Operative monitoring of distribution networks by fault condition data

Operative monitoring of distribution networks is based on the expert system technique and uses indirect data from the fault condition. This paper highlights a typical microprocessor device installed in a main station which records the number of operations of the main line circuit breaker, the duration of a short circuit current existence and the number of fault current surges. Operative monitoring provides analysis of the network status in the post-fault conditions and detection of disconnected loads; diagnosis of the circuit breaker and isolator status; operative trouble-shooting of the breakers and relays; and display of the obtained information in the dispatching centre