在综合能源系统(Integrated energy systems,IESs)经济调度问题的分布式优化框架中,节点协同机制的拓扑设计必然受到信息交互方式的约束。现有研究主要分为两类通信协议、同步通信和异步通信。然而,同步通信需要满足时序一致性,等待各通信者之间达成同步响应或确认后才能执行后续操作,这在大规模网络环境中很难实现。该文首先基于Gossip算法的异步特点,提出了一种基于Gossip的异步通信分布式经济调度算法。利用矩阵扰动理论和特征值定理,严格证明了算法的收敛性。进一步地,考虑了两种典型的网络攻击模型,拒绝服务攻击(denial of service,DoS)和虚假数据攻击(false data injection,FDI),设计了一种弹性安全策略以缓解网络攻击对最优经济调度的影响。最后,基于IEEE39-32节点的IES进行算例分析,结合不同的调度场景、攻击者的表现以及同步通信方式的对比,从多个角度验证了所提策略在通信方式和网络安全方面的有效性和优越性。
Abstract
In a distributed optimization framework for the economic dispatch problem of integrated energy systems (IESs)
the topological design of the node collaboration mechanism is necessarily constrained by information interaction. Existing studies are mainly classified into two types of communication protocols
synchronous and asynchronous communication. However
synchronous communication requires timing consistency and waits for a synchronized response or acknowledgement to be received among the communicators before subsequent operations can be executed
which is challenging to achieve in large-scale network environments. In this paper
we propose a distributed economic scheduling algorithm for asynchronous communication
based on the Gossip algorithm
which leverages its asynchronous characteristics. The convergence of the algorithm is rigorously proved using matrix perturbation theory and the eigenvalue theorem. Further
two typical network attack models
Denial of Service (DoS) and False Data Injection (FDI)
are considered
and a resilient security policy is designed to mitigate the impact of network attacks on optimal economic scheduling. Finally
an arithmetic case analysis is performed based on the IES of IEEE39-32 nodes
which verifies the effectiveness and superiority of the proposed strategy in terms of communication methods and network security from multiple perspectives by combining different scheduling scenarios
the performance of the attackers
and the comparison of synchronous communication methods.