CN116937547A - Virtual power plant demand response method and system based on intelligent contract - Google Patents

Virtual power plant demand response method and system based on intelligent contract Download PDF

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Publication number
CN116937547A
CN116937547A CN202310863887.6A CN202310863887A CN116937547A CN 116937547 A CN116937547 A CN 116937547A CN 202310863887 A CN202310863887 A CN 202310863887A CN 116937547 A CN116937547 A CN 116937547A
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China
Prior art keywords
demand response
power plant
blockchain
virtual power
policy
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Pending
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CN202310863887.6A
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Chinese (zh)
Inventor
蔡莹
王莉
余志文
张扬
邱朝明
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Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd
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Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd
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Priority to CN202310863887.6A priority Critical patent/CN116937547A/en
Publication of CN116937547A publication Critical patent/CN116937547A/en
Pending legal-status Critical Current

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    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00028—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
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    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
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Abstract

The invention discloses a virtual power plant demand response method and a system based on intelligent contracts, wherein the method comprises the following steps: deploying intelligent contracts to the blockchain, issuing demand response policies to the main chain, and synchronizing to the side chains; the resource layer equipment sets a local electricity utilization policy and is used as a side chain node to acquire a demand response policy in real time; when meeting the demand response policy, automatically responding, signing the electronic certificate for proving the self behavior, and sending an aggregate signature request to a load aggregation layer gateway; the load aggregation layer gateway carries out aggregation signature and triggers corresponding intelligent contracts on the main chain; and the intelligent contract is checked and signed, contract transaction subsidy is issued, and account information is updated. According to the invention, the automation and the intellectualization of the electric power transaction are realized through the intelligent contract, and the capacity of load adjustment and the demand response speed are improved. The side chain technology is used for integrating scattered load resources, and the aggregated signature is used for triggering the intelligent contract, so that the blocking possibly caused by high-concurrency requests of the scattered resources is solved.

