Distributed photovoltaic distribution network voltage control device

摘要

Storage medium with computer-executable instructions which, when executed by a computer processor, implement a control method with the following steps: Controlling a local control device to locally control a reactive supply voltage at a photovoltaic solar inverter when the supply voltage rises to a warning value and does not exceed an upper limit value; Determine whether the reactive power in the present area is exhausted after the reactive supply voltage at the photovoltaic inverter has been locally controlled with the local control device and when the supply voltage continues to rise to the upper limit value; Requesting a regional, coordinated control of the reactive supply voltage at an area controller in an area where the local control device is located if the reactive power in the present area is exhausted; Coordinated control of the reactive supply voltage on the photovoltaic inverter via the range controller; Requesting regulation of a tap of a transformer for load voltage regulation on a power plant control device and controlling the transformer for load voltage regulation after all reactive power capacities along the line have been exhausted and if the supply voltage continues to rise to the upper limit value; active cutting control of the photovoltaic solar inverter until the supply voltage does not exceed the upper limit value, when the tap of the transformer reaches the operating limit and the supply voltage does not exceed the upper limit value.