考虑多类开关动作特性差异的配电网两阶段协同负荷恢复模型

Two-stage cooperative load restoration model for distribution network considering characteristic difference of multi-type switch operation

基于灾后配电网恢复流程,提出一种考虑多类开关动作特性差异的配电网两阶段协同负荷恢复模型。首先,分析多类开关协同动作过程并构建考虑故障隔离阶段和服务恢复阶段协同的基本恢复框架;其次,基于此框架建立计及停电孤岛的新型重构约束、开关动作约束、故障隔离约束、配电网运行约束;然后,以两阶段切负荷成本最小为目标函数建立恢复模型,并将其转化为混合整数线性模型;最后,利用改进的IEEE 33节点系统验证所提模型的可行性,结果表明所提模型的实用性更强,且可以有效提高配电网负荷恢复能力。

Based on the restoration process of distribution network after disaster,a two-stage cooperative load restoration model considering the characteristic difference of multi-type switch operation is proposed.Firstly,the cooperative operation process of multi-type switches is analyzed and a basic restoration framework considering the cooperation of fault isolation stage and service restoration stage is constructed.Secondly,based on this framework,the new reconfiguration constraints considering the de-energized islands,switching operation constraints,fault isolation constraints and distribution network operation constraints are established,and then a restoration model with the minimum two-stage load cutting cost as its objective function is established,which is transformed into a mixed integer linear model.Finally,the feasibility of the proposed model is verified by modified IEEE 33-bus system.The results show that the proposed model is more practical and can effectively improve the load restoration capability of distribution network.