Description

Virtual power plant demand response method and system based on intelligent contract
Technical Field
The invention relates to the technical field of virtual power plant management, in particular to a virtual power plant demand response method and system based on intelligent contracts.
Background
In order to achieve sustainable development, energy conversion has become an important development focus in the power industry today, and more renewable energy sources are introduced into energy systems. However, these energy resources are scattered and difficult to predict, and thus are difficult to make efficient use. Meanwhile, the conventional central centralized power system faces various problems such as power failure, power load fluctuation, and the like. Thus, virtual power plant technology has evolved. The virtual power plant concentrates the scattered energy resources to form a unified power system, so that the efficiency and reliability of power transaction are improved.
Demand response is one of the main goals of virtual power plant management. The demand response is mainly divided into peak clipping response and valley filling response, wherein the peak clipping response refers to the reduction of electricity consumption of a user in the electricity consumption peak period so as to meet the integral electricity consumption demand; the valley filling response means that under the condition of abundant power supply, users are encouraged to use electricity, and energy waste is reduced. Currently, the following problems exist with demand response management of virtual power plants:
first, the response speed is slow.
Second, sporadic resources are inconvenient to participate and high concurrency requests may cause blocking.
In view of this, there is a need for improvements to existing virtual power plant demand response methods to automate the demand response process and solve the problems of inconvenient participation of sporadic resources and possible blocking due to high concurrency requests.
Disclosure of Invention
Aiming at the defects, the technical problem to be solved by the invention is to provide a virtual power plant demand response method and system based on intelligent contracts, so as to solve the problems that the response speed is low, scattered resources are inconvenient to participate, and high concurrent requests possibly cause blockage in the prior art.
For this purpose, the virtual power plant demand response method based on intelligent contracts provided by the invention comprises the following steps:
each virtual power plant deploys intelligent contracts to the blockchain and issues a demand response policy to the blockchain backbone;
synchronizing a demand response strategy on the blockchain backbone to the blockchain side chains;
each resource layer device is respectively provided with a local power utilization strategy and is used as a block chain side chain node to acquire a virtual power plant demand response policy on a side chain in real time;
when the local power utilization policy of the resource layer equipment meets the virtual power plant demand response policy, automatically responding to the virtual power plant demand response policy;
after the resource layer equipment completes the response of the demand response policy of the virtual power plant, signing an electronic certificate for proving the behavior of the resource layer equipment, and sending an aggregate signature request to a load aggregation layer gateway;
after receiving the aggregate signature request of each resource layer device, the load aggregation layer gateway carries out aggregate signature and triggers corresponding intelligent contracts on the main chain;
and (3) intelligent contract signing on the main chain, completing contract transaction, automatically issuing contract transaction subsidizing to corresponding resource layer equipment, and updating account information of the resource layer equipment to the blockchain main chain.
In the above technical method, preferably, the resource layer device may update its own local power utilization policy at any time. .
In the above technical method, preferably, the load aggregation layer gateway is used as a node for anchoring the main chain and the side chain in a bidirectional manner, and is synchronized to the side chain when the data on the main chain is found to update the latest virtual power plant demand response policy.
In the above technical method, preferably, after the load aggregation layer gateway is started, the blockchain main chain and the side chain are anchored bi-directionally, and the demand response policy and the user information on the main chain are synchronized to the side chain.
In the above technical method, preferably, when a new aggregate signature request is received, the load aggregation layer gateway calculates the latest aggregate signature through interaction, and checks whether the upper limit of the number of signatures is reached, and if the upper limit is reached, triggers the intelligent contract.
In the above technical method, preferably, a timer is set in the load aggregation layer gateway, and when a certain time is reached, the timer is triggered to enable the aggregation signature currently waiting to trigger the intelligent contract.
In the above technical method, preferably, when the smart contract is triggered, the smart contract first verifies the correctness of the signature, and after ensuring that the signature is correct, the power consumption user meeting the demand response is subsidized, and the resource layer device state is updated.
The invention also provides a virtual power plant demand response system based on intelligent contracts, which comprises a blockchain and a load aggregation layer gateway, wherein the load aggregation layer gateway is provided with an aggregation signature component, is used as a main chain node and a side chain node of the blockchain at the same time, is used for bidirectionally anchoring the main chain and the side chain, synchronizing information on the side chain and the main chain,
each virtual power plant deploys intelligent contracts to the blockchain and issues a demand response policy to the blockchain backbone;
the load aggregation layer gateway synchronizes a demand response strategy on a blockchain main chain to a blockchain side chain;
each resource layer device is respectively provided with a local power utilization strategy and is used as a block chain side chain node to acquire a virtual power plant demand response policy on a side chain in real time; when the local power utilization policy of the resource layer equipment meets the virtual power plant demand response policy, automatically responding to the virtual power plant demand response policy; after the resource layer equipment completes the response of the demand response policy of the virtual power plant, signing an electronic certificate for proving the behavior of the resource layer equipment, and sending an aggregate signature request to a load aggregation layer gateway;
after the load aggregation layer gateway receives the aggregation signature request of each resource layer device, the aggregation signature component realizes aggregation signature through interaction and triggers corresponding intelligent contracts on the main chain;
