高压电器2025，Vol.61Issue(6)：24-31,8.DOI:10.13296/j.1001-1609.hva.2025.06.003
基于超高速断路器的无感柔性电源切换技术研究
Research on Non Inductive Flexible Power Switching Technology Based on Ultra High Speed Circuit Breakers
摘要
Abstract
The synchronous switching scheme of dual power supply typically uses the voltage-current instantaneous DFT(Discrete Fourier Transform)algorithm to calculate the angle,frequency and amplitude.This algorithm needs a data window that exceeds half a power frequency cycle,which,in turn,increases the judgment and execution time of the control software.Consequently,the switching process between dual power sources switching process usually takes about 20 ms to 60 ms,potentially leading to voltage sag issues.To mitigate this,a novel undisturbed parallel flexible switching method is proposed.This method is based on the ultra-high-speed circuit breaker and can promptly switch to a backup power source in the event of voltage loss or internal short-circuit faults within the power grid.After clarifying the correlation between the millisecond response time of ultra-high-speed circuit breaker and system stabil-ity,the parallel flexible switching technology is deeply explored.A method that achieves transition balance of dual power supply parameter modules through the parallel connection of reactors equipped with ultra-high-speed switches is designed,thus reducing the algorithm's requirements and,in case of fault of power supply,ensuring undisturbed switching of the healthy area voltage.The efficiency of this method has been proved through verification on a high-voltage experimental platform.This study offers a new technological solution for enhancing reliability and stability of power systems.关键词
超高速断路器/并联柔性切换技术/电压暂降/无感切换/健全区域/高压试验Key words
ultra high speed circuit breaker/parallel flexibility switching technology/voltage sag/undisturbed switching/sound areas/high voltage test引用本文复制引用
余银钢,潘天红,芮骏,李岭..基于超高速断路器的无感柔性电源切换技术研究[J].高压电器,2025,61(6):24-31,8.基金项目
国家自然科学基金项目(52377164) （52377164）
安徽省科技创新攻坚计划项目(202423i08050033).Project Supported by National Natural Science Foundation of China(52377164),Anhui Province Science and Technology Innovation Tackle Plan Project Funding(202423i08050033). （202423i08050033）
