Blockchain-based green power certification method, apparatus, and system

Patent metadata

Field	Value
Publication number	US-12437306-B2
Application number	US-202218019482-A
Country	US
Kind code	B2
Filing date	Aug 19, 2022
Priority date	Sep 22, 2021
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

The present disclosure provides a blockchain-based green power certification method, apparatus, and system, to pre-process obtained basic data to obtain proof-of-existence data, certify the proof-of-existence data from a production side and a consumption side by using a certification chain and a token chain respectively, and obtain a green power attribute certificate and a green power consumption label if the certification is passed; generate a unique digital identifier for the green power attribute certificate and the green power consumption label separately based on a non-fungible token (NFT), which realizes non-interchangeability, indivisibility, and other characteristics of the certificate and the identifier; and supervise and verify a certification process by using a chain of custody, and generate a corresponding unique blockchain identifier for the certification chain, the token chain, and the chain of custody separately through multi-chain interaction, so as to realize data interaction between blockchains.

First claim

The invention claimed is:

1. A blockchain-based green power certification method, comprising:
pre-processing obtained basic data to obtain structured data and unstructured data, wherein the structured data comprises associated data that maps an entity identifier of a device related to renewable energy into business data of a power business system, and the unstructured data comprises announcement-associated data and electronic contract-associated data in a power business;
performing a proof-of-existence operation for the structured data and the unstructured data on a certification chain to obtain proof-of-existence data, and controlling the certification chain to periodically send the proof-of-existence data to a token chain through multi-chain interaction, wherein the certification chain is a blockchain used to achieve green power attribute certification and certificate issuance, and the token chain is a blockchain used to achieve green power consumption evaluation and consumption label issuance, the multi-chain interaction is to register an identifier for each blockchain, such that each blockchain has a unique blockchain identifier, and data interaction is performed between blockchains based on their own blockchain identifiers;
controlling the certification chain to call a green power certification model and the proof-of-existence data to obtain constraints of the green power certification model, determining, based on the constraints and the proof-of-existence data, whether an attribute of electric energy generated by a power station is a green power attribute, and if the attribute of the electric energy generated by the power station is the green power attribute, generating a green power attribute certificate by using the certification chain, wherein the constraints comprise a first constraint, a second constraint, and a third constraint, the first constraint is a constraint generated based on a planned power generation curve of the power station and a predicted power consumption curve of a power user, the second constraint is a condition for determining whether an on-grid electricity quantity is greater than a settled electricity quantity, and the third constraint is a condition for determining whether the settled electricity quantity is a difference between electricity quantities of a smart electricity meter within power consumption time;
controlling the token chain to call a consumption evaluation model and the proof-of-existence data to determine whether the power user on a power consumption side performs green power consumption, and if the power user on the power consumption side performs the green power consumption, generating a green power consumption label by using the token chain, wherein the consumption evaluation model is an evaluation model generated based on a user environment evaluation parameter and a green power consumption evaluation parameter on the power consumption side, the user environment evaluation parameter is a green rating of a power consumption enterprise or individual, and the green power consumption evaluation parameter is a proportion of green power consumption of the enterprise;
generating a unique digital identifier for the green power attribute certificate and the green power consumption label separately based on a non-fungible token (NFT); and
in a green power attribute certification process of the certification chain and in a green power consumption certification process of the token chain, supervising and verifying, by using a chain of custody, execution information of each node in the certification processes of the certification chain and the token chain; and storing the unique digital identifier in the token chain if the execution information passes the supervision and verification, or storing abnormal associated data in the chain of custody if the execution information does not pass the supervision and verification, wherein the chain of custody performs data interaction with the certification chain and the token chain through the multi-chain interaction in a supervision and verification process, and the execution information comprises operation status information of each node, execution status information of a consensus algorithm, and execution status information of a smart contract;
wherein the business data of the power business system comprises power generation curves, on-grid electricity quantities, settled electricity quantities, ledgers and locations;
wherein the method further comprises:
storing supervision data obtained in the supervision and verification process in the chain of custody, wherein
the storing abnormal associated data in the chain of custody if the execution information does not pass the supervision and verification comprises:
if the execution information does not pass the supervision and verification, controlling the chain of custody to obtain data in the certification process through the multi-chain interaction, processing abnormal data to obtain the abnormal associated data, and storing the abnormal associated data in the chain of custody, wherein the abnormal associated data comprises abnormality pre-warning and prediction data.

