In one embodiment, see Figure 1 Blockchain can also include e-commerce nodes, which can also participate in power grid frequency regulation.

[0066] like Figure 2 As shown, the power grid frequency regulation method of this application may further include the following steps:

[0067] S210: Each of the e-commerce nodes generates the second frequency modulation resource information corresponding to this node. If the second target demand information is obtained by matching the second frequency modulation resource information with the frequency modulation demand information, then the second frequency modulation supply and demand information is generated based on the second target demand information and the second frequency modulation resource information and the second frequency modulation supply and demand information is synchronized to the blockchain.

[0068] Specifically, each e-commerce node can be held by a separate e-commerce platform; in other words, different e-commerce nodes can correspond to different e-commerce platforms. Considering that each e-commerce platform has different access to frequency modulation (FM) resources, each e-commerce node can generate its own second FM resource information based on its available FM resources. This second FM resource information reflects the FM resources that the corresponding e-commerce node can access. In one example, the second FM resource information for each e-commerce node may include at least one adjustable frequency period, a second FM settlement price, and the quantity of FM resources corresponding to each adjustable frequency period.

[0069] Given the second frequency regulation resource information corresponding to this node, each power grid node can search for matching frequency regulation demand information in the supply pool based on its corresponding second frequency regulation resource information. If a matching frequency regulation demand information is found, the power grid node can use this matching frequency regulation demand information as its second target demand information, and generate second frequency regulation supply and demand information based on the second target demand information and its corresponding second frequency regulation resource information, and synchronize the second frequency regulation supply and demand information to the blockchain. The second frequency regulation supply and demand information can reflect the preliminary contract signing intention reached between the power grid node and the corresponding power grid node. In one example, the second frequency regulation supply and demand information can simultaneously include second target demand information and the corresponding second frequency regulation resource information.

[0070] S212: The power grid node performs equipment and line security verification on the second frequency regulation supply and demand information based on the power grid equipment and line information, and generates a second smart contract between the power grid node and the e-commerce node corresponding to the second frequency regulation supply and demand information when the verification is successful, and synchronizes the second smart contract to the blockchain.

[0071] Similar to the scheme of using electric vehicles for frequency regulation, the access of frequency regulation resources by power retailers may potentially damage power grid lines and / or power grid equipment. Therefore, whenever a power retailer node and a power grid node reach a preliminary agreement, the power grid node can verify whether the access of the power retailer's frequency regulation resources will affect the safe operation of the power grid, thereby achieving a security verification. If the verification passes, the power grid node can generate a second smart contract between the power grid node and the corresponding power retailer node, and synchronize this second smart contract to the blockchain. For a detailed explanation of this step, please refer to the relevant description in S206 above, which will not be repeated here.

[0072] S214: Each of the aforementioned e-commerce nodes connects frequency regulation resources to the power grid according to the second smart contract signed by this node.

[0073] Specifically, each e-commerce node can determine whether there is a second smart contract signed by this node among the synchronized second smart contracts. If there is, it can connect the frequency regulation resources corresponding to this node to the power grid according to the second smart contract signed by this node to achieve frequency regulation.

[0074] Furthermore, in one example, the power grid frequency regulation method of this application may further include the step of: each of the retail e-commerce nodes, upon being synchronized with the second smart contract, marking the second target demand information corresponding to the second smart contract as a satisfied demand. In this way, the second target demand information can be removed from the supply pool, preventing it from being repeatedly responded to.

[0075] In this embodiment, frequency modulation can be performed through e-commerce platforms and / or electric vehicles, thereby further improving frequency modulation efficiency.

[0076] In one embodiment, the frequency regulation demand information includes resource demand tags, which are EV tags and / or retailer tags. That is, when generating frequency regulation demand information, the grid node can divide the frequency regulation demand into EV aggregator and retailer portions, and affix corresponding resource demand tags.

[0077] The step of matching the first target demand information from each of the frequency modulation demand information based on the first frequency modulation resource information includes:

[0078] Each EV aggregator node determines each first candidate frequency modulation demand information in each frequency modulation demand information according to each resource demand tag; the resource demand tag of each first candidate frequency modulation demand information includes the EV tag;

[0079] Each EV aggregator node, with the goal of maximizing revenue, matches the first candidate frequency modulation demand information with the first frequency modulation resource information to obtain the first target demand information.

[0080] Specifically, each EV aggregator node can search for frequency modulation (FM) demand information tagged with EVs in the supply pool and match the best FM demand with the goal of maximizing revenue to obtain the first target demand information. In this way, the matching speed of FM demand can be improved, and FM efficiency can be further accelerated.

