Research on Arrester Interference Compensation Based on Finite Element Method

摘要

In order to effectively compensate for the difference effect caused by the interference between phases of Metal Oxide Arresters (MOA) and reduce the misjudgment events in the actual resistive current measurement, the arrester interference compensation was studied in this paper. Firstly, a three-dimensional model of MOA was established by finite element method in this paper. Next, the potential distribution under the model was compared and analyzed, and the correctness of the model was verified. Then, based on the model, the distribution calculation of coupling capacitance was carried out, and the main capacitance of each phase and the coupling capacitance between phases were calculated. Finally, the simulation calculation models of the coupling current of the resistance valve plates in the adjacent and relative measurement phase were built respectively, and the action forms of the coupling capacitance currents of each layer were compared and analyzed, which provided the basis for eliminating the interference between phases.