一种基于Bellman-Ford算法的区域市场间分布式电源路由方法
A Distributed Power Routing Method between Regional Markets based on Bellman-Ford Algorithm
摘要：
随着电力工业管制的放松，大的电力用户可以直接从发电商购买电力。对于不同区域市场间的电力交易，有必要研究寻找最便宜的电力交易路径的方法。此外，由于不存在协调员以上的区域市场，电力路由问题必须以分布式的方式解决。以前的研究大多是基于电力电子Transformers。一些研究提出将子网络的能量管理系统作为能量路由器，但没有考虑潮流约束或在某些特定情况下不收敛。我们的方法是基于EMS的多个市场，它节省了成本，通过消除昂贵的电子Transformers，并考虑区域市场作为广义节点，具有高效率的系统与众多的节点。在考虑输电成本和阻塞成本的基础上，采用Bellman-Ford算法确定不同区域市场间输电的最便宜路径，并对算法的收敛性进行了分析。当市场之间不存在回路时，该方法是有效的，并且是收敛的。最后通过一个四市场无回路的算例说明了该方法的有效性。
英文摘要：
With the deregulation of power industry, large power users can buy electricity directly from power producers. For trades between different regional markets, it is necessary to research on the method to find the cheapest route for power exchanging. Moreover, as there exists no coordinator above regional markets, the power routing problem must be solved in a distributed way. Most previous research are based on power electronic transformers. Some research proposed EMS of sub-networks as energy routers, but failed to consider the power flow constraints or did not converge in some specific cases. Our method is based on the EMS of multiple markets, which saves cost by eliminating expensive electronic transformers and has high efficiency in systems with numerous nodes by considering the regional markets as generalized nodes. We take transmission costs and congestion costs into consideration, and uses Bellman-Ford algorithm to determine the cheapest route for power transmission between different regional markets and make convergence analysis about our algorithm. This method proves effective and convergent when there is no loop among the markets. A four-market loop-free case was used to illustrate the efficiency of the method.
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