2. The method according to claim 1 , wherein the pre-processing obtained basic data to obtain structured data and unstructured data comprises:
obtaining the basic data, comprising device information of a whole production chain of renewable power, the business data of the power business system, and the announcement-associated data and the electronic contract-associated data in the power business;
generating a device code of each device in the whole production chain of the renewable power based on the device information of the whole production chain of the renewable power;
mapping the device code into the business data of the power business system to obtain associated data, and determining the associated data as the structured data; and
standardizing the announcement-associated data and the electronic contract-associated data in the power business, and determining processed data as the unstructured data.

3. The method according to claim 1 , wherein the determining, based on the constraints and the proof-of-existence data, whether an attribute of electric energy generated by a power station is a green power attribute comprises:
in response to that the proof-of-existence data meets all of the first constraint, the second constraint, and the third constraint, and is consistent with a cross-validation result of the entity identifier of the device related to the renewable energy, the business data of the power business system, and the electronic contract-associated data, determining that the attribute of the electric energy generated by the power station is the green power attribute.

4. The method according to claim 1 , wherein the controlling the token chain to call a consumption evaluation model and the proof-of-existence data to determine whether the power user on a power consumption side performs green power consumption comprises:
controlling the token chain to call the consumption evaluation model to obtain the user environment evaluation parameter on the power consumption side;
calculating a value of a user environment evaluation index on the power consumption side based on the user environment evaluation parameter on the power consumption side, as well as a weight, an evaluation score, and a correlation coefficient that correspond to each user environment evaluation parameter on the power consumption side;
controlling the token chain to call the consumption evaluation model to obtain electric energy data of the user on the power consumption side, where the electric energy data includes a sum of renewable energy power generated by a self-built power generation facility, a sum of renewable energy power purchased according to electricity purchas

Assignees

• State Grid Blockchain Tech Beijing Co Ltd
• Beijing Power Exchange Center Co Ltd
• State Grid Digital Tech Holding Co Ltd
• State Grid Corp China
• Jiangxi Power Exchange Center Co Ltd
• Liaoning Power Exchange Center Co Ltd
• East Inner Mongolia Power Exchange Center Company Ltd

Inventors

• Xie Kai
• Wang Dong
• Zhang Xian
• Wang Hejian
• Li Da
• Xie Wen
• Ji Shijie
• Liu Yonghui
• Zhang Nan
• Xuan jiaxing
• Sun Tian
• Bai Desheng
• Zhang Shengnan
• Li Xin
• Chen Gang
• Jia Haiqing
• Zhang Zhe
• Liang Hexiao
• Li Qingchun
• Fan Kun
• Lu Shengzhi
• Yang Chao
• Zhao Liang
• Feng Jingli
• Jia Fan
• Xing Tong
• Zhao Lihua
• Li Guomin
• Su Zhan

Classifications

• H04L9/3265 Primary

  using certificate chains, trees or paths; Hierarchical trust model · CPC title

• H04L9/3213

  using tickets or tokens, e.g. Kerberos (network architectures or network communication protocols for entities authentication using tickets in a packet data network H04L63/0807) · CPC title

• G06Q2220/00

  Business processing using cryptography · CPC title

• G06Q50/06

  Energy or water supply · CPC title

• H04L9/3226

  using a predetermined code, e.g. password, passphrase or PIN (network architectures or network communication protocols for supporting authentication of entities using passwords in a packet data network H04L63/083) · CPC title