基于网络等效的配电网快速供电恢复策略并行化实现

摘要

Modern intelligent distribution network can achieve rapid power recovery by dispatching its "flexible sources" of the demand side. This paper proposes a fast power restoration strategy based on network equivalence and parallelization aiming at the characteristics of intelligent distribution network which can use power network resources flexibly to cope with different electrical energy loss. The algorithm uses special power supply nodes (called equivalent sources) to replace surrounding feeders, adopts parallel computation mode of combining off-line equivalent sources pre-storage with real-time ones. The off-line data is pre-stored and preferred to use. While facing larger electrical energy loss, the algorithm calculates in parallel the real-time equivalent sources corresponding to different dispatching possibilities. In order to further improve the efficiency, the algorithm uses improved adjacency matrix to maintain the radial topology and reconstruct the network efficiently. Several cases of different electrical energy loss are studied to show that this strategy can achieve rapid power recovery by using different support sources reasonably and efficiently.%现代智能配电网在故障后可以调度需求侧的"灵活源"实现快速供电恢复.针对智能配电网的特点,提出了一种基于网络等效和并行化实现的快速供电恢复策略,能够灵活地利用电网资源以应对不同的失电情况.算法将支援线路等效为电源节点(称为等效源点),采用离线等效源点预存储与实时等效源点并行计算相结合的模式:保存并优先使用离线数据;在失电负荷较大时,调取实时数据对不同的调度可能进行并行计算.为进一步提升算法的时效性,利用改进邻接矩阵记录和维护电网拓扑结构,实现网络的高效重构.通过若干个算例,验证了该供电恢复策略在面对不同程度失电时均能合理高效地运用电网的各类支援资源,实现快速供电恢复.