MODIFICATION OF LOGIC BUS PROTECT ION ALGORITHM OF DISTRIBUTION DEVICES 6(10) KV PREVENTING FALSE RESPONSE AT SUPPLY CIRCUIT FAILURE

The disadvantage of logic bus protection algorithm of distribution devices 6(10) kV, which can lead to false response of protection at supply circuit failure, is shown in this article. The solution of this problem is suggested by inclusion of a signal of voltage in power-supply circuits of ties in algorithm of logic bus protection.