Energy storage system

Abstract

This system provides an energy storage system that does not cause failure of the earth leakage circuit breaker due to its self-sustaining output. [Solution] The energy storage system 10A includes an independent output terminal 13 that supplies the necessary power to a load device 24 via a ground fault circuit interrupter 30 when an abnormality occurs in the commercial power grid 20, and a control unit 11 that determines whether or not to continue supplying the necessary power based on the load-side voltage, which is the voltage at the terminal of the ground fault circuit interrupter 13 on the load device 24 side. For example, if the load-side voltage is below a predetermined first threshold, the control unit 11 decides not to continue supplying the necessary power.

Claims

1. A self-contained output terminal that supplies the necessary power to the load device via a ground fault circuit interrupter when an abnormality occurs in the commercial power grid, A control unit that determines whether or not to continue supplying the necessary power based on the load-side voltage, which is the voltage at the terminal on the load device side of the earth leakage circuit breaker. A power storage system characterized by being equipped with

2. The control unit decides not to continue supplying the required power if the load voltage is below a predetermined first threshold. The energy storage system according to claim 1.

3. The control unit decides not to continue supplying the necessary power if the difference between the voltage of the standalone output terminal and the load-side voltage is greater than or equal to a predetermined second threshold. The energy storage system according to claim 1.

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