采用网络流理论的分区备用模型

Regional Reserve Model Based on Network Flow Theory

采用网络流理论来研究分区备用问题,这是由于网络流理论可以方便地处理分区间的联络线容量约束,而用网络流优化得到的备用方案可以借助新型FACTS技术来实现。从节点和弧两个方面讨论了购买、传输和辅助部分中参数取值等问题,提出将电力系统网络图转换为网络流图的方法,并指出分区备用问题最终可以转换为最小费用流问题。进一步建立基于网络流理论的分区备用数学模型,提出初步的综合策略,并采用实用的最小费用流算法进行求解。最后通过算例验证了模型的有效性和可行性。

For the network flow theory could conveniently deal with the constraint of transmission capacity, and the novel FACTS provide the technology support of the control of power direction, the network flow theory is used to solve the zonal reserve problem in this paper. The parameters of node and arc are discussed in purchase, transmission and ＇ ancillary parts, which will help to transfer electric system to network flow graph. So the zonal reserve problem could be changed into minimum cost flow problem. On the basis of network flow, the mathematic model of zonal reserve is given. The simple integrated strategy of several cases is presented and the practical algorithm of minimum cost flow is employed to solve this problem. Case studies testify the validity and feasibility of this method.