Location Method of Amplitude-Phase Controlled Phase Shifting Transformer Considering New Energy Consumption

In order to solve the problems of high permeability access of Distributed Generations (DG), such as difficulty in eliminating new energy, over-voltage and overload of lines, Phase Shifting Transformer (PST) has been gradually applied as an economical and reliable power flow control device. Affected by the characteristics of PST, it is necessary to choose the optimum installation position in the distribution network. Therefore, a method of amplitude-phase controlled PST location considering new energy dissipation and loop-closing operation is proposed in this paper. Firstly, this paper derives the mathematical model of amplitude-phase controlled PST, which adds the function of amplitude modulation on the basis of phase modulation function of PST, which increases the system's reactive power control capability. Then, a multi-objective optimization model for PST location is established considering the factors such as new energy absorption, power quality, network loss and loop closure safety. Finally, an example demonstrates the effectiveness of the proposed method. The application of amplitude-phase controlled PST relaxes constraints. Under the optimal installation position, PST greatly promotes the absorption of new energy. At the same time, it also improves the voltage level, reduces the network loss and ensures the safety of the loop closing process.