特高压变压器调压补偿方法对比分析

目前特高压变压器采用中性点变磁通的调压模式,虽然采用中性点调压方式会造成低压侧电压的变化,但通过补偿绕组及电压负反馈回路的选择,可以很好地满足调压要求。为比较目前2种常用调压补偿方式变压器的运行特点,首先对特高压变压器常用的2种调压补偿原理进行了介绍,分别给出了2种采用不同补偿方法变压器各个绕组的电磁关系,并对2种调压补偿方式变压器电压调节的差别进行了分析比较。结果表明,采用完全补偿方式时,低压侧电压波动比采用非完全补偿方式时要小,调压效果较好。

Comparative Analysis of UHV Transformer Regulation Compensation Method

Currently UHV transformers use neutral point magnetic flux mode to adjust the voltage. Although the use of neutral point adjustment leads to low-side voltage change, it can satisfy voltage adjustment requirements by careful selection of compensation windings and voltage negative feedback loop. Two common UHV transformer voltage regulator and compensation methods are introduced in order to compare their operation characteristics. The winding electromagnetic relationship of two compensation methods is given and compared in detail. The results show that fully compensation method has smaller low-side voltage fluctuations and yields better regulation performance than incomplete compensation method.