Investigation and Modeling of Communication Delays in Wide Area Measurement System

Wide Area Measurement System has increasingly become an important part of wide-area interconnected power system, the reliable transmission of real-time measurement data is essential. This paper creates WAMS delay model from perspectives of the stratification of system functionality and communication structure. It also analyses influences to WAMS communication delay caused by different protection ways in the cases of communication link failures. The conclusions of numeral examples give some reference suggestions about the setting of PDC waiting time. The model and calculation method presented in this paper provides practicability and favorable support for WAMS design.