基于矩阵算法的主动配电网交直流混合网络供电恢复策略研究

考虑到直流输电技术的发展，直流配电应用于配电网中是未来配电网的研究重点。本文为解决主动配电网交直流混合网络的供电恢复问题，提出含直流配电线路的主动配电网供电恢复方案，当交流配电线路出现故障时，考虑直流侧配电线路网损、换流器以及分布式电源影响下的供电恢复方案；当直流配电线路出现故障时，考虑转换直流侧运行方式或让失电的直流负荷转入计划孤岛运行模式，以保证直流侧重要负荷的持续供电，分别提出交流侧和直流侧约束条件，并在约束条件下选取网络损耗、线路末端电压越限节点个数以及开关操作次数作为指标构建目标函数，依据矩阵算法对供电恢复过程的不同恢复方案进行大数据分析与处理，得出最优方案。通过改进的IEEE 123节点算例证明，提出的方案能够有效的解决主动配电网的供电恢复问题。

Research on Power Supply Recovery Strategy of AC/DC Hybrid Network Based on Matrix Algorithm in Active Distribution Network

Considering the development of DC transmission technology, the application of DC power distribution in distribution networks is the focus of future distribution network research. In order to solve the power supply recovery problem of AC/DC hybrid network in active distribution network, The article proposes an active distribution network power resto-ration scheme with DC distribution lines. When an AC distribution circuit failure occurs, the power restoration scheme will be considered under the influence of network loss, inverter, and distributed power supply on the DC side of the dis-tribution network; When a fault occurs on the DC distribution circuit, consider converting the DC-side operation mode or transferring the de-energized DC load to the planned island operation mode to ensure continuous power supply for important DC-side loads. The AC side and DC side constraints are proposed separately, under the constraint conditions, Select the network loss, the number of terminal-crossing voltage limit nodes, and the number of switch operations as an indicator,to construct an objective function, according to the matrix algorithm, big data analysis and processing are performed on different recovery schemes of the power restoration process, and the optimal solution is obtained. Through the improved IEEE123 node calculation example, the proposed scheme can effectively solve the power res-toration problem of active distribution networks.