外加串联调压变式主变压器整体阻抗特性分析  

The Analysis of the Whole Impedance Characteristic of the

作　　者：陈三运[1] 

机构地区：[1]宜昌供电局,湖北宜昌443000

出　　处：《华中电力》2000年第6期31-32,40,共3页Central China Electric Power

摘　　要：外加串联变调压是主变压器无载调压改有载调压的重要模式，正确认识其整体阻抗特性十分重要。通过基本定义和有关名牌值进行了计算和分析，认为在正负极限档，外加串联调压变的阻抗值相对额定档的偏差很小，所以可不必在意这种变压器整体阻抗的偏差值。同时，在负极性调节范围，这种变压器的整体阻抗相对额定档的偏差值仍为正偏差，这与一体式有载调压变压器是不同的。How to retrofit a off-load-tap-changing transformer into a on-load-tap-changing one﹖The main operating transformer connected by a adscititious tandem on-load-tap-changing one is the important mode．About this question readers can get a correct and detailed answer from this paper．Using the transformer′s impedance charaeteristic the following conclusions are gained by calculating and analyzing the relevant data．that is 1．The whole impedance deviation at the positive or negative limit terminal is rather smaller than at the rated terminal and it is neglectable． 2．In negative areathe whole impedance deviation is always positivewhich is different from incorporated on－load－tap－changing transformer．

关 键 词：阻抗特性 极限阻抗 有载调压变压器 

分 类 号：TM423.012[电气工程—电器]