洛阳干式变压器：洛阳干式变压器零序阻抗

洛阳干式变压器零序阻抗 　　
在进行系统设计计算时，特别是涉及到不平衡负载和系统接地故障状态问题时，通常采用对称分量原理。系统把正序、负序和零序阻抗归为系统的分量。
对三相洛阳干式变压器来说，正序和负序阻抗值与上述值等同，但零序阻抗则根据洛阳干式变压器结构和有或没有三角形联结绕组二存在很大的变化。
在没有三角形联结第三绕组的情况下，星形联结绕组的零序阻抗很高。零序阻抗的实际值取决于绕组是否有一个三次谐波磁通的低磁阻磁通回路。
对三柱铁心结构来说，如果没有三角形联结，磁通的回路则是气隙，一般油箱和铁心夹件决定着磁通的返回特性，在油箱和铁心夹件周围，磁通会产生一个循环电流。这样的绕组结构所产生的零序阻抗将是一次和二次绕组间正序阻杭的75%一200%。对五柱铁心和单相洛阳干式变压器和三相组来说，零序阻抗将是铁心形状的磁化阻抗。
五柱铁心洛阳干式变压器的零序阻抗实际上等于各相应星形和三角形绕组间的正序阻抗。

Zero sequence impedance

During system design calculations, especially with regard to the unbalanced load and system ground fault condition issues, usually symmetrical component theory. The system to positive, negative and zero sequence impedance of the power system components classified as.
Three-phase transformer,传 真：0635-8888109 the positive and negative sequence impedance value and the value is equal, but zero sequence impedance transformer in accordance with the structure and with or with地 址：山东聊城经济开发区华山路南首30号out delta-connected winding two there is a big change.
In the absence of delta-connected winding the third case, star-connected winding zero sequence impedance is high. Zero sequence impedance of the actual value depends on whether there is a third harmonic winding flux low reluctance flux loop.
Core structure of the three columns, if no delta connection, air-gap flux loop is generally tank and core clamps determines the return flux characteristics of the fuel tank and the core clamps around the loop will produce a flux current. Such a winding structure of the zero-sequence impedance generated by the primary and secondary windings will be a positive-sequence impedance between Hang 75% to 200%. The core of the five columns and three-phase and single-phase transformer group, the zero sequence impedance will be the shape of the core magnetization impedance.
Five pillar core transformer zero sequence impedance is substantially equal to the respective star and delta windings positive sequence impedance.

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