不停电作业的低压电源车并机并网系统设计

Design of Parallel and Grid-connected System for Low-voltage Power Supply Vehicles with Uninterrupted Operation

针对当前低压电源车无法完成不停电并机并网作业问题,分析了不停电作业的低压电源车并机并网工作要求和功能需求;详细介绍了低压电源车并机并网系统硬件构成,设计了并机并网控制系统。经过运行测试,结果表明低压电源车在并网过程电压、电流、频率偏差在允许范围内;其切换过程不影响负荷正常运行,实现了不停机作业的功能。

Aiming at the problem that the low-voltage power supply vehicle cannot complete the grid-connected operation without interruption of power,the requirements and functional requirements of the grid-connected operation of the low-voltage power supply vehicle that is connected to the grid are analyzed. The hardware composition of the lowvoltage power supply vehicle parallel-connected grid-connected system is introduced in detail. The parallel-connected grid-connected control system is designed. After running tests,the results show that the voltage,current,and frequency deviations of the low-voltage power supply vehicle are within the allowable range during grid connection. The switching process does not affect the normal operation of the load,and the non-stop operation function is realized.