FIELD: electrical power engineering. SUBSTANCE: deep change of voltage of high-voltage power line in function of its load is carried out with the aid of line transformers. Determined optimum value of this voltage conforming to minimum of losses is kept in line by control over excitation of line transformers. At maximum level of voltage of high-voltage line transformers are switched over to supply shunting reactors. Control over their power in function of line load is conducted by change of excitation of line transformers. EFFECT: increased reliability of control. 1 dwg
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