Protection of an electric power transmission network

Details Protection of an electric power transmission network Protection of an electric power transmission network

2006-01-10

2006-01-10

Picard, Leo (Department: 2125)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Electrical power generation or distribution system

C700S293000, C700S294000, C361S065000, C361S066000

Reexamination Certificate

active

06985800

ABSTRACT:
For the control of an electric power transmission network, where local protection functions are implemented by a plurality of local protection devices (3,3a,3b,3b′,3c) located at a plurality of locations throughout the network, the following steps are executedmeasuring phasor data for voltages and currents at a plurality of locations (A,B) of the network,transmitting said phasor data to a central processing device (2),emulating, in the central processing device (2), protection functions that are implemented in the local protection devices (3,3a,3b,3b′,3c), andexecuting, in accordance with a given redundancy strategy, control commands that are issued redundantly by the local protection devices (3,3a,3b,3b′,3c) and by the central processing device (2).In a preferred variant of the invention, values of predetermined parameters that are used in the protection function, in particular protection threshold values, are adapted to measured values.

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