In wide area measurement system

the to-be-measured and to-be-managed data are both transmitted through the electric power dispatching data network. The delay produced at each stage in the process of data transmission is uncertain and random

which brings about a very unfavorable impact on damping control of the wide area power system. Therefore

a measuring method of piecewise delay in the wide area measurement system is proposed

which is capable of efficiently measuring the delay of each link in the data transmission process of the wide area measurement system

providing a basis of analysis in ensuring real-time and accurate data in the wide area measurement system. In Zhejiang Province

a field application platform is set up for three substations to measure the piecewise delay and analyze the characteristics and influencing factors of piecewise delay. The results show that the measurement method of piecewise delay in the wide area measurement system is expected to provide improvement in WAMS overall time delay with definite orientation.