Power overload protection system

Abstract

An overload protection system is disclosed, suitable for installation between a substation and a power generation unit. It includes a first intelligent protection device suitable for installation at the substation, a second intelligent protection device suitable for installation at the power generation unit, a circuit breaker electrically connected to the power generation unit and the second intelligent protection device, a first network switch connected to the first intelligent protection device, a second network switch connected to the first network switch, and a terminal processing unit connected to the second network switch and electrically connected to the circuit breaker. When the second intelligent protection device determines that the current value exceeds the safe load, or when the terminal processing unit analyzes that the current value exceeds the safe load, it controls the circuit breaker to open the circuit, or controls the power generation unit to reduce its load.

Claims

1. A power overload protection system, suitable for configuration between a substation and a power generation device, the power generation device generating power to produce a feedback power, and including an output module electrically connected to the substation and used to transmit the feedback power to the substation, the power overload protection system comprising: a first intelligent protection device, suitable for being installed at the substation to detect a first current value of the substation, and for providing a load reduction command when the substation achieves a preset logic; a second intelligent protection device, suitable for being installed at the power generation device to detect a second current value of the power generation device, and for causing the power generation device to reduce its load when the load reduction command is received; a circuit breaker, suitable for being electrically connected to the output module of the power generation device and informationally connected to the second intelligent protection device, and for disconnecting the circuit from the output module when the second intelligent protection device determines that the first current value exceeds a safe load value; and a first network switch, electrically connected to the first intelligent protection device; A second network switch is connected to the first network switch and is used to cooperate with the first network switch to enable information transmission between the substation and the power generation equipment; and a terminal computing device is connected to the second network switch and electrically connected to the circuit breaker, and is used to control the circuit breaker to disconnect from the output module when the first current value is analyzed to exceed the safe load value, or to reduce the load of the power generation equipment when the load reduction command is received.

2. The power overload protection system as described in claim 1, wherein the power generation equipment further includes a power storage module for storing electrical energy, wherein, The power overload protection system further includes an energy storage management module that is informationally connected to the energy storage module, and a power regulation module that is informationally connected to the energy storage management module and electrically connected to the energy storage module. The energy storage management module is used to control the power regulation module to stop charging or discharging with the energy storage module when the first current value exceeds the safe load value.

3. The power overload protection system as described in claim 2, wherein, The terminal computing device only controls the circuit breaker to disconnect from the output module or receives the load reduction command to reduce the load of the power generation equipment after the energy storage management module fails to control the power regulation module.

4. The power overload protection system as described in claim 2, wherein, After the energy storage management module fails to control the power regulation module, the second intelligent protection device analyzes the data through the terminal computing device and then controls the circuit breaker to disconnect from the output module, or receives the load reduction command to reduce the load of the power generation equipment.

5. The power overload protection system as described in any one of claims 1 to 4, further comprising a timer connected to the second network switch, wherein, The timer is used to generate time information suitable for supplying to the substation and the power generation equipment.

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