Method and system for peer-to-peer electricity trading based on double-layer blockchain

A system for peer-to-peer electricity trading based on a double-layer blockchain, wherein the system comprises a bulk grid blockchain and a plurality of microgrid blockchains;

• and the system further comprises:
• an acquisition module;
• a first matching module;
• a second matching module;
• a verification module;
• and
• a trading module;
• wherein the acquisition module is configured to acquire an energy consumption plan and an energy purchase price of each of a plurality of subjects and an energy supply plan and an energy selling price of each of the plurality of subjects according to an electricity trading demand of each of the plurality of subjects, and upload the energy consumption plan and the energy purchase price of each of the plurality of subjects and the energy supply plan and the energy selling price of each of the plurality of subjects to endorsement nodes on a microgrid blockchain to which the plurality of subjects belong;
• the first matching module is configured to successively perform a first power dispatching-matching and a second power dispatching-matching between the plurality of subjects through the endorsement nodes on the microgrid blockchain according to the energy consumption plan and the energy purchase price of each of the plurality of subjects, and the energy supply plan and the energy selling price of each of the plurality of subjects, and upload an unsatisfied total energy consumption plan and an energy purchase price of each of a plurality of microgrids and a remaining total energy supply plan and an energy selling price of each of the plurality of microgrids to an endorsement node on the bulk grid blockchain;
• the second matching module is configured to perform a third power dispatching-matching between the plurality of microgrids by the endorsement node on the bulk grid blockchain under a premise that a centralized power system is introduced, according to the unsatisfied total energy consumption plan and the energy purchase price of each of the plurality of microgrids and the remaining total energy supply plan and the energy selling price of each of the plurality of microgrids;
• the verification module is configured to form a trading contract and perform a verification based on information of the first power dispatching-matching, the second power dispatching-matching and the third power dispatching-matching, and then send the information of the first power dispatching-matching, the second power dispatching-matching and the third power dispatching-matching to a sorting node of a microgrid blockchain corresponding to each of two trading subject parties and update the microgrid blockchain corresponding to each of two trading subject parties after passing the verification;
• the trading module is configured to perform an electricity trading based on the trading contract, and record actual trading data on the microgrid blockchain corresponding to each of two trading subject parties.