Automation and Power Supply of Mine Electric Locomotive Haulage
Abstract
At the present time, electric locomotive haulage is the most difficult to automate in the chain of all processes of mining technology, so in mine transportation one is still limited to only production signaling and communication. Sometimes, only the switching of turnouts and opening of doors when an electric locomotive passes are automated. The main obstacles to the automation of electric locomotive haulage are unsatisfactory characteristics of the rolling stock, the condition of haulage tracks, and the power supply system. Poor track superstructure and uneven profile of tracks in mine workings, where people pass simultaneously with the movement of electric locomotives, complicate locomotive control operations. Due to the harsh operating conditions, electric locomotives are equipped with series motors. The smoothness of the traction characteristics of the motors exacerbates the instability of the electric locomotive operating modes. The suspension of contact wires is often unsatisfactory, and large voltage fluctuations are observed in the supply lines.
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