【Author】
Yang, Jun; Du, Jianhai
【Source】FRONTIERS IN ENERGY RESEARCH
【Abstract】To reduce the operating cost and enhance the energy utilization efficiency of the integrated energy system (IES), an economic dispatch algorithm is proposed based on finite-time double-consensus. First, an economic dispatch model of IES under two modes of operation, islanded and grid-connected, is constructed considering energy transmission losses. After that, the optimal improved incremental cost and power output allocation of the IES can be found out in finite time. The proposed algorithm contains two finite-time consistency protocols simultaneously that can solve the optimal values of the incremental cost of electricity and heat of integrated energy system, solving the strong coupling problem of multi-energy systems. The proposed algorithm not only has a faster convergence rate but also enables switching freely between the two operation modes. In addition, a distributed method for quickly discovering the total system power mismatch is proposed in the process of algorithm solving. The finite-time convergence of the proposed algorithm is demonstrated. Finally, the IES simulation based on the IEEE 30-node power system and the Bali 32-node thermal system is established. The analysis of the simulation results shows that the algorithm proposed in this paper is effective.
【Keywords】distributed economic dispatch; finite time; double-consensus algorithm; double modes of operation; transmission loss; integrated energy system
【标题】基于综合能源系统有限时间双共识算法的分布式经济调度
【摘要】为降低综合能源系统（IES）的运行成本，提高能源利用效率，提出了一种基于有限时间双共识的经济调度算法。首先，考虑能量传输损耗，构建了孤岛和并网两种运行模式下的IES经济调度模型。之后，可以在有限时间内找到 IES 的最佳改进增量成本和功率输出分配。该算法同时包含两个有限时间一致性协议，可以求解综合能源系统电热增量成本的最优值，解决多能源系统的强耦合问题。所提出的算法不仅具有更快的收敛速度，而且能够在两种操作模式之间自由切换。此外，在算法求解过程中，提出了一种快速发现系统总功率失配的分布式方法。证明了所提出算法的有限时间收敛性。最后，建立了基于IEEE 30节点电力系统和巴厘岛32节点热力系统的IES仿真。仿真结果分析表明，本文提出的算法是有效的。
【关键词】分布式经济调度；有限的时间；双共识算法；双重操作模式；传输损耗；综合能源系统
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