[0081] In one embodiment, the frequency regulation demand information includes resource demand tags, which are EV tags and / or retailer tags. That is, when generating frequency regulation demand information, the grid node can divide the frequency regulation demand into EV aggregator and retailer portions, and affix corresponding resource demand tags.

[0082] The step of matching the second target demand information from each of the frequency modulation demand information based on the second frequency modulation resource information includes:

[0083] Each of the aforementioned e-commerce nodes determines each second candidate frequency modulation demand information in each of the aforementioned frequency modulation demand information based on each of the aforementioned resource demand tags; the resource demand tag of each second candidate frequency modulation demand information includes the e-commerce node tag;

[0084] Each of the aforementioned e-commerce nodes aims to maximize revenue by matching the second candidate frequency modulation demand information with the second frequency modulation resource information, and thus obtaining the second target demand information.

[0085] Specifically, each retailer node can search for frequency modulation (FM) demand information tagged with "retailer" in the supply pool, and match the optimal FM demand with the goal of maximizing revenue to obtain the second target demand information. This improves the matching speed of FM demand and further accelerates FM modulation efficiency.

[0086] In one embodiment, the power grid frequency regulation method of this application may further include the following steps:

[0087] Each EV aggregator node will synchronize the first frequency modulation resource information corresponding to its node to the blockchain;

[0088] Each of the aforementioned e-commerce nodes will synchronize the second frequency modulation resource information corresponding to its node to the blockchain;

[0089] When the frequency regulation demand information corresponds to a high degree of urgency, the power grid node matches the target resource information among each of the first frequency regulation resource information and each of the second frequency regulation resource information according to the frequency regulation demand information.

[0090] The power grid node performs equipment line security verification on the target resource information based on the power grid equipment line information, and when the verification is successful, generates a third smart contract between the power grid node and the node corresponding to the target resource information, and synchronizes the third smart contract to the blockchain.

[0091] Each EV aggregator node pushes charging and discharging task information to the electric vehicle corresponding to its node according to the third smart contract signed by the node, so that each electric vehicle can be connected to the power grid.

[0092] Each of the aforementioned e-commerce nodes will connect frequency regulation resources to the power grid according to the third smart contract signed by this node.

[0093] Specifically, each EV aggregator node can publish the first frequency regulation resource information corresponding to its node to the supply pool, and each retailer node can publish the second frequency regulation resource information corresponding to its node to the supply pool, so that the grid node can obtain each first frequency regulation resource information and each second frequency regulation resource information.

[0094] When a grid node generates a high-urgency frequency regulation request, it can proactively search the supply pool for first and second frequency regulation resources after publishing the request. This allows it to identify a target resource that can meet the request. Once the target resource is identified, the grid node performs a security check as described in the above embodiments to determine whether the access of the frequency regulation resource will affect the safe operation of the grid. If the security check passes, the grid node generates a third smart contract between itself and the node corresponding to the target resource, and synchronizes this contract to the blockchain. This enables the EV aggregator node or retail e-commerce node that signed the third smart contract to access the frequency regulation resource into the grid to adjust the grid frequency.

[0095] In this embodiment, the power grid nodes can reduce the frequency regulation response time by actively searching for and matching, thereby further improving the frequency regulation efficiency.

[0096] In one embodiment, the power grid frequency regulation method of this application may further include the steps of: the power grid node monitoring the real-time frequency of the power grid, and, if the real-time frequency meets the preset frequency adjustment rules, performing settlement based on the first smart contract, the second smart contract, and / or the third smart contract.

[0097] Specifically, grid nodes can determine whether frequency adjustment is complete based on the real-time frequency of the grid and preset frequency adjustment rules, and thus determine whether the smart contract has been fulfilled. If the smart contract has been fulfilled, the grid node can settle accounts based on the signed smart contract. Furthermore, the grid node can deduct the corresponding service fee and profit from the contract price, and recognize their respective revenues according to the tasks of the EV aggregator and the retailer.

[0098] It is understandable that the specific rules for preset frequency adjustment can be determined based on the actual situation, and this article does not impose specific limitations on them.

[0099] In one embodiment, each of the e-commerce nodes generates the second frequency modulation resource information corresponding to this node, including:

[0100] Each retail e-commerce node calculates the first frequency modulation settlement price corresponding to its own node based on the frequency modulation cost value and the first frequency modulation profit value corresponding to its own node, wherein the frequency modulation cost value and the first frequency modulation profit value are both preset.

