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根据舰船综合电力系统采用直流区域配电的新特点,以电动机安全启动为目标,提出基于逆变器负载率的直流区域配电系统(DC zonal electrical distribution system,DC-ZEDS)负荷一次转供最大供电能力(total supply capability,TSC)模型,通过引入虚拟联络矩阵和综合负荷转移矩阵的概念推导负荷二次转供矩阵的表达式,并给出逆变器最大负载率的解析表达式。然后,根据DC-ZEDS的结构特殊性,建立基于逆变器过载约束的负荷二次转供TSC模型。最后,分别计算逆变器安全运行和区域内直接联络逆变器过载两种状态DC-ZEDS的负荷一次转供TSC及逆变器的最大负载率向量,分析负荷一次转供后逆变器过载的可能,进一步通过解析法和模型法求得负荷二次转供TSC,并根据逆变器负载率之间允许差额的不同给出几组不同的逆变器最大负载率向量,解决DC-ZEDS因电动机启动可能造成的切负荷问题,并给出该情况下DC-ZEDS的安全运行边界,为舰船综合电力系统安全预防控制提供研究基础。
According to the new characteristic of the integrated power system of the ship using DC distribution, aiming at the safe starting of the motor, the DC zonal distribution system (DC-ZEDS) The total supply capability (TSC) model derives the expression of load quadratic transfer matrix by introducing the concept of virtual contact matrix and integrated load transfer matrix, and gives the analytic expression of the maximum load factor of the inverter. Then, based on the structural specificity of DC-ZEDS, a secondary load transfer TSC model based on inverter overload constraints is established. Finally, calculate the maximum load vector of DC-ZEDS for the safe operation of the inverter and the overload of the direct contact inverter in the region, and then analyze the maximum load factor of the inverter and TSC The possibility of further analysis by the analytical method and the model obtained load secondary transfer TSC, and according to the allowable difference between the inverter load rate given different group of different maximum load vector inverter to address the DC-ZEDS The possible load shedding problem caused by motor starting and the safe operation boundary of DC-ZEDS in this case are provided, which provides the research basis for the safety precaution and control of integrated power system of warship.