Controlled closing technology is widely used in scenarios such as reactive power compensation capacitor banks

ultra-high voltage lines

and filters.This paper reviews the global and domestic research developments in controlled closing technology for circuit breakers

highlighting its current applications.It conducts an in-depth analysis of how factors such as rate of decrease of dielectric strength(RDDS)

temperature

and intermittent periods affect the accuracy of controlled closing operations.The study summarizes key technologies and challenges in controlled closing and analyzes the causes of variability in the operating time of circuit breaker closing

offering recommendations for further research in controlled closing technology for circuit breakers.