Smart grid (SG) is an emerging technology which provides many services to the end users and utilities, such as load management, frequency regulation, and grid stability. Although many solutions exist to provide these services in a secure manner, but these solutions are not adequate keeping in view of the heavy cryptographic primitives execution on these devices. Hence, in this article, GUARDIAN, a blockchain-based secure demand response management scheme is presented so as to take energy trading decisions securely for managing the overall load of residential, commercial, and industrial sectors. In GUARDIAN, the miner nodes, which are block verifiers, are selected using their power consumption and processing power. These nodes are responsible for authenticating the energy transactions in SG. The energy transaction is initialized by an end user which creates the block of transaction to trade the energy. The miner nodes then validate these blocks and adds these in the blockchain. The successful energy trade occurs only for the blocks which are in the blockchain. The proposed scheme is lightweight in terms of communication and computation costs. Moreover, the results obtained demonstrate the effectiveness of proposed scheme for secure demand response management in the SG.

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GUARDIAN：智能电网系统中基于区块链的安全需求响应管理

智能电网 (SG) 是一种新兴技术，可为最终用户和公用事业提供许多服务，例如负载管理、频率调节和电网稳定性。尽管存在许多以安全方式提供这些服务的解决方案，但是鉴于在这些设备上执行繁重的密码原语，这些解决方案是不够的。因此，在本文中，GUARDIAN 提出了一种基于区块链的安全需求响应管理方案，以便安全地做出能源交易决策，以管理住宅、商业和工业部门的整体负荷。在 GUARDIAN 中，作为区块验证者的矿工节点是根据它们的功耗和处理能力来选择的。这些节点负责验证 SG 中的能源交易。能源交易由最终用户初始化，最终用户创建交易块来交易能源。矿工节点然后验证这些块并将它们添加到区块链中。成功的能源交易只发生在区块链中的区块上。所提出的方案在通信和计算成本方面是轻量级的。此外，获得的结果证明了 SG 中安全需求响应管理方案的有效性。