电力电子技术在有载调压变压器中的应用

Application of Electrical and Electronic Techniques in on-load Tap-changing Transformer

传统的有载调压方法采用机械型有载分接开关,由于在分接头切换过程中产生电弧,分接开关动作慢,调整性能差,所以它已经不能完全满足现代电网的安全和经济运行要求。针对这些缺陷,提出了一种无触点无级有载调压技术,它是变压器与电力电子技术的有机结合,能够大大地提高有载调压装置的性能。该技术不仅可用于调压,还可用于有源滤波、无功补偿及电力稳压器,具有广阔的应用前景。

Mechanical on-load tap-changers are used in traditional on-load voltage regulation. Because the tap reacts slowly, generates arcs and is hard to adjust, it no longer satisfies safety and economy requirements of modern power grids. A new non-contact on-load voltage regulation technique, which is able to improve regulator performances, is proposed. This technique can be widely used in voltage regulator, as well as active power filter, reactive power compensator and voltage stabilizer.