Device for limiting single phase ground fault of mining machines

Abstract

Abstract. The paper shows the reasons and consequences of the single-phase ground fault. With all the variety of devices for limiting the current single-phase ground fault, it was found that the most effective are Peterson coils having different switching circuits. Measuring of the capacity of the network is of great importance in this case, a number of options capacitance measurement are presented. A closer look is taken at the device for limiting the current of single-phase short circuit, developed in the Far Eastern Federal University under the direction of Dr. G.E. Kuvshinov. The calculation of single-phase short-circuit currents in the electrical network, without compensation and with compensation of capacitive current is carried out. Simulation of a single-phase circuit in a network with the proposed device is conducted.

Energy conservation challenges and potential in Russia’s North-East region

“…Particular features and challenges of the power grid in the Sakha Republic (Yakutia) include: lack of capacity of 35-220 kV electrical networks; mismatch between equipment rupturing capacity and the calculated shortcircuit currents; non-compliance of relay protection and emergency automatics to the requirements of the existing regulations; non-compliance of the actual operating conditions of the equipment to the requirements of the existing regulations; problems in the energy supply to the consumers of the decentralized zone [14][15][16].…”