RESEARCH OF TRANSIENT PROCESSES IN HIGH-VOLTAGE TRANSMISSION LINES 6–10 KV AND DEVELOPMENT OF MICROELECTRONIC SPECIAL PROCESSOR OF RELAY PROTECTION, INVARIANT TO CHANGE IN AMPLITUDES OF PHASE CURRENTS

The fast-acting algorithms of exposure and invariant authentication of transients in the lines of electricity transmission as load surge, short circuits and start of powerful electric engines were developed; based on that, the functions of relay defense device of high-voltage lines of electricity transmission were determined. The given structure of small, microelectronic fast-acting device of relay defense is with the extended functional possibilities of recognition of load surge and defense of high-voltage lines of electricity transmission from short circuits, the syntax of his functions was presented. This device can be used for load surge recognition and short circuits, invariant to the size of increase currents in the separate phases of electric lines. It allowed successful application of the developed method and device for simultaneous recognition of load surge, short circuits and starting of powerful electric engines. The information technology of designing structural solutions of relay protection special processor for high-voltage electricity transmission lines was presented.