基于变压器Γ形等效电路的参数辨识方法

Parameter Identification of Transformer Γ-equivalent Circuit

根据变压器的Γ型等效电路,提出一种由变压器消耗的无功进行等效电抗识别的思路,采用积分方式降低了对变压器高低压侧数据同步性的要求,并推导出算法有解的条件。最后采用仿真模型验证算法的有效性,并模拟了数据不同步对辨识精度的影响。对于对实时性要求较低,而精度要求较高的变压器状态监测场合,具有良好的应用前景。

On the basis of the transformer F-equivalent circuit, a novel method for the equivalent reactance identification based on the reactive power that transformer consumes is presented in this paper. With the method of integral, the proposed algorithm reduces the requirement of data synchronization for both sides of the transformer. Moreover, the conditions of the equation solution is also derived in this paper. Finally, the simulations are performed to verify the validity of the proposed algorithm, Moreover, the influence of data asynchronization on the identification accuracy is also simulated. The proposed algorithm has good prospects for application, especially in the transformer condition monitoring which has low request of real time performance but high request of data accuracy.