With the large-scale integration of global renewable energy generation

broadband oscillation risks in power systems at home and abroad have become increasingly prominent

posing significant threats to the stable and safe operation of the power systems. Impedance-based stability analysis has emerged as an effective methodology for analyzing and mitigating oscillation issues. Accurate acquisition of broadband impedance characteristics serves as the fundamental prerequisite for oscillation analysis

where specialized impedance measurement equipment plays a pivotal role. This paper first conducts a comprehensive review of the historical development of impedance measurement equipment worldwide. Subsequently

measurement principles

topological configurations

practical applications

and performance metrics are systematically analyzed. Finally

the paper provides a comprehensive summary

along with recommendations for technological advances

engineering application

and standard formulation of impedance measurement equipment in the future.