[0101] Each of the aforementioned e-commerce nodes generates the second frequency modulation resource information corresponding to that node based on the first frequency modulation settlement price corresponding to that node.

[0102] Thus, the second frequency regulation resource information can include or reflect the first frequency regulation settlement price, enabling electricity retailers or grid nodes to perform demand matching based on the first frequency regulation settlement price. In one example, the first frequency regulation settlement price P 售 It can be done according to formula P 售 The calculation is based on M3 + C3. Here, M3 represents the costs incurred by the e-commerce platform in responding to the contract, i.e., the frequency modulation cost. C3 represents the expected profit of the e-commerce platform responding to the contract, i.e., the first frequency modulation profit.

[0103] In one embodiment, each EV aggregator node generates the first frequency modulation resource information corresponding to this node, including:

[0104] Each EV aggregator node calculates its corresponding second frequency regulation settlement price based on its corresponding electricity cost, battery loss compensation cost, service fee, and second frequency regulation profit value. The electricity cost, battery loss compensation cost, service fee, and second frequency regulation profit value are all preset.

[0105] Each EV aggregator node generates the first frequency modulation resource information corresponding to this node based on the second frequency modulation settlement price corresponding to this node.

[0106] Thus, the first frequency regulation resource information can include or reflect the second frequency regulation settlement price, enabling EV aggregator nodes or grid nodes to perform demand matching based on the first frequency regulation settlement price. In one example, the second frequency regulation settlement price P 聚 It can be done according to formula P 聚 The calculation is based on M1 + M2 + C1 + C2. Here, M1 represents the electricity cost incurred by the EV aggregator in responding to the contract. M2 represents the compensation cost for battery life loss due to discharge when the EV aggregator responds to the contract, i.e., the battery loss compensation cost. C1 represents the service fee value of the EV aggregator, and C2 represents the expected profit value of the EV aggregator responding to the contract, i.e., the second frequency regulation profit value.

[0107] The power grid frequency regulation system provided in the embodiments of this application is described below. The power grid frequency regulation system described below can be referred to in correspondence with the power grid frequency regulation method described above.

[0108] In one embodiment, this application also provides a power grid frequency regulation system, the system comprising a power grid node and at least one EV aggregator node, wherein the power grid node and each of the EV aggregator nodes constitute a blockchain; wherein:

[0109] The power grid node is used to generate frequency regulation demand information and synchronize the frequency regulation demand information to the blockchain;

[0110] Each of the EV aggregator nodes is used to generate the first frequency modulation resource information corresponding to the node. If a first target demand information is obtained by matching the first frequency modulation resource information with each frequency modulation demand information, then the first frequency modulation supply and demand information is generated based on the first target demand information and the first frequency modulation resource information and the first frequency modulation supply and demand information is synchronized to the blockchain.

[0111] The power grid node is used to perform equipment line security verification on the first frequency regulation supply and demand information based on the pre-established power grid equipment line information, and generate a first smart contract between the power grid node and the EV aggregator node corresponding to the first frequency regulation supply and demand information when the verification is successful, and synchronize the first smart contract to the blockchain.

[0112] Each EV aggregator node is used to push charging and discharging task information to each electric vehicle corresponding to the node according to the first smart contract signed by the node, so as to enable each electric vehicle to connect to the power grid.

[0113] In one embodiment, the grid node, EV aggregator node, and / or retailer node can be computer equipment. (Illustratively,) Figure 3 This is a schematic diagram of the internal structure of a computer device provided in an embodiment of this application. (Refer to...) Figure 3The computer device 900 includes a processing component 902, which further includes one or more processors, and memory resources represented by memory 901 for storing instructions, such as application programs, that can be executed by the processing component 902. The application programs stored in memory 901 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 902 is configured to execute instructions to perform the steps of the methods described in any of the above embodiments.

[0114] The computer device 900 may also include a power supply component 903 configured to perform power management of the computer device 900, a wired or wireless network interface 904 configured to connect the computer device 900 to a network, and an input / output (I / O) interface 905. The computer device 900 may operate on an operating system stored in memory 901, such as Windows Server™, Mac OS X™, Unix™, Linux™, Free BSD™, or similar.

