PHOTOVOLTAIC INVERTER-BASED POWER QUALITY OPTIMIZATION METHOD FOR DISTRIBUTION TRANSFORMER AREA

摘要

A photovoltaic inverter-based power quality optimization method for distribution transformer area, belonging to a control technology of a photovoltaic power station, relating to the field of power quality control, and in particular to a method for optimizing power quality by fully utilizing the capacity of the photovoltaic power station. A TTU acquires an output threshold and a reactive compensation power factor set by a transformer in the transformer area, acquires an output parameter of the current transformer by means of alternating current collection, acquires available capacity and an output parameter of the current photovoltaic power station by means of communication with the photovoltaic power station, acquires the current state of the transformer area by means of parameter comparison, and calculates the output level of the photovoltaic power station according to the state to perform adjustment. By adopting the present invention, the countercurrent condition of the transformer area can be prevented as much as possible; the capacity of a photovoltaic power generation device in the transformer area is fully utilized to provide active power and reactive power compensation; the device is simple, and particularly, when the device is applied to application environments of industrial and commercial users, schools, hospitals and the like which can be independently powered by one transformer area and have medium-sized scales or above, users can be prevented from being fined by an electric power company.