Prospects of Using Automatic Calculation of the Pickup Values of Relay Protection in Reconfigurable Ring Distribution Networks

The use of ring circuits in 6 – 35 kV distributed electrical networks can improve the reliability of power supply. An increase in the load power and the share of distributed generation and renewable energy sources causes the redistribution of the power flow during the operation of an electrical network. This is accompanied by an increase in the amount of calculation of normal and emergency operating modes. These problems are especially acute for relay protection and automation, which requires much labor and highly qualified personnel for engineering calculations. Data exchange in distribution electrical network allows establishing the condition and operating modes of its elements and implementing automatic calculation of pickup values of relay protection. Such an automatic calculation system makes it possible to exclude the operator from routine calculation. The efficiency of the automatic calculation of the pickup values of relay protection for a ring distribution network is analyzed. © Springer Science+Business Media, LLC, part of Springer Nature 2024.