TY JOUR TI DISCONNECTIONS IN 0.4 KV ELECTRIC NETWORKS: QUANTITY, REASONS AND COUNTER MEASURES KW reliability of power supply KW power outages KW electric network KW power line KW power lines KW transformer substation KW the effectiveness of countermeasures to reduce outages JO Vestnik of Kazan State Agrarian University AU Vinogradov, A.V. AU Bol'shev, V.E. AU Vinogradova, A.V. PY 2020 IS 15 PB Kazan state agrarian University