Electric ship power grid monitoring and protection device and battery life monitoring method

Abstract

The invention discloses a monitoring and protection device for an electric ship power grid, which includes a multi-channel switching power supply, a DC transmitter, a signal processing unit, a PPU device, a reinforcement integrated machine, an alarm unit, and a control unit; Voltage and current; the signal processing unit transmits the voltage signal, current signal, and power parameters of the DC grid to the all-in-one machine; the PPU device collects the effective values ​​of the three-phase voltage and current of the AC grid in real time, and transmits the data to the all-in-one machine; The reinforced all-in-one machine processes and displays the above data, sends an alarm signal to the alarm unit, and the control unit controls the continuous power conversion of the power supply and the operation of the current limiting protection device to realize branch power loss and current overload protection. The invention also provides a method for monitoring battery life. The use of the device and method can ensure the safe and stable operation of the whole ship's power grid.

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.

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