| 摘要 |
FIELD: electrical engineering.SUBSTANCE: invention can be used in electrical engineering. According to method overhead line is connected at ends in distribution devices of substations, on of connected main earthing phase conductors derived repair overhead line with grounding circuit support, set additional grounding spaced from grounding circuit support at distance of not less than 15 m, in circuit of main earthing include current transformer, between main ground and additional grounding include current source, controlled current with current transformer secondary winding so that at each moment in time instantaneous value of controlled source of current is equal to instantaneous value of current through main grounding to support circuit and opposite to it by direction.EFFECT: technical result is higher safety of works on overhead lines due to reduction of induced voltage in place of works to safe value.1 cl, 2 dwg |
