考虑等效阻抗影响的对称双芯移相变压器仿真建模研究OA北大核心

With the continuous improvement of new energy permeability,loop switching in distribution network is be-coming a hot topic of study,and phase shifting transformer(PST)is widely concerned as an important means of power flow regulation.In the existing modeling and calculation methods to PST,the effect of the equivalent impedance on the phase shift effect is often ignored,which,in some cases,leads to the deviation between the analysis results and the actual situation and affects safe and stable operation of system.On this basis,in this paper a dual-core symmetri-cal phase-shifting transformer model considering the influence of equivalent impedance is set up by way of consider-ing the diversity of functions and the variability of structure of phase-shifting transformer together with the voltage drop generated by equivalent impedance.The corresponding power flow calculation model is derived,which makes the theoretical analysis results more accurate.Finally,a simulation system model is set up in PSDEdit.The results show that whether the equivalent impedance is considered in the mathematical model of PST has a great influence on the calculation results of the active power transmitted by the line in the steady-state environment and the impact de-gree of the system in the transient process.Consideration of the effect of the equivalent impedance is more conducive to improve the accuracy of the analysis results.