US 11,056,877 B2 · Method and system for feeder protection in electrical power network

Abstract

A system and method for feeder protection in an electrical power network nodal point including at least three feeders. In the system and the method it is executed in an intelligent electronic device reserved for the feeder, on the basis of the at least one measured electrical quantity actual in the respective feeder, at least one first protection function monitoring a power system related condition of the respective feeder, as well as in a central intelligent electronic device, for at least one feeder, at least one second protection function monitoring the same power system related condition of the feeder. Furthermore the central intelligent electronic device is configured to further execute for the at least one feeder, on the basis of the at least one measured electrical quantity actual in the other feeders connected to the same nodal point, at least one third protection function monitoring the same power system related condition of the feeder.

Claims20

Dependent claims

A system for feeder protection in an electrical power network nodal point comprising at least three feeders, the system comprising

at least one measurement instrument for each feeder for measuring at least one electrical quantity in its respective feeder,
at least one intelligent electronic device for each feeder for executing, on the basis of the at least one measured electrical quantity in its respective feeder, at least one first protection function that monitors a power system related condition of its respective feeder, and
at least one central intelligent electronic device configured to execute for at least one feeder, on the basis of the at least one measured electrical quantity in the at least one feeder, at least one second protection function that monitors the same power system related condition as the first protection function, wherein
the central intelligent electronic device is configured to further execute for the at least one feeder, on the basis of the at least one measured electrical quantity in the other feeders connected to the same nodal point, at least one third protection function that monitors the same power system related condition as the first and second protection function.

1 more element

A method for feeder protection in an electrical power network nodal point comprising at least three feeders, the method comprising

measuring in each respective feeder at least one electrical quantity,
executing for each respective feeder, on the basis of the at least one measured electrical quantity in the respective feeder, at least one first protection function that monitors a power system related condition of the respective feeder,
executing for at least one feeder, on the basis of the at least one measured electrical quantity in the at least one feeder, at least one second protection function that monitors the same power system related condition, and
executing for the at least one feeder, on the basis of the at least measured electrical quantity in the other feeders connected to the same nodal point, at least one third protection function that monitors the same power system related condition.

1 more element

Dependencies are inferred from the claim text.

Method and system for feeder protection in electrical power network

Life of this patent

Method and system for feeder protection in electrical power network

Life of this patent

Abstract

Claims20