and (3) intelligent contract signing on the main chain, completing contract transaction, automatically issuing contract transaction subsidizing to corresponding resource layer equipment, and updating account information of the resource layer equipment to the blockchain main chain.
In the above system, preferably, the resource layer device may update its own local power consumption policy at any time, and the resource layer device may update its own local power consumption policy at any time.
In the above system, preferably, a timer is set in the load aggregation layer gateway, and when a certain time is reached, the timer is triggered, so that the aggregation signature waiting currently triggers the intelligent contract.
According to the technical scheme, the virtual power plant demand response method based on the intelligent contract solves the problems that the response speed is low, scattered resources are inconvenient to participate, and high concurrent requests possibly cause blocking in the prior art. Compared with the prior art, the invention has the following beneficial effects:
the intelligent contract is used for realizing the automation and the intellectualization of the electric power transaction, completing the dispensing of the demand response subsidy, carrying out the load adjustment on the electricity consumption peak period and the electricity consumption valley period, and improving the capacity of the load adjustment and the demand response speed. The side chain technology is used for synchronizing the demand response policy information of the virtual power plant to the side chain to inform the resource layer equipment, scattered load resources are integrated in the mode, a larger power system is formed, and more efficient and reliable power dispatching is achieved. And meanwhile, integrating user information, aggregating the signatures in the area by using the aggregated signature, and triggering an intelligent contract, so that the blocking possibly caused by high-concurrency requests of scattered resources is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will make brief description and illustrations of the drawings used in the description of the embodiments of the present invention or the prior art. It will be apparent to those of ordinary skill in the art that the drawings in the following description are only a partial embodiment of the invention and that other drawings may be produced from these drawings without the benefit of the inventive faculty.
FIG. 1 is a schematic diagram of a virtual power plant demand response system based on intelligent contracts in accordance with the present invention;
FIG. 2 is a flow chart of a virtual power plant demand response method based on intelligent contracts according to the present invention;
fig. 3 is a flowchart illustrating the operation of the load aggregation layer gateway according to the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived from the embodiments of the invention without creative efforts, are within the protection scope of the invention.
In order to make the explanation and the description of the technical solution and the implementation of the present invention clearer, several preferred embodiments for implementing the technical solution of the present invention are described below.
In this document, the terms "inner, outer", "front, rear", and "left, right" are expressions based on the usage status of the product, and it is apparent that the usage of the corresponding terms does not limit the scope of the present solution.
The invention combines intelligent contract and side chain technology with the virtual power plant, and provides a method with higher response speed and higher safety for peak clipping response and valley filling response of the virtual power plant. The intelligent contract is used for realizing the automation and the intellectualization of the electric power transaction, completing the dispensing of the demand response subsidy, carrying out the load adjustment on the electricity consumption peak period and the electricity consumption valley period, and improving the capacity of the load adjustment and the demand response speed. The side chain technology is used for synchronizing the demand response policy information of the virtual power plant to the side chain to inform the resource layer equipment, scattered load resources are integrated in the mode, a larger power system is formed, and more efficient and reliable power dispatching is achieved. And meanwhile, integrating user information, aggregating the signatures in the area by using the aggregated signature, and triggering an intelligent contract, so that the blocking possibly caused by high-concurrency requests of scattered resources is solved.
The intelligent contract used in the present invention is an automated contract based on blockchain technology that can automatically execute predetermined terms without manual intervention. By using the blockchain technology, a decentralised, non-tamperable, safe and credible transaction environment is provided. On a blockchain, the intelligent contracts are stored in the blockchain network in the form of codes, once written into the blockchain, the intelligent contracts cannot be changed, and the security and the non-tamper property of the contracts can be ensured.
FIG. 1 illustrates an architecture diagram of a virtual power plant demand response system based on smart contracts, as shown in FIG. 1, the virtual power plant demand response system based on smart contracts provided by the present invention includes a blockchain and an aggregate signature component, the aggregate signature component being disposed on a load aggregation layer gateway.
The blockchain is used for issuing a demand response policy, storing account information of the resource layer equipment and deploying intelligent contracts.
The aggregated signature component is used for relieving intelligent contract congestion and guaranteeing transaction integrity and reliability.
Virtual power plants are entities that formulate demand response policies, deploy response smart contracts, and are nodes of the blockchain backbone. And the virtual power plant issues a demand response policy on the blockchain main chain, writes corresponding intelligent contracts and deploys on the blockchain main chain.
The load polymerization layer gateway is used as the nodes of the main chain and the side chain simultaneously, the main chain and the side chain are anchored bidirectionally, and the information on the side chain and the main chain is synchronized. When the load aggregation layer gateway discovers that a new demand response policy exists on the main chain, synchronizing information on the side chain and the main chain, updating the updated demand response policy and resource layer equipment account information on the side chain, and completing the issuing of the information; and is also the subject of aggregating signatures of resource layer devices and triggering intelligent contracts.
The resource layer device is the subject of the demand response virtual power plant demand response policy and is also a side-chain participant. And (3) formulating a power utilization policy locally, reading a demand response policy from a side chain, responding by combining the demand response policy, completing demand response, and sending the verification of completing the demand response policy to the load aggregation layer gateway after signing.
