Reducing Accident Risk in 6–35 kV Distribution Networks Based on Online Monitoring of Partial Discharges and Temperature

Abstract

The paper presents the results of experimental studies on the improvement of operational safety in 6–35 kV distribution networks, based on the implementation of a partial-discharge online monitoring and temperature monitoring systems. The studies were conducted in an operating industrial enterprise of a continuous process cycle, specific to the mining and processing industries. As shown, using standard sensors helps detect pre-failure conditions in cable lines and contact connections without shutting down the workflow. Quantitative diagnostic criteria have been determined; exceeding them significantly increases the risk of accidents. The implementation of the proposed approach ensures the reduction of calculated risk by more than fivefold, which is a matter of great importance for metallurgical, chemical, and oil and gas enterprises. The obtained results confirm the significance of the transition from scheduled maintenance to the preventive safety management model.