Intelligent electrical power network device
View Patent ↗An intelligent electrical power network control and/or protection device comprises at least one power supply connection for connecting the device to a main power source and an auxiliary power source and at least one unit configured to monitor main power, the unit being configured to activate a signal indicating lack of main power in response to lack of main power. The device further comprises at least one unit configured to provide a state control operation for changing an operating state of at least one unit of the device or an operating state of at least one unit to be connected to the device from an operative mode t a power saving mode in response to the activated signal indicating the detected lack of main power.
1. An intelligent electrical power network control and/or protection device comprising
at least one power supply connection for connecting the device to a main power source and an auxiliary power source,
at least one unit configured to monitor main power, the unit being configured to provide a signal indicating lack of main power in response to a detection of the lack of main power, and
at least one unit configured to provide a state control operation for changing an operating state of at least one unit of the device and/or an operating state of at least one unit to be connected to the device from an operative mode to a power saving mode in response to the signal indicating the detected lack of main power.
2. The intelligent electrical power network control and/or protection device as claimed in claim 1 , wherein
the device comprises at least one unit configured to monitor a power level of the auxiliary power source, the unit being configured to provide an auxiliary power monitoring signal indicating the power level of the auxiliary power source.
3. The intelligent electrical power network control and/or protection device as claimed in claim 2 , wherein
the device is configured to provide the state control operation for changing the operating state of at least one unit of the device and/or the operating state of at least one unit to be connected to the device from the operative mode to the power saving mode in response to a decrease in the power level of the auxiliary power source below at least one limit value.
4. The intelligent electrical power network control and/or protection device as claimed in claim 2 , wherein
the device is configured to provide the state control operation for changing the operating state of at least one unit of the device and/or the operating state of at least one unit to be connected to the device from the operative mode to the power saving mode after a delay in response to the signal indicating the detected lack of main power.
5. The intelligent electrical power network control and/or protection device as claimed in claim 2 , wherein
the device is configured to provide the state control operation for changing the operating state of at least one unit of the device and/or the operating state of at least unit to be connected to the device from the operative mode to the power saving mode in response to an external control command received by the device.
6. The intelligent electrical power network control and/or protection device as claimed in claim 2 , wherein
the unit whose operating state is to be changed is at least one of a communication device and a communication functional block configured to control the operation of the communication device.
7. The intelligent electrical power network control and/or protection device as claimed in claim 2 , wherein
the device is configured to provide the state control operation for changing the operating state of at least one unit of the device and/or the operating state of at least one unit to be connected to the device and being in the power saving mode back to the operative mode in response to a signal indicating restoration of main power.
8. The intelligent electrical power network control and/or protection device as claimed in claim 1 , wherein
the device is configured to provide the state control operation for changing the operating state of at least one unit of the device and/or the operating state of at least one unit to be connected to the device from the operative mode to the power saving mode after a delay in response to the signal indicating the detected lack of main power.
9. The intelligent electrical power network control and/or protection device as claimed in claim 1 , wherein
the device is configured to provide the state control operation for changing the operating state of at least one unit of the device and/or the operating state of at least unit to be connected to the device from the operative mode to the power saving mode in response to an external control command received by the device.
10. The intelligent electrical power network control and/or protection device as claimed in claim 1 , wherein
the unit whose operating state is to be changed is at least one of a communication device and a communication functional block configured to control the operation of the communication device.
11. The intelligent electrical power network control and/or protection device as claimed in claim 1 , wherein
the device is configured to provide the state control operation for changing the operating state of at least one unit of the device and/or the operating state of at least one unit to be connected to the device and being in the power saving mode back to the operative mode in response to a signal indicating restoration of main power.
12. The intelligent electrical power network control and/or protection device as claimed in claim 1 , wherein
the device is configured to provide state control operations for changing the operating state of at least one unit of the device and/or the operating state of at least one unit to be connected to the device between the power saving mode and the operative mode according to an operating state variation routine in response to the signal indicating the detected lack of main power.
13. The intelligent electrical power network control and/or protection device as claimed in claim 12 , wherein the operating state variation routine comprises
two or more successive time periods after which the operating state of at least one unit of the device and/or the operating state of at least one unit to be connected to the device and being in the power saving mode is changed back to the operative mode or the operating state of at least one unit of the device and/or the operating state of at least one unit to be connected to the device and being in the operative mode is changed back to the power saving mode in response to the signal indicating the detected lack of main power.
14. The intelligent electrical power network control and/or protection device as claimed in claim 1 , wherein
the device is configured to provide a state control operation for changing the operating state of at least one unit of the device and/or the operating state of at least one unit to be connected to the device and being in the power saving mode back to the operative mode in response to an external control command received by the device.
15. A method for monitoring power supply in connection with an intelligent electrical power network control and/or protection device, the method comprising
monitoring power supply of a main power source,
providing a signal indicating lack of main power in response to a detected lack of main power,
providing a state control operation for changing an operating state of at least one unit of the device or an operating state of at least one unit to be connected to the device from an operative mode to a power saving mode in response to the signal indicating the detected lack of main power,
monitoring a power level of an auxiliary power source,
providing an auxiliary power monitoring signal indicating the power level of the auxiliary power source, and
providing the state control operation for changing the operating state of at least one unit of the device and/or the operating state of at least one unit to be connected to the device from the operative mode to the power saving mode in response to a decrease in the power level of the auxiliary power source below a limit value.
16. The method according to claim 15 , wherein
the state control operation for changing the operating state of at least one unit of the device and/or the operating state of at least one unit to be connected to the device from the operative mode to the power saving mode is provided after a delay in response to the signal indicating the detected lack of main power.
17. The method according to claim 15 , wherein
the state control operation for changing the operating state of at least one unit of the device and/or the operating state of at least unit to be connected to the device from the operative mode to the power saving mode is provided in response to an external control command received by the device.
18. A computer program comprising program code means configured to execute the method disclosed in claim 15 when run on an intelligent electrical power network control and/or protection device.
19. A computer program comprising program code means configured to execute the method disclosed in claim 15 when run on an intelligent electrical power network control and/or protection device.