And the load aggregation layer gateway aggregates the received signatures and uniformly transmits the aggregated signatures to the intelligent contracts. When the intelligent contract is triggered, the intelligent contract firstly verifies the correctness of the signature, and after the correctness of the signature is ensured, the resource layer equipment meeting the demand response is subsidized according to the demand response policy, and the account information of the resource layer equipment is updated.
As shown in fig. 2, the method for responding to the demand of the virtual power plant based on the intelligent contract provided by the invention comprises the following steps:
in step 110, each virtual power plant deploys a smart contract onto the blockchain, and then issues a demand response policy to the blockchain backbone.
The demand response policy is a condition of a trade response contract, for example, 10 to 12 points late, to supply power to the virtual power plant, and 0.1 yuan per degree of electric subsidy. The smart contracts are used to enable subsidy delivery of virtual power plant trade responses. The aim of deploying the intelligent contract is to prevent the situation that after the virtual power plant issues the demand response policy, the intelligent contract is not deployed, so that the resource layer equipment cannot trigger the intelligent contract after responding to the demand response policy.
The virtual power plant issues the demand response policy to the main chain through the blockchain technology, so that the security and the non-tamper resistance of the demand response policy are ensured.
In step 120, the demand response policy of the virtual power plant on the main chain is synchronized by the load aggregation layer gateway to the blockchain side chain for informing the resource layer devices on the side chain.
The resource layer devices may be discrete individual user devices.
Specifically, the load aggregation layer gateway serves as a node for anchoring the main chain and the side chain in a bidirectional manner, and synchronizes the data on the main chain to the side chain when the latest virtual power plant demand response policy is updated.
And 130, each resource layer device respectively sets a local power utilization policy of the device and is used as a side chain node of the blockchain to acquire a virtual power plant demand response policy on the side chain in real time. When the resource tier device local power usage policy meets the virtual power plant demand response policy, this automatically responds to the virtual power plant demand response policy.
For example, the local power use policy of the resource layer device may be 10-12-point late to power out exactly matching the issue demand response policy.
The resource layer device can update the local power utilization strategy of the resource layer device at any time.
And 140, after the resource layer equipment completes the demand response policy response of the virtual power plant, signing the electronic certificate for proving the behavior of the resource layer equipment, and sending an aggregate signature request to the load aggregation layer gateway. For example, the power supply credential signature is sent to the load aggregation layer gateway.
And 150, after receiving the aggregate signature request of each resource layer device, the load aggregation layer gateway performs aggregate signature and triggers the corresponding intelligent contract on the main chain.
Step 160, intelligent contract signing on the main chain automatically distributes contract transaction subsidizing to the account of the corresponding resource layer equipment, and updates the account information of the resource layer equipment to the blockchain main chain.
The account information of the resource layer equipment comprises user balance, and after the transaction response is completed, the user balance in the account information of the resource layer equipment is mainly updated.
According to the invention, the contract transaction subsidy is automatically approved and issued by the intelligent contract, the demand response policy response is automatically completed according to the local power utilization policy formulated by the resource layer equipment, no matter in the resource layer equipment end or the virtual power plant end, almost no manual participation exists, and the demand response speed and the reliability are greatly improved.
Meanwhile, scattered resources (such as residential users) which cannot participate in the demand response policy response of the virtual power plant before are also included in the object of the demand response, so that the scattered resources which are scattered and not easy to dispatch are utilized, and the influence range and the adjustable range of the demand response are improved.
FIG. 3 shows the workflow of a load aggregation layer gateway, after a load aggregation layer gateway is started, firstly, bi-directionally anchoring a blockchain main chain and a side chain, synchronizing a demand response policy and user information on the main chain to the side chain, waiting for receiving an aggregate signature request after the steps are completed, and when a new aggregate signature request is received, calculating the latest aggregate signature through interaction, and checking whether the upper limit of the number of signatures is reached or not, and if the upper limit is reached, triggering an intelligent contract; in order to prevent starvation caused by too few aggregated signature requests, a timer is designed in the load aggregation layer gateway, and when a certain time is reached, the timer is triggered to enable the aggregated signature currently waiting to trigger the intelligent contract.
By combining the description of the specific embodiments, the virtual power plant demand response method based on the intelligent contract provided by the invention has the following advantages compared with the prior art:
first, the automation and the intellectualization of demand response are realized through intelligent contracts, the speed of demand response is improved, the user participation is enlarged, and the scheduling capability of the virtual power plant is improved. .
Secondly, ciphertext data is used for uplink storage, and traceability of response process data is achieved.
Thirdly, after the power supply bureau publishes the winner of the present offer, any aggregator participating in the present offer can download the declaration information of the winner of the offer from the blockchain according to the ID of the winner, and verify the correctness of priority ordering through a decryption algorithm, thereby ensuring fair competition.
Finally, it is also noted that the terms "comprises," "comprising," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The present invention is not limited to the above-mentioned preferred embodiments, and any person who can learn the structural changes made under the teaching of the present invention can fall within the scope of the present invention if the present invention has the same or similar technical solutions.

