含混合移动储能的灾后配电网电冷负荷保障策略

Electric-cold load guarantee strategy of post-disaster distribution network with hybrid mobile energy storages

现有的灾后配电网夏季应急调度策略普遍从最大化保电角度降低经济损失,未直接度量供冷价值,导致负荷保障成本过高。为此,提出了一种含混合移动储能的灾后配电网电冷负荷保障策略。构建了新型的负荷保障架构,旨在利用移动电储能异地充放电和移动冰储能转移冰蓄冷空调间的储冰,协同保障负荷用能。量化分析了移动电储能和移动冰储能的时空转移、能量变化特性,构建了简化的混合移动储能协同运行模型。在此基础上,以电负荷、冷负荷切除惩罚成本之和为目标,提出了计及潮流约束的配电网负荷保障模型。将优化模型转化为经典的混合整数二阶锥规划问题进行高效求解。算例仿真结果验证了所提策略的合理性与可行性。

The existing summer emergency scheduling strategies of post-disaster distribution network generally reduce economic losses from the perspective of maximizing power conservation,and do not directly measure the cooling value,leading to high load guarantee cost.Therefore,an electric-cold load guarantee strategy of post-disaster distribution network with hybrid mobile energy storages is proposed.A novel load guarantee architecture is constructed,which aims to use mobile electric energy storage to charge and discharge in diffe-rent places and mobile ice energy storage to transfer the stored ices among the ice storage air conditionings to cooperatively guarantee the load energy consumption.The space-time transfer and energy change characteristics of mobile electric energy storage and mobile ice energy storage are quantitatively analyzed,and a simplified collaborative operation model of hybrid mobile energy storages is constructed.On this basis,aiming at the sum of penalty costs of power load and cooling load shedding,a load guarantee model of distribution network considering power flow constraints is proposed.The optimization model is transformed into a classical mixed-integer second order cone programming problem for efficient solution.The simulative results of the example verify the rationality and feasibility of the proposed strategy.