[0115] Those skilled in the art will understand that the internal structure of the computer device shown in this application is merely a block diagram of a portion of the structure related to the solution of this application, and does not constitute a limitation on the computer device to which the solution of this application is applied. A specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0116] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. In this document, "a," "an," "the," "the," and "its" may also include plural forms unless the context clearly indicates otherwise. "Multiple" refers to at least two, such as 2, 3, 5, or 8, etc. "And / or" includes any and all combinations of the related listed items.

[0117] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can be referred to each other.

[0118] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power grid frequency regulation method, characterized in that, The method includes: The power grid node generates frequency regulation demand information and synchronizes the frequency regulation demand information to the blockchain, the blockchain including the power grid node, at least one EV aggregator node and at least one retail e-commerce node; Each of the EV aggregator nodes generates first frequency modulation resource information corresponding to this node. If, based on the first frequency modulation resource information, a first target demand information is obtained by matching it among the various frequency modulation demand information, then first frequency modulation supply and demand information is generated based on the first target demand information and the first frequency modulation resource information, and the first frequency modulation supply and demand information is synchronized to the blockchain. Each of the e-commerce nodes generates the second frequency modulation resource information corresponding to the node. If the second target demand information is obtained by matching the second frequency modulation resource information with each frequency modulation demand information, then the second frequency modulation supply and demand information is generated based on the second target demand information and the second frequency modulation resource information and the second frequency modulation supply and demand information is synchronized to the blockchain. The power grid node performs equipment line security verification on the first frequency regulation supply and demand information based on the pre-established power grid equipment line information, and generates a first smart contract between the power grid node and the EV aggregator node corresponding to the first frequency regulation supply and demand information when the verification is successful, and synchronizes the first smart contract to the blockchain. The power grid node performs equipment and line security verification on the second frequency regulation supply and demand information based on the power grid equipment and line information, and generates a second smart contract between the power grid node and the e-commerce node corresponding to the second frequency regulation supply and demand information when the verification is successful, and synchronizes the second smart contract to the blockchain. Each EV aggregator node pushes charging and discharging task information to each electric vehicle corresponding to it according to the first smart contract signed by the node, so that each electric vehicle can be connected to the power grid. Each of the aforementioned retail e-commerce nodes will connect frequency regulation resources to the power grid according to the second smart contract signed by this node; Each EV aggregator node will synchronize the first frequency modulation resource information corresponding to its node to the blockchain; Each of the aforementioned e-commerce nodes will synchronize the second frequency modulation resource information corresponding to its node to the blockchain; When the frequency regulation demand information corresponds to a high degree of urgency, the power grid node matches the target resource information among each of the first frequency regulation resource information and each of the second frequency regulation resource information according to the frequency regulation demand information. The power grid node performs equipment line security verification on the target resource information based on the power grid equipment line information, and when the verification is successful, generates a third smart contract between the power grid node and the node corresponding to the target resource information, and synchronizes the third smart contract to the blockchain. Each EV aggregator node pushes charging and discharging task information to the electric vehicle corresponding to its node according to the third smart contract signed by the node, so that each electric vehicle can be connected to the power grid. Each of the aforementioned e-commerce nodes will connect frequency regulation resources to the power grid according to the third smart contract signed by this node.

2. The power grid frequency regulation method according to claim 1, characterized in that, The frequency modulation demand information includes resource demand tags, which are EV tags and / or e-commerce platform tags; The step of matching the first target demand information from each of the frequency modulation demand information based on the first frequency modulation resource information includes: Each of the EV aggregator nodes determines each first candidate frequency modulation demand information based on each of the resource demand tags and each of the frequency modulation demand information; Each resource requirement tag of the first candidate frequency modulation requirement information includes the EV tag; Each EV aggregator node, with the goal of maximizing revenue, matches the first candidate frequency modulation demand information with the first frequency modulation resource information to obtain the first target demand information.

3. The power grid frequency regulation method according to claim 1, characterized in that, The frequency modulation demand information includes resource demand tags, which are EV tags and / or e-commerce platform tags; The step of matching the second target demand information from each of the frequency modulation demand information based on the second frequency modulation resource information includes: Each of the aforementioned e-commerce nodes determines each second candidate frequency modulation demand information in each of the aforementioned frequency modulation demand information based on each of the aforementioned resource demand tags; Each resource demand tag for the second candidate frequency modulation demand information includes the retailer tag; Each of the aforementioned e-commerce nodes aims to maximize revenue by matching the second candidate frequency modulation demand information with the second frequency modulation resource information, and thus obtaining the second target demand information.