Claims (10)

1. A virtual power plant demand response method based on intelligent contracts, comprising the steps of:
each virtual power plant deploys intelligent contracts to the blockchain and issues a demand response policy to the blockchain backbone;
synchronizing a demand response strategy on the blockchain backbone to the blockchain side chains;
each resource layer device is respectively provided with a local power utilization strategy and is used as a block chain side chain node to acquire a virtual power plant demand response policy on a side chain in real time;
when the local power utilization policy of the resource layer equipment meets the virtual power plant demand response policy, automatically responding to the virtual power plant demand response policy;
after the resource layer equipment completes the response of the demand response policy of the virtual power plant, signing an electronic certificate for proving the behavior of the resource layer equipment, and sending an aggregate signature request to a load aggregation layer gateway;
after receiving the aggregate signature request of each resource layer device, the load aggregation layer gateway carries out aggregate signature and triggers corresponding intelligent contracts on the main chain;
and (3) intelligent contract signing on the main chain, completing contract transaction, automatically issuing contract transaction subsidizing to corresponding resource layer equipment, and updating account information of the resource layer equipment to the blockchain main chain.
2. The method of claim 1, wherein the resource layer device can update its own local power usage policy at any time.
3. The method of claim 1, wherein the load aggregation layer gateway acts as a node that anchors the backbone with the side chains in both directions, synchronizing the backbone data to the side chains when it is found that the latest virtual power plant demand response policy is updated.
4. The method of claim 1 wherein after the loadaggregation layer gateway is booted, the blockchain backbone and the side chains are first bi-directionally anchored, and the demand response policy and the user information on the backbone are synchronized to the side chains.
5. The method of claim 1, wherein upon receipt of a new aggregate signature request, the load aggregation layer gateway calculates the latest aggregate signature by interaction while checking whether an upper limit of the number of signatures is reached, and if so, triggers the intelligent contract.
6. The method of claim 5, wherein a timer is provided in the load aggregation layer gateway, the timer triggering when a certain time is reached to allow the aggregated signature currently waiting to trigger the smart contract.
7. The method of claim 1, wherein when the smart contract is triggered, the smart contract first verifies the correctness of the signature, and after ensuring that the signature is correct, subsidizes the power consumer who meets the demand response, and updates the resource layer device state.
8. The virtual power plant demand response system based on intelligent contracts comprises a blockchain, and is characterized by further comprising a load aggregation layer gateway, wherein the load aggregation layer gateway is provided with an aggregation signature component, is used as a main chain node and a side chain node of the blockchain at the same time, is used for bidirectionally anchoring the main chain and the side chain, synchronizing information on the side chain and the main chain,
each virtual power plant deploys intelligent contracts to the blockchain and issues a demand response policy to the blockchain backbone;
the load aggregation layer gateway synchronizes a demand response strategy on a blockchain main chain to a blockchain side chain;
each resource layer device is respectively provided with a local power utilization strategy and is used as a block chain side chain node to acquire a virtual power plant demand response policy on a side chain in real time; when the local power utilization policy of the resource layer equipment meets the virtual power plant demand response policy, automatically responding to the virtual power plant demand response policy; after the resource layer equipment completes the response of the demand response policy of the virtual power plant, signing an electronic certificate for proving the behavior of the resource layer equipment, and sending an aggregate signature request to a load aggregation layer gateway;
after the load aggregation layer gateway receives the aggregation signature request of each resource layer device, the aggregation signature component realizes aggregation signature through interaction and triggers corresponding intelligent contracts on the main chain;
and (3) intelligent contract signing on the main chain, completing contract transaction, automatically issuing contract transaction subsidizing to corresponding resource layer equipment, and updating account information of the resource layer equipment to the blockchain main chain.
9. The system of claim 8, wherein the resource layer device can update its own local power usage policy at any time.
10. The system of claim 9, wherein a timer is provided in the load aggregation layer gateway, the timer triggering when a certain time is reached to allow the aggregate signature currently waiting to trigger the smart contract.
CN202310863887.6A 2023-07-14 2023-07-14 Virtual power plant demand response method and system based on intelligent contract Pending CN116937547A (en)

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