Charging reactive power compensation system and method for long-distance power transmission line of hydropower station

The invention discloses a charging reactive power compensation system and method for a long-distance power transmission line of a hydropower station, and mainly aims to solve the problems that an existing charging reactive power compensation scheme for the long-distance power transmission line of the hydropower station is high in cost, high in equipment body loss and low in compensation precision. Comprising a low-voltage SVG (static var generator), a medium-voltage compensation reactor, a corresponding fling-cut switch, a controller, a power calculation and communication unit and a GPRS (general packet radio service) channel. And the controller switches the medium-voltage compensation reactor installed at the hydropower station side according to the active power and the reactive power of the power transmission line system side and a control strategy, and accurately controls the output of the low-voltage SVG at the same time, so that the power factor of the long-distance power transmission ...