无载调压变压器分接头选择方法的改进

Improvement of ULTC’ Selection Method

本文对于无载变压器调压分接头的选择提出了一种改进方法——将求算术平均数转化为不等式组的求解方法。这种方法的优点在于:分接头的确定不需要试探和校验,更重要的是不存在漏解的可能。并对用算术平均数和几何平均数得出的分接头相同的结论给出了解释。

An improved method is proposed for the selection of No-load Tap Changer(NLTC).The essence of the proposed method is to solve inequalities instead of seeking arithmetic mean.The merits of this method is as follows:No trial and verification are needed after the NLTC is determined.More importantly,the possibility of loss of solutions is avoided.And the reason why arithmetic mean and geometric mean give the same NLTC is given.