低压直流配电系统中的电压损失研究

Research on Voltage Loss in Low Voltage DC Distribution System

由于低压直流配电系统具有供电距离短、线路电压损失大的特点,在工程设计中常常遇到负荷大小发生变化的情况,很难确定回路最大供电距离和选择合适的电缆截面。因此,分析了不同的供电方式和电缆截面对线路电压损失的影响,建立了回路仿真模型,通过仿真数据验证了上述分析的正确性,并从中总结出一种简单有效的极限负荷矩法,大大降低了设计过程的繁琐性。

Due to the short supply distance and large voltage loss of the low-voltage DC power distribution system, it is often encountered in engineering design that when the size of the load changes,lead to determine the maximum power supply distance of the loop and select the appropriate cable section in difficult. This paper analyzes the effects of different power supply methods and cable sections on line voltage loss,establishes a loop simulation model.The correctness of the above analysis is verified by simulation data and a simple and effective limit load moment method,greatly reducing the complexity of the design process.