Monitoring and control device for an electrical system

Abstract

Abstract The control device has protective devices (1a,1d) associated with the supply input and output lines. Each has a treatment unit (2) controlling (4) an associated circuit breaker and a communication microprocessor (5). The microprocessor is connected to the corresponding treatment unit and a communication system. The microprocessor associated with an output line can also control (7,4) the associated circuit breaker. If a treatment unit associated with an output line fails, the input line unit can calculate the vectorial sum of the currents transmitted by the output line protection devices (1d). The difference between this sum and the input line current is calculated. If it exceeds the protection characteristic of the failed treatment unit, the microprocessor sends a control signal to the corresponding circuit breaker.

Inventors

• 👤 Claude Souchere

Bibliographic Details