考虑分布式光伏高效消纳与负荷损失最小的区域配电网应急资源协同配置策略

Coordinated allocation strategy of emergency resource for regional distribution network considering distributed photovoltaic efficient absorption and minimum load loss

为实现应急资源的合理配置,综合考虑区域配电网正常运行和故障运行下的经济性,提出一种采用线路加固和分布式储能的应急资源协调配置策略。利用最大风速法和阈值法模拟得到线路故障情况,并采取基于Kantorovich距离的后向削减法得到区域配电网遭遇极端天气时的源荷分布经典场景。综合考虑正常工况下分布式光伏高效消纳和故障工况下负荷损失最小,构建了包含应急阶段失负荷成本、应急资源投资成本以及正常运行成本的优化模型。以改进的IEEE 33节点配电网为例对所提应急配置策略进行验证分析。结果表明,所提应急资源配置策略可以兼顾分布式光伏高效消纳和负荷损失最小,在减少极端灾害下经济损失的同时,促进区域配电网的低碳经济运行。

In order to achieve rational allocation of emergency resources,taking into account the economics under normal and faulty operation of the regional distribution network,a coordinated allocation strategy of emergency resource using line reinforcement and distributed energy storage is proposed.The maximum wind speed method and the threshold method are used to simulate the line fault situation,and the backward reduction method based on Kantorovich distance is used to obtain the classic scenario of source-load distribution in the regional distribution network when it encounters extreme weather.Considering the efficient absorption of distributed photovoltaic under normal working conditions and the minimum load loss under fault conditions,an optimization model including load loss cost in the emergency stage,emergency resource investment cost and normal operation cost is constructed.The proposed emergency allocation strategy is validated and analyzed based on the example of an improved IEEE 33-bus distribution network.The results show that the proposed emergency resource allocation strategy can balance the efficient absorption of distributed photovoltaic and the minimization of load loss,and realize the low-carbon and economic operation of the regional distribution network while reducing the economic loss under extreme disasters.