Abstract
A recently emerged microgrid system presents the concept of a prosumer that consumers can also become suppliers, instead of a one-way configuration with separate providers and consumers. The microgrid system allows users to produce electricity, sell it on demand, and purchase them from other users. Unlike conventional centralized power trading, this emerging system aims on providing decentralized, transparent, and secure power trading. In this paper, we introduce a transparent and safe power trading algorithm between users using blockchain. The proposed algorithm has been implemented with an executable distributed code (i.e., smart contract) in an Ethereum blockchain platform. It explores for the power trading with automated operations in a decentralized environment without user intervention. The proposed power trading algorithm is written in the Solidity language and tested on the Ethereum blockchain platform. We also provide the actual code of the power trading algorithm written in the Solidity language.
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Acknowledgements
This research was supported by a Research Grant from Sangmyung University.
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Appendix
Appendix
We provide the smart contract code written in the Solidity language v0.4.25. The major variables have been defined at the beginning part of the code. The functions of the smart contract are then followed.
The magic global variables supported by the Solidity language are used such as now and msg. The magic global variable now is the timestamp that indicates the current time of the smart contract, whereas the magic global variable msg indicates the transaction. For instance, msg.sender refers to the address of the transaction sender and msg.value refers to the amount of the bidding sent in the transaction.
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Myung, S., Lee, JH. Ethereum smart contract-based automated power trading algorithm in a microgrid environment. J Supercomput 76, 4904–4914 (2020). https://doi.org/10.1007/s11227-018-2697-7
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DOI: https://doi.org/10.1007/s11227-018-2697-7