Energy Trading Models based on Blockchain

????????? ?????? ?????? ????????? ????????? ????????? ??????????????? ????????? ????????? ??? ??? ?????? ??? ???????????? ???????????? ???????????????. ????????? ??????????????? ???????????????????????? ??????, ?????? ?????? ?????? ?????? ????????? ?????? ????????? ???????????? ??? ???????????? ????????? ?????? ???????????? ????????? ????????????. ?????? ????????? ???????????? ????????????????????? ?????? ?????? ??????????????? ?????? ??????????????? ?????????????????? ????????????. ?????? ?????? ?????? ??? ?????? ???????????? ????????? ?????? ?????? ??? ????????? ????????????????????? ????????? ????????? ??? ?????? ???????????? ????????? ?????????????????????(microgrid)??? ???????????? ??????. ???????????? ???????????????????????? ???????????? ?????? ???????????? ???????????? ???????????? ???????????? (prosumer)??? ????????????. ?????? ?????? ???????????? ?????? ???????????? ???????????? ???????????? ??????????????? ????????? ???????????????????????? ?????? ???????????? ???????????? ????????? P2P(Peer to Peer) ????????? ?????? ???????????? ?????? ???????????? ???????????? ?????? ?????? ??? ?????? ???????????? ???????????? ???. ????????? ????????? ????????????????????? P2P ??????????????? ???????????? ?????? ????????? ??? ????????? ??????????????? ???????????? ??????. ??????, ?????? ??????????????? ?????? ?????????????????? ??? ????????? ????????? ????????????(blockchain) ????????? ???????????? ??????????????? ???????????? ?????? [1]. ??????????????? ??????????????? ???????????? ?????? ???????????? ????????? ???????????? ??? ??? ????????? ???????????? ????????? ?????? ????????? ?????? ???????????? ???????????? ????????? ?????? ??? ????????? ?????? ???????????? ?????? ????????? ????????? ????????? ??? ?????? ????????? ??????. ???????????? ????????? ???????????? ????????? ??? ?????? ???????????? ?????? ?????? ???????????? ?????? ??? ?????? ????????? ????????? ??? ??????. ???????????? ????????? ????????? ???????????? ???????????? ????????? ?????? ??? ????????? ????????????. ??? ??????????????? ????????? ????????? ???????????? ??? ??????????????? ?????? ???????????? ??? ?????? ????????? ?????? ????????? ???????????? ?????? ????????? ??????????????? ????????????. ?????? ????????? ????????? ??? ?????? ?????? ??????(forward secure signature) ????????? ???????????? ???????????? ????????? ????????? ?????? ?????? ????????? ?????? ????????????.The conventional power generation was a method of distributing electric power to each home and factory after generating electric power from a thermal power plant or a nuclear power plant. Today, however, consumers are turning into prosumers who produce and use energy. Therefore, the microgrid, which is a regional power grid that manages small scale energy supply and demand, has been studied. When a distributed network environment is introduced in the microgrid, it can reduce the server construction cost compared to the existing central management system and can enhance security by distributing information. Recently, a blockchain has been attracting attention as one of methods for constructing a distributed transaction system in a distributed network environment. The blockchain was the basis of bitcoin, the first digital cryptocurrency developed by Satoshi Nakamoto in 2009. Blockchain is a distributed ledger connected through a hash. This allows transactions to be performed securely in a distributed network environment without trusted central authority. In this paper, we classify the energy trading method by trading entity and propose a blockchain technique for each method. We also describe a new security consensus block approach by adding a forward secure signature scheme.Maste