浙江电力2025，Vol.44Issue(9)：70-80,11.DOI:10.19585/j.zjdl.202509007
基于飞轮电机的配电变压器有载分接开关优化方案
An optimized scheme for OLTCs of distribution transformers using flywheel motors
摘要
Abstract
In the switching process of on-load tap changers(OLTCs)for distribution transformers,electric arcs are likely to occur at the contacts,which have an adverse impact on the service life and normal operation of the equip-ment.Therefore,based on an analysis of the merits and demerits of existing OLTCs and the principle of arc genera-tion,this paper presents a design concept of creating a"zero voltage"condition prior to the closure of the switching device.A controlled-source device is then designed,integrating a flywheel motor equipped with a flywheel rotor.Le-veraging its rapid response characteristics,the output of the controlled source is modulated in accordance with the voltage changes across the OLTC,thereby reducing the voltage across the switching device to zero.This enables the OLTC to close under the"zero voltage"condition,effectively weakening the electric arcs generated during the switching process.A simulation model of the on-load tap-changing device incorporating the controlled source is es-tablished in PSCAD software.The simulation results verify the effectiveness of the proposed scheme in controlling the voltage across the switching device and suppressing the generation of electric arcs during the switching process.关键词
有载分接开关/受控源/飞轮电机/切换技术/PSCADKey words
OLTC/controlled source/flywheel motor/switching technique/PSCAD引用本文复制引用
李江,郭苏瑢,刘博..基于飞轮电机的配电变压器有载分接开关优化方案[J].浙江电力,2025,44(9):70-80,11.基金项目
国家自然科学基金(51977030) （51977030）
