TY JOUR TI INCREASING THE EFFICIENCY OF POWER SUPPLY OF DRILLING RIGS KW drilling rigs KW power supply KW reactive power KW higher harmonics KW automatically regula tors JO Scientific Papers Collection of the Angarsk State Technical University AU Arsent'ev, O.V. AU Baranov, V.B. AU Tihonova, A.E. AU Samchuk, R.M. PY 2020 IS 2020 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»