Protection method and device of an electrical network for aircraft

摘要

A method for protecting a bipolar power distribution network supplied with power by an electric power source isolated from an electrical ground of an aircraft. The network includes a resistive protection device configured to be connected to the electrical ground and to the two phases of the network. The method includes the steps of receiving at least one voltage value on at least one of the two phases and/or at least one current value in the electrical ground, comparing the at least one voltage value with a first predetermined threshold value and/or the at least one current value with a second predetermined threshold value and controlling the protection device by changing its resistivity according to the comparison.

主权项

1. A method for protecting an electrical network for aircraft, wherein said network is a bipolar power distribution network, which is supplied with electrical power by an electric power source of said aircraft, said electric power source is isolated from an electrical ground of said aircraft, said bipolar power distribution network comprises two phases and a resistive protection device configured to be connected to said electrical ground of said aircraft and to the two phases of said bipolar power distribution network, wherein said method comprises the steps of:
receiving at least one voltage value on at least one of said two phases of said bipolar power distribution network and at least one current value in said electrical ground of said aircraft; comparing at least one of
said at least one voltage value with a first predetermined threshold value andsaid at least one current value with a second predetermined threshold value; controlling said protection device by changing its resistivity according to said comparison.