考虑冲击负荷影响的舰船电力系统储-荷重构优化策略

Optimization Strategy for Storage-Load Reconstruction of Ship Power System Considering the Impact of Impact Loads

针对舰船由于受损而导致大功率冲击负荷需要直连电网所引发的频率安全问题,提出了一种基于储能灵活支撑下,考虑冲击负荷影响的舰船配电系统储-荷重构优化策略。首先,为评估投入冲击负荷对系统频率安全的影响及配置储能对系统的支撑效果,根据两者的实际工作特性进行建模分析,建立了适应舰船电力系统的频率响应模型。在此模型的基础上构建了基于系统的不同受损状况下的系统频率安全运行约束,将其简化为适宜求解的系统实际配置组合问题。其次,为满足舰船电力系统运行需求,建立了以最大恢复负荷权重值为优化目标的多约束重构优化模型;提出基于BPSO算法的舰船电力系统储-荷重构优化策略。最后,为验证所提策略的有效性与可行性,对所构建的舰船电力系统模型进行了仿真测试。经过对比分析模型在不同场景下的重构优化结果,表明采用所提的优化策略能够保障系统在受损较为严重的情况下满足频率-功率安全,实现系统最优恢复供电。因此,依据所提策略对储-荷灵活重构,可有效保障冲击负荷接入下的舰船电力系统安稳运行。

Aiming at the frequency safety problem caused by the need for direct connection to the power grid due to high-power shock load caused by damage to ships,a storage load reconstruction optimization strategy for ship distribution systems based on flexible energy storage support and considering the impact of shock load is proposed.Firstly,in order to evaluate the impact of input shock load on system frequency safety and the support effect of energy storage configuration on the system,modeling and analysis are conducted based on the actual working characteristics of both,and a frequency response model suitable for ship power systems is established.On the basis of this model,system frequency safety operation constraints are constructed under different damage conditions of the system,and are simplified into a practical configuration combination problem suitable for solving.Secondly,to meet the operational requirements of ship power systems,a multi constraint reconstruction optimization model is established with the maximum recovery load weight value as the optimization objective,and an optimization strategy of storage-load reconfiguration of ship power system based on BPSO algorithm is proposed.Finally,to verify the effectiveness and feasibility of the proposed strategy,simulation tests are conducted on the ship power system model constructed in this paper.The reconstruction optimization results of the model in different scenarios are compared and analyzed to show that the optimization strategy proposed in the paper can ensure the frequency power safety of the system in severe damage situations,and achieve the optimal restoration of power supply.Therefore,flexible reconstruction of storage load based on the proposed strategy can effectively ensure the safe and stable operation of ship power systems under shock load connection.