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Аннотация

The paper discusses the impact of ice-and-wind loads on the operation of the 110 kV high-voltage lines. At the same time, measures to control are given. Particular attention is paid to melting icing with electric current in short-circuit mode in three-phase high-voltage power grids. The 110 kV transmission lines of JSC “Taldykorgan joint-stock transport and power grid company (TATEK)” are
considered. The types of accidents depending on climatic conditions are shown, as well as a fragment of power grid schemes and the location of the ice melting plant at the substation. In addition, a mathematical model that takes into account the changes in the conditions of flow around the ice-coveredbody during the icing process and the formula for determining the weight of the ice deposits on the wires is presented, as well as the methods for melting ice with the short-circuit way on the transmission lines. In the future,automation of the melting process is proposed. Reduction of the risk of icing allows carry out effectively power supply to the
territory of Kazakhstan.