Three-phase unbalanced compensation and its application in transformer region based on Wang's theorem

Abstract

The passive component compensation for three-phase unbalance treatment at this stage is difficult to adapt to the load fluctuations and rapid changes in actual distribution network. Therefore, aiming at the goal of active power balance, firstly, the paper derives the formula of susceptance compensation among phases based on the Wang's theorem. Next, correct the basic formula and verify it by simulation, considering engineering factors such as actual line impedance, power supply asymmetry and so on. Finally, summarize a relatively complete configuration method of three-phase unbalance compensation in transformer region. The results show that the method can effectively improve the adaptability of the passive component compensation.