In view of the problem of power quality degradation of port distribution network after the large-scale application of shore power load,a method of power quality management of port distribution network is proposed.Base...In view of the problem of power quality degradation of port distribution network after the large-scale application of shore power load,a method of power quality management of port distribution network is proposed.Based on the objective function of the best power quality management effect and the smallest investment cost of the management device,the optimization model of power quality management in the distribution network after the large-scale application of large-capacity shore power is constructed.Based on the balance between the economic demand of distribution network resources optimization and power quality management capability,the power quality of distribution network is considered comprehensively.The proposed optimization algorithm for power quality management based on Matlab and OpenDSS is proposed and analyzed for port distribution networks.The simulation results show that the proposed optimizationmethod can maximize the power qualitymanagement capability of the port distribution network,and the proposed optimization algorithm has good convergence and global optimization finding capability.展开更多
为解决港口岸电系统中负荷功率存在较强冲击性问题,提出一种基于储能电池的负荷功率柔性控制方法,在实现功率实时平抑和无功动态补偿的基础上,降低系统网侧线损、提升储能电池循环寿命及应对极端工况的能力。首先,介绍负荷功率柔性控制...为解决港口岸电系统中负荷功率存在较强冲击性问题,提出一种基于储能电池的负荷功率柔性控制方法,在实现功率实时平抑和无功动态补偿的基础上,降低系统网侧线损、提升储能电池循环寿命及应对极端工况的能力。首先,介绍负荷功率柔性控制系统(load power flexible control system,LPFCS)的拓扑结构及控制方式;其次,依据负荷功率和电池荷电状态来划分负荷工况,进而以负荷功率波动的平抑、防止电池过充过放以及提升储能系统应对极端工况的能力为原则,将LPFCS的工作模式分为空闲、填谷、削峰以及限幅4种模式;然后,建立系统网侧线损优化模型,求解模型得出功率补偿值的取值区间,并基于该区间确定不同工况下LPFCS的功率补偿值。最后,基于长江某岸电系统实测负荷数据,对LPFCS的工作性能进行仿真和实验验证。结果表明:LPFCS的补偿响应时间小于0.3 s,负荷功率波动抑制率达到90%,系统网侧线损率下降17.2%。展开更多
文摘In view of the problem of power quality degradation of port distribution network after the large-scale application of shore power load,a method of power quality management of port distribution network is proposed.Based on the objective function of the best power quality management effect and the smallest investment cost of the management device,the optimization model of power quality management in the distribution network after the large-scale application of large-capacity shore power is constructed.Based on the balance between the economic demand of distribution network resources optimization and power quality management capability,the power quality of distribution network is considered comprehensively.The proposed optimization algorithm for power quality management based on Matlab and OpenDSS is proposed and analyzed for port distribution networks.The simulation results show that the proposed optimizationmethod can maximize the power qualitymanagement capability of the port distribution network,and the proposed optimization algorithm has good convergence and global optimization finding capability.
文摘为解决港口岸电系统中负荷功率存在较强冲击性问题,提出一种基于储能电池的负荷功率柔性控制方法,在实现功率实时平抑和无功动态补偿的基础上,降低系统网侧线损、提升储能电池循环寿命及应对极端工况的能力。首先,介绍负荷功率柔性控制系统(load power flexible control system,LPFCS)的拓扑结构及控制方式;其次,依据负荷功率和电池荷电状态来划分负荷工况,进而以负荷功率波动的平抑、防止电池过充过放以及提升储能系统应对极端工况的能力为原则,将LPFCS的工作模式分为空闲、填谷、削峰以及限幅4种模式;然后,建立系统网侧线损优化模型,求解模型得出功率补偿值的取值区间,并基于该区间确定不同工况下LPFCS的功率补偿值。最后,基于长江某岸电系统实测负荷数据,对LPFCS的工作性能进行仿真和实验验证。结果表明:LPFCS的补偿响应时间小于0.3 s,负荷功率波动抑制率达到90%,系统网侧线损率下降17.2%。
