Condition 3 measures the voltage between points 1U&2u and between points 1W and 2w, with the voltage between 1W and 2w expected to be higher.

2022年2月28日 · The document provides test conditions for various transformer vector groups including YNyn0, YNyn6, Dd0, Dd6, YNd1, YNd11, Dyn11, and Dyn1. For each vector group, 3 measurement conditions are listed that involve measuring voltages between different transformer terminals when voltage is applied to the HV side.

2023年8月6日 · Following are the various Vector groups of a three-phase transformer and the conditions to be satisfied to confirm the vector group. 1. YNyn0 Vector Group. Apply 3Φ Voltage on the HV side (Voltage may be applied in either of the winding preferably in the HV side as it is safe). 2. YNyn6 Vector Group. 3. Dd0 Vector Group. 4. Dd6 Vector Group. 5.

In video we have shown the procedure to determine vector group of a transformer. Only Ynyn0, Ynyn6, Dyn1 and Dyn11 transformers have been shown as example. The other vector grouos are also...

So let us start with Ynyn vector group. Ynyn: If a transformer has both the winding star connected then there is two possible vector group. Ynyn0 or Ynyn6. Say we have transformer of rating 11/0.433 kV. So its H.V side per phase voltage shall be 11/1.732= 6.35 kV, and its L. V side per phase voltage shall be 0.433/1.732= 0.25 kV (no load voltage)

Simulation results relevant to realistic configurations of medium-voltage (MV) and low-voltage (LV) distribution systems provide useful information to evaluate both the expected level of power quality problems on LV networks due to lightning and the benefits achievable by a proper installation of protection devices.

针对现有配电网单相接地故障消弧方法的不足，本书研究了基于Ynyn6电力变压器型的零序电压调控方法和故障相电压调节算法，创新性地提出了基于Ynyn6电力变压器型电压源补偿原理以及配电网接地故障处置方案。

The document provides test conditions for various transformer vector groups including YNyn0, YNyn6, Ii0, and Ii6. It lists three conditions to compare voltages that should be measured between terminals to confirm the phase shift between primary and secondary windings.

关于 配电网中性点YNyn6变压器型电压源接地方式及原理的作者刘红文、曾祥君、赵现平在西南交通大学出版社

关于 配电网中性点YNyn6变压器型电压源接地方式及原理的作者刘红文、曾祥君、赵现平在西南交通大学出版社