Electric ship power grid monitoring protection device and endurance monitoring method

Abstract

The invention discloses an electric ship power grid monitoring protection device comprising multiple switching power supplies, a direct-current transmitter, a signal processing unit, a PPU device, a reinforced all-in-one machine, an alarm unit, and a control unit. The direct-current transmitter acquires the voltage and current of a direct-current power grid in real time. The signal processing unit transmits voltage signals, current signals and power parameters of the direct-current power grid to the reinforced all-in-one machine. The PPU device acquires the effective values of the three-phase voltage and current of an alternating-current power grid in real time, and transmits the data to the reinforced all-in-one machine. The reinforced all-in-one machine processes and displays the data, and sends an alarm signal to the alarm unit. The control unit controls the work of power supply uninterrupted conversion and current limiting protection devices so as to realize power off of branch circuits and current overload protection. The invention further provides a power grid endurance monitoring method. By adopting the device and the method, safe and stable operation of the whole ship power grid can be ensured.

Description

technical field [0001] The invention belongs to the field of comprehensive monitoring of power grids, and in particular relates to a monitoring and protection device for power grids of electric ships and a battery life monitoring method. Background technique [0002] With the continuous expansion of the scale of the electric ship power grid, the workload of power grid status monitoring and operation and maintenance is increasing day by day. There is a great need urgent. [0003] Most of the existing electric ship grid power supply, power distribution, and power consumption equipment can only be monitored and controlled within each area. For example, one monitoring system for DC and one monitoring system for AC, which cannot be interconnected with the superior or other external systems, reducing the The utilization efficiency of electric energy increases the difficulty of system management; moreover, the existing power supply, power distribution, and power consumption equipm...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing electric ship grid power supply, power distribution, and power consumption equipment can only be monitored and controlled within each area. For example, one monitoring system for DC and one monitoring system for AC, which cannot be interconnected with the superior or other external systems, reducing the The utilization efficiency of electric energy increases the difficulty of system management; moreover, the existing power supply, power distribution, and power consumption equipment are relatively simple, with relatively single functions, and there are many loopholes in monitoring and control, which pose a threat to the safety of the entire ship's power grid.

Images