China is actively building a new type of power system

but the current complex power network is prone to problems of unbalanced power flow distribution

which are exacerbated by volatility of new energy sources. The power grid urgently needs effective power flow regulation technology. Phase shifting transformers have the advantages of strong power flow regulation capability

low investment

and high reliability

and have been widely used internationally. However

traditional phase shifting transformers can only achieve discrete adjustment

with low adjustment accuracy and limited amplitude regulation capability. Therefore

this article proposes a triple regulation phase shifting transformer

which has strong amplitude regulation capability with high accuracy. Based on its topology structure

this article analyzes its input-output characteristics

investigates the properties and distribution of compensation voltage

and establishes boundary equations from the constraint effects of single amplitude modulation and dual phase modulation. The power flow regulation range is quantitatively analyzed to obtain the maximum expression and calculation method of the power flow regulation range under different conditions. Finally

virtual simulation and physical experiments prove that this structure can effectively increase the number of regulation points

improve regulation accuracy

enable amplitude modulation

and optimize the regulation range.