The invention relates to a centralized low voltage ride through correction system, which is characterized in that: an energy absorbing resistor, a controllable power electronic device and a high-speed switch are connected in parallel between a current collection bus and a transformer; the parallel circuit is connected in parallel with a bypass switch between the transformer and the current collection bus; a static var generator SVG is arranged on the current collection bus; when the system operates normally, the bypass switch is turned off and the high-speed switch is closed; when the system fails, the high-speed switch is turned off; failure current flows by the energy absorbing resistor; the size of equivalent impedance is adjusted by controlling the conduction angle of the controllable power electronic device; and meanwhile, the static var generator SVG automatically enters a constant voltage working mode to stabilize bus voltage. The centralized low voltage ride through correction system has the beneficial effects that: the system is arranged between the current collection bus of a wind power station or a photovoltaic power station and a low voltage side of a main transformer in a centralized way; the problem of low voltage ride through can be effectively solved; and the low voltage ride through reconstruction cost of the wind power station or the photovoltaic power station can be greatly reduced.