阻抗匹配平衡变压器运行特性研究的数学模型及实验验证

The Mathematical Model and Test Verification of the Study on the Operating Characteristic of Impedance Matching Balance Transformer

本文首次将多绕组变压器理论、变压器的磁势平衡方程以及电网络理论中的基尔霍夫定理相结合,推导了阻抗匹配平衡变压器运行特性研究的数学模型,并进行了实验验证。此数学模型对进一步研究在不问的负荷情况下,该变压器的漏阻抗对一次侧零序、负序电流、二次侧二输出臂电压的相用差、一、二次侧电压损失的影响、以及对进一步研究电源进线的换相问题,双边供电等问题都有重要意义。

Applying multi-coil transformer theory, magnetic potential balance equations of transformer, and Kirchhoff's laws of network theory together,this paper has first deduced the mathematical model or the study on the operating characteristic of impedancematching balance transformer. and the model is verified by test results. The model isimportant in the further study on the influence of transformer's leakage impedance tothe zero and negtive sequence current of the primary side, the phase angle differencebetween the two secondary sides' oulput voltage and voltage drop between the primaryand secondary side nuder variant load conditions. It is also important in the further study on such problems as phase sequence exchange among power input transmission lines,bidirectional power supply, and so on.