4. The power grid frequency regulation method according to claim 1, characterized in that, The method further includes: The power grid node monitors the real-time frequency of the power grid and, when the real-time frequency meets the preset frequency adjustment rules, performs settlement based on the first smart contract, the second smart contract, and / or the third smart contract.

5. The power grid frequency regulation method according to any one of claims 2 to 4, characterized in that, Each of the aforementioned e-commerce nodes generates the second frequency modulation resource information corresponding to this node, including: Each retail e-commerce node calculates the first frequency modulation settlement price corresponding to its own node based on the frequency modulation cost value and the first frequency modulation profit value corresponding to its own node, wherein the frequency modulation cost value and the first frequency modulation profit value are both preset. Each of the aforementioned e-commerce nodes generates the second frequency modulation resource information corresponding to that node based on the first frequency modulation settlement price corresponding to that node.

6. The power grid frequency regulation method according to any one of claims 1 to 4, characterized in that, Each of the EV aggregator nodes generates the first frequency modulation resource information corresponding to this node, including: Each EV aggregator node calculates its corresponding second frequency regulation settlement price based on its corresponding electricity cost, battery loss compensation cost, service fee, and second frequency regulation profit value. The electricity cost, battery loss compensation cost, service fee, and second frequency regulation profit value are all preset. Each EV aggregator node generates the first frequency modulation resource information corresponding to this node based on the second frequency modulation settlement price corresponding to this node.

7. The power grid frequency regulation method according to any one of claims 1 to 4, characterized in that, The method further includes: When each EV aggregator node is synchronized with the first smart contract, it marks the first target demand information corresponding to the first smart contract as having met the demand.

8. A power grid frequency regulation system, characterized in that, The system includes a power grid node, at least one EV aggregator node, and at least one e-commerce retailer node, wherein the power grid node, each of the EV aggregator node, and each of the e-commerce retailer nodes constitute a blockchain; wherein: The power grid node is used to generate frequency regulation demand information and synchronize the frequency regulation demand information to the blockchain; Each of the EV aggregator nodes is used to generate the first frequency modulation resource information corresponding to the node. If a first target demand information is obtained by matching the first frequency modulation resource information with each frequency modulation demand information, then the first frequency modulation supply and demand information is generated based on the first target demand information and the first frequency modulation resource information and the first frequency modulation supply and demand information is synchronized to the blockchain. Each of the aforementioned e-commerce nodes is used to generate the second frequency modulation resource information corresponding to the node. If a second target demand information is obtained by matching the second frequency modulation resource information with each of the frequency modulation demand information, then a second frequency modulation supply and demand information is generated based on the second target demand information and the second frequency modulation resource information, and the second frequency modulation supply and demand information is synchronized to the blockchain. The power grid node is used to perform equipment line security verification on the first frequency regulation supply and demand information based on the pre-established power grid equipment line information, and generate a first smart contract between the power grid node and the EV aggregator node corresponding to the first frequency regulation supply and demand information when the verification is successful, and synchronize the first smart contract to the blockchain. The power grid node is used to perform equipment line security verification on the second frequency regulation supply and demand information based on the power grid equipment line information, and generate a second smart contract between the power grid node and the e-commerce node corresponding to the second frequency regulation supply and demand information when the verification is successful, and synchronize the second smart contract to the blockchain. Each of the EV aggregator nodes is used to push charging and discharging task information to each electric vehicle corresponding to the node according to the first smart contract signed by the node, so that each of the electric vehicles can be connected to the power grid. Each of the aforementioned e-commerce nodes is used to connect frequency regulation resources to the power grid according to the second smart contract signed by the node; Each EV aggregator node is used to synchronize the first frequency modulation resource information corresponding to its node to the blockchain; Each of the aforementioned e-commerce nodes is used to synchronize the second frequency modulation resource information corresponding to this node to the blockchain; The power grid node is used to match target resource information among each of the first frequency regulation resource information and each of the second frequency regulation resource information when the frequency regulation demand information corresponds to a high degree of urgency. The power grid node is used to perform equipment line security verification on the target resource information based on the power grid equipment line information, and when the verification is successful, generate a third smart contract between the power grid node and the node corresponding to the target resource information, and synchronize the third smart contract to the blockchain. Each of the EV aggregator nodes is used to push charging and discharging task information to the electric vehicles corresponding to the node according to the third smart contract signed by the node, so that each of the electric vehicles can be connected to the power grid. Each of the aforementioned e-commerce nodes is used to connect frequency regulation resources to the power grid according to a third smart contract signed by the node.

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