考虑可平移负荷和智能软开关的主动配电网故障恢复方法

Fault recovery of active distribution network considering translatable load and soft open point

在配电网发生故障后,主动配电网能够实现用户侧参与功率的实时供需平衡,满足故障后的负荷恢复。用户参与配电网的调度也是提升故障后负荷恢复比例的途径之一,可平移负荷具有较强的可控性,有效提升了主动配电网的灵活性,智能软开关等新兴可控设备的接入,也使负荷的快速供电成为可能。本文建立了考虑可平移负荷和智能软开关的主动配电网故障恢复模型,并考虑了负荷的重要性系数。通过改进的IEEE 33节点算例进行仿真分析,构建单一故障、多点故障、短时故障的场景,验证了本文所提出方法的有效性以及可控装置对故障后负荷恢复量的提升。

After a fault occurs in the distribution network,active distribution network can realize the real-time power supply and demand balance of user side and meet the demand of load recovery after fault.Users'participation in the dispatching of distribution network is also one of the ways to improve the proportion of load recovery.The translational load has strong controllability,which improves the flexibility of active distribution network.The access of new controllable devices,such as soft open point,also makes it possible for power supply quickly.In this paper,a fault recovery model of active distribution network considering translatable load and soft open point is established.The importance coefficient of load is considered.Through the simulation analysis of the modified IEEE 33-node test system,three scenarios of single fault,multi-point fault and short-term fault are built,the effectiveness of the proposed method and the improvement of load recovery after fault by the controllable device are verified.